A temperature-controlled handheld ATP fluorescence detector

Abstract

This utility model relates to the field of microbial detection technology, and more specifically, to a temperature-controlled handheld ATP fluorescence detector. It includes a housing, a temperature control component, and a main circuit board and a detection mechanism respectively disposed within the housing. The detection mechanism has a detection chamber for holding a swab. The main circuit board integrates a central processing module and a fluorescence detection module. The temperature control component includes a heating element and a temperature sensor respectively installed in the detection mechanism. The signal output terminal of the temperature sensor is electrically connected to the central processing module, the signal output terminal of the central processing module is electrically connected to the heating element, and the signal output terminal of the fluorescence detection module is electrically connected to the central processing module. The temperature sensor senses the temperature of the reagent. If the detected reagent temperature is lower than the optimal temperature range for the ATP fluorescence reaction, the heating element will activate to heat the reagent to the optimal temperature range. This ensures detection accuracy even in low-temperature environments and provides high environmental adaptability.

Description

Technical Field

[0001] This utility model relates to the field of microbial detection technology, and more specifically, to a temperature-controlled handheld ATP fluorescence detector. Background Technology

[0002] As people's living standards continue to improve, the public is paying more and more attention to food safety and public health issues. Adenosine triphosphate (ATP), as an energy source for cellular life activities, exists in all microbial cells. Under the action of luciferase-luciferin, it can undergo a chemical reaction and release fluorescent signals, and the intensity of the light emission is directly proportional to the number of microorganisms.

[0003] An ATP fluorescence detector is a portable device used for the rapid detection of microbial contamination levels on object surfaces or in liquids. It calculates the bacterial count and ATP content by analyzing the fluorescence intensity of a sample, indirectly reflecting the number of microorganisms and the amount of biological residues. Its core value lies in its speed, simplicity, and real-time on-site feedback capability, making it an important auxiliary tool for verifying the effectiveness of daily cleaning and disinfection and monitoring hygiene conditions in industries such as food, beverage, catering, medical, and pharmaceutical.

[0004] Existing ATP fluorescence detectors are mostly handheld, which are small and easy to carry. These detectors work well with test swabs during detection. However, due to their portability, the application scenarios for handheld detectors are expanding. Studies show that the optimal temperature for the ATP fluorescence reaction under the action of luciferase and luciferin is 24°C to 25°C. In low-temperature environments such as outdoors in winter or in cold storage rooms, enzyme activity is inhibited, leading to a decrease in the number of emission pulses per unit time and a drop in fluorescence intensity, severely affecting the detection accuracy of ATP fluorescence detectors. Current technology lacks a handheld fluorescence detector that can maintain detection accuracy even in low-temperature environments. Utility Model Content

[0005] The purpose of this invention is to overcome the problem that the existing technology lacks a handheld fluorescence detector that can ensure detection accuracy in low-temperature environments, and to provide a temperature-controlled handheld ATP fluorescence detector that can heat the sampling results in low-temperature environments to ensure detection accuracy.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] A temperature-controlled handheld ATP fluorescence detector is provided, comprising a housing, a temperature control component, a main circuit board and a detection mechanism respectively disposed within the housing, the detection mechanism having a detection chamber for placing a swab, the main circuit board integrating a central processing module and a fluorescence detection module, the temperature control component including a heating element and a temperature sensor respectively mounted on the detection mechanism, the signal output terminal of the temperature sensor being electrically connected to the main circuit board, the signal output terminal of the circuit board being electrically connected to the heating element, and the fluorescence detection module being electrically connected to the central processing module.

[0008] This invention relates to a temperature-controlled handheld ATP fluorescence detector. The operator holds the detector, first using the cotton tip of a swab to sample the object to be tested. Then, the sampled cotton tip is mixed with the reagent stored inside the swab. The swab is then inserted into the detector's detection chamber. Upon activation, the fluorescence detection module senses the fluorescence intensity within the reagent and transmits the signal to the central processing module for processing, calculating the ATP content. This handheld fluorescence detector provides on-site feedback and offers greater convenience. The temperature sensor detects the reagent temperature; if the temperature is detected to be below the optimal temperature range for the ATP fluorescence reaction, the heating element activates to heat the reagent until the temperature reaches the optimal range. The heating element then stops heating the reagent, and the fluorescence detection module activates. Even in low-temperature environments, detection accuracy is maintained, making it highly adaptable to various environments.

[0009] Furthermore, the detection mechanism includes a guide tube and a fixed base fixed to the main circuit board. The guide tube and the fixed base are detachably connected. The detection chamber is located inside the fixed base, with one end of the guide tube inside the detection chamber. The heating element and the temperature sensor are both located inside the detection chamber. After sampling, the swab can be inserted into the guide tube, with the end of the swab containing solvent located inside the detection chamber. The heating element and temperature sensor are both located inside the detection chamber, resulting in better heating of the solvent, reduced heat loss, and more accurate temperature sensor readings. The guide tube and the fixed base are designed to be detachable for easy replacement of the guide tube.

[0010] Furthermore, the testing mechanism also includes a fixing plate, a rubber ring, and a dust cover. The rubber ring is located between the fixing plate and the fixing base. The fixing plate and the fixing base are locked together by a locking member. The outer wall of the guide tube is provided with a protrusion. The protrusion passes through the opening of the fixing plate and is fastened to the inner wall of the rubber ring. One end of the guide tube is provided with a snap-fit ​​part. The snap-fit ​​part is snapped into the inner wall of the dust cover. The dust cover is located inside the fixing base. Because the rubber ring can deform, when the guide tube is installed, the protrusion of the guide tube squeezes the rubber ring, causing it to deform. The rubber ring provides a reaction force that squeezes the guide tube, thus fixing it in place. The rubber ring also improves sealing and protects the electronic components inside the housing. Since the swab is frequently inserted and removed, it may bring in some dust or foreign objects. The dust cover prevents dust from entering the housing and contaminating the electronic components on the internal circuit board, extending its service life. The locking part of the guide tube is connected to the dust cover with a snap-fit ​​connection, eliminating the need for ultrasonic welding, reducing welding steps, and lowering production costs.

[0011] Furthermore, the heating element is a heating film that covers the side of the dust cover. A slot is provided on the side wall of the fixing base, and the temperature sensor is fixed within the slot, located below the dust cover. The heating element, being a heating film covering the side of the dust cover, provides more uniform heating of the reagent inside the swab.

[0012] Furthermore, the housing includes a front shell and a rear shell, which are connected by snap-fit. Two light-shielding plates are fixed to the inner wall of the rear shell, forming a guide groove between them. The guide tube is slidably connected to the guide groove. The light-shielding plates serve to block light, preventing external light sources from affecting the detection results. Simultaneously, the guide groove formed by the two light-shielding plates guides the guide tube, facilitating its insertion.

[0013] Furthermore, it also includes a lifting rope, one end of which is fixed with a connector. The connector has a first protrusion and a second protrusion on each side. The inner wall of the front shell has a first slot, and the inner wall of the rear shell has a second slot. When the front and rear shells are closed, the first protrusion engages with the first slot, and the second protrusion engages with the second slot. Through the cooperation of the connector with the front and rear shells, the lifting rope is secured. The lifting rope improves product visibility and aesthetics, and compared to previous devices, it makes it easier for users to grip and prevents the product from slipping.

[0014] Furthermore, the system also includes a control component, which comprises a button, a button circuit board fixed to the inner wall of the rear housing, and a switch fixed to the button circuit board. Two locking blocks are fixed to the inner wall of the rear housing. Each end of the button has a third slot that engages with the locking blocks. The button is mounted between the side walls of the front and rear housings. The switch is located inside the button, and the button circuit board is electrically connected to the main circuit board. By pressing the button, the button touches the switch, controlling its opening or closing, thereby controlling the start and stop of the detector. The button's mounting between the side walls of the front and rear housings facilitates one-handed operation, improving convenience.

[0015] Furthermore, it also includes a cover assembly, which comprises a top cover and a bottom cover. The bottom cover is fixed to the open end of the housing and covers the open end of the housing. The bottom cover has an insertion port for inserting a guide tube. The top cover is rotatably connected to the bottom cover. The bottom cover seals the housing, protecting the internal electronic components. The insertion port facilitates the insertion of the guide tube, allowing a swab to be inserted into the guide tube from outside the housing. The top and bottom covers are rotatably connected. When the detection is activated, the top cover can be closed to reduce light penetration and improve detection accuracy. The top cover can also be closed during normal operation to prevent dust from entering the housing through the insertion port.

[0016] Furthermore, a first magnetic chuck is provided inside the top cover, and a second magnetic chuck is provided at the bottom of the bottom cover. The first magnetic chuck is used to attract the second magnetic chuck. When the top cover is rotated close to the bottom cover, the first and second magnetic chucks attract each other, fixing the top cover in place. When the top cover needs to be opened, the operator only needs to use their fingers to overcome the magnetic force, making it easier to open.

[0017] Furthermore, the system also includes a display screen fixed to the housing, with the signal output terminal of the central processing module electrically connected to the display screen. The central processing module displays the processed data, such as the detected ATP content, visually on the display screen, making the data more intuitive and convenient.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. The temperature sensor detects the temperature of the reagent. If the temperature of the reagent is detected to be lower than the optimal temperature range for the ATP fluorescence reaction, the heating element will be activated to heat the reagent to the optimal temperature range. Even in low-temperature environments, the detection accuracy can be guaranteed, and the reagent has high environmental adaptability.

[0020] 2. The guide tube's locking part is connected to the dust cover with a snap-fit ​​connection, eliminating the need for ultrasonic welding, reducing welding steps and lowering production costs;

[0021] 3. The heating film covers the side of the dust cover, resulting in more uniform heating of the reagents inside the swab;

[0022] 4. The light-shielding plate can block light and prevent external light sources from affecting the test results. At the same time, the two light-shielding plates form a guide groove, which can guide the guide tube and facilitate the installation of the guide tube.

[0023] 5. The lifting rope improves product recognition and aesthetics, and compared to previous equipment, it makes it easier for users to grip and prevents the product from falling off;

[0024] 6. The button is installed between the side wall of the front shell and the side wall of the rear shell, which makes it convenient for users to operate with one hand to control the start and stop, thus improving convenience;

[0025] 7. The top cover and bottom cover are rotatably connected. The top cover is equipped with a first magnetic attraction component, and the bottom cover is equipped with a second magnetic attraction component. The top cover can be rotated to open or close, preventing dust from entering the housing through the insertion port. When you want to open it, the operator only needs to use their fingers to overcome the magnetic attraction force, making it easier to open.

[0026] 8. The display screen can intuitively reflect the data, making it more convenient. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of a temperature-controlled handheld ATP fluorescence detector.

[0028] Figure 2 A schematic diagram of the internal structure of a temperature-controlled handheld ATP fluorescence detector;

[0029] Figure 3 This is a schematic diagram of the exploded structure of the testing facility;

[0030] Figure 4 This is a schematic diagram of the assembly structure of the testing mechanism and temperature control components;

[0031] Figure 5 for Figure 4 A magnified view of a portion of position A;

[0032] Figure 6 This is a schematic diagram of the heating element.

[0033] Figure 7 This is a schematic diagram of the front shell structure;

[0034] Figure 8 This is a schematic diagram of the rear shell structure;

[0035] Figure 9 This is a structural diagram of the front shell, rear shell, control components, circuit board, and bottom cover.

[0036] Figure 10for Figure 9 A magnified view of position B;

[0037] Figure 11 This is a schematic diagram of the lifting rope structure;

[0038] Figure 12 This is a structural diagram of the button component;

[0039] Figure 13 This is a schematic diagram of the cover assembly.

[0040] Figure 14 This is a structural schematic diagram of the cover assembly from another perspective.

[0041] In the attached diagram: 100, housing; 110, front housing; 111, insert post; 112, first slot; 120, rear housing; 121, insertion hole; 122, light shield; 123, second slot; 124, locking block; 130, mounting slot; 200, temperature control component; 210, heating element; 220, temperature sensor; 300, battery; 400, main circuit board; 500, detection mechanism; 510, guide tube; 511, protrusion; 512, engaging part; 520, fixing plate; 530, rubber ring; 540, dustproof 550. Cover; 600. Fixed base; 610. Lifting rope; 611. Connector; 612. First protrusion; 613. Second protrusion; 700. Display screen; 800. Control component; 810. Button component; 811. Third slot; 820. Button circuit board; 830. Switch; 900. Cover assembly; 910. Top cover; 911. First magnetic component; 912. Inner cover; 913. Z-shaped spring; 920. Bottom cover; 921. Insertion port; 922. Second magnetic component; 923. Annular protrusion; 1000. Wipe. Detailed Implementation

[0042] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only, representing schematic diagrams rather than actual physical objects, and should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0043] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0044] Example 1

[0045] This embodiment is a first embodiment of a temperature-controlled handheld ATP fluorescence detector, such as... Figure 1 and Figure 9 As shown, it includes a housing 100, a temperature control component 200, two batteries 300, and a main circuit board 400 and a detection mechanism 500 respectively disposed within the housing 100. Figure 2 As shown, two batteries 300 are attached to the inner wall of the housing 100 using EVA double-sided adhesive. The batteries 300 are electrically connected to a charging port fixed to the outer wall of the housing 100. The batteries 300 are also electrically connected to the main circuit board 400. The main circuit board 400 integrates a central processing module and a fluorescence detection module. The signal output terminal of the fluorescence detection module is electrically connected to the central processing module. Figure 3 and Figure 4 As shown, the detection mechanism 500 includes a guide tube 510, a fixing plate 520, a rubber ring 530, a dust cover 540, and a fixed base 550. The fixed base 550 is locked to the main circuit board 400 by screws, and the gaps are filled with silicone rubber to prevent light leakage. The fixed base 550 has a detection chamber for accommodating swabs 1000. The rubber ring 530 is located between the fixing plate 520 and the fixed base 550. The fixing plate 520 and the fixed base 550 are locked by bolts. The outer wall of the guide tube 510 is provided with an annular protrusion 511. The protrusion 511 passes through the opening of the fixing plate 520 and is clamped to the inner wall of the rubber ring 530. One end of the guide tube 510 is provided with a locking part 512. The locking part 512 is snapped into the inner wall of the dust cover 540. The dust cover 540 is located inside the fixed base 550.

[0046] In this embodiment, such as Figure 5 and Figure 6As shown, the temperature control component 200 includes a heating element 210 and a temperature sensor 220. The heating element 210 is a heating film. The signal output terminal of the temperature sensor 220 is electrically connected to the central processing module. The signal output terminal of the central processing module is electrically connected to the heating element 210. The heating element 210 covers the side of the dust cover 540. The side wall of the fixed base 550 has a slot. The temperature sensor 220 is fixed in the slot and is located below the dust cover 540.

[0047] The working principle of this embodiment is as follows:

[0048] This invention relates to a temperature-controlled handheld ATP fluorescence detector. The operator can hold the detector and first use the cotton tip of a swab 1000 to sample the object to be tested. Then, the sampled cotton tip is mixed with the reagent stored inside the swab 1000. Next, the swab 1000 is inserted into the detection chamber of the guide tube 510. After the detector is activated, the fluorescence detection module senses the fluorescence intensity within the reagent and transmits the signal to the central processing module for processing, calculating the ATP content. This handheld fluorescence detector provides on-site feedback and offers greater convenience. The temperature sensor 220 senses the temperature of the reagent. If the temperature of the reagent is detected to be lower than the optimal temperature range for the ATP fluorescence reaction, the heating element 210 will activate to heat the reagent until the temperature reaches the optimal temperature range for the fluorescence reaction. The heating element 210 then stops heating the reagent, and the fluorescence detection module resumes fluorescence detection.

[0049] The beneficial effects of this utility model are as follows:

[0050] Temperature sensor 220 senses the temperature of the reagent. If the temperature of the reagent is detected to be lower than the optimal temperature range for the ATP fluorescence reaction, heating element 210 will be activated to heat the reagent to the optimal temperature range. Even in low-temperature environments, detection accuracy can be guaranteed, making it highly adaptable to various environments. Since the swab 1000 is frequently inserted and removed, some dust or foreign objects may be introduced. The dust cover 540 prevents dust from entering the interior of the housing 100 and contaminating the electronic components on the internal circuit board, thus extending its service life. The engaging part 512 of the guide tube 510 is snapped together with the dust cover 540, eliminating the need for ultrasonic welding, reducing welding processes and production costs. The heating film covering the side of the dust cover 540 provides more uniform heating of the reagent inside the swab 1000. The rubber ring 530 also improves the sealing performance and protects the electronic components inside the housing 100.

[0051] Example 2

[0052] This embodiment is a second embodiment of a temperature-controlled handheld ATP fluorescence detector. This embodiment is similar to the first embodiment, except that:

[0053] like Figure 1 As shown, it also includes a lifting rope 600, a display screen 700, and a control component 800.

[0054] like Figure 9 As shown, the housing 100 includes a front housing 110 and a rear housing 120. The display screen 700 is a touch screen, fixed to the front housing 110. The signal output terminal of the central processing module is electrically connected to the display screen 700. The front housing 110 and the rear housing 120 are connected by snap-fit ​​fasteners. Figures 7-9 As shown, the inner wall of the front shell 110 is provided with multiple insertion posts 111, and the inner wall of the rear shell 120 is provided with multiple insertion holes 121. The insertion posts 111 pass through the openings on the main circuit board 400 and are installed in the corresponding insertion holes 121. Two light-shielding plates 122 are fixed to the inner wall of the rear shell 120, and a guide groove is formed between the two light-shielding plates 122. The guide tube 510 is slidably connected to the guide groove. An indicator light assembly is provided on the front shell 110. The indicator light assembly is electrically connected to the main circuit board 400 and is used to display the charging status of the device during charging.

[0055] like Figure 11 As shown, a connector 610 is fixed to one end of the lifting rope 600, and a first protrusion 611 and a second protrusion 612 are respectively provided on both sides of the connector 610. Figure 7 and Figure 8 As shown, the inner wall of the front shell 110 is provided with a first slot 112, and the inner wall of the rear shell 120 is provided with a second slot 123. After the front shell 110 and the rear shell 120 are closed, the first protrusion 611 is engaged with the first slot 112, and the second protrusion 612 is engaged with the second slot 123.

[0056] like Figure 9 As shown, the control assembly 800 includes a button 810, a button circuit board 820 fixed to the inner wall of the rear housing 120, and a switch 830 soldered to the button circuit board 820, as shown. Figure 8 As shown, two locking blocks 124 are fixed to the inner wall of the rear shell 120, as follows: Figure 12 As shown, the button component 810 has a third slot 811 at each end, and the third slot 811 is engaged with the clamping block 124. The button component 810 is installed between the side wall of the front shell 110 and the side wall of the rear shell 120. The switch 830 is located inside the button component 810. In this embodiment, the switch 830 is a tactile switch 830. The button circuit board 820 is electrically connected to the main circuit board 400.

[0057] The working principle of this embodiment is as follows:

[0058] The light-shielding plate 122 serves to block light, preventing external light sources from affecting the detection results. Simultaneously, two light-shielding plates 122 form a guide groove, guiding the guide tube 510 and facilitating its installation. The lifting rope 600 is secured by the connector 610 in conjunction with the front shell 110 and rear shell 120. The lifting rope 600 enhances product visibility and aesthetics, and compared to previous devices, it is easier for users to grip, preventing it from slipping. Pressing the button 810 activates the switch 830, controlling its opening and closing, thus controlling the start and stop of the detector. The button 810 is installed between the side walls of the front shell 110 and the rear shell 120, allowing for easy one-handed operation and improved convenience. The central processing module displays the processed data, such as the detected ATP content and reagent temperature, directly on the display screen 700, providing more intuitive data and improved convenience.

[0059] The remaining working principles of this embodiment are the same as those of Embodiment 2.

[0060] Example 3

[0061] This embodiment is a third embodiment of a temperature-controlled handheld ATP fluorescence detector. This embodiment is similar to Embodiment 2, except that, as Figure 1 As shown, it also includes a cover assembly 900, such as Figure 13 As shown, the cover assembly 900 includes a top cover 910 and a bottom cover 920, as... Figure 7 and Figure 8 As shown, both the front shell 110 and the rear shell 120 have mounting grooves 130 at their top ends, such as... Figure 10 As shown, the bottom cover 920 has an annular protrusion 923 on its outer periphery. After the front shell 110 and the rear shell 120 are closed, the annular protrusion 923 is installed in the mounting groove 130 to fix the bottom cover 920. The bottom cover 920 has an insertion port 921 for inserting the guide tube 510. The insertion end of the guide groove is located below the insertion port 921. Two rotating shafts are provided on one side of the top cover 910, and a rotating shaft seat is provided on one side of the bottom cover 920. The rotating shafts are rotatably connected to the rotating shaft seat. Figure 14 As shown, an inner cover 912 is fixed to the inside of the top cover 910. Two first magnetic attractors 911 are provided between the top cover 910 and the inner cover 912. Two second magnetic attractors 922 are provided at the bottom of the bottom cover 920. The first magnetic attractors 911 are used to attract the second magnetic attractors 922. Two Z-shaped springs 913 are also provided. One end of the Z-shaped spring 913 is connected to the bottom cover 920 and the other end is connected to the top cover 910. The Z-shaped spring 913 increases the resistance to opening the cover and provides a better feel.

[0062] The working principle of this embodiment is as follows:

[0063] The bottom cover 920 seals the housing 100, protecting the internal electronic components. The insertion port 921 facilitates the insertion of the guide tube 510, allowing the swab 1000 to be inserted from outside the housing 100 into the guide tube 510. The top cover 910 and the bottom cover 920 are rotatably connected. When the detection is activated, the top cover 910 can be closed to reduce light penetration and improve detection accuracy. The top cover 910 can also be closed normally to prevent dust from entering the housing 100 through the insertion port 921. When the top cover 910 is rotated close to the bottom cover 920, the first magnetic attraction 911 and the second magnetic attraction 922 attract each other, fixing the top cover 910 in place. To open the top cover 910, the operator only needs to use their fingers to overcome the magnetic attraction, resulting in a better opening feel.

[0064] The remaining working principles of this embodiment are the same as those of Embodiment 2.

[0065] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0066] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make various variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A temperature-controlled handheld ATP fluorescence detector, comprising a shell (100) and a main circuit board (400) and a detection mechanism (500) respectively arranged in the shell (100), the detection mechanism (500) is provided with a detection bin for placing a swab (1000), characterized in that, It also includes a temperature control component (200), on which a central processing module and a fluorescence detection module are integrated. The temperature control component (200) includes a heating element (210) and a temperature sensor (220) respectively installed on the detection mechanism (500). The signal output terminal of the temperature sensor (220) is electrically connected to the main circuit board, and the signal output terminal of the circuit board is electrically connected to the heating element (210). The fluorescence detection module is electrically connected to the central processing module.

2. The temperature-controlled handheld ATP fluorescence detector according to claim 1, characterized in that, The detection mechanism (500) includes a guide tube (510) and a fixed base (550) fixed to the main circuit board (400). The guide tube (510) is detachably connected to the fixed base (550). The detection chamber is opened inside the fixed base (550). One end of the guide tube (510) is located inside the detection chamber. The heating element (210) and the temperature sensor (220) are both located inside the detection chamber.

3. The temperature-controlled handheld ATP fluorescence detector according to claim 2, characterized in that, The testing mechanism also includes a fixing plate (520), a rubber ring (530), and a dust cover (540). The rubber ring (530) is located between the fixing plate (520) and the fixing base (550). The fixing plate (520) and the fixing base (550) are locked by a locking member. The outer wall of the guide tube (510) is provided with a protrusion (511). The protrusion (511) passes through the opening of the fixing plate (520) and is fastened to the inner wall of the rubber ring (530). One end of the guide tube (510) is provided with a locking part (512). The locking part (512) is snapped into the inner wall of the dust cover (540). The dust cover (540) is located inside the fixing base (550).

4. The temperature-controlled handheld ATP fluorescence detector according to claim 3, characterized in that, The heating element (210) is a heating film. The heating element (210) covers the side of the dust cover (540). The side wall of the fixed base (550) is provided with a slot. The temperature sensor (220) is fixed in the slot. The temperature sensor (220) is located below the dust cover (540).

5. A temperature-controlled handheld ATP fluorescence detector according to claim 2, characterized in that, The housing (100) includes a front housing (110) and a rear housing (120), which are connected by snap-fit. The inner wall of the rear housing (120) is fixed with two light-shielding plates (122), which form a guide groove between the two light-shielding plates (122). The guide tube (510) is slidably connected to the guide groove.

6. A temperature-controlled handheld ATP fluorescence detector according to claim 5, characterized in that, It also includes a lifting rope (600), one end of which is fixed with a connector (610). The connector (610) has a first protrusion (611) and a second protrusion (612) on both sides respectively. The inner wall of the front shell (110) is provided with a first slot (112), and the inner wall of the rear shell (120) is provided with a second slot (123). When the front shell (110) and the rear shell (120) are closed, the first protrusion (611) is engaged with the first slot (112), and the second protrusion (612) is engaged with the second slot (123).

7. A temperature-controlled handheld ATP fluorescence detector according to claim 5, characterized in that, It also includes a control component (800), which includes a button (810), a button circuit board (820) fixed to the inner wall of the rear shell (120), and a switch (830) fixed to the button circuit board (820). Two clamping blocks (124) are fixed to the inner wall of the rear shell (120). The two ends of the button (810) are respectively provided with a third slot (811). The third slot (811) is engaged with the clamping block (124). The button (810) is installed between the side wall of the front shell (110) and the side wall of the rear shell (120). The switch (830) is located inside the button (810). The button circuit board (820) is electrically connected to the main circuit board (400).

8. A temperature-controlled handheld ATP fluorescence detector according to claim 2, characterized in that, It also includes a cover assembly (900), which includes a top cover (910) and a bottom cover (920). The bottom cover (920) is fixed to the opening end of the housing (100) and covers the opening end of the housing (100). The bottom cover (920) has an insertion port (921) for inserting a guide tube (510). The top cover (910) is rotatably connected to the bottom cover (920).

9. A temperature-controlled handheld ATP fluorescence detector according to claim 8, characterized in that, The top cover (910) is provided with a first magnetic attractor (911) inside, and the bottom cover (920) is provided with a second magnetic attractor (922) at the bottom. The first magnetic attractor (911) is used to attract the second magnetic attractor (922).

10. A temperature-controlled handheld ATP fluorescence detector according to any one of claims 1-9, characterized in that, It also includes a display screen (700) fixed to the housing (100), and the signal output terminal of the central processing module is electrically connected to the display screen (700).

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