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The field of the present invention generally relates to nondestructive analysis of material samples and, more particularly, to such analysis of material samples using portable high performance near-infrared spectrometers.
Near Infrared (NIR) spectroscopy is commonly used in various industries for rapid and nondestructive quantitative or qualitative analysis. A wide variety of materials can be analyzed with NIR, in general anything organic in nature (containing carbon, hydrogen, oxygen, nitrogen bonding combinations) such as, for example but not limited to, agricultural products (e.g. grains, seeds, fruits etc.), foods and food ingredients, oils, fuels, and many other specialty chemicals. NIR spectroscopy is also used for-process reaction monitoring or testing finished products for quality control/quality assurance.
There are portable and/or handheld NIR spectroscopy devices in existence but they have a small sampling window (limited sampling surface area), low detection sensitivity, and limited spectral range and resolution. Although many of these portable devices are low cost, applications and accuracy of these instruments are limited.
High performance Fourier Transform Near Infrared (FT-NIR) spectroscopy devices typically require a relatively long optic path accommodated with large and heavy instrumentation which is placed on a benchtop in a controlled lab environment. These higher quality benchtop FT-NIR instruments can achieve a high level of performance due to high sensitivity, increased spectral resolution and ability to collect a spectrum covering the full NIR spectral range. Therefore, such instruments can be applied to a wider variety of applications with much better accuracy than the available handheld NIR devices. Accordingly, there is a need for improved portable NIR analyzer systems, methods and devices.
Disclosed are systems, methods and devices for on-site rapid, direct, and nondestructive analysis of material samples using portable high performance NIR spectrometers that overcome at least one of the disadvantages of the prior art described above. Disclosed is a portable data collection device comprising, in combination, a portable Fourier-Transform Near-Infrared (FT-NIR) spectrometer operable with a direct current (DC) power input, a hand-held probe having a large sampling area and operably connected to the portable FT-NIR spectrometer, a portable computer operable with a DC power input and configured for operation of the FT-NIR spectrometer, a portable electric power source operably connected to the portable FT-NIR spectrometer and the portable computer for providing a DC power output to the portable FT-NIR spectrometer and the portable computer, and a carrier. The carrier contains the portable FT-NIR spectrometer, the portable computer, and the portable electric power source. An on-site mobile device is preferably used to wirelessly control and display the portable computer located within the carrier.
Also disclosed is a system for on-site nondestructive analysis of a material sample, the system comprising, in combination, a remote-site computer and a remote-site database in communication with the remote-site computer, an on-site portable data collection device, and an on-site mobile device. The on-site portable data collection device comprises a portable Fourier-Transform Near-Infrared (FT-NIR) spectrometer operable with a DC power input. a hand-held probe having a large sampling area and operably connected to the portable FT-NIR spectrometer, a portable computer operable with a DC power input and configured for operation of the FT-NIR spectrometer and operably configured to send data to and receive data from the remote-site computer, a portable electric power source operably connected to the portable FT-NIR spectrometer and the portable computer for providing a DC power output to the portable FT-NIR spectrometer and the portable computer, and a carrier for the portable FT-NIR spectrometer, the portable computer, and the portable electric power source. The on-site mobile device is configured to send data to and receive data from the remote-site computer to control and display the portable computer. The remote site computer is operably configured to send data to and receive data from the on-site mobile device and the portable computer which is controlled by the on-site mobile device.
Also disclosed is a method for on-site nondestructive analysis of a material sample, the method comprising the step of, in combination, obtaining an on-site portable data collection device comprising a portable Fourier-Transform Near-Infrared (FT-NIR) spectrometer operable with a DC power input, a hand-held probe having a large sampling area and operably connected to the portable FT-NIR spectrometer, a portable computer operable with a DC power input and configured for operation of the FT-NIR spectrometer and operably configured to send data to and receive data from a remote-site computer, a portable electric power source operably connected to the portable FT-NIR spectrometer and the portable computer for providing a DC power output to the portable FT-NIR spectrometer and the portable computer; and a carrier for the portable FT-NIR spectrometer, the portable computer, and the portable electric power source. The method further includes the steps of obtaining an on-site mobile device configured to send data to and receive data from the remote-site computer and to control and display the portable computer, directing the hand-held probe at the material sample, activating the portable FT-NIR spectrometer to obtain a spectra from the material sample, wirelessly sending the spectra from the portable computer to the remote-site computer, analyzing the spectra at the remote site to obtain desired trait results for the material sample, and sending the desired trait results from the remote-site computer to the portable computer and displaying the trait results on a screen of the mobile device. The method preferably includes storing the spectra and the trait results at the remote site.
From the foregoing disclosure and the following more detailed description of various preferred embodiments it will be apparent to those skilled in the art that the present invention provides a significant advance in the technology and art of systems, methods and devices for on-site rapid, direct, and nondestructive analysis of materials using portable high performance NIR analyzers. Particularly significant in this regard is the potential the invention affords for providing a portable high performance NIR analyzer that provides on-site rapid and accurate results. Additional features and advantages of various preferred embodiments will be better understood in view of the detailed description provided below.
These and further features of the present invention will be apparent with reference to the following description and drawings, wherein:
It should be understood that the appended drawings are not necessarily to scale, presenting a somewhat simplified representation of various preferred features illustrative of the basic principles of the invention. The specific design features of the system and its components as disclosed herein, including, for example, specific dimensions, orientations, locations, and shapes of the various components, will be determined in part by the particular intended application and use environment. Certain features of the illustrated embodiments have been enlarged or distorted relative to others to facilitate visualization and clear understanding. In particular, thin features may be thickened, for example, for clarity or illustration. All references to direction and position, unless otherwise indicated, refer to the orientation of the items illustrated in the drawings.
It will be apparent to those skilled in the art, that is, to those who have knowledge or experience in this area of technology, that many uses and design variations are possible for the systems, methods, and software disclosed herein for on-site rapid, direct, and nondestructive testing of materials. The following detailed discussion of various alternative and preferred embodiments will illustrate the general principles of the invention with regard to systems, methods, and devices disclosed herein for on-site rapid, direct, and nondestructive analysis of cannabis. Other embodiments of the present invention suitable for other applications will be apparent to those skilled in the art given the benefit of this disclosure.
Referring now to the drawings,
The illustrated system 10 includes at least one service provider server or computer 14 (best shown in
The illustrated service provider server/computer 14, the illustrated user mobile device 20, and the illustrated portable data collection device 22 are in electronic communication with one another via a communication system or network 24. The illustrated communication system 24 is a computer network such as the Internet but any other suitable communication system can alternatively be utilized such as, for example, an intranet, any other type network of computers, and the like.
As best shown in
The illustrated service provider server/computer 14 is located at the service provider remote site 86, that is remote from the analysis or test location 18, and can be accessed by the user or analyst via the communication system 24. It is noted that while the illustrated system 10 shows a single user or analyst, it should be appreciated that the service provider server/computer 14 provides such services to a plurality of different users or analysts. It is further noted that the service provider server/computer 14 is not necessarily physically located at physical facilities of the service provider. In many instances the system is cloud based.
The illustrated remote-site service provider server/computer 14 and its associated database(s) 48 to 52 are provided with suitable software and data to perform a Chemometric based analysis. The Chemometric based analysis applies algorithms for a specific material type to the infrared spectra data for a sample 11 of that material type received from the spectrometer 12 in order to obtain trait data for the material sample 11 based on the spectra data obtained by the spectrometer 12 as discussed in more detail hereinbelow. For descriptions of suitable Chemometric based analysis performed by remote platforms, see U.S. Pat. Nos. 6,751,576, 6,872,946, 7,194,369, and 8,010,309, the disclosures of which are expressly incorporated herein in their entireties by reference.
As best shown in
The illustrated user mobile device 20 is typically physically located with the user or analyst, that is physically located on-site testing location 18 with the materials to be analyzed, but it is appreciated that other than during the analysis (and time immediately surrounding the analysis), the user mobile device 20 will likely be in other locations because the user mobile device 20 is mobile. It is noted that that while the illustrated system 10 shows a single user or analyst having a single mobile device 20, it should be appreciated that there is typically more than one user or analyst having one or more mobile devices 20. The illustrated user mobile device 20 is also in electronic communication with the portable data collection device 22 at the on-site analysis or testing location 18 via the remote-site server/computer 14 as described in more detail below. Preferably, the mobile device 20 is in electronic communication with the communication system 24 via a wireless cellular system or the like and the portable data collection device 22 is in electronic communication with the communication system 24 via a local wireless protocol such as Wi-Fi. The Wi-Fi can be a company Wi-Fi, a separate hot-spot or mobile phone hot-spot etc. Alternatively they can be in communication via any other suitable wireless or wired means.
As best shown in
The illustrated high performance FT-NIR spectroscopy device or analyzer 12 of the portable data collection device 22 is small and light weight enough to be used as a portable spectrometer or analyzer. Benchtop spectrometers are not suitable to be a portable spectrometers or analyzers due to their size and weight. The illustrated high performance FT-NIR spectrometer is a fiber optic type spectrometer so that it can be suitably coupled with a fiber optic sampling device composed of fiber optic cables and a fiber optic probe as described in more detail herein below. The illustrated portable high performance FT-NIR spectrometer 12 also operates with an input of 12V DC power but alternatively can operate on any other suitable DC voltage. The illustrated portable high performance FT-NIR spectrometer 12 and the probe 72 have the ability to collect a spectrum covering the full near infrared spectral range. It is noted that the portable high performance FT-NIR spectrometer 12 can alternatively have any other suitable configuration.
As best shown in
As best shown in
The illustrated portable electric power source 76 of the portable data collection device 22 is a commercial electric power bank with a 12V DC power output but alternatively can output any other suitable DC voltage. The illustrated portable electric power source 76 includes one or more rechargeable batteries such as, for example but not limited to, rechargeable lithium batteries. The portable electric power source 76 preferably provides suitable electric power for operating the portable computer 74 and the portable high performance FT-NIR spectroscopy device 12 for at least 8 hours. It is noted that the portable electric power source 76 can alternatively have any other suitable configuration.
The illustrated system software or web platform resides at the service provider server/computer 14 and is accessible to the user or analyst via the applications on the portable computer 74 of the on-site portable data collection device 22 and on the mobile device 20 of the onsite user or analyst.
A method for analyzing a dried cannabis sample or a fresh cannabis plant utilizing the above described system will now be described. First, an on-site user or analyst with the mobile device 20 and the portable data collection device 22 identifies a dried cannabis sample or a sample fresh cannabis plant for analysis. Next the user or analyst starts the application on their mobile device 20.
Once the user or analyst clicks on the login button 110 on the login page 106, a startup page or screen 112 is displayed on the display screen 70 of the on-site mobile device 20 of the user or analyst.
Once the startup process is complete, a material selection page or screen 116 is displayed on the display screen 70 of the on-site mobile device 20 of the user or analyst.
Once the selections of the material selection page 116 are complete, a sample identification page or screen 120 is displayed on the display screen 7 of the on-site mobile device 20 of the user or analyst.
Once the input of information on the sample identification page 120 is complete, a traits identification page or screen 124 is displayed on the display screen 70 of the on-site mobile device 20 of the user or analyst.
Once the user or analyst clicks on the analyze button 128, the user or analyst grasps the hand-held probe 72 of the on-site data collection device 22 and directs the sampling window 82 of the hand-held probe 72 directly at the material of the sample to be analyzed (best shown in
Once the user or analyst pulls the trigger 86 of the hand-held probe 72, an analyzing sample page or screen 132 is displayed on the display screen 70 of the on-site mobile device 20 of the user or analyst and the portable FT-NIR spectrometer 12 begins scanning the sample. Near Infrared light emerges from the sampling window 82 of the hand-held probe 72 and penetrates the sample to be analyzed. Light reflected back from the sample enters the sampling window 82 of the hand-held probe 72 and is sent to NIR detectors of the portable FT-NIR spectrometer 12. A near infrared spectrum or spectra is created and sent to the remote-site server/computer 14 via the portable computer 74 connected to the FT-NIR spectrometer 12.
Once the spectra is created and sent to the remote server/computer 14, a calculating results page or screen 134 is displayed on the display screen 72 of the on-site mobile device 20 of the user or analyst. Also, the remote-site server/computer 14 automatically applies appropriate chemometric algorithms for analyzing the material to the near infrared spectrum for the sample of material received from the portable computer 74 to generate results for the selected traits, and sends the results back the portable computer 74 and displayed on the on-site mobile device 20.
Once calculation of results is complete, assuming the near infrared spectra was good, a results page or screen 140 is displayed on the display screen 70 of the on-site mobile device 20 of the user or analyst.
Using cannabis analysis as an example, our experience when analyzing cannabis and hemp placed in a cup on commercially-available benchtop NIR spectrometers has been that for fresh material harvested without drying, the accuracy of the analysis is considerably weaker than for material that has been dried. Analyzing the same parameters when the plant material is dried and ground has been much more successful. This is expected for NIR since the presence of water greatly weakens the signal due to the high absorbance of water. However, it is often advantageous to take a measurement on plant material while it is still growing and unharvested. The present invention now makes that possible. Our strategy for measuring whole, unground plant material is to take at least 3 measurements of the material (i.e., for a bud or cone, three different parts of the surface), then to average the results. This has allowed for accuracy of our new portable technologies to be comparable to our current benchtop technologies. For example, the measurement accuracy of Delta-9-Tetrahydrocannabinol (THC), which is one of the key cannabinoids for hemp and cannabis, is 0.03% for fresh material measured with the new portable technology. This kind of accuracy is impossible for the existing handheld NIR devices (with the THC accuracy lager than 1%) to achieve. This is the also same accuracy as for our current NIR benchtop technologies for dried cannabis and dried hemp, which is also 0.03%. Now, cannabis can be measured in a greenhouse or field, as it grows, without destroying the crop by harvesting and drying the sample. The THC and other important cannabinoids can be monitored conveniently, and the accuracy achieved with our multi-point measurement and averaging strategy. Since the portable scanning and cloud-based analysis can take as little as 1 minute, several data points can be taken on the same sample to achieve the same performance as a large benchtop instrument which requires a table and an extracted portion of sample which must fill a cup.
Any of the features or attributes of the above described embodiments and variations can be used in combination with any of the other features and attributes of the above described embodiments and variations as desired.
It is apparent from the forgoing disclosure and detailed description that the system of the present invention is effective to provide improved nondestructive analysis of materials on-site. In particular, (1) a wider range of applications and higher accuracy/performance and spectral quality is obtained than with current portable NIR analyzers; (2) the probe has a larger sampling area for obtaining a more representative spectral signature than is obtained from current probes; (3) the cloud based analysis methods allow the NIR analyzer to have methods developed and maintained by expert chemometricians remotely; and (4) a “lab quality” high performance spectrometer is provided which is user-friendly and can be operated without specialized training.
From the foregoing disclosure and detailed description of certain preferred embodiments, it is also apparent that various modifications, additions and other alternative embodiments are possible without departing from the true scope and spirit of the present invention. The embodiments discussed were chosen and described to provide the best illustration of the principles of the present invention and its practical application to thereby enable one of ordinary skill in the art to utilize the invention in various embodiments and with various modifications as are suited to the particular use contemplated. All such modifications and variations are within the scope of the present invention as determined by the appended claims when interpreted in accordance with the benefit to which they are fairly, legally, and equitably entitled.