A handheld spectrometer

Abstract

This application relates to the field of spectroscopic detection technology, and in particular to a handheld spectrometer, comprising a housing, a detection component, and an adjustment component. The housing has a handle. The detection component includes a detector and a display screen. The detector is disposed within the housing, and a detection hole is formed in the housing. The light emitting end of the detector extends out of the housing through the detection hole to contact the detection surface of the object to be measured for detection. The display screen is electrically connected to the detector to display detection parameters. The adjustment component includes a flexible connector and a first elastic member. The flexible connector is disposed within the detection hole to flexibly connect the detector to the housing. The first elastic member is disposed between the detector and the housing, enabling the detector to pop out of the housing along the detection hole and elastically connecting the outer wall of the detector to the inner wall of the housing. This application improves the accuracy and stability of the spectrometer's detection results.

Description

Technical Field

[0001] This application relates to the field of spectral detection technology, and in particular to a handheld spectrometer. Background Technology

[0002] A spectrometer is a scientific instrument that breaks down complex light into spectral lines. It consists of prisms or diffraction gratings. A spectrometer can measure the light reflected from the surface of an object. While the seven colors of sunlight are distinguishable to the naked eye, if sunlight is broken down by a spectrometer and arranged by wavelength, visible light occupies only a small portion of the spectrum. The rest are indistinguishable to the naked eye, such as infrared, microwaves, ultraviolet rays, and X-rays. By capturing light information with a spectrometer, developing it on photographic film, or displaying and analyzing the data using computerized automatic display instruments, the elements contained in an object can be determined. This technology is widely used in the detection of air pollution, water pollution, food hygiene, and the metal industry.

[0003] In existing technologies, a handheld spectrometer requires the detector's light-emitting end to be parallel and in contact with the detection surface of the object before activating the detection unit to emit detection light. During the detection process, the operator must hold the spectrometer to ensure the light-emitting end remains in close contact with the detection surface. However, the entire testing process can take anywhere from ten to twenty seconds or even one or two minutes, making it difficult for the operator to maintain a stable grip. Hand tremors can cause the light-emitting end to tilt or detach from the detection surface, leading to light leakage and other problems that severely affect the accuracy and stability of the detection results. Furthermore, the rigid contact between the light-emitting end and the object can cause the detector to bump against itself, potentially damaging internal components or lenses. Summary of the Invention

[0004] To improve the accuracy and stability of spectrometer detection results, this application provides a handheld spectrometer.

[0005] The handheld spectrometer provided in this application adopts the following technical solution:

[0006] A handheld spectrometer, comprising:

[0007] A housing, on which a handle is provided;

[0008] A detection assembly includes a detector and a display screen; the detector is disposed inside a housing, the housing has a detection hole, and the light emitting end of the detector extends outside the housing through the detection hole to contact the detection surface of the object to be tested for detection; the display screen is electrically connected to the detector to display detection parameters;

[0009] An adjustment assembly includes a flexible connector and a first elastic element; the flexible connector is disposed within a detection hole to flexibly connect the detector to the housing; the first elastic element is disposed between the detector and the housing, and the first elastic element enables the detector to pop outward along the detection hole and elastically connect the outer wall of the detector to the inner wall of the housing.

[0010] By adopting the above technical solution, during testing, the operator holds the handle and brings the detector's light-emitting end close to the object under test, ensuring contact with it. The first elastic element provides a certain degree of buffering protection during this process, preventing the detector from being damaged by direct hard contact with the object under test. During testing, if the operator's hand shakes, causing the housing to tilt slightly or move away from the object under test, the detector, under the action of the first elastic element, ensures that the detector's light-emitting end remains in close contact with the detection surface of the object under test. The elastic connection between the detector and the housing allows for tilting between the detector and the housing to compensate for the tilting between the housing and the detection surface of the object under test. This design allows the detector to make appropriate adaptive adjustments according to the changes in the housing's posture, ensuring that even if the housing's posture is unstable, the detector can maintain an ideal angular relationship with the object under test, thereby reducing light leakage and ultimately improving the accuracy and reliability of the spectrometer's detection data.

[0011] Optionally, the adjustment assembly further includes an annular plate and at least three adjustment rods; the annular plate is sleeved on the side of the detector away from the light emitting end and parallel to the side of the detector used to abut the object to be measured; the three adjustment rods are distributed parallel to each other along the circumference of the detection hole on the outer periphery of the detector and are slidably connected to the housing, and the sliding direction of the three adjustment rods is parallel to their own length direction; one end of the adjustment rod slides against one side of the annular plate, and the other end extends outside the housing to slide against the detection surface of the object to be measured; when the ends of the three adjustment rods away from the annular plate are all against the object to be measured, the annular plate is parallel to the detection surface of the object to be measured, and the annular plate allows the side of the detector used to abut the object to be measured to be parallel to and against the detection surface of the object to be measured.

[0012] By adopting the above technical solution, the adjustment component can significantly improve the detector's ability to adaptively adjust according to changes in the housing's posture. Specifically, during the detection process, if the housing tilts relative to the detection surface of the object under test, the adjustment rod closer to the tilt direction will experience increased force, pushing the annular plate to deflect in the opposite direction. Since the annular plate is connected to the detector, this action directly drives the detector to synchronously adjust its tilt angle, ensuring that it always maintains good contact with the detection surface of the object under test. Simultaneously, the special layout design of the adjustment rod effectively extends the force arm, meaning that even a slight reverse force exerted on the adjustment rod by the object under test is sufficient to trigger an angle change in the detector, thereby significantly improving the sensitivity and accuracy of the detector's angle correction.

[0013] Optionally, a dust removal assembly is also included, comprising a sleeve, a sealing plate, and a second elastic element. The sleeve is fitted around the outer periphery of the detector and located on the side of the annular plate away from the light-emitting end of the detector. One end of the sealing plate is sealed to the outer wall of the detector, and the other end is sealed to the end of the sleeve away from the annular plate. The inner and outer walls of the annular plate are respectively in sealing sliding contact with the outer wall of the detector and the inner wall of the sleeve to form a sealed air cavity between the annular plate, the sleeve, the sealing plate, and the detector. A connecting channel is provided on the detector, one end of which connects to the air cavity, and the other end extends to the light-emitting end of the detector. The second elastic element is disposed between the sealing plate and the annular plate to cause the annular plate to spring up toward the end of the sleeve away from the sealing plate. When the annular plate springs up, the end of the adjusting rod away from the annular plate protrudes beyond the light-emitting end of the detector. When the annular plate moves to its limit position near the sealing plate, the end of the adjusting rod away from the annular plate is on the same plane as the light-emitting end of the detector.

[0014] By adopting the above technical solution, dust or other impurities on the surface of the object to be tested can be removed before the test begins, ensuring that the detection light is not interfered with, thereby improving the detection accuracy. Specifically, during the test, as the light emitting end of the detector gradually approaches the object to be tested, the adjusting rod first contacts the object and pushes the annular plate towards the sealing plate. This action compresses the gas in the air cavity and causes the gas to be ejected from the light emitting end of the detector through the connecting channel, effectively removing dust and other impurities attached to the surface of the object to be tested. Moreover, when this process occurs, the light emitting end of the detector has not yet come into contact with the object to be tested, allowing dust or impurities to dissipate from the gap between the detector and the object to be tested. In addition, the second elastic element can push the annular plate to reset after the test is completed and expand the air cavity to draw in air for the next test.

[0015] Optionally, the dust removal assembly further includes a flexible tube, a first one-way valve, and a second one-way valve; one end of the flexible tube is connected to the air cavity, and the other end extends to the outside of the housing to connect to the outside; the first one-way valve is disposed on the flexible tube to prevent gas in the air cavity from flowing out of the flexible tube; the second one-way valve is disposed in the connecting channel to prevent external gas from entering the air cavity through the connecting channel.

[0016] By adopting the above technical solution, the situation where dust is sucked up and contaminates the detector lens when air is drawn from the side of the object under test through the connecting channel during the resetting process of the annular plate is effectively avoided. Specifically, when the annular plate moves towards the sealing plate, the gas in the air cavity is compressed and can only be discharged through the connecting channel; while during the resetting process of the annular plate, external air can only be replenished into the air cavity through the flexible tube.

[0017] Optionally, sealing rings are provided between the inner wall of the annular plate and the detector, and between the outer wall of the annular plate and the sleeve.

[0018] By adopting the above technical solution, the sealing ring effectively enhances the sealing between the annular plate and the detector, as well as between the annular plate and the sleeve, preventing gas leakage and ensuring stable internal pressure of the air chamber, thereby improving the reliability of the dust removal component.

[0019] Optionally, the central axis of the adjusting rod is parallel to the central axis of the detection hole; the angle between any two of the lines connecting the projection points of the central axes of the three adjusting rods and the central axis of the detection hole on a plane perpendicular to the central axis of the detection hole is greater than 90° and less than 180°.

[0020] By adopting the above technical solution, it is ensured that the adjustment rod is subjected to uniform force during adjustment, and that the adjustment rod can sense and enable the annular plate to accurately correct the orientation of the detector regardless of which direction the housing is tilted, ensuring that the light emitting end of the detector remains parallel to the detection surface of the object under test, thereby further improving the accuracy and stability of the spectrometer detection results.

[0021] Optionally, both ends of the adjusting rod are provided with universal ball joints.

[0022] By adopting the above technical solution, the universal ball joint can reduce the friction between the adjusting rod and the annular plate and the object under test during sliding contact, ensuring smooth sliding of the adjusting rod while extending the service life of the component. Furthermore, during the adaptation and adjustment process to the surface of the object under test, the design of the universal ball joint helps improve the fit between the end of the adjusting rod and the annular plate, thereby further ensuring the precise alignment and parallelism between the detector's light emitting end and the detection surface of the object under test, and improving detection accuracy.

[0023] Optionally, the detection assembly also includes a control button and a battery; the control button is located on the grip; the control button is electrically connected to the detector to control the detector to emit detection light, and the battery is detachably connected to the grip to power the detector and the display screen.

[0024] By adopting the above technical solution, operators can conveniently control the detector to emit detection light through the control buttons on the handle, improving the ease of operation of the equipment. At the same time, the removable battery design not only facilitates replacement and charging, but also ensures the long-term use capability of the handheld spectrometer in outdoor or power-free environments, enhancing the practicality and flexibility of the equipment.

[0025] Optionally, a distance sensor is also included. The distance sensor is disposed on the side of the housing near the light emitting end of the detector and is used to detect the distance between the detector and the object to be measured. The distance sensor is electrically connected to the detector to control the detector to turn on and off. The detector is turned on only when the distance sensor detects that the detector and the object to be measured have reached a predetermined distance.

[0026] By adopting the above technical solution, the detector can be automatically activated when it approaches the object to be measured. Specifically, the distance sensor is configured so that the detector only activates when it reaches a predetermined distance from the object, avoiding energy waste caused by premature activation and the risk of accidental activation that could irradiate the operator's eyes. This design significantly improves the safety of spectrometer operation, ensures that the detection light is emitted under appropriate conditions, and enhances the accuracy of the detection results.

[0027] Optionally, a rubber sleeve is provided on the outer wall of the grip.

[0028] By adopting the above technical solution, the rubber sleeve on the outer wall of the handle can increase the feel when holding it and improve the anti-slip performance, so that the tester can hold the spectrometer more stably, reduce the shaking of the equipment caused by hand slippage, and further improve the accuracy and stability of the test results.

[0029] In summary, this application includes the following beneficial technical effects:

[0030] During testing, the operator holds the handle and brings the detector's light-emitting end close to the object under test, ensuring contact. The first elastic element provides cushioning protection during this process, preventing direct hard contact between the detector and the object and thus preventing damage. If the operator's hand shakes, causing the housing to tilt slightly or move away from the object, the first elastic element ensures the detector's light-emitting end remains in close contact with the object's detection surface. The elastic connection between the detector and the housing allows for tilting to compensate for any tilting between the housing and the object's detection surface. This design allows the detector to adaptively adjust to changes in the housing's posture, ensuring an ideal angular relationship between the detector and the object even when the housing's posture is unstable. This reduces light leakage and ultimately improves the accuracy and reliability of the spectrometer's detection data.

[0031] The adjustment assembly significantly enhances the detector's ability to adaptively adjust to changes in the housing's posture. Specifically, during detection, if the housing tilts relative to the detection surface of the object being measured, the adjustment rod closer to the tilt direction will experience increased force, pushing the annular plate to deflect in the opposite direction. Since the annular plate is connected to the detector, this action directly causes the detector to synchronously adjust its tilt angle, ensuring it always maintains good contact with the detection surface of the object being measured. Simultaneously, the special layout design of the adjustment rod effectively extends the lever arm, meaning that even a slight reverse force exerted by the object being measured on the adjustment rod is sufficient to trigger an angle change in the detector, thereby significantly improving the sensitivity and accuracy of the detector's angle correction.

[0032] Before testing begins, dust and other impurities on the surface of the object to be tested can be removed, ensuring that the detection light is not interfered with, thereby improving detection accuracy. Specifically, during testing, as the light emitting end of the detector gradually approaches the object to be tested, the adjusting rod first contacts the object and pushes the annular plate towards the sealing plate. This action compresses the gas in the air cavity and causes the gas to be ejected from the light emitting end of the detector through the connecting channel, effectively removing dust and other impurities attached to the surface of the object to be tested. Moreover, during this process, the light emitting end of the detector has not yet come into contact with the object to be tested, allowing dust or impurities to dissipate from the gap between the detector and the object to be tested. In addition, the second elastic element can push the annular plate to reset after testing and expand the air cavity to draw in air for the next test. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0034] Figure 2 This is a schematic diagram of the internal structure of an embodiment of this application.

[0035] Figure 3 The main exhibits are the adjustment components and the dust removal components.

[0036] Figure 4 yes Figure 3 A magnified view of part A in the middle.

[0037] Figure 5 yes Figure 3 A magnified view of part B in the middle section.

[0038] Explanation of reference numerals in the attached drawings: 100, object to be tested; 1, housing; 11, detection hole; 2, handle; 21, rubber sleeve; 3, detection assembly; 31, detector; 311, connecting channel; 32, display screen; 33, control button; 34, battery; 4, adjustment assembly; 41, flexible connector; 42, first elastic element; 43, annular plate; 44, adjusting rod; 5, dust removal assembly; 51, sleeve; 52, sealing plate; 53, second elastic element; 54, flexible tube; 55, first one-way valve; 56, second one-way valve; 6, air cavity; 7, sealing ring; 8, universal ball joint; 9, distance sensor. Detailed Implementation

[0039] The following combination Figures 1-5 This application will be described in further detail.

[0040] This application discloses a handheld spectrometer.

[0041] Reference Figure 1 and Figure 2 In this embodiment, the handheld spectrometer includes a housing 1, a handle 2, a detection component 3, an adjustment component 4, and a dust removal component 5. Specifically, the housing 1 is made of high-strength engineering plastic, possessing lightweight and durable characteristics, and sufficient impact resistance; a circular detection hole 11 penetrating the end face of the housing 1 is provided on one side end face; the handle 2 is fixedly connected to the bottom of the housing 1 for easy gripping by the operator, and a rubber sleeve 21 is provided on the outside of the handle 2, which can increase the feel of the grip and improve the anti-slip performance, thereby allowing the operator to hold the spectrometer more stably. In other embodiments, the housing 1 may also be made of aluminum alloy or carbon fiber.

[0042] Reference Figure 2 and Figure 3 In this embodiment, the detection component 3 includes a detector 31, a display screen 32, a control button 33, and a battery 34. The detector 31 is a cylindrical element mainly composed of a miniature X-ray tube and a silicon drift probe. Its working principle is to use the miniature X-ray tube to emit X-rays to excite the elements in the test object 100, causing them to release characteristic X-ray fluorescence. The wavelength and intensity of these fluorescences are then analyzed by the silicon drift probe to determine the type and content of the elements in the test object 100. The detector 31 is located inside the housing 1. The light emitting end of the detector 31 passes through the detection hole 11 and extends to the outside of the housing 1 to abut against the detection surface of the test object 100 to detect the test object 100.

[0043] The display screen 32 can be selected as an LCD touch screen or an OLED touch screen as needed; the display screen 32 is fixed on the side of the housing 1 away from the detection hole 11, and the display screen 32 is electrically connected to the detector 31 through an FPC flexible cable, so as to display the parameters detected by the detector 31 for the user to view and enable the user to perform quick touch operations.

[0044] The control button 33 is electrically connected to the detector 31 to control the detector 31 to emit detection light or turn it off after it is turned on. The control button 33 is located on the grip 2 in a position that is easy for the user to reach with their fingers when holding the device, so that the user can operate the detector 31 to start and stop with one hand.

[0045] The battery 34 is detachably connected to the grip 2 to power the detector 31 and the display screen 32. Specifically, the battery 34 can be a high-capacity lithium-ion polymer battery, which supports fast charging protocols and is equipped with a power indicator light to remind you to replace and charge it in time to avoid interrupting the workflow.

[0046] Reference Figure 3 and Figure 4 In this embodiment, the adjustment component 4 includes a flexible connector 41, a first elastic element 42, an annular plate 43, and three adjustment rods 44. The flexible connector 41 can be a rubber ring. The flexible connector 41 is disposed in the detection hole 11 and located between the detector 31 and the housing 1. One end of the flexible connector 41 is fixed to the outer wall of the detector 31, and the other end is fixed to the inner wall of the housing 1 to flexibly connect the detector 31 and the housing 1.

[0047] The first elastic element 42 is disposed between the detector 31 and the housing 1 and is located at the end of the detector 31 away from its own light emitting end. The first elastic element 42 can be a coiled spring. One end of the first elastic element 42 is fixedly connected to the outer wall of the detector 31, and the other end is fixed to the inner wall of the housing 1. This arrangement of the first elastic element 42 causes the light emitting end of the detector 31 to pop out of the housing 1 along the detection hole 11 and makes the outer wall of the detector 31 elastically connected to the inner wall of the housing 1. It should be noted that when the detector 31 is not disturbed by other external forces, one side of its light emitting end is parallel to the side of the housing 1 where the detection hole 11 is opened.

[0048] The annular plate 43 is made of high-strength steel and has high strength and wear resistance. The annular plate 43 is sleeved on the side of the detector 31 away from the light emitting end and is parallel to the end face of the detector 31 used to abut against the object 100 being measured.

[0049] The adjusting rod 44 is also made of high-strength steel, which has high strength and wear resistance, and its cross-section is circular. The three adjusting rods 44 are distributed parallel to each other on the outer periphery of the detector 31 with the central axis of the detection hole 11 as the center, and are slidably connected to the housing 1. The sliding direction of the three adjusting rods 44 is parallel to their own length direction and perpendicular to the side of the housing 1 where the detection hole 11 is opened. The central axis of the three adjusting rods 44 is parallel to the central axis of the detection hole 11. The angle between each pair of the lines connecting the projection points of the central axis of the three adjusting rods 44 and the central axis of the detection hole 11 on the side perpendicular to the central axis of the detection hole 11 is 120°, so that the spacing between the three adjusting rods 44 is equal.

[0050] One end of the adjusting rod 44 slides against the end of the annular plate 43 near the detector 31, and the other end extends outside the housing 1 to slide against the detection surface of the object to be tested 100. When the ends of the three adjusting rods 44 away from the annular plate 43 are all against the object to be tested 100, the annular plate 43 is parallel to the detection surface of the object to be tested 100, and the annular plate 43 allows the side of the detector 31 used to abut against the object to be tested 100 to be parallel and against the detection surface of the object to be tested 100. Thus, if the housing 1 and the detection surface of the object to be tested 100 tilt during the detection process, the adjusting rod 44 on the side closer to the tilt direction will push the annular plate 43 to deflect in the opposite direction due to the increased force. However, since the annular plate 43 is connected to the detector 31, this action will directly drive the detector 31 to adjust the tilt angle synchronously, ensuring that it always maintains good contact with the detection surface of the object to be tested 100. Meanwhile, the special layout design of the adjusting rod 44 effectively extends the force arm, which means that even if the object to be measured 100 exerts a slight reverse force on the adjusting rod 44, it is enough to cause an angle change in the detector 31.

[0051] Preferably, both ends of the adjusting rod 44 are provided with universal ball joints 8, which can reduce the frictional force when the adjusting rod 44 slides against the annular plate 43 and the object to be measured 100. In other embodiments, the flexible connector 41 can also be a silicone ring or an air bladder; the first elastic member 42 can also be replaced by multiple ordinary springs connected between the detector 31 and the housing 1; the annular plate 43 and the adjusting rod 44 can also be made of other metal materials, such as aluminum alloy or titanium alloy; the cross-section of the adjusting rod 44 can also be rectangular or regular polygonal; the number of adjusting rods 44 can also be four, five or more, and the spacing between the adjusting rods 44 can also be unequal.

[0052] Reference Figure 3 and Figure 5In this embodiment, the dust removal assembly 5 includes a sleeve 51, a sealing plate 52, a second elastic element 53, a flexible tube 54, a first one-way valve 55, and a second one-way valve 56. Specifically, the sleeve 51 is a circular annular cylinder made of the same material as the outer shell of the detector 31. The sleeve 51 is fitted around the outer periphery of the detector 31 and is located on the side of the annular plate 43 away from the light emitting end of the detector 31. The sealing plate 52 is also made of the same material as the outer shell of the detector 31, and its shape is similar to that of the annular plate 43. One end of the sealing plate 52 is sealed and connected to the outer wall of the detector 31, and the other end is sealed and connected to the end of the sleeve 51 away from the annular plate 43. The inner wall and outer wall of the annular plate 43 are respectively sealed and slidingly abut against the outer wall of the detector 31 and the inner wall of the sleeve 51. In this way, a sealed air cavity 6 is formed between the annular plate 43, the sleeve 51, the sealing plate 52, and the detector 31.

[0053] The detector 31 has a connecting channel 311 on its outer shell. One end of the connecting channel 311 is connected to the air cavity 6 through the sealing plate 52, and the opening at the other end extends to the light emitting end of the detector 31. The second elastic element 53 is a spring. The second elastic element 53 is disposed between the sealing plate 52 and the annular plate 43, with one end abutting against the sealing plate 52 and the other end abutting against the annular plate 43, so that the annular plate 43 springs up toward the end of the sleeve 51 away from the sealing plate 52. When the annular plate 43 springs up toward the end of the sleeve 51 away from the sealing plate 52, the end of the adjusting rod 44 away from the annular plate 43 protrudes from the light emitting end of the detector 31. When the annular plate 43 moves to the position closest to the sealing plate 52, the end of the adjusting rod 44 away from the annular plate 43 is on the same plane as the light emitting end of the detector 31. During this testing process, as the light emitting end of the detector 31 gradually approaches the object 100 to be tested, the adjusting rod 44 first contacts the object 100 and pushes the annular plate 43 towards the sealing plate 52. This action compresses the gas in the air cavity 6 and causes the gas to be ejected from the light emitting end of the detector 31 through the connecting channel 311, effectively removing dust and other impurities adhering to the surface of the object 100 to be tested. Moreover, when this process occurs, the light emitting end of the detector 31 has not yet come into contact with the object 100 to be tested, and dust or impurities can be dispersed from the gap between the detector 31 and the object 100 to be tested. After the test is completed, the second elastic element 53 can push the annular plate 43 to reset and cause the air cavity 6 to expand and draw in air for use in the next test.

[0054] The flexible tube 54 can be a rubber hose, with one end connected to the air cavity 6 and the other end extending to the outside of the housing 1 to connect to the outside. A first one-way valve 55 is provided on the flexible tube 54 to prevent gas in the air cavity 6 from flowing out of the flexible tube 54. A second one-way valve 56 is provided in the connecting channel 311 to prevent external gas from entering the air cavity 6 through the connecting channel 311. This effectively avoids the situation where, during the resetting process of the annular plate 43, the air cavity 6 draws air from the side of the object to be tested 100 through the connecting channel 311, causing dust to contaminate the lens of the detector 31. In other embodiments, the sleeve 51 and the sealing plate 52 can be a single integrally formed component. The housing of the detector 31 may not have a connecting channel 311, and the gas in the air cavity 6 can be discharged to the light emitting end of the detector 31 using a pipe. The flexible tube 54 can also be a silicone hose or a PVC hose.

[0055] Preferably, sealing rings 7 are provided between the inner wall of the annular plate 43 and the detector 31, and between the outer wall of the annular plate 43 and the sleeve 51. The sealing rings 7 can be O-rings with a circular or rectangular cross-section. The sealing rings 7 effectively enhance the sealing between the annular plate 43 and the detector 31, and between the annular plate 43 and the sleeve 51, ensuring stable internal pressure of the air cavity 6 and preventing gas leakage.

[0056] Reference Figure 2 and Figure 3 In this embodiment, the handheld spectrometer also includes a distance sensor 9. The distance sensor 9 is disposed on the side of the housing 1 near the light emitting end of the detector 31 to detect the distance between the detector 31 and the object 100 to be measured. The distance sensor 9 is electrically connected to the detector 31 to control the detector 31 to turn on and off. The detector 31 is turned on only when the distance sensor 9 detects that the detector 31 and the object 100 to be measured have reached a predetermined distance, and otherwise the detector 31 is turned off. This enables the detector 31 to turn on automatically when it approaches the object 100 to be measured, avoiding energy waste caused by premature start-up and the risk of accidental opening that may irradiate the operator's eyes.

[0057] The implementation principle of a handheld spectrometer in this application embodiment is as follows: During detection, when the handle 2 is held and the light emitting end of the detector 31 is gradually brought closer to the object to be tested 100, the adjusting rod 44 first contacts the object to be tested 100 and pushes the annular plate 43 to move towards the sealing plate 52. This action will compress the gas in the air cavity 6 and make the gas ejected from the light emitting end of the detector 31 through the connecting channel 311, effectively removing dust and other impurities attached to the surface of the object to be tested 100; the detector 31 is continuously brought closer to the object to be tested 100 until it comes into contact with the detection surface of the object to be tested 100; the first elastic element 42 can provide a certain buffer protection during this process to prevent the detector 31 from directly contacting the object to be tested 100 and damaging the detector 31. During the testing process, when the operator's hand shakes, causing the housing 1 to tilt slightly or move away from the object 100, the detector 31, under the action of the first elastic element 42, can ensure that the light emitting end of the detector 31 is always in close contact with the detection surface of the object 100. The elastic connection between the detector 31 and the housing 1 allows the detector 31 to tilt relative to the housing 1 to compensate for the tilt between the housing 1 and the detection surface of the object 100. This design allows the detector 31 to make appropriate adaptive adjustments following the changes in the posture of the housing 1, ensuring that even if the posture of the housing 1 is unstable, the detector 31 can maintain an ideal angular relationship with the object 100, thereby reducing light leakage and ultimately improving the accuracy and reliability of the spectrometer's detection data. Furthermore, due to the arrangement of the adjusting rod 44 and the annular plate 43, if the housing 1 tilts relative to the detection surface of the object 100 during the detection process, the adjusting rod 44, which is closer to the tilt direction, will be pushed by the increased force to deflect the annular plate 43 in the opposite direction. Since the annular plate 43 is connected to the detector 31, this action will directly drive the detector 31 to adjust its tilt angle synchronously, ensuring that it always maintains good contact with the detection surface of the object 100. At the same time, the special layout design of the adjusting rod 44 effectively extends the force arm, which means that even a slight force exerted by the object 100 on the adjusting rod 44 is enough to cause an angle change in the detector 31, thereby greatly improving the sensitivity and accuracy of the detector 31's angle correction.

[0058] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A handheld spectrometer, characterized in that, include: A housing (1) is provided with a handle (2); The detection component (3) includes a detector (31) and a display screen (32); the detector (31) is disposed inside the housing (1), and the housing (1) has a detection hole (11). The light emitting end of the detector (31) extends out of the housing (1) through the detection hole (11) to contact the detection surface of the object to be tested (100) for detection; the display screen (32) is electrically connected to the detector (31) to display the detection parameters; Adjustment component (4), the adjustment component (4) includes a flexible connector (41) and a first elastic element (42); the flexible connector (41) is disposed in the detection hole (11) to flexibly connect the detector (31) and the housing (1); the first elastic element (42) is disposed between the detector (31) and the housing (1), the first elastic element (42) enables the detector (31) to pop out of the housing (1) along the detection hole (11) and make the outer wall of the detector (31) elastically connected to the inner wall of the housing (1).

2. The handheld spectrometer according to claim 1, characterized in that: The adjustment assembly (4) further includes an annular plate (43) and at least three adjustment rods (44); the annular plate (43) is sleeved on the side of the detector (31) away from the light emitting end and parallel to the side of the detector (31) used to abut the object (100) being measured; the three adjustment rods (44) are distributed parallel to each other along the circumference of the detection hole (11) on the outer periphery of the detector (31) and are slidably connected to the housing (1), and the sliding direction of the three adjustment rods (44) is parallel to their own length direction; the adjustment rods ( One end of the adjustment rod (44) slides against one side of the annular plate (43), and the other end extends to the outside of the housing (1) for sliding against the detection surface of the object to be tested (100); when the ends of the three adjustment rods (44) away from the annular plate (43) are all against the object to be tested (100), the annular plate (43) is parallel to the detection surface of the object to be tested (100), and the annular plate (43) allows the detector (31) to be parallel to and against the detection surface of the object to be tested (100) on one side of the object to be tested (100).

3. A handheld spectrometer according to claim 2, characterized in that: It also includes a dust removal assembly (5), which includes a sleeve (51), a sealing plate (52), and a second elastic element (53); the sleeve (51) is fitted around the outer periphery of the detector (31) and located on the side of the annular plate (43) away from the light emitting end of the detector (31); one end of the sealing plate (52) is sealed to the outer wall of the detector (31), and the other end is sealed to the end of the sleeve (51) away from the annular plate (43); the inner and outer walls of the annular plate (43) are respectively sealed and slidably abutted against the outer wall of the detector (31) and the inner wall of the sleeve (51) to form a sealed air cavity (6) between the annular plate (43), the sleeve (51), the sealing plate (52), and the detector (31); the dust removal assembly (5) includes a sleeve (51), a sealing plate (52), and a second elastic element (53); the sleeve (51) is fitted around the outer periphery of the detector (31) and located on the side of the annular plate (43) away from the light emitting end of the detector (31); one end of the sealing plate (52) is sealed to the outer wall of the detector (31), and the other end of the sleeve (52) to form a sealed air cavity (6) between the annular plate (43), the sleeve (51), the sealing plate (52), and the detector (31); the dust removal assembly (5) includes a sleeve (51), a sealing plate (52), and a second elastic element (53); the sleeve (51) is fitted around the outer periphery of the detector (31) and located on the side of the annular plate (43), the sleeve (51), the sealing plate (52), and the detector (31); the sleeve (51) is fitted around the outer periphery of the detector (31), and located on the side of the annular plate (43), the sleeve (51), the sealing plate (52), and The detector (31) has a connecting channel (311) at one end, which is connected to the air cavity (6), and the other end extends to the light emitting end of the detector (31). The second elastic element (53) is disposed between the sealing plate (52) and the annular plate (43) so that the annular plate (43) bounces away from the end of the sleeve (51) away from the sealing plate (52). When the annular plate (43) bounces, the end of the adjusting rod (44) away from the annular plate (43) protrudes from the light emitting end of the detector (31). When the annular plate (43) moves to be closest to the sealing plate (52), the end of the adjusting rod (44) away from the annular plate (43) is on the same plane as the light emitting end of the detector (31).

4. A handheld spectrometer according to claim 3, characterized in that: The dust removal assembly (5) also includes a flexible tube (54), a first one-way valve (55) and a second one-way valve (56); one end of the flexible tube (54) is connected to the air chamber (6), and the other end extends to the outside of the housing (1) to connect to the outside; the first one-way valve (55) is installed on the flexible tube (54) to prevent the gas in the air chamber (6) from flowing out of the flexible tube (54); the second one-way valve (56) is installed in the connecting channel (311) to prevent the outside gas from entering the air chamber (6) through the connecting channel (311).

5. A handheld spectrometer according to claim 3, characterized in that: A sealing ring (7) is provided between the inner wall of the annular plate (43) and the detector (31), and between the outer wall of the annular plate (43) and the sleeve (51).

6. A handheld spectrometer according to claim 2, characterized in that: The central axis of the adjusting rod (44) is parallel to the central axis of the detection hole (11); the angle between the lines connecting the projection points of the central axes of the three adjusting rods (44) and the central axis of the detection hole (11) on a surface perpendicular to the central axis of the detection hole (11) is greater than 90° and less than 180°.

7. A handheld spectrometer according to claim 2, characterized in that: Both ends of the adjusting rod (44) are provided with universal ball joints (8).

8. A handheld spectrometer according to claim 1, characterized in that: The detection component (3) also includes a control button (33) and a battery (34); the control button (33) is located on the grip (2); the control button (33) is electrically connected to the detector (31) to control the detector (31) to emit detection light, and the battery (34) is detachably connected to the grip (2) to power the detector (31) and the display screen (32).

9. A handheld spectrometer according to claim 8, characterized in that: It also includes a distance sensor (9), which is disposed on the housing (1) near the light emitting end of the detector (31) to detect the distance between the detector (31) and the object to be measured (100); the distance sensor (9) is electrically connected to the detector (31) to control the detector (31) to turn on and off, and the detector (31) is turned on only when the distance sensor (9) detects that the detector (31) and the object to be measured (100) have reached a predetermined distance.

10. A handheld spectrometer according to claim 1, characterized in that: The outer wall of the grip (2) is provided with a rubber sleeve (21).

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