CN108732154B - Hand-held Raman spectrometer - Google Patents
Hand-held Raman spectrometer Download PDFInfo
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- CN108732154B CN108732154B CN201710277144.5A CN201710277144A CN108732154B CN 108732154 B CN108732154 B CN 108732154B CN 201710277144 A CN201710277144 A CN 201710277144A CN 108732154 B CN108732154 B CN 108732154B
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- 238000001069 Raman spectroscopy Methods 0.000 title claims abstract description 31
- 230000008054 signal transmission Effects 0.000 claims abstract description 11
- 230000000007 visual effect Effects 0.000 claims abstract description 8
- 230000003993 interaction Effects 0.000 claims abstract description 4
- 238000004891 communication Methods 0.000 claims description 11
- 238000012544 monitoring process Methods 0.000 abstract description 6
- 238000004880 explosion Methods 0.000 abstract description 4
- 238000001514 detection method Methods 0.000 description 9
- 238000001228 spectrum Methods 0.000 description 7
- 238000001237 Raman spectrum Methods 0.000 description 4
- 238000007689 inspection Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 3
- 238000002679 ablation Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000005422 blasting Methods 0.000 description 2
- 235000019504 cigarettes Nutrition 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 238000004020 luminiscence type Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000009172 bursting Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000000383 hazardous chemical Substances 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000001845 vibrational spectrum Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/65—Raman scattering
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/183—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a single remote source
Abstract
The invention discloses a handheld Raman spectrometer, which comprises a spectrometer body, a camera light path turning accessory and a control terminal, wherein the camera light path turning accessory is arranged on the spectrometer body; the front end face of the spectrometer body is provided with a nose cone and a camera; the camera light path turning accessory is arranged on the spectrometer body and used for turning the visual angle direction of the camera to the position of the nose cone; the spectrometer body is internally provided with a signal transmission unit, and the signal transmission unit is used for carrying out signal interaction between the spectrometer body and the control terminal. The invention can realize real-time video monitoring and remote control of the sample to be detected, prevent the explosion from accidentally damaging the working personnel and greatly improve the safety.
Description
Technical Field
The invention relates to the technical field of spectrum detection, in particular to a handheld Raman spectrometer.
Background
Raman spectroscopy is a vibrational spectrum of molecules that reflects the fingerprint characteristics of the molecule. The raman spectrometer detects and identifies a substance by detecting a raman spectrum generated by a raman scattering effect of the substance to be detected on the excitation light. The method is widely applied to the fields of liquid security inspection, jewelry inspection, explosive inspection, poison/medicine inspection and the like. Among them, when raman spectroscopy is applied to the rapid identification of explosives and hazardous chemicals. On the one hand, the instrument is required to be as small and light as possible for portability. On the other hand, the laser emitted by the raman spectrometer needs to be prevented from causing explosion when irradiating the detected object, so that the personal safety of users is threatened. In practice, how to prevent the detected object from bursting needs to realize the following two functions simultaneously: 1, realizing real-time detection of a detection sample; and 2, realizing remote control on the detection process. Portable raman spectrometers have been developed in the prior art, but in order to achieve a compact instrument, the nose cone and camera are both located on the same end face of the instrument and are fixed so that they cannot flex or move. When the sample is detected, the detected sample is placed at the nose cone, the laser emitted by the instrument irradiates the sample, and the identification of the substance is realized by detecting the Raman spectrum of the detected sample. At this moment, because nose cone and camera are all located the same terminal surface of instrument, cause the visual field of camera can not cover by survey sample, the camera can't shoot sample or video monitoring promptly. In addition, the existing portable raman spectrometer does not have the function of remote control operation. Particularly, how to develop a novel handheld raman spectrometer for realizing sample detection and remote control under real-time video detection is the direction that technicians in the field need to research, and effectively prevents workers from being injured when blasting accidents happen.
Disclosure of Invention
The invention provides a handheld Raman spectrometer which can realize real-time video monitoring and remote control on a sample to be detected, prevent explosion from accidentally damaging workers and greatly improve safety.
The adopted specific technical scheme is as follows:
a hand-held Raman spectrometer comprises a spectrometer body, a camera light path turning accessory and a control terminal; the front end face of the spectrometer body is provided with a nose cone and a camera; the camera light path turning accessory is arranged on the spectrometer body and used for turning the visual angle direction of the camera to the position of the nose cone; the spectrometer is characterized in that a signal transmission unit is arranged in the spectrometer body and used for signal interaction between the spectrometer body and the control terminal.
By adopting the technical scheme: the visual angle direction of the camera is turned to the nose cone through the camera light path turning accessory, so that the visual field of the camera can cover a tested sample arranged at the nose cone, and the tested sample is photographed or video monitored to generate an image file. The spectrometer body sends the acquired image file to the control terminal through the signal transmission unit and receives a control signal fed back by the control terminal, so that remote control operation is realized.
At this moment, because the nose cone and the camera are usually located on the same end face of the instrument, the field range of the camera cannot cover the tested sample, namely, the camera cannot photograph the sample or monitor videos. In order to solve the problem, the field direction of the camera is changed by arranging a camera light path turning accessory which can be installed or removed at any time, so that the camera can photograph a sample or monitor videos.
Preferably, in the above hand-held raman spectrometer: the camera light path turning accessory comprises a clamp, a reflector and a cylindrical shaft body; the clamp is fastened on the spectrometer body through a screw; a first sleeve and a second sleeve are arranged on one side edge of the clamp; a third sleeve and a fourth sleeve are arranged on the reflector; the cylindrical shaft body sequentially penetrates through the first sleeve, the third sleeve, the fourth sleeve and the second sleeve.
By adopting the technical scheme: the reflector is movably fixed on the clamp through the cylindrical shaft body and can rotate along the shaft body relative to the clamp. Anchor clamps pass through the screw and are fixed angle with the spectrum appearance body to through rotatory speculum, just can make the speculum realize the visual angle adjustment to the camera, make the visual angle of camera can cover the sample that awaits measuring that is located nose cone department, shoot and video monitoring the sample that awaits measuring.
More preferably, in the above hand-held raman spectrometer: the signal transmission unit comprises a Bluetooth module.
By adopting the technical scheme: when the detected article is not high in risk and the safe distance is estimated to be 5-10 m, bluetooth communication can be selected, the control terminal sends an instruction to the Raman spectrometer through Bluetooth, the Raman spectrometer detects the Raman spectrum of the detected article, and the measured spectrum data and the measured result are sent to the control terminal through Bluetooth.
Further preferably, in the raman spectrometer of the above formula: the signal transmission unit comprises a full-network wireless communication module.
By adopting the technical scheme; when the detected object is very dangerous and the safety distance is estimated to be more than 10 meters, the control terminal is connected to the cloud platform through the mobile/Unicom 2G, 3G, 4G and telecommunication 4G networks, and sends a detection instruction to the cloud platform and receives a detection result. The whole network wireless data communication module (such as SR-G402 tf) of the Raman spectrometer can be connected to the cloud platform through a mobile/Unicom 2G, 3G, 4G and telecom 4G network, and receives an instruction of the upper computer from the platform or sends measured spectrum data and a measured result to the cloud platform to be transferred to the upper computer.
Still more preferably, in the above-mentioned hand-held raman spectrometer: the control terminal adopts any one of a mobile phone, a PAD and a PC.
Still further preferably, in the above-mentioned hand-held raman spectrometer: the control terminal comprises an image reading unit, an image comparison unit, a control unit and an acousto-optic prompt unit; the image reading unit is used for reading an image signal output by the spectrometer body at the speed of 0 frame per second; the image comparison unit is used for comparing each frame of image signals two by two in sequence and respectively calculating the comparison difference value of the two image signals; the control unit is used for reading the comparison difference output by the image comparison unit, outputting a stop working signal when the comparison difference is not equal to zero, and controlling the spectrometer body to stop working; and the acousto-optic prompt unit is used for generating an acousto-optic prompt signal when the control unit outputs a stop working signal.
By adopting the technical scheme: and the control terminal continuously performs difference on the front and rear frames of images shot by the camera. Since the sample is static, if there is no abnormal phenomenon such as burning luminescence or generation of smoke due to ablation caused by excessive laser power, the difference between the two images is equal to zero. If appear ablating and lead to the burning to give off light or produce unusual phenomena such as dense cigarette, the difference of two frame images can be showing not be equal to zero, and the laser instrument on the spectrum appearance body is closed immediately to the control unit this moment, opens reputation suggestion simultaneously and reminds the staff to detect and appear dangerously.
Compared with the prior art, the invention has simple structure and easy preparation. The system can realize real-time video monitoring and remote control of a sample to be detected, prevent the explosion from accidentally damaging workers and greatly improve the safety.
Drawings
The invention is described in further detail below with reference to the following figures and embodiments:
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural view of the optical path turning accessory of the camera in fig. 1;
the correspondence between each reference numeral and the part name is as follows:
1. a spectrometer body; 2. a camera light path turning accessory; 3. a control terminal; 11. a nose cone; 12. a camera; 21. a clamp; 22. a mirror; 23. a cylindrical shaft body; 211. a first sleeve; 212. a second sleeve; 221. a third sleeve; 222. a fourth sleeve;
Detailed Description
In order to more clearly illustrate the technical solution of the present invention, the present invention will be further described with reference to the accompanying drawings.
FIG. 1 shows example 1 of the present invention:
a hand-held Raman spectrometer comprises a spectrometer body 1, a camera light path turning accessory 2 and a control terminal 3; the front end face of the spectrometer body 1 is provided with a nose cone 11 and a camera 12; the camera light path turning accessory 2 is used for turning the view angle direction of a camera 12 to a nose cone 11; the spectrometer body 1 is internally provided with a signal transmission unit which is used for realizing signal interaction between the spectrometer body 1 and the control terminal 3.
The camera light path turning accessory 2 comprises a clamp 21, a reflector 22 and a cylindrical shaft body 23; the clamp 21 is fastened on the spectrometer body 1 through screws; a first sleeve 211 and a second sleeve 212 are arranged on one side of the clamp 21; a third sleeve 221 and a fourth sleeve 222 are arranged on the reflector 22; the cylindrical shaft body 23 sequentially penetrates the first sleeve 211, the third sleeve 221, the fourth sleeve 222 and the second sleeve 212.
The signal transmission unit comprises a full-network wireless communication module. The spectrometer body 1 uses ARM as a main processor, a whole network communication wireless data communication module and a Bluetooth module are integrated on a circuit main board of the spectrometer body, and the spectrometer body is provided with an SIM card interface and supports high-speed access of mobile/communication 2G, 3G, 4G and telecommunication 4G networks. The wireless data communication module can be selected from USR-G402tf, but is not limited to USR-G402tf. The ARM processor and the SR-G402tf communicate with the control terminal 3 through a USB interface, and the control terminal adopts any one of a mobile phone, a PAD and a PC. The control terminal 3 comprises an image reading unit, an image comparison unit, a control unit and an acousto-optic prompt unit; the image reading unit is used for reading an image signal output by the spectrometer body 1 at the speed of 10 frames per second; the image comparison unit is used for comparing each frame of image signals two by two in sequence and respectively calculating the comparison difference value of the two image signals; the control unit is used for reading the comparison difference output by the image comparison unit, outputting a stop working signal when the comparison difference is not equal to zero, and controlling the spectrometer body 1 to stop working; and the acousto-optic prompt unit is used for generating acousto-optic prompt signals when the control unit outputs the stop working signals.
In practice, when the danger of the detected object is not too high, namely the safety distance is estimated to be within 5 to 10 meters, an operator is allowed to operate the control terminal within 5 to 10 meters away from the detected object, bluetooth communication can be selected, namely the control terminal sends an instruction to the Raman spectrometer through Bluetooth, the Raman spectrometer detects the Raman spectrum of the detected object, and the measured spectrum data and the measured result are sent to the control terminal through Bluetooth.
And when the detected object is very dangerous, namely the safety distance is estimated to be more than 10 meters, the control terminal is connected to the cloud platform through the mobile/Unicom 2G, 3G, 4G and telecommunication 4G networks, and sends a detection instruction to the cloud platform and receives a detection result. The wireless data communication module (such as SR-G402 tf) of the raman spectrometer can be connected to the cloud platform through mobile/internet 2G, 3G, 4G and telecom 4G networks, receive instructions from the platform, or send measured spectral data and measurement results to the cloud platform.
And the control terminal continuously performs difference on the front and rear frames of images shot by the camera. Since the sample is static, if there is no abnormal phenomenon such as burning luminescence or generation of smoke due to ablation caused by excessive laser power, the difference between the two images is equal to zero. If appear ablating and lead to the burning to give off light or produce unusual phenomena such as dense cigarette, the difference of two frame images can be showing not be equal to zero, and the laser instrument on the spectrum appearance body is closed immediately to the control unit this moment, opens reputation suggestion simultaneously and reminds the staff to detect and appear dangerously. From this, realize the damage that the unexpected staff that causes of blasting has been prevented to the video monitoring and remote control in real time of the sample that awaits measuring, improved the security by a wide margin.
The above description is only an example of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the present invention. The protection scope of the present invention is subject to the protection scope of the claims.
Claims (5)
1. A hand-held Raman spectrometer comprises a spectrometer body (1), a camera light path turning accessory (2) and a control terminal (3); a nose cone (11) and a camera (12) are arranged on the front end face of the spectrometer body (1); the camera light path turning accessory (2) is arranged on the spectrometer body (1) and is used for turning the visual angle direction of the camera (12) to the position of the nose cone (11); a signal transmission unit is arranged in the spectrometer body (1) and used for carrying out signal interaction between the spectrometer body (1) and the control terminal (3);
the control terminal (3) comprises an image reading unit, an image comparison unit, a control unit and an acousto-optic prompt unit; the image reading unit is used for reading an image signal output by the spectrometer body (1) at the speed of 10 frames per second; the image comparison unit is used for comparing each frame of image signal two by two in sequence and respectively calculating the comparison difference value of the two; the control unit is used for reading the comparison difference output by the image comparison unit, outputting a stop working signal when the comparison difference is not equal to zero, and controlling the spectrometer body (1) to stop working; and the acousto-optic prompt unit is used for generating an acousto-optic prompt signal when the control unit outputs a stop working signal.
2. The hand-held raman spectrometer of claim 1, wherein: the camera light path turning accessory (2) comprises a clamp (21), a reflector (22) and a cylindrical shaft body (23); the clamp (21) is fastened on the spectrometer body (1) through a screw; a first sleeve (211) and a second sleeve (212) are arranged on one side of the clamp (21); a third sleeve (221) and a fourth sleeve (222) are arranged on the reflector (22); the cylindrical shaft body (23) sequentially penetrates through the first sleeve (211), the third sleeve (221), the fourth sleeve (222) and the second sleeve (212).
3. The hand-held raman spectrometer of claim 2, wherein: the signal transmission unit comprises a Bluetooth module.
4. The hand-held raman spectrometer of claim 2, wherein: the signal transmission unit comprises a full-network wireless communication module.
5. The hand-held raman spectrometer of claim 3 or 4, wherein: the control terminal (3) adopts any one of a mobile phone, a PAD and a PC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710277144.5A CN108732154B (en) | 2017-04-25 | 2017-04-25 | Hand-held Raman spectrometer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710277144.5A CN108732154B (en) | 2017-04-25 | 2017-04-25 | Hand-held Raman spectrometer |
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| CN108732154A CN108732154A (en) | 2018-11-02 |
| CN108732154B true CN108732154B (en) | 2023-01-10 |
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| CN201710277144.5A Active CN108732154B (en) | 2017-04-25 | 2017-04-25 | Hand-held Raman spectrometer |
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| CN110793957A (en) * | 2019-11-27 | 2020-02-14 | 拱北海关技术中心 | Distributed customs field inspection Raman spectrum system based on cloud platform technology |
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| CN202661171U (en) * | 2012-06-21 | 2013-01-09 | 必达泰克光电设备(上海)有限公司 | Handheld raman spectrometer |
| US9400271B2 (en) * | 2013-12-18 | 2016-07-26 | Thermo Scientific Portable Analytical Instruments Inc. | Method and apparatus for temperature control during sample analysis |
| CN104048915A (en) * | 2014-06-27 | 2014-09-17 | 无锡利弗莫尔仪器有限公司 | Real-time monitoring device and method of optical material and laser interaction process |
| CN205384223U (en) * | 2015-09-25 | 2016-07-13 | 董跃清 | Intelligence hand -held type raman spectrometer |
| CN206540831U (en) * | 2017-03-09 | 2017-10-03 | 上海星必光电科技有限公司 | handheld Raman spectrum detecting device |
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Effective date of registration: 20231019 Address after: No. 516 Military Industrial Road, Yangpu District, Shanghai 200082 Patentee after: Guo Hanming Address before: Room B68, Building 031, No. 1076, Jungong Road, Yangpu District, Shanghai 200093 Patentee before: SHANGHAI XINGBI PHOTOELECTRIC TECHNOLOGY CO.,LTD. |
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