CN112088295B

CN112088295B - Pressure measurement system and method

Info

Publication number: CN112088295B
Application number: CN202080001240.7A
Authority: CN
Inventors: 胡舒贺; 李海燕; 刘然; 姚栋; 崔田
Original assignee: Jilin University
Current assignee: Jilin University
Priority date: 2020-07-13
Filing date: 2020-07-13
Publication date: 2022-02-15
Anticipated expiration: 2040-07-13
Also published as: CN112088295A; WO2022011508A1

Abstract

The present application provides a pressure measurement system. The system may include a sensing assembly, a light source, a fluorescence processing assembly, and a pressure measurement assembly. The sensing assembly may be configured to receive a pressure to be measured. The sensing component may include a fluorescent material comprising a 6-acyl-2-naphthylamine derivative. The light source may be configured to emit laser light to the sensing assembly. The fluorescence processing assembly may be configured to determine fluorescence data associated with fluorescence generated by the sensing assembly in response to the laser light. The pressure measurement assembly may be configured to determine pressure data related to the pressure to be measured based on the fluorescence data.

Description

Pressure measurement system and method

Technical Field

The present application relates generally to pressure measurement, and more particularly to a pressure measurement system and method based on fluorescent materials containing 6-acyl-2-naphthylamine derivatives.

Background

With the development of scientific research and industrial technology, the pressure measurement technology plays an important role in the fields of aerospace, automobile industry, display imaging, material maintenance and the like. At present, the pressure measurement technology based on fluorescent materials is a hot research field. Therefore, it is important to find a fluorescent material with high sensitivity and a relatively wide pressure response range, and to design a pressure measurement system and method based on the fluorescent material.

Disclosure of Invention

In one aspect of the present application, a pressure measurement system is provided. The system may include a sensing assembly, a light source, a fluorescence processing assembly, and a pressure measurement assembly. The sensing assembly may be configured to receive a pressure to be measured. The sensing component may include a fluorescent material comprising a 6-acyl-2-naphthylamine derivative. The light source may be configured to emit laser light to the sensing assembly. The fluorescence processing assembly may be configured to determine fluorescence data associated with fluorescence generated by the sensing assembly in response to the laser light. A pressure measurement component can be configured to determine pressure data related to the pressure to be measured based on the fluorescence data.

In some embodiments, the pressure data associated with the pressure to be measured may include a value of the pressure and/or a range of values of the pressure.

In some embodiments, the fluorescence data may include at least one of a fluorescence spectrum of the fluorescence, a peak wavelength of the fluorescence spectrum, and/or a color of the fluorescence.

In some embodiments, the pressure data associated with the pressure to be measured is determined based on the fluorescence data, and the pressure measurement component may be configured to determine the pressure data based on a color of the fluorescence.

In some embodiments, the pressure data associated with the pressure to be measured is determined based on the fluorescence data, and the pressure measurement component may be configured to determine the pressure data based on a peak wavelength according to a relationship between pressure data and peak wavelength.

In some embodiments, the relationship between pressure data and peak wavelength is determined by the following process: applying at least two reference pressures to the reference sensing assembly; for each of the at least two reference pressures, emitting laser light by a reference light source to the reference sensing assembly; determining reference fluorescence data for reference fluorescence generated by the reference sensing assembly in response to the laser light; and determining the relationship between pressure data and peak wavelength based on the reference fluorescence data and the at least two reference pressures. At least a portion of the reference sensing assembly may be identical to the sensing assembly. The reference fluorescence data may correspond to the reference pressure. The reference fluorescence data may include a reference peak wavelength of a reference fluorescence spectrum at the reference pressure.

In some embodiments, the at least two reference pressures may be determined based on a calibration object.

In some embodiments, at least two reference pressures are applied to the reference sensing assembly by a pressurizing device.

In some embodiments, the at least two reference pressures may range from 0GPa to 30 GPa.

In some embodiments, the relationship between pressure data and peak wavelength may be a linear relationship.

In some embodiments, the sensitivity range of the fluorescent material may be 7(nm x GPa)^-1) To 8

(nm×GPa^-1)。

In some embodiments, the 6-acyl-2-naphthylamine derivative may include 6-lauroyl-N, N-dimethyl-2-naphthylamine (laurdan), 6-lauroyl-N-methyl-2-naphthylamine (M-laurdan), 6-lauroyl-N-methyl-N-methoxycarbonyl-2-naphthylamine (MoC-laurdan), 6-lauroyl-N-methyl-N-carboxy-2-naphthylamine (C-laurdan), 6-formyl-N, N-dimethyl-2-naphthylamine, 6-acetyl-N, N-dimethyl-2-naphthylamine or 6-propionyl-N, at least one of N-dimethyl-2-naphthylamine.

In another aspect of the present application, a pressure measurement method is provided. The method may include causing the sensor assembly to receive a pressure to be measured. The sensing component may include a fluorescent material comprising a 6-acyl-2-naphthylamine derivative. The method may also include causing a light source to emit laser light toward the sensing assembly; obtaining fluorescence data from a fluorescence processing assembly relating to fluorescence generated by the sensing assembly in response to the laser light; determining pressure data associated with the pressure to be measured based on the fluorescence data.

In some embodiments, determining the pressure data associated with the pressure to be measured based on fluorescence data may include determining the pressure data based on the color of the fluorescence.

In some embodiments, determining the pressure data associated with the pressure to be measured based on the fluorescence data may include determining the pressure data based on a peak wavelength according to a relationship between pressure data and peak wavelength.

In some embodiments, the relationship between pressure data and peak wavelength is determined by the following process: applying at least two reference pressures to the reference sensing assembly; for each of at least two reference pressures, emitting laser light by a reference light source to the reference sensing assembly; determining reference fluorescence data for reference fluorescence generated by the reference sensing assembly in response to the laser light; and determining the relationship between pressure data and peak wavelength based on the reference fluorescence data and the at least two reference pressures. Wherein at least a portion of the reference sensing assembly may be identical to the sensing assembly. The reference fluorescence data may correspond to the reference pressure. The reference fluorescence data may include a reference peak wavelength of a reference fluorescence spectrum at the reference pressure.

In some embodiments, the sensitivity range of the fluorescent material may be 7(nm x GPa)^-1) To 8(nm x GPa)^-1)。

Another aspect of the present application may provide a pressure measurement method. The method may include receiving, by a sensing assembly, a pressure to be measured; emitting laser light from a light source to the sensing assembly; determining, by a fluorescence processing component, fluorescence data associated with fluorescence generated by the sensing component in response to the laser light; and determining, by a pressure measurement component, pressure data related to the pressure to be measured based on the fluorescence data. Wherein the sensing component may include a fluorescent material containing a 6-acyl-2-naphthylamine derivative.

Additional features of the present application will be set forth in part in the description which follows. Additional features of some aspects of the present application will be apparent to those of ordinary skill in the art in view of the following description and accompanying drawings, or in view of the production or operation of the embodiments. The features of the present application may be realized and attained by practice or use of the methods, instrumentalities and combinations of aspects of the specific embodiments described below.

Drawings

The present application will be further described by way of exemplary embodiments. These exemplary embodiments will be described in detail by means of the accompanying drawings. The figures are not drawn to scale. These embodiments are non-limiting exemplary embodiments in which like reference numerals represent similar structures throughout the several views of the drawings, and wherein:

FIG. 1 is a schematic view of an exemplary pressure measurement system shown in accordance with some embodiments of the present application;

FIG. 2 is a schematic diagram of exemplary hardware and/or software components of an exemplary computing device shown in accordance with some embodiments of the present application;

FIG. 3 is a block diagram of an exemplary pressure measurement assembly shown in accordance with some embodiments of the present application;

FIG. 4 is a flow chart of an exemplary pressure measurement shown in accordance with some embodiments of the present application;

FIG. 5 is a flow chart illustrating an exemplary determination of a relationship between pressure data and peak wavelength according to some embodiments of the present application;

FIG. 6 is an exemplary chemical formula of a fluorescent material according to some embodiments of the present application;

FIG. 7 is a schematic illustration of an exemplary reference fluorescence spectrum of a reference sensing assembly at least two reference pressures, according to some embodiments of the present application;

FIG. 8 is a schematic illustration of an exemplary absorption spectrum of a reference sensing assembly at least two reference pressures, according to some embodiments of the present application; and

FIG. 9 is a schematic illustration of an exemplary relationship between pressure data and peak wavelength shown in accordance with some embodiments of the present application.

Detailed Description

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below. However, it will be apparent to one skilled in the art that the present application may be practiced without these specific details. In other instances, well known methods, procedures, systems, components, and/or circuits have been described at a high-level in order to avoid unnecessarily obscuring aspects of the present application. It will be apparent to those of ordinary skill in the art that various changes can be made to the disclosed embodiments and that the general principles defined in this application can be applied to other embodiments and applications without departing from the principles and scope of the application. Thus, the present application is not limited to the embodiments shown, but is to be accorded the widest scope consistent with the claims.

The terminology used in the description presented herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

It will be understood that the terms "system," "unit," "module," and/or "block" as used herein are methods for distinguishing different components, elements, parts, portions, or components of different levels in ascending order. However, these terms may be replaced by other expressions if the same object can be achieved.

The modules (or units, blocks) described in this application may be implemented as software and/or hardware modules and may be stored in any type of non-transitory computer-readable medium or other storage device. In some embodiments, software modules may be compiled and linked into an executable program. It will be appreciated that software modules may be invoked from other modules or from themselves, and/or may be invoked in response to detected events or interrupts. A software module configured for execution on a computing device may be provided on a computer-readable medium (e.g., a compact disc, digital video disc, flash drive, magnetic disk, or any other tangible medium) or may be stored as a digitally downloaded file (and may be in an initially compressed or installable format requiring installation, decompression, or decryption prior to execution). Such software code may be stored in part or in whole in a memory device executing the computing device and executed by the computing device. The software instructions may be embedded in firmware, such as an erasable programmable read-only memory. It will be further understood that hardware modules (e.g., circuits) may be included in connected or coupled logic units (e.g., gates and flip-flops) and/or may be included in programmable units (e.g., programmable gate arrays or processors). The modules or computing device functions described herein are preferably implemented as hardware modules, but may also be implemented as software modules. Generally, the modules described herein refer to logical modules that, although physically organized or stored, may be combined with other modules or divided into units.

It will be understood that when an element, engine, module or block is referred to as being "on," "connected to" or "coupled to" another element, engine, module or block, it can be directly on, connected or coupled to or in communication with the other element, engine, module or block, or intervening elements, engines, modules or blocks may be present, unless the context clearly dictates otherwise. In this application, the term "and/or" may include any one or more of the associated listed items or combinations thereof.

These and other features, aspects, and advantages of the present application, as well as the methods of operation and functions of the related elements of structure and the combination of parts and economies of manufacture, will become more apparent from the following description of the drawings, all of which form a part of this specification. It is to be understood, however, that the drawings are designed solely for the purposes of illustration and description and are not intended as a definition of the limits of the application.

The flow charts used herein illustrate operations performed by the systems shown in accordance with some embodiments disclosed herein. It should be understood that the operations in the flow diagrams may be performed out of order. Rather, these operations may be performed in reverse order or simultaneously. In addition, one or more other operations may be added to the flow diagrams. One or more operations may be deleted from the flowchart.

One aspect of the present application relates to pressure measurement systems and methods. The system may measure pressure based on a fluorescent response of the fluorescent material to the laser light under pressure. The system may include a sensing component, a light source, a fluorescence processing component, and a pressure measurement component. The sensing assembly may be configured to receive a pressure to be measured. The sensing component may include a fluorescent material comprising a 6-acyl-2-naphthylamine derivative. The light source may be configured to emit laser light to the sensing assembly. The fluorescence processing assembly may be configured to determine fluorescence data associated with fluorescence generated by the sensing assembly in response to the laser light at the pressure to be measured. For example, the fluorescence data may include a peak wavelength of a fluorescence spectrum of the fluorescence, a color of the fluorescence, and the like. The pressure measurement assembly may be configured to determine pressure data (e.g., a value or range of values of the pressure to be measured) related to the pressure to be measured based on the fluorescence data. For example, the pressure measurement component may determine the pressure data from a relationship (e.g., a linear relationship) between the pressure data and the peak wavelength.

According to the system and method of the present application, a fluorescent material containing a 6-acyl-2-naphthylamine derivative is used in pressure measurement, which has higher pressure measurement sensitivity (for example, 7(nm × GPa)^-1) To 8(nm x GPa)^-1) And larger pressure measurement ranges (e.g., 0 to 30 Gpa). For example, the fluorescent material may comprise laurdan having a pressure measurement sensitivity of 7.742nm x GPa^-1The pressure response ranges from 0GPa to 22.79 GPa.

FIG. 1 is a schematic view of an exemplary pressure measurement system shown in accordance with some embodiments of the present application. In some embodiments, pressure measurement system 100 may be applied in a variety of scenarios, such as aerospace, automotive industry, display imaging, material maintenance, and the like. In some embodiments, pressure measurement system 100 may include a sensing component 110, a light source 120, a fluorescence processing component 130, a pressure measurement component 140, and a storage device 150.

The sensing component 110 may be configured to receive the pressure to be measured and/or to receive laser light emitted by the light source 120. The pressure to be measured may include the pressure exerted on the sensing assembly 110. Wherein pressure may refer to the force exerted on the sensing assembly 110 or the force per unit area (i.e., pressure).

In some embodiments, the sensing component 110 includes a fluorescent material that can produce fluorescent light (also referred to as a "fluorescent response") in response to receiving laser light from the light source 120. In some embodiments, the fluorescent material may include a 6-acyl-2-naphthylamine derivative, for example, chemical formula (1) shown in fig. 6, wherein R is₁、R₂And R₃May represent an arbitrary substituent. In some embodiments, R₁Alkyl groups such as methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl, octyl, nonyl, decyl, undecyl, dodecyl and the like may be included. For example, the butyl group may comprise n-butylButyl, sec-butyl, isobutyl, tert-butyl, and the like. As another example, the pentyl group may include an n-pentyl group, a t-pentyl group, a neopentyl group, an isopentyl group, a sec-pentyl group, a 3-pentyl group, a sec-isopentyl group, an active pentyl group, and the like. R₂Or R₃May include alkyl groups, hydroxyl groups, carbonyl groups, aldehyde groups, haloformyl groups, carbonate groups, carboxyl groups, ester groups, methoxy groups, hydroperoxy groups, peroxy groups, ether groups, and the like, or any combination thereof.

By way of example only, the 6-acyl-2-naphthylamine derivative may include 6-lauroyl-N, N-dimethyl-2-naphthylamine (i.e., laurdan, shown in chemical formula (3) of fig. 6)), 6-lauroyl-N-methyl-2-naphthylamine (i.e., M-laurdan, shown in chemical formula (4) of fig. 6)), 6-lauroyl-N-methyl-N-methoxycarbonyl-2-naphthylamine (i.e., MoC-laurdan, shown in chemical formula (5) of fig. 6)), 6-lauroyl-N-methyl-N-carboxy-2-naphthylamine (i.e., C-laurdan, shown in chemical formula (6) of fig. 6)), 6-formyl-N, n-dimethyl-2-naphthylamine, 6-acetyl-N, N-dimethyl-2-naphthylamine (for example, shown in chemical formula (2) shown in FIG. 6), 6-propionyl-N, N-dimethyl-2-naphthylamine, 6-butyryl-N, N-dimethyl-2-naphthylamine, 6-pentanoyl-N, N-dimethyl-2-naphthylamine, 6-hexanoyl-N, N-dimethyl-2-naphthylamine, 6-heptanoyl-N, N-dimethyl-2-naphthylamine, 6-octanoyl-N, N-dimethyl-2-naphthylamine, 6-nonanoyl-N, N-dimethyl-2-naphthylamine, and the like, 6-decanoyl-N, N-dimethyl-2-naphthylamine, 6-undecanyl-N, N-dimethyl-2-naphthylamine, 6-lauroyl-N, N-dimethyl-2-naphthylamine and the like.

In some embodiments, the phosphor material also includes one or more substances (which have relatively good transmission (e.g., greater than 90%) for laser light) mixed with the 6-acyl-2-naphthylamine derivative. Exemplary substances may include polymers, metallic substances, ceramic substances, semiconductor substances, and the like, or any combination thereof. Polymers include polyethylene, polypropylene, polystyrene, polyvinyl chloride, synthetic rubber, phenolic resins, epoxy resins, neoprene, nylon, polyacrylonitrile, and the like. The metal substance includes silver, copper, gold, iron, tin, tantalum, platinum, palladium, zinc, cobalt, and the like. The ceramic substance includes barium titanate, boron oxide, magnesium diboride, silicon carbide, zinc oxide, zirconium dioxide, uranium oxide, titanium carbide, and the like. Semiconductor substances include silicon, germanium, gray tin, silicon carbide, boron nitride, aluminum nitride, gallium phosphide, indium arsenide, cadmium sulfide, zinc oxide, copper sulfide, and the like.

In some embodiments, the sensitivity of the fluorescent material (also referred to as "pressure sensitivity") satisfies a preset condition. The sensitivity of a fluorescent material may be indicative of the ease with which the material changes in fluorescence due to applied pressure. For example, for different fluorescent materials, the higher the sensitivity, the more pronounced the change in fluorescence produced by the fluorescent material (e.g., the peak wavelength of the fluorescence spectrum) at the same pressure. For example, the sensitivity range of the fluorescent material is 7(nm × GPa)^-1) To 8(nm x GPa)^-1). As another example, the sensitivity range of the fluorescent material is 7.1(nm × GPa)^-1) To 7.9(nm x GPa)^-1). As another example, the sensitivity range of the fluorescent material is 7.2(nm × GPa)^-1) To 7.8 (nm x GPa)^-1). As another example, the sensitivity range of the fluorescent material is 7.3(nm × GPa)^-1) To 7.7(nm x GPa)^-1). As another example, the sensitivity range of the fluorescent material is 7.4(nm × GPa)^-1) To 7.6(nm x GPa)^-1)。

In some embodiments, the pressure response range of the fluorescent material satisfies a preset condition. The pressure response range may refer to a pressure range that the fluorescent material can bear, and in the pressure range, the fluorescent material generates corresponding fluorescence. For example, the pressure response of the fluorescent material ranges from 0GPa to 30 GPa. By way of example only, the fluorescent material may comprise laurdan having a pressure measurement sensitivity of 7.742nm x GPa^-1The pressure response range is 0GPa to 22.79 GPa.

In some embodiments, the sensing component 110 includes a sensor. In some embodiments, the sensor includes a sensor matrix and at least two particles (e.g., quantum dots) comprising a fluorescent material. For example, the at least two particles are embedded in the sensor matrix in a homogeneous manner. In some embodiments, the at least two particles may be dispersed directly in the sensor matrix. In some embodiments, the at least two particles may be dispersed in a transparent component, which is then dispersed in the sensor matrix, thereby protecting the at least two particles from chemical degradation. In some embodiments, the sensor matrix may be made of a material (e.g., a polymer (e.g., epoxy)) that has good transmission (e.g., greater than 90%) of the laser light. In some embodiments, the shape of the sensor may include a prism, cube, cylinder, pyramid, cone, disk, sphere, or the like, or any combination thereof.

The light source 120 may be configured to emit laser light to the sensing component 110. In some embodiments, the light source 120 may include a laser diode, a Light Emitting Diode (LED), a filament, an arc lamp, a flash lamp, and the like. In some embodiments, one or more properties of the laser (e.g., pulse length, frequency, power, wavelength), such as one or more properties of the fluorescent material, power requirements, etc., may be selected according to actual needs. In some embodiments, the light source 120 can be any source capable of exciting a fluorescent response of the fluorescent material, such as an electron beam, a neutron beam, an ion beam, and the like.

Fluorescence processing component 130 is configured to determine fluorescence data associated with fluorescence generated by sensing component 110 in response to laser light emitted by light source 120. In some embodiments, the fluorescence data may include a fluorescence spectrum of the fluorescence, a peak wavelength of the fluorescence spectrum, a color of the fluorescence, or the like, or any combination thereof.

In some embodiments, fluorescence processing component 130 includes a gated photosensitive device (e.g., a photomultiplier tube, an avalanche photodiode, a silicon photodiode, an enhanced charge coupled device (ICCD)), a spectrometer (e.g., a broad-spectrum spectrometer), an optical bandpass detector, a digital microscope camera, a charge coupled detector, and the like.

Pressure measurement assembly 140 is configured to determine pressure data (e.g., a value of pressure, a range of values of pressure) associated with the pressure to be measured by sensing assembly 110 based on the fluorescence data. As described above, the fluorescence generated by the fluorescent material contained by the sensing element 110 is correlated to the pressure to be measured by the sensing element 110. For example, when pressure is applied to the sensing component 110, the sensing component 110 under pressure receives laser light emitted from the light source 120 to generate fluorescence (unlike the fluorescence generated by the sensing component 110 in the absence of pressure). Accordingly, pressure measurement component 140 may determine pressure data related to pressure based on the fluorescence data.

In some embodiments, the peak wavelength of the fluorescence generated by the fluorescent material varies with the pressure applied to the fluorescent material. Accordingly, based on the peak wavelength of the fluorescence, pressure measurement component 140 may determine pressure data from a relationship between the pressure data and the peak wavelength. In some embodiments, the relationship between the pressure data and the peak wavelength may be a linear relationship. In some embodiments, pressure measurement component 140 may obtain the relationship between pressure data and peak wavelength from storage device 150 or an external device (e.g., an external database). In some embodiments, the relationship between pressure data and peak wavelength may be predetermined from sample data (e.g., experimental data). For example, the relationship between the pressure data and the peak wavelength may be predetermined based on at least two reference pressures applied to the reference sensing assembly and reference fluorescence data corresponding thereto. In some embodiments, the relationship of the pressure data to the peak wavelength may be predetermined by the pressure measurement component 140 or a device separate from the pressure measurement component 140 (e.g., experimental device, research device). Further description of the relationship between pressure data and peak wavelength may be found elsewhere in this application (e.g., fig. 5, 7-9, and their corresponding descriptions).

In some embodiments, the color of the fluorescence generated by the fluorescent material changes as the pressure applied to the fluorescent material changes. Accordingly, pressure measurement component 140 may determine pressure data based on the color of the fluorescence. For example, if the color of the fluorescence is blue or deep blue, the pressure ranges from 1atm to 4.14 GPa. For another example, if the color of the fluorescence is green, the pressure range is 6.09GPa to 11.18 GPa. For another example, if the color of the fluorescence is yellow, the pressure range is 12.03GPa to 16.06 GPa. As another example, if the color of the fluorescence is orange-red, the pressure ranges from 18.38GPa to 22.79 GPa.

In some embodiments, different regions of the sensing assembly 110 can receive different pressures simultaneously. Accordingly, the light source 120 can emit laser light to these regions and the fluorescence processing component 130 can determine fluorescence data corresponding to the different regions. Further, the pressure measurement component 140 can determine pressure data corresponding to different regions. For example, the pressure measurement component 140 may determine individual pressure data corresponding to each of the different regions, average pressure data corresponding to the different regions, and so forth. In some embodiments, the sensing component 110 may receive different pressures at different points in time. Accordingly, pressure measurement component 140 may determine individual pressure data corresponding to each of the different points in time, average pressure data corresponding to the different points in time, and/or the like.

In some embodiments, the pressure measurement component 140 may be implemented by a single server or a group of servers. The server bank can be centralized or distributed (e.g., the pressure measurement component 140 is a distributed system). In some embodiments, pressure measurement component 140 may include one or more processing engines (e.g., a single core processing engine or a multi-core processor). By way of example only, the pressure measurement component 140 may include a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), an application specific instruction set processor (ASIP), an image processing unit (GPU), a physical arithmetic processing unit (PPU), a Digital Signal Processor (DSP), a Field Programmable Gate Array (FPGA), a Programmable Logic Device (PLD), a controller, a microcontroller unit, a Reduced Instruction Set Computer (RISC), a microprocessor, or the like, or any combination thereof. In some embodiments, the pressure measurement component 140 may be implemented on a cloud platform. By way of example only, the cloud platform may include a private cloud, a public cloud, a hybrid cloud, a community cloud, a distributed cloud, an internal cloud, a multi-tiered cloud, and the like, or any combination thereof. In some embodiments, the pressure measurement component 140 may be implemented on a computing device 200 shown in FIG. 2 herein that includes one or more components.

Storage device 150 may store data and/or instructions. In some embodiments, storage device 150 may store data obtained from sensing component 110, light source 120, fluorescence processing component 130, pressure measurement component 140, an external storage device, and the like. For example, the storage device 150 may store the relationship between pressure data and peak wavelength. As another example, the storage device 150 may store fluorescence data related to fluorescence generated by the sensing assembly 110 in response to laser light under pressure. In some embodiments, storage device 150 may store data and/or instructions that pressure measurement component 140 executes or uses to perform the example methods described herein. For example, storage device 150 may store instructions that are executed or used by pressure measurement component 140 to determine pressure data related to the pressure being measured based on the fluorescence data.

In some embodiments, storage device 150 may include mass storage, removable storage, volatile read-write memory, read-only memory (ROM), and the like, or any combination thereof. Exemplary mass storage devices may include magnetic disks, optical disks, solid state drives, and the like. Exemplary removable memories may include flash drives, floppy disks, optical disks, memory cards, compact disks, magnetic tape, and the like. Exemplary volatile read and write memories can include Random Access Memory (RAM). Exemplary RAM may include Dynamic Random Access Memory (DRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), Static Random Access Memory (SRAM), thyristor random access memory (T-RAM), and zero capacitance random access memory (Z-RAM), among others. Exemplary ROMs may include Mask ROM (MROM), Programmable ROM (PROM), Erasable Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), compact disk ROM (CD-ROM), digital versatile disk ROM, and the like. In some embodiments, the storage device 150 may be implemented on a cloud platform. By way of example only, the cloud platform may include a private cloud, a public cloud, a hybrid cloud, a community cloud, a distributed cloud, an internal cloud, a multi-tiered cloud, and the like, or any combination thereof.

In some embodiments, pressure measurement system 100 may also include a network (not shown). The network may facilitate information and/or data exchange. In certain embodiments, one or more components of pressure measurement system 100 (e.g., sensing component 110, light source 120, fluorescence processing component 130, pressure measurement component 140, storage device 150) may transmit information and/or data to other components of pressure measurement system 100 over a network. For example, the pressure measurement component 140 may obtain the relationship between the pressure data and the peak wavelength from the storage device 150 over a network. As another example, fluorescence processing component 130 may transmit fluorescence data to pressure measurement component 140 via a network. In some embodiments, the network may be any one of a wired network, a wireless network, or any combination thereof. By way of example only, the network may include a cable network, a wired network, a fiber optic network, a telecommunications network, an intranet, the internet, a Local Area Network (LAN), a Wide Area Network (WAN), a Wireless Local Area Network (WLAN), a Metropolitan Area Network (MAN), a Public Switched Telephone Network (PSTN), a bluetooth network, a zigbee network, a Near Field Communication (NFC) network, the like, or any combination thereof. In some embodiments, the network may include one or more network access points. For example, the network may include wired or wireless network access points through which one or more components of the pressure measurement system 100 may be connected to the network to exchange data and/or information.

In some embodiments, the pressure measurement component 140 may be local or remote. In some embodiments, pressure measurement component 140 may be connected to a network to communicate with one or more components of pressure measurement system 100 (e.g., sensing component 110, light source 120, fluorescence processing component 130, storage device 150). For example, pressure measurement component 140 may access information and/or data stored in sensing component 110, light source 120, fluorescence processing component 130, and/or storage device 150 via a network. As another example, the pressure measurement component 140 may send instructions to the light source 120 over a network to cause the light source 120 to emit laser light. In some embodiments, pressure measurement component 140 may be directly connected or in communication with one or more components of pressure measurement system 100 (e.g., sensing component 110, light source 120, fluorescence processing component 130, storage device 150). For example, pressure measurement component 140 may be directly connected to sensing component 110, light source 120, fluorescence processing component 130, and/or storage device 150 to access stored information and/or data.

In some embodiments, storage device 150 may be connected to a network to communicate with one or more components of pressure measurement system 100 (e.g., sensing component 110, light source 120, fluorescence processing component 130, pressure measurement component 140). The components in the measurement system 100 may access data or instructions stored in the storage device 150 over a network. In some embodiments, storage device 150 may be directly connected to or in communication with one or more components of pressure measurement system 100 (sensing component 110, light source 120, fluorescence processing component 130, pressure measurement component 140). In some embodiments, the storage device 150 may be part of the pressure measurement assembly 140. For example, the storage device 150 may be integrated into the pressure measurement assembly 140.

In some embodiments, pressure measurement system 100 may also include one or more terminal devices (not shown). The end devices may be configured to receive information and/or data from and/or transmit information and/or data to components of pressure measurement system 100 (e.g., sensing component 110, light source 120, fluorescence processing component 130, pressure measurement component 140, and/or storage device 150) over a network. For example, the terminal device can receive information (e.g., fluorescence data, pressure data) from the pressure measurement component 140 over a network. In some embodiments, the terminal device may provide a user interface through which a user may view information and/or input data and/or instructions to the pressure measurement system 100. For example, a user may view information (e.g., fluorescence data, pressure data) through a user interface. As another example, a user may enter an instruction through a user interface, and the terminal device then sends the instruction to the light source 120 or the pressure measurement component 140 through the network. The instructions may include instructions to emit a laser to the sensing assembly 110, set or modify parameters related to pressure measurements, and the like. In some embodiments, the terminal device may include a display that displays information in human-readable form, such as text, images, audio, video, graphics, animations and the like or any combination thereof. The display of the terminal device may include a Cathode Ray Tube (CRT) display, a Liquid Crystal Display (LCD), a Light Emitting Diode (LED) display, a Plasma Display Panel (PDP), a three-dimensional (3D) display, and the like, or a combination thereof. In some embodiments, the pressure measurement component 140 may be integrated into the terminal device.

In some embodiments, the terminal device may include a mobile device, a tablet, a laptop, etc., or any combination thereof. In some embodiments, the mobile device may include a smart home device, a wearable device, a smart mobile device, a virtual reality device, an augmented reality deviceAnd the like or any combination thereof. The intelligent household equipment can comprise intelligent lighting equipment, intelligent electric appliance control equipment, intelligent monitoring equipment, an intelligent television, an intelligent camera, an interphone and the like or any combination thereof. Wearable devices may include smart bracelets, smart footwear, smart glasses, smart helmets, smart watches, smart clothing, smart backpacks, smart accessories, and the like, or any combination thereof. The smart mobile device may include a smart phone, a Personal Digital Assistant (PDA), a gaming device, a navigation device, a point of sale (POS) device, the like, or any combination thereof. The virtual reality or augmented reality device may include a virtual reality helmet, virtual reality glasses, virtual reality eyeshields, augmented reality helmets, augmented reality glasses, augmented reality eyeshields, and the like, or any combination thereof. For example, the virtual reality device and/or the augmented reality device may include Google^TMGlass, Oculus Rift, Hololens, Gear VR, etc.

It should be noted that pressure measurement system 100 is provided for illustrative purposes only and is not intended to limit the scope of the present application. Various changes and modifications will occur to those skilled in the art based on the description herein. However, such changes and modifications do not depart from the scope of the present application.

For example, the components of pressure measurement system 100 may be interconnected in any suitable manner. For example, the light source 120 may be connected to the pressure measurement component 140 directly or through a network, the fluorescence processing component 130 may be connected to the pressure measurement component 140 directly or through a network, the storage device 150 may be connected to the pressure measurement component 140 directly or through a network, and so forth.

As another example, the sensing component 110 can be placed between a first medium (e.g., material, product) and a second medium (e.g., material, product) such that the pressure applied to the sensing component 110 is substantially the same as the pressure (e.g., internal force, bonding force) between the first medium and the second medium. Accordingly, the pressure measurement assembly 140 may determine pressure data (e.g., a value, a range of values) related to the pressure between the first medium and the second medium. In addition, the pressure measurement assembly 140 can also evaluate a property (e.g., aging information, degradation, internal bond stability) of a material (e.g., a composite material) or a product associated with the first medium and the second medium. For example, the pressure measurement assembly 140 may compare the pressure data to initial pressure data associated with an initial pressure between the first medium and the second medium at the time the material or product is formed. If the pressure data is substantially the same as the initial pressure data, indicating that the bond between the first medium and the second medium is stable; if the difference between the pressure data and the initial pressure data is greater than a certain threshold (e.g., 10%, 20% of the initial pressure data), it indicates that the bond between the first medium and the second medium tends to be unstable, thereby indicating aging or degradation of the material or product.

FIG. 2 is a schematic diagram of exemplary hardware and/or software components of an exemplary computing device shown in accordance with some embodiments of the present application.

In some embodiments, for example, the pressure measurement component 140 may be implemented on the computing device 200 by its hardware, software programs, firmware, or a combination thereof. Although only one such computer is shown, for convenience, computer functions related to pressure measurement as described herein may be implemented in a distributed manner on a plurality of similar platforms to distribute processing load.

For example, computing device 200 may include a communication port 250 to connect to a network to enable data communication. Computing device 200 may also include a processor (e.g., processor 220) in the form of one or more processors (e.g., logic circuits) for executing program instructions. For example, the processor 220 may include interface circuitry and processing circuitry therein. Interface circuit may be configured to receive electrical signals from bus 210, where the electrical signals encode structured data and/or instructions that are processed by processing circuit. The processing circuitry may perform logical computations and then encode the conclusions, results and/or instructions into electrical signals. The interface circuit may then send the electrical signals from the processing circuit via bus 210.

Computing device 200 may further include one or more memories configured to store various data files (e.g., program instructions) processed and/or transmitted by computing device 200. In some embodiments, the one or more memories may include high-speed random access memory (not shown), non-volatile memory (e.g., magnetic storage, flash memory, or other non-volatile solid-state memory) (not shown), a magnetic disk 270, Read Only Memory (ROM) 230, or Random Access Memory (RAM)240, or the like, or any combination thereof. In some embodiments, the one or more memories may further include a remote memory corresponding to the processor 220. The remote memory may be connected to computing device 200 via a network. Computing device 200 may also include program instructions stored in one or more memories (e.g., ROM 230, RAM 240, and/or another type of non-transitory storage medium) that are executed by processor 220. The methods and/or processes disclosed herein may be implemented as program instructions. Computing device 200 may also include I/O components 260 that support input/output between computing device 200 and other components. Computing device 200 may also receive programming and data via network communications.

For illustration purposes only, only one processor is depicted in FIG. 2, and multiple processors 220 are also contemplated. Thus, operations and/or method steps performed by one processor 220 described herein may also be performed by multiple processors, either jointly or separately. For example, if the processor 220 in the computing device 200 performs operations a and B herein, it should be understood that operations a and B may also be performed by two different processors 220 in the computing device 200, jointly or separately (e.g., a first processor performing operation a, a second processor performing operation B, or both a first processor and a second processor performing operations a and B).

It should be noted that the foregoing description is provided for the purpose of illustration only, and is not intended to limit the scope of the present disclosure. Many variations and modifications may be made to the disclosure herein by those of ordinary skill in the art having the benefit of the present disclosure. However, those variations and modifications do not depart from the scope of the present disclosure.

FIG. 3 is a block diagram of an exemplary pressure measurement assembly shown in accordance with some embodiments of the present application. The pressure measurement assembly 300 may be an example of the pressure measurement assembly 140 shown in fig. 1. Pressure measurement assembly 300 includes a laser emitting module 310, a pressure receiving module 320, a fluorescence data determination module 330, and a pressure determination module 340.

The laser emitting module 310 may be configured to cause a light source (e.g., the light source 120) to emit laser light to a sensing component (e.g., the sensing component 110). In some embodiments, laser emission module 310 may adjust one or more properties of the laser (e.g., pulse length, frequency, power, wavelength), such as one or more properties of the fluorescent material, power requirements, etc., according to actual needs.

The pressure receiving module 320 may be configured to cause the sensing assembly to receive the pressure to be measured. Pressure may refer to, among other things, the force exerted on the sensing assembly or the force per unit area (i.e., pressure). As illustrated in fig. 1, the sensing member may include a fluorescent material including a 6-acyl-2-naphthylamine derivative (e.g., chemical formula (1) shown in fig. 6). For example, the fluorescent material may comprise laurdan having a pressure measurement sensitivity of 7.742nm x GPa^-1The pressure response ranges from 0GPa to 22.79 GPa.

Fluorescence data determination module 330 may be configured to obtain fluorescence data from a fluorescence processing component (e.g., fluorescence processing component 130) related to fluorescence generated by the sensing component in response to the laser light. For example, the fluorescence data may include a fluorescence spectrum of the fluorescence, a peak wavelength of the fluorescence spectrum, a color of the fluorescence, or the like, or any combination thereof. Further description of fluorescence data can be found elsewhere in the present application (e.g., fig. 1 and its corresponding description).

The pressure determination module 340 is configured to determine pressure data (e.g., a value of pressure, a range of values of pressure) associated with the pressure to be measured based on the fluorescence data. In some embodiments, the peak wavelength of the fluorescence generated by the fluorescent material varies with the pressure applied to the fluorescent material. Thus, based on the peak wavelength of the fluorescence, the pressure determination module 340 may determine the pressure data from a relationship between the pressure data and the peak wavelength. In some embodiments, the relationship between the pressure data and the peak wavelength is linear. In some embodiments, the relationship between pressure data and peak wavelength may be predetermined based on at least two reference pressures applied to the reference sensing assembly and the reference fluorescence data corresponding thereto. Further description of the relationship between pressure data and peak wavelength may be found elsewhere in this application (e.g., fig. 7-9 and their descriptions).

In some embodiments, the color of the fluorescence generated by the fluorescent material changes as the pressure applied to the fluorescent material changes. Accordingly, the pressure determination module 340 may determine pressure data based on the color of the fluorescence. For example, if the color of the fluorescence is blue or deep blue, the pressure ranges from 1atm to 4.14 GPa. For another example, if the color of the fluorescence is green, the pressure range is 6.09GPa to 11.18 GPa. For another example, if the color of the fluorescence is yellow, the pressure range is 12.03GPa to 16.06 GPa. As another example, if the color of the fluorescence is orange-red, the pressure ranges from 18.38GPa to 22.79 GPa.

In some embodiments, the pressure determination module 340 may be further configured to determine a relationship between the pressure data and the peak wavelength based on at least two reference pressures applied to the reference sensing assembly and the reference fluorescence data corresponding thereto. The pressure determination module 340 may cause a pressurizing device (e.g., diamond anvil, copper cylinder pressure gauge, pressure sensor) to apply at least two reference pressures to the reference sensing assembly.

For each of the at least two reference pressures, the pressure determination module 340 may cause the reference light source to emit laser light to the reference sensing assembly. In some embodiments, the reference light source is similar to or the same as light source 120 shown in fig. 1. The pressure determination module 340 may also determine reference fluorescence data for reference fluorescence generated by the reference sensing assembly in response to the laser light.

In some embodiments, based on the at least two reference pressures and corresponding reference peak wavelengths, the pressure determination module 340 may determine the relationship according to a fitting method (e.g., a linear fitting method). In some embodiments, at least two reference pressures are determined or calibrated using a calibration object (e.g., ruby) for which the relationship between the pressure data and the peak wavelength is known.

The modules in the pressure measurement assembly 300 may be connected or communicate with each other through wired or wireless connections. The wired connection may include a metal cable, an optical cable, a hybrid cable, etc., or any combination thereof. The wireless connection may include a Local Area Network (LAN), a Wide Area Network (WAN), bluetooth, ZigBee, Near Field Communication (NFC), etc., or any combination thereof. Two or more modules may be combined into a single module. Any of the modules may be divided into two or more units. For example, the pressure receiving module 320 and the pressure determining module 340 may be combined into a single module that may cause the sensing assembly to receive the pressure to be measured and determine pressure data related to the pressure to be measured. As another example, pressure measurement assembly 300 may include a storage module (not shown) that may be used to store data generated by the aforementioned module.

FIG. 4 is an exemplary flow chart of pressure measurements shown in accordance with some embodiments of the present application. In some embodiments, process 400 may be implemented by a set of instructions (e.g., an application program) stored in ROM 230 or RAM 240. Processor 220 and/or the modules in fig. 3 may execute the set of instructions, and when executing the instructions, processor 220 and/or the modules may be configured to perform process 400. The operation of the process shown below is for illustration purposes only. In some embodiments, process 400 may be implemented with one or more additional operations not described and/or without one or more of the operations described herein. Additionally, the order of the operations of the process illustrated in FIG. 4 and described below is not intended to be limiting.

At 410, the pressure measurement component 300 (e.g., the pressure receiving module 320) (e.g., processing circuitry of the processor 220) may cause the sensing component (e.g., the sensing component 110) to receive the pressure to be measured. Pressure may refer to, among other things, the force applied to the sensing assembly or the force per unit area (i.e., pressure). As illustrated in fig. 1, the sensing member may include a fluorescent material including a 6-acyl-2-naphthylamine derivative (e.g., chemical formula (1) shown in fig. 6). For example, the fluorescent material may comprise laurdan having a pressure measurement sensitivity of 7.742nm x GPa^-1The pressure response ranges from 0GPa to 22.79 GPa.

In 420, the pressure measurement component 300 (e.g., the laser emitting module 310) (e.g., the processing circuitry of the processor 220) may cause the light source (e.g., the light source 120) to emit laser light to the sensing component. In some embodiments, the pressure measurement component 300 may adjust one or more properties of the laser (e.g., pulse length, frequency, power, wavelength), such as one or more properties of the fluorescent material, power requirements, etc., according to actual needs.

At 430, pressure measurement component 300 (e.g., fluorescence data determination module 330) (e.g., interface circuitry of processor 220) may obtain fluorescence data from a fluorescence processing component (e.g., fluorescence processing component 130) related to fluorescence generated by the sensing component in response to the laser light. For example, the fluorescence data may include a fluorescence spectrum of the fluorescence, a peak wavelength of the fluorescence spectrum, a color of the fluorescence, or the like, or any combination thereof. Further description of fluorescence data can be found elsewhere in the present application (e.g., fig. 1 and its corresponding description).

At 440, the pressure measurement component 300 (e.g., the pressure determination module 340) (e.g., the processing circuitry of the processor 220) may determine pressure data (e.g., a value of the pressure, a range of values of the pressure) related to the pressure to be measured based on the fluorescence data.

In some embodiments, the peak wavelength of the fluorescence generated by the fluorescent material varies with the pressure applied to the fluorescent material. Accordingly, based on the peak wavelength of the fluorescence, pressure measurement assembly 300 may determine pressure data from a relationship between the pressure data and the peak wavelength. In some embodiments, the relationship between the pressure data and the peak wavelength may be a linear relationship. In some embodiments, the relationship between the pressure data and the peak wavelength may be predetermined based on at least two reference pressures applied to the reference sensing assembly and reference fluorescence data corresponding thereto. Further description of the relationship between pressure data and peak wavelength may be found elsewhere in this application (e.g., fig. 7-9 and their descriptions).

In some embodiments, the color of the fluorescence generated by the fluorescent material changes as the pressure applied to the fluorescent material changes. Accordingly, pressure measurement assembly 300 may determine pressure data based on the color of the fluorescence. For example, if the color of the fluorescence is blue or deep blue, the pressure ranges from 1atm to 4.14 GPa. For another example, if the color of the fluorescence is green, the pressure range is 6.09GPa to 11.18 GPa. For another example, if the color of the fluorescence is yellow, the pressure range is 12.03GPa to 16.06 GPa. As another example, if the color of the fluorescence is orange-red, the pressure ranges from 18.38GPa to 22.79 GPa.

It should be noted that the above description is provided for illustrative purposes only, and is not intended to limit the scope of the present application. Various changes and modifications will occur to those skilled in the art based on the description herein. However, such changes and modifications do not depart from the scope of the present application. For example, for purposes of illustration, the pressure measurement process performed by pressure measurement assembly 300 is described above (i.e., pressure measurement assembly 300 acts as a central control assembly), and in actual practice, the pressure measurement process may be performed by different assemblies, e.g., the process of pressure measurement includes: the sensing assembly receives pressure to be measured, the light source emits laser to the sensing assembly, the fluorescence processing assembly determines fluorescence data related to fluorescence generated by the sensing assembly in response to the laser, and the pressure measuring assembly determines pressure data related to the pressure to be measured based on the fluorescence data.

FIG. 5 is a flow chart illustrating an exemplary determination of a relationship between pressure data and peak wavelength according to some embodiments of the present application. In some embodiments, process 500 may be implemented by a set of instructions (e.g., an application program) stored in ROM 230 or RAM 240. Processor 220 and/or the modules in fig. 3 may execute the set of instructions, and when executing the instructions, processor 220 and/or the modules may be configured to perform process 500. The operation of the process shown below is for illustration purposes only. In some embodiments, process 500 may be implemented with one or more additional operations not described and/or without one or more of the operations described herein. Additionally, the order of the operations of the process illustrated in FIG. 5 and described below is not intended to be limiting.

At 510, the pressure measurement assembly 300 (e.g., the pressure determination module 340) (e.g., processing circuitry of the processor 220) may cause a pressurizing device (e.g., a diamond-to-anvil, a copper cylinder pressure gauge, a pressure sensor) to apply at least two reference pressures to the reference sensing assembly.

In some embodiments, the at least two reference pressures may satisfy a preset condition. For example, the at least two reference pressures may range from 0GPa to 30 GPa. For another example, the at least two reference pressures may range from 0GPa to 29 GPa. For another example, the at least two reference pressures may range from 0GPa to 28 GPa. As yet another example, the at least two reference pressures may range from 0GPa to 27 GPa. As yet another example, the at least two reference pressures may range from 0GPa to 26 GPa. As yet another example, the at least two reference pressures may range from 0GPa to 25 GPa. As yet another example, the at least two reference pressures may range from 0GPa to 24 GPa. As yet another example, the at least two reference pressures may range from 0GPa to 23 GPa. As yet another example, the at least two reference pressures may range from 0GPa to 22 GPa.

In some embodiments, at least a portion of the reference sensing assembly may be similar to the sensing assembly 110 shown in FIG. 1. For example, both the reference sensing component and the sensing component 110 include the same fluorescent material. As another example, the features (e.g., size, shape, thickness) of the reference sensing assembly are the same as the features of the sensing assembly 110. As another example, the reference sensing component is identical to sensing component 110.

At 520, for each of the at least two reference pressures, the pressure measurement assembly 300 (e.g., the pressure determination module 340) (e.g., the processing circuitry of the processor 220) may cause the reference light source to emit laser light to the reference sensing assembly. In some embodiments, the reference light source may be similar to or the same as light source 120 shown in fig. 1.

At 530, for each of the at least two reference pressures, the pressure measurement assembly 300 (e.g., the pressure determination module 340) (e.g., the processing circuitry of the processor 220) may determine reference fluorescence data for reference fluorescence generated by the reference sensing assembly in response to the laser. As set forth in operation 430, the reference fluorescence data includes a reference fluorescence spectrum of the reference fluorescence, a reference peak wavelength of the reference fluorescence spectrum, a reference color of the reference fluorescence, or the like, or any combination thereof. Taking the reference fluorescence spectrum as an example, the reference fluorescence spectrum (e.g., the curve shown in fig. 7) can be plotted, with the x-axis representing the reference wavelength and the y-axis representing the normalized reference emission intensity. Similarly, a reference absorption spectrum (e.g., the curve shown in FIG. 8) corresponding to a reference fluorescence spectrum may be plotted, with the x-axis representing the reference wavelength and the y-axis representing the absorbance. Further description of fluorescence and absorption spectra may be found elsewhere in the application (e.g., fig. 7-9 and their corresponding descriptions).

In 540, the pressure measurement component 300 (e.g., the pressure determination module 340) (e.g., the processing circuitry of the processor 220) may determine a relationship between the pressure data and the peak wavelength based on the reference fluorescence data and the at least two reference pressures.

In some embodiments, the at least two reference pressures may be predetermined or predefined. Based on the at least two reference pressures and the corresponding reference peak wavelengths, the pressure measurement assembly 300 may determine the relationship according to a fitting method (e.g., a linear fitting method). In some embodiments, at least two reference pressures are determined or calibrated using a calibration object (e.g., ruby) for which the relationship between the pressure data and the peak wavelength is known. In this case, at least two reference pressures are applied to the calibration object and the reference sensing assembly. Laser light can then be emitted to the calibration object and the reference sensing assembly and fluorescence data of the calibration object and the reference sensing assembly is obtained. Since the "relationship between pressure data and peak wavelength" of the calibration object is known, at least two reference pressures may be determined based on the fluorescence data of the calibration object and the known "relationship between pressure data and peak wavelength". Accordingly, for a reference sensing assembly, a relationship between the pressure data and the peak wavelength may be further determined based on at least two reference pressures and a reference peak wavelength of the reference sensing assembly.

It should be noted that the above description is provided for illustrative purposes only, and is not intended to limit the scope of the present application. Various changes and modifications will occur to those skilled in the art based on the description herein. However, such changes and modifications do not depart from the scope of the present disclosure.

FIG. 7 is a schematic illustration of an exemplary reference fluorescence spectrum of a reference sensing assembly at least two reference pressures according to some embodiments of the present application. FIG. 8 is a schematic illustration of absorption spectra of a reference sensing assembly at least two reference pressures according to some embodiments of the present application. FIG. 9 is a schematic illustration of an exemplary relationship between pressure data and peak wavelength shown in accordance with some embodiments of the present application.

As illustrated in fig. 5, at least two reference pressures are applied to the reference sensing assembly and a relationship between the pressure data and the peak wavelength is obtained. Specifically, a diamond-on-anvil (DAC) having an anvil surface diameter of 500 μm may be used as the pressurizing means. The center area of the T301 steel sheet was pre-stressed by DAC, and the thickness of the pre-stressed steel sheet was 46 μm. A hole 170 μm in diameter was drilled in the central region of the steel sheet by a laser and used as a sample chamber (also referred to as "experimental chamber"). In addition, a calibration object (e.g., a fluorescent material containing ruby, hereinafter referred to as "ruby") and a reference sensing component (e.g., a crystal block of laurdan, hereinafter referred to as "laurdan") having a known relationship between pressure data and peak wavelength are placed in the chamber and at least two reference pressures are applied thereto by the DAC. For each of the at least two reference pressures, a laser light having a wavelength of 360nm is emitted to the calibration object and the reference sensing assembly, respectively. The reference sensing assembly then generates a first fluorescence in response to the laser light and the calibration object generates a second fluorescence in response to the laser light. Fluorescence data (e.g., fluorescence spectrum of the fluorescence, peak wavelength of the fluorescence spectrum, absorption spectrum associated with the fluorescence, color of the fluorescence) of the calibration object and the reference sensing assembly is then obtained. From the known relationship between pressure data and peak wavelength and the fluorescence data of the calibration object, values of at least two reference pressures can be determined. Accordingly, as shown in fig. 7 and 8, fluorescence data of the reference sensing assembly at each of the at least two reference pressures can be determined.

Further, for a reference sensing assembly, based on at least two reference pressure values and a reference peak wavelength (experimental data is shown in table 1 below), a relationship between the pressure data and the peak wavelength may be determined according to a fitting method.

TABLE 1

For example only, as shown in FIG. 9, the relationship between pressure data and peak wavelength may be determined according to a linear fitting method:

λ＝450.948+7.742P (1)

wherein λ refers to the peak wavelength in nm and P refers to the pressure in GPa. It can be seen that the sensitivity of the reference sensing assembly (e.g., laurdan) is 7.742(nm x GPa)^-1) And the pressure sensor is relatively high, and can meet the pressure measurement requirements in different application scenes. During the fluorescent response, electrons of the fluorescent material are excited by the laser. The electrons absorb a part of the energy of the laser light, and then transition from a ground state to a high-energy excited state. The electrons can then spontaneously transition from the excited state to the ground state to radiate a portion of the energy and produce fluorescence. The absorption spectrum correspondingly represents the transition process from the ground state to the high-energy excited state and represents the energy absorption condition of the material to different wavelengths; the fluorescence spectrum correspondingly characterizes the transition process from a high-energy excited state to a ground state and represents the fluorescence intensity of the material at different wavelengths. As shown in fig. 8, each absorption spectrum has an absorption edge representing the lowest energy required for an electron to be excited to complete a transition from the ground state to the excited state. Accordingly, it can be found that the relationship between the pressure data and the wavelength of the absorption edge is also linear, which indicates that a linear relationship between the pressure data and the peak wavelength is reasonable.

Having thus described the basic concepts, it will be apparent to those of ordinary skill in the art having read this application that the foregoing disclosure is to be construed as illustrative only and is not limiting of the application. Various modifications, improvements and adaptations of the present application may occur to those skilled in the art, although they are not explicitly described herein. Such modifications, improvements and adaptations are proposed in the present application and thus fall within the spirit and scope of the exemplary embodiments of the present application.

Also, this application uses specific language to describe embodiments of the application. For example, "one embodiment," "an embodiment," and/or "some embodiments" means that a particular feature, structure, or characteristic described in connection with at least one embodiment of the application. Therefore, it is emphasized and should be appreciated that two or more references to "an embodiment" or "one embodiment" or "an alternative embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, certain features, structures, or characteristics of one or more embodiments of the application may be combined as appropriate.

Moreover, those of ordinary skill in the art will understand that aspects of the present application may be illustrated and described in terms of several patentable species or situations, including any new and useful combination of processes, machines, articles, or materials, or any new and useful improvement thereof. Accordingly, various aspects of the present application may be embodied entirely in hardware, entirely in software (including firmware, resident software, micro-code, etc.), or in a combination of hardware and software. The above hardware or software may be referred to as a "unit", "module", or "system". Furthermore, aspects of the present application may take the form of a computer program product embodied in one or more computer-readable media, with computer-readable program code embodied therein.

A computer readable signal medium may include a propagated data signal with computer program code embodied therewith, for example, in baseband or as part of a carrier wave. Such a propagated signal may take many forms, including electromagnetic, optical, and the like, or any suitable combination thereof. A computer readable signal medium may be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code on a computer readable signal medium may be propagated over any suitable medium, including radio, electrical cable, fiber optic cable, RF, etc., or any combination of the preceding.

Computer program code required for the operation of various portions of the present application may be written in any combination of any one or more programming languages, including an object oriented programming language such as Java, Scala, Smalltalk, Eiffel, JADE, Emerald, C + +, C #, VB, NET, Python, and the like, and conventional procedural programming languages, such as Java, Scala, Smalltalk, Eiffel, JADE, Emerald, C + +, C #, VB, NET, Python, and the like

"C" programming language, Visual Basic, Fortran 2003, Perl, COBOL 2002, PHP, ABAP, dynamic programming languages such as Python, Ruby, and Groovy, or other programming languages. The program code may execute entirely on the user's computer, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server as a stand-alone software package. In the latter scenario, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the use of a network service provider's network) or provided in a cloud computing environment or as a service, such as a software service (SaaS).

Additionally, the order in which elements and sequences of the processes described herein are processed, the use of alphanumeric characters, or the use of other designations, is not intended to limit the order of the processes and methods described herein, unless explicitly claimed. While various presently contemplated embodiments of the invention have been discussed in the foregoing disclosure by way of example, it is to be understood that such detail is solely for that purpose and that the appended claims are not limited to the disclosed embodiments, but, on the contrary, are intended to cover all modifications and equivalent arrangements that are within the spirit and scope of the embodiments herein. For example, although implementations of the various components described above may be embodied in a hardware device, they may also be implemented as a pure software solution, e.g., installation on an existing server or mobile device.

Similarly, it should be noted that in the preceding description of embodiments of the application, various features are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure aiding in the understanding of one or more embodiments of the invention. This method of disclosure, however, is not to be interpreted as reflecting an intention that the claimed subject matter requires more features than are expressly recited in each claim. Rather, claimed subject matter may lie in less than all features of a single foregoing disclosed embodiment.

Claims

1. A method of pressure measurement, comprising:

enabling a sensing assembly to receive the pressure to be measured, wherein the sensing assembly comprises a 6-lauroyl-N, N-dimethyl-2-naphthylamine (laurdan) fluorescent material, and the sensitivity range of the fluorescent material is 7nm x GPa^-1To 8nm x GPa^-1；

Causing a light source to emit laser light toward the sensing assembly;

obtaining fluorescence data from a fluorescence processing assembly relating to fluorescence generated by the sensing assembly in response to the laser light, the fluorescence data including a peak wavelength of a fluorescence spectrum of the fluorescence;

determining pressure data related to the pressure to be measured based on the peak wavelength according to a relationship between the pressure data and the peak wavelength, wherein the relationship between the pressure data and the peak wavelength is determined by the following process:

applying at least two reference pressures to a reference sensing assembly, at least a portion of the reference sensing assembly being identical to the sensing assembly, the at least two reference pressures ranging from 0GPa to 30 GPa;

for each of the at least two reference pressures,

emitting laser light from a reference light source to the reference sensing assembly; and

determining reference fluorescence data for reference fluorescence: the reference fluorescence is generated by the reference sensing assembly in response to the laser light, the reference fluorescence data corresponding to the reference pressure, the reference fluorescence data including a reference peak wavelength of a reference fluorescence spectrum at the reference pressure; and

determining the relationship between pressure data and peak wavelength based on the reference fluorescence data and the at least two reference pressures.

2. The method of claim 1, wherein the pressure data associated with the pressure to be measured comprises a value of the pressure or a range of values of the pressure.

3. The method of claim 1, wherein the fluorescence data further comprises a color of the fluorescence, the method further comprising:

determining the pressure data based on the color of the fluorescence.

4. The method of claim 1, wherein the relationship between pressure data and peak wavelength is a linear relationship.