阅读说明：本技术 一种基于红外检测的酒精含量检测仪 (Alcohol content detector based on infrared detection ) 是由 洪绵猛 于 2021-09-04 设计创作，主要内容包括：本发明公开了一种基于红外检测的酒精含量检测仪,涉及酒精含量检测仪技术领域,包括第一机体、采样组件和红外检测组件,第一机体的内部上方设置有安置槽,且安置槽的内部固定有检测框,所述检测框的内部安装有红外光谱检测器,且检测框的前侧设置有嵌槽,所述安置槽的内部前侧转动安装有活动转杆,且活动转杆的中部一侧固定有伸缩杆,所述采样组件安置于伸缩杆的顶端,且采样组件包括橡胶包覆层、加热层、采样管和储气腔,所述橡胶包覆层的内侧固定有加热层,且加热层的内部安装有采样管。该基于红外检测的酒精含量检测仪,能够将红外光谱吹气检测与含酒精身体组织的红外辐射信号检测结合起来,两种检测数据结合能够使得检测结果更具说服力。(The invention discloses an alcohol content detector based on infrared detection, which relates to the technical field of alcohol content detectors and comprises a first machine body, a sampling assembly and an infrared detection assembly, wherein a placement groove is formed above the inner part of the first machine body, a detection frame is fixed in the placement groove, an infrared spectrum detector is installed in the detection frame, an embedding groove is formed in the front side of the detection frame, a movable rotating rod is rotatably installed in the front side of the interior of the placement groove, a telescopic rod is fixed on one side of the middle part of the movable rotating rod, the sampling assembly is arranged at the top end of the telescopic rod and comprises a rubber coating layer, a heating layer, a sampling pipe and a gas storage cavity, the heating layer is fixed on the inner side of the rubber coating layer, and the sampling pipe is installed in the heating layer. This alcohol content detection appearance based on infrared detection can blow the infrared spectrum and detect and combine with the infrared radiation signal detection of alcohol health tissue, and two kinds of detection data combine to make the testing result have more persuasion.)

1. The alcohol content detector based on infrared detection is characterized by comprising a first machine body (1), a sampling assembly (8) and an infrared detection assembly (17), wherein a placement groove (2) is formed in the upper portion of the inside of the first machine body (1), a detection frame (3) is fixed inside the placement groove (2), an infrared spectrum detector (4) is installed inside the detection frame (3), a caulking groove (5) is formed in the front side of the detection frame (3), a movable rotating rod (6) is rotatably installed on the front side inside the placement groove (2), a telescopic rod (7) is fixed on one side of the middle of the movable rotating rod (6), the sampling assembly (8) is arranged at the top end of the telescopic rod (7), the sampling assembly (8) comprises a rubber coating layer (801), a heating layer (802), a sampling pipe (803) and a gas storage cavity (804), and the heating layer (802) is fixed on the inner side of the rubber coating layer (801), and the internally mounted of zone of heating (802) has sampling pipe (803), the below of sampling pipe (803) is fixed with gas storage chamber (804), one side of first organism (1) is passed through axis of rotation (10) and is rotated and install second organism (11), and the top middle part of second organism (11) is provided with down detection zone (12), both sides all are fixed with carriage (13) around the top of second organism (11), and the top of carriage (13) is glued and is had flexible pad (14), top one side of second organism (11) is provided with movable pivot (15), and the top of activity pivot (15) installs hydraulic stem (16), infrared detection subassembly (17) are settled in the top of hydraulic stem (16).

2. The alcohol content detecting instrument based on infrared detection as claimed in claim 1, wherein the rubber coating layer (801) is an arc-shaped structure, and a semi-enclosed structure is formed between the rubber coating layer (801) and the heating layer (802) and the sampling tube (803).

3. The alcohol content detecting instrument based on infrared detection as claimed in claim 1, wherein the sampling tube (803) and the gas storage cavity (804) are communicated with each other, and the gas storage cavity (804) and the caulking groove (5) are matched in size.

4. The alcohol content detector based on infrared detection as claimed in claim 1, wherein the sampling assembly (8) further comprises an air outlet (805), a micro exhaust fan (806), an air inlet (807), a placement pipe sleeve (808) and a sealing layer (809), the air outlet (805) is arranged on one side of the sampling pipe (803), the micro exhaust fan (806) is installed on the outer side of the air outlet (805), the air inlet (807) is arranged on the other side of the sampling pipe (803), the placement pipe sleeve (808) is fixed on the outer side of the air inlet (807), and the sealing layer (809) is embedded in the top end of the inner wall of the placement pipe sleeve (808).

5. The alcohol content detector based on infrared detection as claimed in claim 4, wherein a replacement head assembly (9) is mounted at one end of the placement pipe sleeve (808), the replacement head assembly (9) comprises a sampling pipe head (901), an air blowing hopper (902), a filtering membrane (903), an air guide block (904), a hydrophilic coating (905) and a threaded connection pipe (906), the air blowing hopper (902) is fixed above the sampling pipe head (901), the filtering membrane (903) is arranged above the middle upper part in the sampling pipe head (901), the air guide block (904) is fixed below the sampling pipe head (901), and the threaded connection pipe (906) is fixed at one side, close to the placement pipe sleeve (808), of the bottom end of the sampling pipe head (901).

6. The alcohol content measuring instrument based on infrared detection as claimed in claim 5, wherein the sampling tube head (901) is in an L-shaped structure, the sampling tube head (901) is screwed with the mounting sleeve (808) through a screwed pipe (906), and the sampling tube head (901) and the sampling tube (803) are communicated with each other.

7. The alcohol content detecting instrument based on infrared detection as claimed in claim 1, wherein the carrying frame (13) and the flexible pad (14) are both arc-shaped structures, and two carrying frames (13) are symmetrically arranged about the transverse center line of the second body (11).

8. An infrared detection-based alcohol content detection instrument according to claim 1, wherein said infrared detection assembly (17) comprises an upper frame (1701), an upper detection area (1702), an infrared emitter (1703) and an infrared reflective sensor (1704), wherein the upper detection area (1702) is disposed below the upper frame (1701), and the infrared emitter (1703) and the infrared reflective sensor (1704) are mounted on the lower interior side of the upper detection area (1702) and the upper interior side of the lower detection area (12).

9. The infrared detection-based alcohol content detector as claimed in claim 8, characterized in that the upper frame (1701) is an arc-shaped structure, the upper frame (1701) is fixedly connected with the top end of the hydraulic rod (16), and the vertical center line of the upper frame (1701) is coincident with the vertical center line of the carrying frame (13).

10. The alcohol content detecting instrument based on the infrared detection as claimed in claim 1, wherein a first display screen (18) and a second display screen (19) are further installed on the surface of the first body (1), support rods (20) are fixed on two sides of the lower portion of the first body (1), a base (21) is installed below the support rods (20), and a movable drawer (22) is slidably arranged inside the base (21).

Technical Field

The invention relates to the technical field of alcohol content detectors, in particular to an alcohol content detector based on infrared detection.

Background

The alcohol content detector can be used for the law enforcement traffic police to specifically treat the drinking amount of a drunk driver, and can also be used for detecting the alcohol content in gas exhaled by a human body in other occasions, so that casualties and heavy property loss are avoided, and whether the driver drives after drinking can be identified. With the development of social economy, accidents caused by drunk driving behaviors are more and more, the influence on the society is larger and larger, and economic loss caused by traffic accidents is quite remarkable, so that an alcohol content detector is required to be used for law enforcement detection.

The existing alcohol content detector mostly analyzes gas concentration and alcohol content through resistance change during detection, detection time is long, the detection result is influenced by the fact that condensation easily occurs in gas during detection of a general alcohol content detector based on infrared detection, infrared spectrum blowing detection cannot be combined with infrared radiation signal detection of alcohol-containing body tissues, and therefore the alcohol content detector based on infrared detection is provided.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides an alcohol content detector based on infrared detection, which solves the existing problems in the background technology.

In order to achieve the purpose, the invention is realized by the following technical scheme: an alcohol content detector based on infrared detection comprises a first body, a sampling assembly and an infrared detection assembly, wherein a placement groove is formed in the upper portion of the inside of the first body, a detection frame is fixed inside the placement groove, an infrared spectrum detector is installed inside the detection frame, an embedding groove is formed in the front side of the detection frame, a movable rotating rod is rotatably installed in the front side of the inside of the placement groove, a telescopic rod is fixed on one side of the middle of the movable rotating rod, the sampling assembly is arranged at the top end of the telescopic rod and comprises a rubber coating layer, a heating layer, a sampling pipe and a gas storage cavity, the heating layer is fixed on the inner side of the rubber coating layer, the sampling pipe is installed inside the heating layer, the gas storage cavity is fixed below the sampling pipe, a second body is rotatably installed on one side of the first body through a rotating shaft, and a lower detection area is arranged in the middle of the upper portion of the second body, bearing frames are fixed on the front side and the rear side of the upper portion of the second machine body, a flexible pad is connected to the upper portion of each bearing frame in a glued mode, a movable rotating shaft is arranged on one side of the upper portion of the second machine body, a hydraulic rod is installed above the movable rotating shaft, and the infrared detection assembly is arranged on the top end of the hydraulic rod.

Optionally, the rubber coating is of an arc-shaped structure, and a semi-surrounding structure is formed between the rubber coating and the heating layer as well as between the rubber coating and the sampling pipe.

Optionally, the sampling pipe is communicated with the gas storage cavity, and the gas storage cavity is matched with the caulking groove in size.

Optionally, the sampling subassembly still includes gas outlet, miniature exhaust fan, air inlet, settles pipe box and sealing layer, one side of sampling pipe is provided with the gas outlet, and the outside of gas outlet installs miniature exhaust fan, the opposite side of sampling pipe is provided with the air inlet, and the outside of air inlet is fixed with settles the pipe box, the inner wall top of settling the pipe box is embedded to have the sealing layer.

Optionally, settle the one end of pipe box and install and replace first subassembly, and replace first subassembly and include that sampling tube head, blowing fill, filtration membrane, air guide block, hydrophilic coating and screwed pipe, the top of sampling tube head is fixed with the blowing fill, and the middle upper side in the inside of sampling tube head is provided with filtration membrane, the inside below of sampling tube head is fixed with the air guide block, and the bottom of sampling tube head is fixed with screwed pipe near one side of settling the pipe box.

Optionally, the sampling tube head is an "L" shaped structure, and the sampling tube head forms a threaded screw connection with the mounting tube sleeve through a threaded connection tube, and the sampling tube head and the sampling tube are communicated with each other.

Optionally, the bearing frame and the flexible pad are both arc-shaped structures, and two bearing frames are symmetrically arranged on the transverse center line of the second machine body.

Optionally, the infrared detection subassembly includes the upper ledge, goes up detection zone, infrared emitter and infrared reflection sensor, the below of upper ledge is provided with the detection zone, and goes up the inside downside of detection zone and the inside upside of lower detection zone and all install infrared emitter and infrared reflection sensor.

Optionally, the upper frame is of an arc-shaped structure, the top end of the upper frame is fixedly connected with the top end of the hydraulic rod, and the vertical center line of the upper frame coincides with the vertical center line of the bearing frame.

Optionally, the surface of the first body is further provided with a first display screen and a second display screen, supporting rods are fixed on two sides of the lower portion of the first body, a base is installed below the supporting rods, and a movable drawer is arranged inside the base in a sliding mode.

The invention provides an alcohol content detector based on infrared detection, which has the following beneficial effects:

this alcohol content detection appearance based on infrared detection can blow the infrared spectrum and detect and combine with the infrared radiation signal detection of alcohol health tissue, and two kinds of detection data combine to make the testing result have more persuasion.

1. This alcohol content detector based on infrared detection is provided with sampling assembly, be convenient for rotate the position of adjustment telescopic link and sampling assembly through the activity bull stick, make sampling assembly upwards rotate when using, turn round to the inside of resettlement groove when not using and make resettlement groove accomodate it, the position height of the flexible adjustment sampling assembly of being convenient for through the telescopic link, the convenience is blown to the inside of sampling tube head through the blowing fill that leaks hopper-shaped, communicate each other between sampling tube head and the sampling tube and make gaseous inside that enters into the sampling tube, can discharge gas through gas outlet and miniature exhaust fan after detecting.

2. This alcohol content detector based on infrared detection is provided with the sampling subassembly, the rubber coating is arc column structure and can sets up in the outside half structure that surrounds of pipe form sampling pipe, make the zone of heating can heat the inside of sampling pipe, thereby avoid the inside sampling gas of sampling pipe to produce the condensation, the inside gas of sampling pipe can circulate to the gas storage intracavity portion of integration, the gas storage intracavity can be gone into among the caulking groove, conveniently detect the gas in the infrared spectrum detector through the inside infrared spectrum detector of detection frame, absorb infrared degree through the alcohol molecule, confirm the content of alcohol.

3. This alcohol content detector based on infrared detection is provided with the replacement head subassembly, the sampling tube head is "L" column structure can carry out the convection current buffering once to the gas of blowing in the sampling pipe, thereby hold back moisture content in the gas, at first can filter the saliva composition in the gas through filtration membrane, then the air guide piece of arc form can make the air current turn to the one side of sampling pipe, the hydrophilic coating on air guide piece surface can be held back the moisture content in the air current of impacting the air guide piece surface simultaneously, thereby make the gas humidity who enters into in the sampling pipe reduce, be favorable to improving the detection precision.

4. This alcohol content detector based on infrared detection is provided with the replacement head subassembly, through the threaded connection with settle the dismouting between the pipe box of mutually supporting between being convenient for sample tube head and the sampling pipe, thereby be convenient for change the sample tube head, the inside slip of base is provided with movable drawer, removable sample tube head accessory is stored in movable drawer's inside, the bracing piece can bear the weight of to first organism, first organism is the slope column structure and facilitates the operation and use, be convenient for rotate the adjustment second organism through the axis of rotation, make the second organism can be the horizontality, make things convenient for the use of second organism.

5. This alcohol content detector based on infrared detection is provided with infrared detection subassembly, be convenient for rotate the position of adjustment hydraulic stem and upper ledge through the activity pivot, make the upper ledge can be located under the detection zone directly over, the upside that the upper ledge that is the arc form corresponds the upper limbs, infrared emitter and infrared reflection sensor through the inside downside of last detection zone and the inside upside of lower detection zone can carry out infrared detection to the upper and lower side of upper arm again, utilize the principle development that contains alcohol health organization absorbs more light than normal tissue, after shining the infrared ray at human skin, can analyze alcohol content through the spectral graph of the infrared radiation who observes the reflection back, thereby can learn whether alcohol content in being detected person's blood exceeds standard.

Drawings

FIG. 1 is a schematic top view of the present invention;

FIG. 2 is an enlarged schematic view of a sampling assembly according to the present invention;

FIG. 3 is a side view of the sampling tube of the present invention;

FIG. 4 is an enlarged front view of the replacement head assembly of the present invention;

FIG. 5 is a schematic front view of the second body and the infrared detecting assembly of the present invention;

fig. 6 is a schematic side view of the first body of the present invention.

In the figure: 1. a first body; 2. a placing groove; 3. detecting a frame; 4. an infrared spectrum detector; 5. caulking grooves; 6. a movable rotating rod; 7. a telescopic rod; 8. a sampling component; 801. a rubber coating layer; 802. a heating layer; 803. a sampling tube; 804. a gas storage cavity; 805. an air outlet; 806. a micro exhaust fan; 807. an air inlet; 808. arranging a pipe sleeve; 809. a sealing layer; 9. a replacement head assembly; 901. a sampling tube head; 902. an air blowing hopper; 903. a filtration membrane; 904. a gas guide block; 905. a hydrophilic coating; 906. a threaded connection pipe; 10. a rotating shaft; 11. a second body; 12. a lower detection zone; 13. a bearing frame; 14. a flexible pad; 15. a movable rotating shaft; 16. a hydraulic lever; 17. an infrared detection assembly; 1701. putting the frame on; 1702. an upper detection zone; 1703. an infrared emitter; 1704. an infrared reflective sensor; 18. a first display screen; 19. a second display screen; 20. a support bar; 21. a base; 22. a movable drawer is provided.

Detailed Description

Referring to fig. 1 to 6, the present invention provides a technical solution: an alcohol content detector based on infrared detection comprises a first machine body 1, a sampling component 8 and an infrared detection component 17, wherein a placement groove 2 is arranged above the inside of the first machine body 1, a detection frame 3 is fixed inside the placement groove 2, an infrared spectrum detector 4 is installed inside the detection frame 3, an embedding groove 5 is arranged on the front side of the detection frame 3, a movable rotating rod 6 is rotatably installed on the front side inside the placement groove 2, an expansion rod 7 is fixed on one side of the middle part of the movable rotating rod 6, the sampling component 8 is arranged at the top end of the expansion rod 7, the sampling component 8 comprises a rubber coating layer 801, a heating layer 802, a sampling pipe 803 and a gas storage cavity 804, a heating layer 802 is fixed on the inner side of the rubber coating layer 801, a sampling pipe 803 is installed inside the heating layer 802, a gas storage cavity 804 is fixed below the sampling pipe 803, a second machine body 11 is rotatably installed on one side of the first machine body 1 through a rotating shaft 10, and the top middle part of second organism 11 is provided with detection zone 12 down, and both sides all are fixed with carriage 13 around the top of second organism 11, and the top of carriage 13 is glued and is had flexible pad 14, and top one side of second organism 11 is provided with movable pivot 15, and the hydraulic stem 16 is installed to the top of movable pivot 15, and infrared detection subassembly 17 settles in the top of hydraulic stem 16.

Referring to fig. 3, the rubber coating 801 is an arc-shaped structure, and a semi-enclosed structure is formed between the rubber coating 801 and the heating layer 802 and the sampling tube 803; the sampling pipe 803 is communicated with the gas storage cavity 804, and the gas storage cavity 804 is matched with the caulking groove 5 in size;

rubber cladding layer 801 is arc column structure and can sets up in the outside half structure that surrounds of constituting of pipe form sampling pipe 803, make the heating layer 802 can heat the inside of sampling pipe 803, thereby avoid the inside sampling gas of sampling pipe 803 to produce the condensation, the inside gas of sampling pipe 803 can circulate to the integration inside gas storage chamber 804, gas storage chamber 804 can be gone into among the caulking groove 5, conveniently detect the gas in infrared spectrum detector 4 through the inside infrared spectrum detector 4 of detection frame 3, absorb infrared degree through the alcohol molecule, confirm the content of alcohol.

Referring to fig. 2, the sampling assembly 8 further includes an air outlet 805, a micro exhaust fan 806, an air inlet 807, a mounting sleeve 808 and a sealing layer 809, the air outlet 805 is disposed on one side of the sampling tube 803, the micro exhaust fan 806 is mounted on the outer side of the air outlet 805, the air inlet 807 is disposed on the other side of the sampling tube 803, the mounting sleeve 808 is fixed on the outer side of the air inlet 807, and the sealing layer 809 is embedded in the top end of the inner wall of the mounting sleeve 808;

the operation is as follows, one end of the mounting pipe sleeve 808 is provided with the replacing head assembly 9, the replacing head assembly 9 comprises a sampling pipe head 901, an air blowing hopper 902, a filtering membrane 903, an air guide block 904, a hydrophilic coating 905 and a threaded connection pipe 906, the air blowing hopper 902 is fixed above the sampling pipe head 901, the filtering membrane 903 is arranged above the middle inside of the sampling pipe head 901, the air guide block 904 is fixed below the inside of the sampling pipe head 901, and the threaded connection pipe 906 is fixed at one side, close to the mounting pipe sleeve 808, of the bottom end of the sampling pipe head 901.

Referring to fig. 4, the sampling tube head 901 is in an L-shaped structure, the sampling tube head 901 is screwed with the mounting tube sleeve 808 through a screwed pipe 906, and the sampling tube head 901 is communicated with the sampling tube 803;

sampling tube head 901 is "L" column structure and can carries out a convection buffer to the gas that blows in sampling pipe 803, thereby intercept moisture content in the gas, at first can filter the saliva composition in the gas through filtration membrane 903, then the air guide piece 904 of arc form can make the air current turn to the one side of sampling pipe 803, the hydrophilic coating 905 on air guide piece 904 surface can intercept the moisture content in the air current that strikes air guide piece 904 surface simultaneously, thereby make the gas humidity that enters into in the sampling pipe 803 reduce, be favorable to improving and detect the precision, through the threaded connection pipe 906 with settle the dismouting between mutually supporting between pipe sleeve 808 and being convenient for sampling tube head 901 and the sampling pipe 803, thereby be convenient for change sampling tube head 901.

Referring to fig. 5, the carrying frame 13 and the flexible pad 14 are both arc-shaped structures, and two carrying frames 13 are symmetrically arranged about the transverse center line of the second body 11;

the flexible pad 14 that is arc column structure accords with human mechanics and is convenient for carry out flexible bearing to the wrist portion, and the bearing frame 13 that two symmetries set up around can carry out the bearing of waiting high to the upper limbs position front and back side of examining the person to be convenient for carry out infrared detection to the limbs position of examining the person.

Referring to fig. 5, infrared sensing assembly 17 includes an upper frame 1701, an upper sensing area 1702, an infrared emitter 1703 and an infrared reflective sensor 1704, wherein upper sensing area 1702 is disposed below upper frame 1701, and both the lower interior side of upper sensing area 1702 and the upper interior side of lower sensing area 12 are mounted with infrared emitter 1703 and infrared reflective sensor 1704; the upper frame 1701 is of an arc-shaped structure, the upper frame 1701 is fixedly connected with the top end of the hydraulic rod 16, and the vertical center line of the upper frame 1701 is superposed with the vertical center line of the bearing frame 13;

the operation is as follows, the upper frame 1701 that is the arc form corresponds the upside of upper limbs, be convenient for rotate the position of adjustment hydraulic stem 16 and upper frame 1701 through activity pivot 15, make upper frame 1701 can be located under the detection zone 12 directly over, infrared emitter 1703 and infrared reflection sensor 1704 are all installed to the inside downside of upper detection zone 1702 and the inside upside of lower detection zone 12, utilize the principle development that contains alcohol body tissue absorbs more light than normal tissue, after shining infrared ray on human skin, can analyze the alcohol content through observing the spectral graph of the infrared radiation that reflects back, thereby can learn whether the alcohol content in the person's that is examined blood exceeds standard.

Referring to fig. 6, the surface of the first body 1 is further provided with a first display screen 18 and a second display screen 19, supporting rods 20 are fixed on both sides of the lower portion of the first body 1, a base 21 is installed below the supporting rods 20, and a movable drawer 22 is slidably arranged inside the base 21;

the specific operation is as follows, removable sampling tube head 901 accessory is stored to the inside of activity drawer 22, and bracing piece 20 can bear first organism 1, and first organism 1 is the convenient operation of slope column structure and uses, is convenient for rotate adjustment second organism 11 through axis of rotation 10 for second organism 11 can be the horizontality, makes things convenient for the use of second organism 11.

In conclusion, when the alcohol content detector based on infrared detection is used, firstly, a user can rotate the telescopic rod 7 and the sampling assembly 8 upwards through the movable rotating rod 6, then the position height of the sampling assembly 8 can be adjusted through the telescopic rod 7 in a telescopic mode, then air can be blown into the sampling tube head 901 through the funnel-shaped air blowing hopper 902, the sampling tube head 901 and the sampling tube 803 are communicated with each other, so that air enters the sampling tube 803, saliva components in the air can be filtered through the filtering membrane 903 at the moment, then the air flow can be turned to one side of the sampling tube 803 through the arc-shaped air guide block 904, meanwhile, the hydrophilic coating 905 on the surface of the air guide block 904 can intercept moisture in the air flow impacting the surface of the air guide block 904, so that the humidity of the air entering the sampling tube 803 is reduced, and the detection precision is improved;

then the gas in the sampling pipe 803 can circulate to the gas storage cavity 804 of the integration, turn around the movable rotating rod 6 again, make the gas storage cavity 804 can be blocked in the caulking groove 5, the rubber coating 801 is the arc-shaped structure at this moment and can set up in the tubular sampling pipe 803 outside and form the structure of partly enclosing, make the heating layer 802 can heat the inside of the sampling pipe 803, thus avoid the sampling gas in the sampling pipe 803 to produce the condensation, detect the gas in the infrared spectrum detector 4 through the infrared spectrum detector 4 in the detection frame 3 at last, through the degree that the alcohol molecule absorbs the infrared ray, confirm the content of alcohol, and display the testing result through the first display screen 18, can discharge the gas through gas outlet 805 and miniature exhaust fan 806 after detecting;

then the user can rotate and adjust the second body 11 through the rotating shaft 10, so that the second body 11 is in a horizontal state, the upper arm is horizontally placed on the upper side of the flexible cushion 14, so that the flexible cushion 14 in an arc-shaped structure flexibly supports the wrist, then the orientation of the hydraulic rod 16 and the upper frame 1701 can be rotatably adjusted through the movable rotating shaft 15, so that the upper frame 1701 can be positioned right above the lower detection area 12, the upper frame 1701 in an arc shape corresponds to the upper side of the upper limb, then the upper and lower sides of the upper arm are subjected to infrared detection through the infrared emitter 1703 and the infrared reflection sensor 1704 which are arranged on the inner lower side of the upper detection area 1702 and the inner upper side of the lower detection area 12, the principle that alcohol-containing body tissues absorb more light than normal tissues is utilized, after the infrared rays are irradiated on the skin of the human body, the alcohol content can be analyzed by observing the spectrum pattern of the reflected infrared radiation, therefore, whether the alcohol content in the blood of the detected person exceeds the standard or not can be known, the detection result is displayed through the second display screen 19, and finally the alcohol content is determined by combining the detection results of the first display screen 18 and the second display screen 19, so that the error is reduced, and the using process of the whole alcohol content detector based on infrared detection is completed.