A handheld spectrometer

Abstract

This application discloses a handheld spectrometer, belonging to the field of spectrometer technology. The handheld spectrometer includes a housing, a laser, an optical path assembly, a spectrometer component, and two fiber optic components. By configuring a spectrometer component with a dual-channel structure and correspondingly configuring two fiber optic components, with the fiber optic heads of the two fiber optic components arranged on both sides of the laser's output port, the plasma signal is collected through the two fiber optic components and transmitted to the spectrometer component for subsequent analysis and processing, thereby improving the overall resolution of the spectrometer.

Description

Technical Field

[0001] This application belongs to the field of spectrometer technology, specifically relating to a handheld spectrometer. Background Technology

[0002] Commonly used handheld LIBS spectrometers consist of a head and a handle at the bottom of the head. These spectrometers are typically single-channel, with insufficient resolution, limited detection range, and low testing accuracy. Utility Model Content

[0003] The purpose of this application is to provide a handheld spectrometer to solve the problem of low measurement accuracy of existing handheld spectrometers mentioned in the background art.

[0004] To achieve the above objectives, this application provides the following technical solution: a handheld spectrometer, comprising:

[0005] The housing has a receiving portion extending in a first direction and a handle portion for the tester to hold;

[0006] The front housing is mounted on the front end of the receiving portion in a first direction, and the receiving portion and the front housing together define a second receiving area;

[0007] The laser is disposed within the second accommodating area;

[0008] An optical path assembly is disposed within the second accommodating region along the output laser path of the laser.

[0009] The spectrometer component is disposed within the second accommodating area and has a dual-channel structure;

[0010] Two optical fiber components, each having a first end connected to the spectrometer component and a second end located at the light outlet of the spectrometer component, with the second ends of the two optical fiber components located on both sides of the laser light outlet and at an angle to the laser path.

[0011] Furthermore, the handheld spectrometer also includes a touchscreen mounted on the rear end of the housing in the first direction.

[0012] Furthermore, the optical path component includes:

[0013] The second fixing seat is disposed within the second accommodating area and is spaced apart from the laser. The second fixing seat has a channel arranged along the output laser path and an accommodating groove on the front end surface of the second fixing seat.

[0014] An optical path sealing frame is disposed at the output end of the laser;

[0015] The lens is fixed to the rear end of the channel;

[0016] A window is fitted to the rear end of the receiving groove.

[0017] Furthermore, the optical path assembly also includes a test head assembly mounted on the front end of the front housing.

[0018] Furthermore, the handheld spectrometer also includes a protective gas assembly, which comprises:

[0019] A gas cylinder containing a protective gas, and an inlet for inserting the gas cylinder is provided on the top wall of the receiving part.

[0020] A pressure reducing valve is provided, with its input end connected to the outlet of the gas cylinder and its output end connected to a gas pipe. The protective gas in the gas cylinder is output to the detection point via the pressure reducing valve and the gas pipe.

[0021] Furthermore, a sealing plug is provided between the gas cylinder outlet and inlet walls.

[0022] Furthermore, the handheld spectrometer also includes a computing processing unit disposed in the second accommodating area and connected to the spectrometer component, a first driving board disposed in the first accommodating area and connected to the touch screen, and a second driving board disposed in the second accommodating area and connected to the laser.

[0023] Furthermore, the spectrometer component consists of two spectrometers.

[0024] Furthermore, at least a portion of the surface of the handle body is coated with a handle rubber.

[0025] Furthermore, the front housing is provided with a heat dissipation fin structure.

[0026] Compared with the prior art, the beneficial effects of this application are:

[0027] This application improves the overall resolution of the spectrometer by configuring a spectrometer component with a dual-channel structure and correspondingly configuring two optical fiber components. The fiber heads of the two optical fiber components are arranged on both sides of the laser output port. The plasma signal is collected by the two optical fiber components and transmitted to the spectrometer component for subsequent analysis and processing. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the external appearance of the spectrometer;

[0029] Figure 2 This is a cross-sectional view of the spectrometer's interior.

[0030] Figure 3 Exploded view of optical path components;

[0031] Figure 4 This is an enlarged view of the optical path components.

[0032] In the picture:

[0033] 101. Cover; 102. Body housing; 103. Front housing; 104. Main power switch; 105. Gas cylinder; 106. Trigger; 107. Battery assembly; 108. Handle rubber coating; 109. Status indicator light; 110. Touch screen;

[0034] 201. Battery connector; 202. First drive board; 203. Trigger switch; 204. Spectrometer mounting bracket; 205. Fiber optic component; 206. Second mounting base; 207. Test pad; 208. Pad positioning bracket; 209. Optical path sealing bracket; 210. Laser; 211. First mounting base; 212. Pressure reducing valve; 213. Gas connection connector; 214. Valve body mounting base; 215. Sealing plug; 216. Second drive board; 217. Display screen mounting base; 218. Computational processing unit; 219. Communication interface; 220. Spectrometer component;

[0035] 301. Lens; 302. Lens mounting bracket; 303. Window mounting bracket; 304. Window; 305. Shim adjustment bracket. Detailed Implementation

[0036] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0037] A handheld spectrometer, including a housing structure, as shown in the reference. Figure 1 The main body of the shell structure consists of the fuselage shell 102, the cover 101, and the front shell 103, as shown in the figure. Figure 2 The positional relationships between the spectrometer components are explained using the direction of the spectrometer in the diagram as a reference. The horizontal direction (left-right direction) is designated as the first direction, and the vertical direction (up-down direction) as the second direction. Specifically, the aforementioned housing 102 has a handle (not shown) for the operator to grip and a receiving portion (not shown) extending generally along the first direction. The handle defines a first receiving area (not shown) extending generally along the second direction. A handle coating 108 is provided on a portion of the outer surface of the handle to create an anti-slip design. Continuing to refer to… Figure 2 The aforementioned spectrometer also includes a battery component 107 disposed at the bottom end (second direction) of the handle. In some examples, the battery component 107 is a pluggable replaceable lithium battery. Correspondingly, the handle is provided with a battery plug 201 for use with the pluggable replaceable battery. Continuing to refer to... Figure 2The spectrometer also includes a first driving board 202 disposed in the first accommodating area. The first driving board 202 is configured as the subsequent touch screen 110 and temperature control driving board, that is, the first driving board 202 is equipped with a temperature control circuit.

[0038] Reference Figure 2 In the first direction, the aforementioned front housing 103 is mounted on the front end of the receiving portion of the body housing 102 (based on the position of the spectrometer in use, in the first direction, the end closer to the object to be tested is the front end, and the end closer to the tester is the rear end), and the front housing 103 and the receiving portion of the body housing 102 together define a second receiving range (not shown) that generally extends along the first direction. Further, the rear end of the aforementioned body housing 102 is provided with a cover 101, and a touch screen 110 and a status indicator light 109 are provided at the position of the cover 101. The status indicator light 109 can indicate the operating status of the equipment (e.g., the working status of the subsequent laser 210 and the gas pressure status of the gas cylinder 105). The touch screen 110 can display software information and test result information on the one hand, and on the other hand, the tester can perform interactive operations through the touch screen 110. In some examples, the aforementioned touch screen 110 is mounted on the body housing 102 through a display screen mounting bracket 217.

[0039] In some embodiments, the front housing 103 has a heat dissipation fin structure to improve the heat dissipation of the subsequent laser 210, thereby further improving the system performance.

[0040] Reference Figure 2 The spectrometer also includes a spectrometer component 220 disposed within the second accommodating area. The spectrometer component 220 is mounted on a spectrometer mounting bracket 204, and the spectrometer mounting bracket 204 is fixed to the inner wall of the housing 102 and constitutes part of the housing 102. The spectrometer component 220 is configured with a dual-channel design, that is, the spectrometer component 220 has a dual-channel structure. For example, the spectrometer component 220 is composed of two miniature spectrometers. Corresponding to the spectrometer component 220, the spectrometer also includes a second drive plate 216 disposed within the second accommodating area. The second drive plate 216 constitutes the drive plate of the spectrometer component 220.

[0041] In some embodiments, refer to Figure 2The aforementioned spectrometer also includes a laser 210 and an optical path assembly. The laser 210 is disposed within the second receiving area and connected to the front housing 103. The output laser path of the laser 210 is arranged along a first direction. In some examples, the aforementioned spectrometer also includes a first fixing seat 211, which is fixed to the inner wall of the front housing 103 by fasteners such as screws. The first fixing seat 211 serves as a mounting seat for the laser 210, that is, the laser 210 is assembled to the inner wall of the front housing 103 through the first fixing seat 211. Corresponding to the laser 210, the front end face of the aforementioned handle is provided with a switch structure for controlling the operation of the laser 210. For example, the switch structure includes a trigger 106 and a trigger switch 203. The tester controls the operation of the trigger switch 203 by operating (e.g., pressing) the trigger 106, that is, controlling the operation (opening and closing) of the laser 210.

[0042] Reference Figure 3 and combined Figure 4 The aforementioned optical path assembly is assembled within the cover 101 component and positioned along the output laser path of the laser 210. This optical path assembly is configured to transmit and focus the laser onto the sample surface, while simultaneously collecting the light signal emitted by the plasma and transmitting it to a subsequent spectrometer for analysis. In some embodiments, the optical path assembly includes a second fixing base 206, which is mounted on the first fixing base 211 and spaced from the laser 210 in a first direction. The second fixing base 206 contains a channel along the laser path, with the channel's axis coinciding with the laser path. A receiving groove is also provided on the front end face of the second fixing base 206. (Continuing to refer to...) Figure 3 The aforementioned optical path assembly also includes an optical path sealing frame 209, a lens 301, and a window 304. The optical path sealing frame 209 is disposed at the output end of the laser 210 and located between the laser 210 and the second mounting base 206. The lens 301 is mounted to the rear end of the inner channel of the second mounting base 206 via a lens mounting frame 302 and is covered by the optical path sealing frame 209. Correspondingly, the lens mounting frame 302 is assembled to the front end face of the second mounting base 206 using screws or other fasteners. (Continuing with...) Figure 4 The aforementioned window slat 304 is installed in the receiving groove on the second fixing seat 206 via the window slat fixing bracket 303.

[0043] Continue to refer to Figure 4The aforementioned optical path assembly also includes a test head assembly, which is tightly attached to the cover 101 via a second fixing seat 206. Specifically, the test head assembly includes a test pad 207, a pad positioning bracket 208, and a pad adjustment bracket 305. The test pad 207 is fixed on the pad positioning bracket 208, and the pad adjustment bracket 305 can adjust the position of the pad positioning bracket 208 via a thread to achieve position adjustment between the test port and the focal point.

[0044] Reference Figure 3 and combined Figure 2 The aforementioned spectrometer also includes two optical fiber components 205. Each optical fiber component 205 has a first end and a second end (optical fiber head). The first ends of both optical fiber components 205 are connected to the aforementioned spectrometer component 220. Specifically, when the spectrometer component 220 is composed of two miniature spectrometers, the first ends of the two optical fiber components 205 are respectively connected to one of the two miniature spectrometers, that is, the two optical fiber components 205 are connected to different miniature spectrometers. Correspondingly, the second ends of the aforementioned two optical fiber components 205 are both disposed on both sides of the light outlet of the laser 210 and are set at an angle to the laser path, that is, the second ends of the two optical fiber components 205 are mirror-symmetrical about the laser path. The plasma signal is collected by the two optical fiber components 205 and transmitted to the spectrometer component 220 for analysis and processing.

[0045] Reference Figure 2 The spectrometer also includes a computing processing unit 218 disposed in the second accommodating section. The computing processing unit 218 is connected to the spectrometer component 220. The top wall of the accommodating section is also provided with a main power switch 104, and the bottom wall of the accommodating section is provided with a communication interface 219.

[0046] In some embodiments, refer to Figure 2 The aforementioned spectrometer also includes a protective gas assembly, which comprises a gas cylinder 105 and a pressure reducing valve 212. The gas cylinder 105 stores a protective gas, such as argon. The top wall of the housing 102 has an inlet for inserting the gas cylinder 105, and a sealing plug 215 is provided between the outlet of the gas cylinder 105 and the inlet wall to prevent dust from entering the second accommodating area. Correspondingly, the pressure reducing valve 212 is fixed in the second accommodating area by a pressure reducing valve fixing seat, located above the first fixing seat 211. The input end of the pressure reducing valve 212 is sealed to the outlet of the gas cylinder 105, and the output end of the pressure reducing valve 212 has a gas connector 213 for connecting to a gas pipe. That is, the output port of the pressure reducing valve 212 is connected to a gas pipe, and the protective gas in the gas cylinder 105 is output to the detection point (see reference 212) via the pressure reducing valve 212 and the gas pipe. Figure 4 The arrowed lines in the diagram exemplify the direction of protective gas transmission.

[0047] When the spectrometer is working, the laser 210 emits a laser beam that passes through the focusing lens 301 and strikes the object to be measured. The resulting plasma signal is collected by two fiber optic components 205 and transmitted to the spectrometer component 220. The calculation and processing unit 218 acquires the signal through the data line and processes it, and finally displays it on the touch screen 110. During this process, the protective gas (hereinafter referred to as argon) in the bottle passes through the pressure reducing valve 212 and is blown to the point to be measured through the gas tube. The laser 210 is driven by the first drive board 202, and the laser emission is controlled by software or the trigger 106.

[0048] This application employs two miniature spectrometers and one high-energy miniature pulsed solid-state laser, equipped with a compact miniature temperature control circuit, adjustable miniature laser drive, and a touch screen 110. The core components are integrated into one unit. The signal collection device uses two specially designed fiber optic components 205 for separate collection, with the fiber optic heads fixed on both sides of the light output port at a certain angle to the light output path. The protective gas output port is located directly below the light output port, facing the excitation position. Multiple status indicator lights are set below the touch screen 110. The power supply component 107 uses a removable battery and is located at the bottom of the handle. The gas cylinder 105 is inserted obliquely into the top of the instrument and sealed with a rubber gasket when not in use. The gas path is controlled by a solenoid valve and operates synchronously with the laser.

[0049] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A handheld spectrometer, characterized in that, include: The housing (102) has a receiving portion extending in a first direction and a handle portion for a tester to hold; The front housing (103) is mounted on the front end of the receiving portion in a first direction, and the receiving portion and the front housing (103) together define a second receiving area; A laser (210) is disposed within the second accommodating area; An optical path assembly is disposed within the second accommodating region along the output laser path of the laser (210); The spectrometer component (220) is disposed within the second accommodating area and has a dual-channel structure; Two optical fiber components (205) each have a first end connected to the spectrometer component (220) and a second end set at the light output port of the spectrometer component (220). The second ends of the two optical fiber components (205) are respectively located on both sides of the light output port of the laser (210) and are set at an angle to the laser path.

2. A handheld spectrometer according to claim 1, characterized in that: The handheld spectrometer also includes a touchscreen (110) mounted on the rear end of the housing in the first direction.

3. A handheld spectrometer according to claim 1, characterized in that: The optical path component includes: The second fixing seat (206) is disposed in the second accommodating area and is spaced apart from the laser (210). The second fixing seat (206) has a channel arranged along the output laser path and an accommodating groove on the front end surface of the second fixing seat (206). An optical path sealing frame (209) is disposed at the output end of the laser (210); Lens (301) is fixed to the rear end of the channel; A window (304) is fitted to the rear end of the receiving groove.

4. A handheld spectrometer according to claim 1, characterized in that: The optical path assembly also includes a test head assembly mounted on the front end of the front housing (103).

5. A handheld spectrometer according to claim 1, characterized in that: The handheld spectrometer also includes a protective gas assembly, which comprises: A gas cylinder (105) contains a protective gas, and the top wall of the receiving part is provided with an inlet for inserting the gas cylinder (105). Pressure reducing valve (212), the input end of which is connected to the outlet of the gas cylinder (105), and the output port of the pressure reducing valve (212) is connected to a gas pipe. The protective gas in the gas cylinder (105) is output to the detection point through the pressure reducing valve (212) and the gas pipe.

6. A handheld spectrometer according to claim 5, characterized in that: A sealing rubber plug (215) is provided between the outlet and inlet walls of the gas cylinder (105).

7. A handheld spectrometer according to claim 2, characterized in that: The handheld spectrometer also includes a computing processing unit (218) disposed in the second accommodating area and connected to the spectrometer component (220), a first driving board (202) disposed in the first accommodating area and connected to the touch screen (110), and a second driving board (216) disposed in the second accommodating area and connected to the laser (210).

8. A handheld spectrometer according to claim 1, characterized in that: The spectrometer component (220) consists of two spectrometers.

9. A handheld spectrometer according to claim 1, characterized in that: At least a portion of the surface of the handle body is provided with a handle coating (108).

10. A handheld spectrometer according to claim 1, characterized in that: The front housing (103) is provided with a heat dissipation fin structure.

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