Ellipsoidal air chamber structure of non-dispersive infrared sensor

Abstract

The utility model relates to the technical field of non-dispersive infrared sensors, and discloses an ellipsoidal air chamber structure of a non-dispersive infrared sensor, which comprises an equipment main body, an air chamber mechanism and a detection mechanism, the air chamber mechanism comprises a lower cover main body, the top end of the lower cover main body is movably connected with an upper cover main body, and the upper cover main body is movably connected with the lower cover main body. The inner wall of the bottom end of the lower cover body and the inner wall of the top end of the upper cover body are of an ellipsoidal structure. The upper cover main body covers the top end of the lower cover main body, and the inner wall of the bottom end of the lower cover main body and the inner wall of the top end of the upper cover main body are of an ellipsoidal structure, so that an ellipsoidal gas chamber is formed in the whole gas chamber mechanism, meanwhile, the detection element and the infrared light source are located on the intersection of the ellipsoids, and the infrared light source emits infrared rays; the infrared rays are continuously reflected by the inner wall of the side surface of the gas chamber mechanism, so that the reflected light irradiates the detection element, and the detection element detects the infrared rays and analyzes the infrared rays to obtain the gas concentration, thereby being beneficial to improving the accuracy of a detection result.

Description

Technical Field

[0001] The utility model relates to the technical field of non-dispersive infrared sensors, and more specifically to an ellipsoidal air chamber structure of a non-dispersive infrared sensor. Background Art

[0002] A non-dispersive infrared sensor is an optical sensor composed of an infrared light source, an optical path, an infrared detector, a circuit and a software algorithm. It is mainly used to measure the concentration of gaseous complexes. The light passes through the gas to be measured in the optical path, through a narrow-band filter, and reaches the infrared detector. The concentration of the gas to be measured is determined by measuring the intensity of the infrared light entering the infrared sensor. When there is no gas to be measured in the environment, its intensity is the strongest. When the gas to be measured enters the gas chamber, the gas to be measured absorbs part of the infrared light, so the light intensity reaching the detector is weakened. By calibrating the degree and calibration of infrared light absorption at the zero point and the measuring point, the instrument can calculate the concentration of the gas to be measured.

[0003] Deficiencies of existing technology: For the convenience of production, the internal air chamber of existing non-dispersive infrared sensors is mostly a cylindrical structure. There are edges and corners inside the cylindrical structure, and the infrared rays are severely scattered when reflected internally, so less infrared rays are collected, which affects the detection results. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the utility model provides an ellipsoidal air chamber structure of a non-dispersive infrared sensor to solve the problems existing in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an ellipsoidal air chamber structure of a non-dispersive infrared sensor, comprising an equipment body, and also comprising: an air chamber mechanism and a detection mechanism, the bottom inner wall of the equipment body is movably connected to the bottom end of the air chamber mechanism, the bottom end of the detection mechanism is movably connected to the bottom inner wall of the equipment body, the equipment body comprises a base, the side of the base is provided with an external thread, the side of the external thread is threadedly connected with a protective shell, the top of the protective shell is provided with a first through hole, the air chamber mechanism comprises a lower cover body, the bottom end of the lower cover body is movably connected to the bottom inner wall of the base, the top of the lower cover body is movably connected to an upper cover body, the bottom inner wall of the lower cover body and the top inner wall of the upper cover body are ellipsoidal structures, and the top of the upper cover body is provided with a second through hole.

[0006] Furthermore, a lower mounting groove is formed at the top end of the lower cover body, an upper mounting groove is formed at the bottom end of the upper cover body, and a side surface of the upper mounting groove is movably connected to a side surface of the lower mounting groove.

[0007] Furthermore, an elastic clip strip is fixedly connected to the side of the lower mounting groove, and a clip slot is provided on the side of the upper mounting groove at a position corresponding to the elastic clip strip, and the side of the clip slot is movably connected to the side of the elastic clip strip.

[0008] Furthermore, a mounting hole is opened at the top of the lower cover body, a buffer spring is fixedly connected to the bottom of the mounting hole, a touch switch is fixedly connected to the top of the buffer spring, and an indicator light is fixedly connected to the side of the lower cover body.

[0009] Furthermore, the detection mechanism includes a circuit board, a detection element is fixedly connected to the top of the circuit board, an infrared light source is fixedly connected to the top of the circuit board, a wiring plug is fixedly connected to the bottom of the circuit board, and the bottom end of the wiring plug passes through the bottom end of the base.

[0010] Furthermore, a second through groove is opened at the bottom end of the lower cover body corresponding to the position of the detection element, and the side of the second through groove is movably connected to the side of the detection element. A first through groove is opened at the bottom end of the lower cover body corresponding to the infrared light source, and the side of the first through groove is movably connected to the side of the infrared light source.

[0011] Furthermore, a dustproof net is movably connected to the inner wall of the top end of the protective shell, and the inner walls of the side surfaces of the lower cover body and the inner walls of the side surfaces of the upper cover body are coated with reflective materials.

[0012] Technical effects and advantages of the utility model:

[0013] 1. The utility model covers the top of the lower cover body with the upper cover body, and the bottom inner wall of the lower cover body and the top inner wall of the upper cover body are ellipsoidal structures, so that an ellipsoidal air chamber is formed inside the entire air chamber mechanism, and the detection element and the infrared light source are located at the intersection of the ellipsoid. The infrared light source emits infrared rays, which are continuously reflected by the side inner wall of the air chamber mechanism, so that the reflected light is irradiated on the detection element, and the infrared rays are detected by the detection element and the gas concentration is analyzed, which is conducive to improving the accuracy of the detection result.

[0014] 2. The utility model fixes the upper cover body and the lower cover body by placing the upper cover body on the top of the lower cover body, and making the lower mounting groove mesh with the upper mounting groove, and the elastic clip is inserted into the inside of the clip groove. At the same time, the buffer spring pushes the touch switch upward to make the touch switch contact with the bottom end of the upper cover body, so that the touch switch control indicator light turns green, indicating that the upper cover body is in good contact with the lower cover body without a gap, which is conducive to ensuring the integrity of the internal shape of the air chamber mechanism and improving the reflection efficiency of infrared rays. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the cross-sectional structure of the utility model;

[0016] Figure 2 For the utility model Figure 1 Schematic diagram of the structural explosion at A;

[0017] Figure 3 This is a schematic diagram of the internal structure of the lower cover body of the utility model;

[0018] Figure 4 This is a schematic diagram of the internal structure of the upper cover body of the utility model;

[0019] Figure 5 It is a schematic diagram of the overall structure of the utility model.

[0020] The accompanying drawings are marked as follows: 1. Equipment body; 101. Protective shell; 102. Base; 103. External thread; 104. First through hole; 2. Air chamber mechanism; 201. Lower cover body; 202. Upper cover body; 203. Lower mounting groove; 204. Upper mounting groove; 205. Buffer spring; 206. Mounting hole; 207. Touch switch; 208. Elastic clip strip; 209. Clip slot; 210. First through groove; 211. Second through groove; 212. Second through hole; 3. Detection mechanism; 301. Circuit board; 302. Detection element; 303. Infrared light source; 304. Wiring plug. DETAILED DESCRIPTION

[0021] The technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in the present invention. In addition, the forms of the various structures recorded in the following embodiments are merely illustrative. The ellipsoidal air chamber structure of a non-dispersive infrared sensor involved in the present invention is not limited to the various structures recorded in the following embodiments. All other implementations obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0022] Reference Figures 1 to 5The utility model provides an ellipsoidal air chamber structure of a non-dispersive infrared sensor, including a device body 1, and also including: an air chamber mechanism 2 and a detection mechanism 3, the bottom inner wall of the device body 1 is movably connected to the bottom end of the air chamber mechanism 2, the bottom end of the detection mechanism 3 is movably connected to the bottom inner wall of the device body 1, the device body 1 includes a base 102, the side of the base 102 is provided with an external thread 103, the side of the external thread 103 is threadedly connected with a protective shell 101, the order of the protective shell 101 is provided with a first through hole 104, the air chamber mechanism 2 includes a lower cover body 201, the bottom end of the lower cover body 201 is movably connected to the bottom inner wall of the base 102, the top of the lower cover body 201 is movably connected to the upper cover body 202, the bottom inner wall of the lower cover body 201 and the top inner wall of the upper cover body 202 are ellipsoidal structures, and the top of the upper cover body 202 is provided with a second through hole 212. During use, the detection mechanism 3 is installed on the top of the base 102, and then the lower cover body 201 is placed on the top of the base 102 and covered on the top of the detection mechanism 3, and then the upper cover body 202 is covered on the top of the lower cover body 201. The bottom inner wall of the lower cover body 201 and the top inner wall of the upper cover body 202 are ellipsoidal structures, so that an ellipsoidal air chamber is formed inside the entire air chamber mechanism 2. The protective shell 101 is fixed to the top of the base 102 through the external thread 103 and the lower cover body 201 and the upper cover body 202 are pressed tightly. During use, the circuit is connected through the detection mechanism 3, and the external air enters the air chamber mechanism 2 through the first through hole 104 and the second through hole 212. The detection mechanism 3 emits infrared rays, which are continuously reflected in the ellipsoidal space inside the air chamber mechanism 2, and the infrared rays are detected by the detection mechanism 3 and the gas concentration is analyzed.

[0023] Among them, a lower mounting groove 203 is opened at the top end of the lower cover body 201, and an upper mounting groove 204 is opened at the bottom end of the upper cover body 202. The side of the upper mounting groove 204 is movably connected with the side of the lower mounting groove 203, and the lower mounting groove 203 and the upper mounting groove 204 are evenly L-shaped. When the upper cover body 202 is covered on the lower cover body 201, the upper mounting groove 204 and the lower mounting groove 203 are meshed with each other to avoid gaps caused by contact.

[0024] Among them, an elastic clip 208 is fixedly connected to the side of the lower mounting groove 203, and a clip slot 209 is opened on the side of the upper mounting groove 204 corresponding to the position of the elastic clip strip 208. The side of the clip slot 209 is movably connected to the side of the elastic clip strip 208. When the upper mounting groove 204 contacts the lower mounting groove 203, the elastic clip strip 208 is inserted into the slot 209 to fix the upper cover body 202 and the lower cover body 201.

[0025] Among them, a mounting hole 206 is opened at the top of the lower cover body 201, and a buffer spring 205 is fixedly connected to the bottom end of the mounting hole 206, and a touch switch 207 is fixedly connected to the top of the buffer spring 205. An indicator light is fixedly connected to the side of the lower cover body 201. When the upper cover body 202 covers the top of the lower cover body 201, the buffer spring 205 pushes the touch switch 207 upward to make the touch switch 207 contact with the bottom end of the upper cover body 202, so that the touch switch 207 controls the indicator light to emit green light, indicating that the upper cover body 202 and the lower cover body 201 are in good contact without a gap.

[0026] Among them, the detection mechanism 3 includes a circuit board 301, the top of the circuit board 301 is fixedly connected to a detection element 302, the top of the circuit board 301 is fixedly connected to an infrared light source 303, the bottom of the circuit board 301 is fixedly connected to a wiring plug 304, the bottom end of the wiring plug 304 passes through the bottom end of the base 102, the wiring plug 304 passes through the bottom end of the base 102, and the electronic components of the detection mechanism 3 are connected to the circuit through the wiring plug 304. When in use, the infrared light source 303 and the detection element 302 are both extended into the lower cover body 201, and the infrared light source 303 emits infrared rays, which are reflected from the lower cover body 201 and the upper cover body 202 to the detection element 302 for inspection, thereby determining the air concentration.

[0027] Among them, a second through groove 211 is opened at the bottom end of the lower cover body 201 corresponding to the position of the detection element 302, and the side of the second through groove 211 is movably connected to the side of the detection element 302. A first through groove 210 is opened at the bottom end of the lower cover body 201 corresponding to the infrared light source 303, and the side of the first through groove 210 is movably connected to the side of the infrared light source 303. The infrared light source 303 passes through the first through groove 210 and the detection element 302 passes through the second through groove 211, so that the detection element 302 and the infrared light source 303 extend into the lower cover body 201. At the same time, the side of the first through groove 210 is tightly attached to the side of the infrared light source 303, and the side of the second through groove 211 is tightly attached to the side of the detection element 302 to avoid gaps.

[0028] Among them, the top inner wall of the protective shell 101 is movably connected with a dustproof net, the side inner walls of the lower cover body 201 and the side inner walls of the upper cover body 202 are coated with reflective materials, and the dustproof net is arranged between the top inner wall of the protective shell 101 and the top of the upper cover body 202 to prevent dust from entering the interior of the air chamber mechanism 2. During the detection process, infrared rays are reflected by the reflective materials on the sides of the upper cover body 202 and the lower cover body 201.

[0029] Working principle of the utility model: When assembling the device, place the circuit board 301 on the top of the base 102, and make the wiring plug 304 pass through the through hole at the bottom of the base 102, place the lower cover body 201 on the top of the base 102, and make sure that the infrared light source 303 passes through the first through slot 210 and the detection element 302 passes through the second through slot 211, so that the detection element 302 and the infrared light source 303 extend into the lower cover body 201, cover the upper cover body 202 on the top of the lower cover body 201, and make the lower mounting groove 203 and the upper mounting groove 204 mesh with each other, and the elastic clip 208 is clipped into the slot 209 to fix the upper cover body 202 and the lower cover body 201, and at the same time the buffer spring 205 pushes the touch switch 207 upward so that the touch switch 207 is aligned with the upper cover body 201. The bottom end of the cover body 202 contacts, so that the touch switch 207 controls the indicator light to turn green, indicating that the upper cover body 202 and the lower cover body 201 are in good contact without a gap. The skateboard dust net is placed on the top of the upper cover body 202, and the protective shell 101 is covered on the air chamber mechanism 2, and the lower cover body 201 and the base 102 are connected through the external thread 103. During use, the entire device is connected to the circuit through the wiring plug 304, and the external air enters the interior of the air chamber mechanism 2 through the first through hole 104 and the second through hole 212. The detection mechanism 3 emits infrared rays, which are irradiated on the reflective material on the inner wall of the lower cover body 201 and the upper cover body 202 for reflection, and are continuously reflected in the ellipsoidal space inside the air chamber mechanism 2. The infrared rays are detected by the detection mechanism 3 and the gas concentration is analyzed.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An ellipsoidal air chamber structure of a non-dispersive infrared sensor, comprising a device body (1), It is characterized in that Also includes: The device body (1) comprises an air chamber mechanism (2) and a detection mechanism (3), wherein the inner wall of the bottom end of the device body (1) is movably connected to the bottom end of the air chamber mechanism (2), and the bottom end of the detection mechanism (3) is movably connected to the inner wall of the bottom end of the device body (1), and the device body (1) comprises a base (102), and the side of the base (102) is provided with an external thread (103), and the side of the external thread (103) is threadedly connected to a protective shell (101), and the order of the protective shell (101) A first through hole (104) is provided, and the air chamber mechanism (2) comprises a lower cover body (201), the bottom end of the lower cover body (201) is movably connected to the bottom inner wall of the base (102), the top end of the lower cover body (201) is movably connected to the upper cover body (202), the bottom inner wall of the lower cover body (201) and the top inner wall of the upper cover body (202) are ellipsoidal structures, and the top end of the upper cover body (202) is provided with a second through hole (212).

2. The ellipsoidal air chamber structure of a non-dispersive infrared sensor according to claim 1, Features: The top end of the lower cover body (201) is provided with a lower mounting groove (203), the bottom end of the upper cover body (202) is provided with an upper mounting groove (204), and the side surface of the upper mounting groove (204) is movably connected to the side surface of the lower mounting groove (203).

3. The ellipsoidal air chamber structure of a non-dispersive infrared sensor according to claim 2, Features: An elastic clip strip (208) is fixedly connected to the side of the lower installation groove (203), and a clip slot (209) is provided on the side of the upper installation groove (204) at a position corresponding to the elastic clip strip (208), and the side of the clip slot (209) is movably connected to the side of the elastic clip strip (208).

4. The ellipsoidal air chamber structure of a non-dispersive infrared sensor according to claim 1, Features: The top of the lower cover body (201) is provided with a mounting hole (206), the bottom of the mounting hole (206) is fixedly connected to a buffer spring (205), the top of the buffer spring (205) is fixedly connected to a touch switch (207), and the side of the lower cover body (201) is fixedly connected to an indicator light.

5. The ellipsoidal air chamber structure of a non-dispersive infrared sensor according to claim 1, Features: The detection mechanism (3) comprises a circuit board (301), a detection element (302) is fixedly connected to the top of the circuit board (301), an infrared light source (303) is fixedly connected to the top of the circuit board (301), a wiring plug (304) is fixedly connected to the bottom of the circuit board (301), and the bottom end of the wiring plug (304) passes through the bottom end of the base (102).

6. The ellipsoidal air chamber structure of a non-dispersive infrared sensor according to claim 5, Features: A second through slot (211) is provided at the bottom end of the lower cover body (201) corresponding to the position of the detection element (302), and the side of the second through slot (211) is movably connected to the side of the detection element (302). A first through slot (210) is provided at the bottom end of the lower cover body (201) corresponding to the infrared light source (303), and the side of the first through slot (210) is movably connected to the side of the infrared light source (303).

7. The ellipsoidal air chamber structure of a non-dispersive infrared sensor according to claim 1, Features: The top inner wall of the protective shell (101) is movably connected to a dustproof net, and the side inner walls of the lower cover body (201) and the side inner walls of the upper cover body (202) are both coated with reflective material.

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