WO2019024059A1

WO2019024059A1 - Raman detection method and apparatus, and storage medium

Info

Publication number: WO2019024059A1
Application number: PCT/CN2017/095888
Authority: WO
Inventors: 骆磊
Original assignee: 深圳前海达闼云端智能科技有限公司
Priority date: 2017-08-03
Filing date: 2017-08-03
Publication date: 2019-02-07
Also published as: CN107820567A; CN107820567B

Abstract

A Raman detection method and apparatus, and a storage medium. The apparatus comprises a processor (11) and a laser transmitter (12) connected to the processor (11). The processor (11) is used for obtaining an image collected by a photographing device (13) and sending the image to a display for being displayed. The image is used for allowing a user to adjust, according to the image, a relative position and a distance between the Raman detection apparatus and a substance to be detected, and the image comprises an image of the substance to be detected. The processor (11) is also used for obtaining the distance between the Raman detection apparatus and the substance to be detected, determining whether the distance falls within a preset distance range, and when the distance falls within the preset distance range, controlling the laser transmitter (12) to emit laser used for detection of the substance to be detected, so that the focus of the laser is located on the substance to be detected.

Description

Raman detection method, device and storage medium

Technical field

The present disclosure relates to the field of Raman detection, and in particular, to a Raman detection method, apparatus, and storage medium.

Background technique

At present, the application of Raman detection is more and more extensive, from professional oil exploration, drug supervision, to security inspection close to civilian use, anti-drug, and with the decline of cost in the future, it will certainly enter the civilian market for pesticide testing, real and fake goods. Detection and so on.

The current Raman detecting device needs to emit laser light to the substance to be tested, and causes the focusing point of the laser to fall on the substance to be tested, thereby collecting the scattered Raman spectrum to determine what the substance to be tested is. In the prior art, the distance between the Raman detecting device and the substance to be tested is adjusted by the human eye to observe the laser spot irradiated by the laser on the substance to be tested, and the focus point of the laser is determined to be determined when the laser spot is minimum. On the substance to be tested.

However, since this method is manually operated, the user has an error in judging the laser spot. Therefore, the distance between the Raman detecting device and the substance to be tested is not easy to control, and since the laser is highly irritating, it is long. Looking at the laser point in time, it is easy to have strong damage to the eyes.

Summary of the invention

In order to solve the above problems, the present disclosure provides a Raman detection method, apparatus, and storage medium.

According to a first aspect of the embodiments of the present disclosure, there is provided a Raman detecting apparatus comprising: a processor, a laser emitter connected to the processor; the processor, configured to acquire an image captured by an imaging device, and Sending the image to a display display, wherein the image is for causing the user to adjust a relative position and distance between the Raman detecting device and the substance to be tested according to the image, The image includes an image of a substance to be tested, and the processor is further configured to acquire a distance between the Raman detecting device and the substance to be tested, and determine whether the distance is within the preset distance range And controlling, when the distance is within the preset distance range, the laser emitter to emit a laser for detecting the substance to be tested, so that a focus point of the laser is located on the substance to be tested.

According to a second aspect of the embodiments of the present disclosure, there is provided a Raman detecting method applied to a Raman detecting device, the method comprising: acquiring an image acquired by an image capturing device, and transmitting the image to a display, wherein The image is used to cause the user to adjust a relative position and distance between the Raman detecting device and the substance to be tested according to the image, the image including an image of a substance to be tested, and acquiring the Raman detecting device a distance from the substance to be tested; determining whether the distance is within the preset distance range; and transmitting a laser for detecting the substance to be tested when the distance is within the preset distance range So that the focus point of the laser is on the substance to be tested.

According to a third aspect of the embodiments of the present disclosure, a computer readable storage medium is provided, the computer readable storage medium including one or more programs, the one or more programs for performing the first aspect described above Methods.

According to a fourth aspect of the embodiments of the present disclosure, there is provided a Raman detecting apparatus, comprising: the computer readable storage medium of the above third aspect; and one or more processors for executing the computer Read the program in the storage medium.

With the above technical solution, the Raman detecting device provided by the solution includes: the Raman detecting device is provided with a processor and a laser transmitter connected to the processor, and the processor acquires an image acquired by the image capturing device, and the image is obtained Sending to a display device display, wherein the image is for causing the user to adjust a relative position and distance between the Raman detecting device and the test substance according to the image, the image including a substance to be tested An image; the processor acquires the distance and intelligently controls the opening and closing of the laser emitter according to the distance, so that the user only needs to adjust the relative position and distance between the Raman detecting device and the substance to be tested according to the image displayed by the display. When the distance is adjusted to a preset distance range, the Raman detecting device emits laser light for Raman detection, thereby avoiding long-term user time Observing the laser spot of the laser on the substance to be tested reduces the damage to the user's eyes.

DRAWINGS

FIG. 1 is a schematic structural diagram of a Raman detecting apparatus according to an embodiment of the present disclosure;

FIG. 2 is a schematic structural diagram of another Raman detecting apparatus according to an embodiment of the present disclosure;

FIG. 3 is a schematic structural diagram of a third Raman detecting apparatus according to an embodiment of the present disclosure;

4 is a schematic diagram of a display interface of a display according to an embodiment of the present disclosure;

FIG. 5 is a schematic diagram of a calculation principle of a preset distance range according to an embodiment of the present disclosure;

FIG. 6 is a schematic flowchart of a Raman detection method according to an embodiment of the present disclosure;

FIG. 7 is a schematic structural diagram of hardware of a Raman detecting apparatus according to an embodiment of the present disclosure.

Detailed ways

The specific embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are not to be construed

1 is a schematic structural diagram of a Raman detecting apparatus according to an embodiment of the present disclosure. As shown in FIG. 1, the apparatus includes: a processor 11 coupled to the processor 11 and a laser emitter 12;

The processor 11 is configured to acquire an image captured by an imaging device, and send the image to a display, wherein the image is used to enable the user to adjust a relative relationship between the Raman detection device and the substance to be tested according to the image. Position and distance, the image includes an image of the substance to be tested.

The processor 11 is further configured to acquire a distance between the Raman detecting device and the substance to be tested, and determine whether the distance is within the preset distance range, and when the distance is within the preset distance range, control The laser emitter 12 emits a laser for detecting the substance to be tested such that a focus point of the laser is on the substance to be tested.

The processor 11 is further configured to turn off the laser emitter 13 when the distance is outside the preset distance range.

In this way, the user can adjust the relative position and distance between the Raman detecting device and the substance to be tested through the image displayed on the display, so that the distance between the Raman detecting device and the substance to be tested can be quickly adjusted to a preset. Within the distance range, the efficiency of Raman detection is improved.

In a possible implementation, the camera device may be a camera. As shown in FIG. 2, the camera device 13 may be disposed on the Raman detecting device, and connected to the processor 11 for acquiring the image, and Performing real-time focusing on the preset position in the image as a focus point; the processor 11 is configured to acquire a focusing distance of the imaging device 13 (ie, a distance from a lens of the imaging device to a focusing plane), wherein the substance to be tested is When the preset position is located, the focus distance is the distance.

In this mode, in order to improve the user experience, the preset position may be the center position of the captured image, the image capturing device may acquire an image, and focus on the image center position in real time, and the user observes the image displayed by the display, and adjusts the image by The relative position between the detecting device and the substance to be tested causes the substance to be tested to be at the center of the image. At this time, the imaging device obtains the focusing distance, which is equivalent to the distance between the Raman detecting device and the substance to be tested. Looking at the image displayed on the display, adjusting the distance between the Raman detecting device and the substance to be tested, to move the distance between the Raman detecting device and the substance to be tested to a preset distance range, when the processor determines that the distance is located When the preset distance is within the range, the laser emitter is controlled to emit laser light. At this time, the focus point of the laser will be located on the substance to be tested, so that the Raman spectrum of the scattered light can be collected for substance detection.

Of course, the imaging device may also be an external imaging device. When performing Raman detection, the imaging device may be connected to the Raman detection device. For example, the Raman detection device may include an interface for connecting the imaging device. When the user performs Raman detection, the imaging device is connected to the Raman detecting device through the interface, and the Raman detection can be performed.

In another possible implementation, the device may further include a distance sensor coupled to the processor, configured to collect a distance between the Raman detecting device and the substance to be tested, and send the distance to the processing. The processor is configured to acquire a distance between the Raman detecting device and the substance to be tested from the distance sensor.

For example, as shown in FIG. 3, the Raman detecting device includes a processor 11, an imaging device 13, a distance sensor 14 and a laser emitter 12 respectively connected to the processor 11, and the imaging device 13 can acquire an image and The image is sent to the display by the processor 11, and the display displays the image, so that the user can look at the image displayed on the display to adjust the relative position between the Raman detecting device and the substance to be tested, so that the substance to be tested is at the center of the image, and then Adjusting the distance between the Raman detecting device and the substance to be tested to move the distance between the Raman detecting device and the substance to be tested to a preset distance range, and in the process of adjusting by the user, the distance sensor collects Raman detection a distance between the device and the substance to be tested, and transmitting the detected distance to the processor, and when the processor determines that the distance is within the preset distance range, controlling the laser emitter to emit laser light, at this time, the focus point of the laser It will be located on the substance to be tested, so that the Raman spectrum of the scattered light can be collected for substance detection.

It should be noted that the imaging device and the distance sensor can be disposed as close as possible, or the imaging device and the distance sensor are integrated to avoid a distance when the distance between the imaging device and the distance sensor is large. The deviation between the distance collected by the sensor and the actual distance between the Raman detection device and the substance to be tested has a large influence on the subsequent Raman detection accuracy.

In this embodiment, the display may further display the distance and the preset distance range, so that the user can adjust the distance more conveniently by referring to the distance displayed by the display and the preset distance range, so that the user can quickly adjust the distance. The distance is adjusted to within the preset distance range to increase the detection efficiency of the Raman detection.

For example, as shown in FIG. 4, FIG. 4 shows an interface diagram displayed by a display. The cross mark in the interface diagram is the center position of the image. As can be seen from the figure, the displayed distance is 32.7 mm. And the displayed "28-32mm" is the preset distance range, therefore, the displayed distance is not within the preset distance range, at this time, the user can reduce the distance between the Raman detecting device and the substance to be tested, This distance is made to fall within the preset distance range.

In this embodiment, the processor may acquire an image and a distance according to a preset frequency, and the preset frequency may be a value such as 20 Hz, 50 Hz, etc., so as to obtain an image and a distance according to the acquired substance to be tested. The image and distance of the substance to be tested displayed on the display are updated. The higher the preset frequency is set, the faster the update frequency is, which makes the user feel more sensitive.

In addition, the above display may be a terminal having a display function externally connected to the Raman detecting device, such as a mobile phone, a computer, etc., of course, the display may also be disposed on the Raman detecting device, so that the user only needs to pull according to the pull The content displayed on the display of the man detecting device adjusts the relative position and distance between the Raman detecting device and the substance to be tested, and does not need to connect other devices in the Raman detecting device, thereby facilitating user operation and improving user experience. .

The above preset distance range is explained below:

The preset distance range is preset in the processor, and the preset distance range may be obtained according to a laser focal length of the laser emitter and a distance between the laser emitter and the imaging device, and the Raman detecting device shown in FIG. 5 is taken as an example. For example, as shown in FIG. 5, the Raman detecting device includes a processor (not shown), an imaging device 13 connected to the processor, and a laser emitter 12 for capturing images, and The center position in the image is used as a focus point for real-time focusing; the processor 11 acquires a focusing distance of the imaging device 13, wherein when the substance to be tested is located at the preset position, the focusing distance is equivalent to Raman detection. a distance between the device and the substance to be tested, and when the distance is within the preset distance, controlling the laser emitter 12 to emit a laser for detecting the substance to be tested, so that the focus of the laser is located Test the substance. The imaging device 13 and the laser emitter 12 are disposed in the same plane.

Wherein, since there is a gap between the laser emitter and the camera, in order to ensure that the laser light emitted by the laser emitter can be irradiated onto the substance to be tested, the laser emitter 12 can be obliquely mounted on the Raman detecting device, and the The angle between the laser emitter 12 and the Raman detecting device in the oblique direction is the mounting tilt angle α.

It should be noted that the above-mentioned imaging device and the laser emitter are installed for the purpose of more intuitive presentation of the present solution, which is not limited, and may be other installation methods, as long as the imaging device and the laser emitter are in one plane. And the viewing angle range of the imaging device includes the laser focus Just fine.

Thus, since the laser emitter is mounted obliquely, the optical axis of the laser emitter (the laser light emitted by the laser emitter is transmitted along the optical axis) and the optical axis of the camera have an intersection, at this time, the optical axis of the laser emitter, the laser The distance between the transmitter and the camera, and the optical axis of the imaging device may constitute a right-angled triangle. For example, if the intersection is located on the substance to be tested, and the distance from the laser emitter to the intersection is the laser focal length of the laser emitter, The triangle can be as shown by the dashed line in Fig. 5. Since the laser focal length and the mounting tilt angle of the laser emitter are known, the distance from the camera to the intersection can be calculated by the following formula:

f=d*sinα

Where f is the distance from the camera to the intersection, d is the laser focal length, and α is the mounting angle.

The obtained f is the reference distance, that is, when the distance between the Raman detecting device and the substance to be tested is the reference distance, the focus point of the laser is located on the substance to be tested, but considering the actual use, the Raman detection The distance between the device and the substance to be tested is manually adjusted. Therefore, in order to reduce the error of manual adjustment, the preset distance range may be obtained by setting a preset distance error c. For example, the preset distance range may be (fc, f+c).

It should be noted that, because the laser focal length of the Raman detecting device is not too large, in order to avoid the problem that the detection of the fixed distance is short due to the small inclination angle α of the laser emission, the value of a should be minimized in the design of the device. That is to make the lens of the imaging device and the laser as close as possible, so that α is as close as possible to the vertical to achieve the maximum detection distance.

With the above Raman detecting device, the user only needs to adjust the relative position and distance between the Raman detecting device and the substance to be tested according to the image displayed on the display, and when the distance is adjusted within the preset distance range, the Raman detecting device transmits The Raman detection of the laser avoids the user to observe the laser spot of the laser on the substance to be tested for a long time, thereby reducing the damage to the eyes of the user.

FIG. 6 is a Raman detection method according to an embodiment of the present disclosure. As shown in FIG. 6, the method is applied to a Raman detection apparatus, and the method includes:

S601. Acquire an image acquired by the imaging device, and send the image to a display.

Wherein the image is used to cause the user to adjust a relative position and distance between the Raman detecting device and the substance to be tested according to the image, the image comprising an image of the substance to be tested.

In this step, the user can adjust the relative position and distance between the Raman detecting device and the substance to be tested through the image displayed on the display, so that the distance between the Raman detecting device and the substance to be tested can be quickly adjusted. Up to the preset distance range, the efficiency of Raman detection is improved.

S602. Obtain a distance between the Raman detecting device and the substance to be tested.

In this step, the distance between the Raman detecting device and the substance to be tested can be obtained by any one of the following two implementation modes:

Method 1: The imaging device is disposed on the Raman detecting device, and the Raman detecting device obtains a focusing distance obtained by real-time focusing the preset position in the image as a focus point, wherein the substance to be tested is located in the pre-measurement When the position is set, the focus distance is the distance.

In this mode, in order to improve the user experience, the preset position may be the center position of the captured image, the image capturing device may acquire an image, and focus on the center position of the image in real time, and the user observes the image displayed by the display, and moves through the image. The Detector device places the substance to be tested at the center of the image. At this time, the camera device obtains the focus distance, which is equivalent to the distance between the imaging device and the substance to be tested.

Manner 2: The Raman detecting device is provided with a distance sensor, and the distance between the Raman detecting device collected by the distance sensor and the substance to be tested is acquired.

S603. Determine whether the distance is within the preset distance range.

S604. When the distance is within the preset distance range, emit a laser for detecting the substance to be tested, so that a focus point of the laser is located on the substance to be tested.

Optionally, when the distance is outside the preset distance range, the emitting of the laser light is stopped.

With the above Raman detection method, the user only needs to adjust the relative position and distance between the Raman detecting device and the substance to be tested according to the image displayed on the display, and when the distance is adjusted to the preset distance range, The Raman detecting device emits a laser for Raman detection, which prevents the user from observing the laser spot of the laser on the substance to be tested for a long time, thereby reducing the damage to the eyes of the user.

It should be noted that the specific description of each step of the foregoing method may refer to the related description of the foregoing Raman detecting device, and details are not described herein again.

FIG. 7 is a block diagram of a Raman detecting apparatus according to an embodiment of the present disclosure. As shown in FIG. 7, the apparatus 700 may include: a processor 701, a memory 702, a multimedia component 703, and an input/output (I/). O) interface 704, and communication component 705.

The processor 701 is configured to control the overall operation of the apparatus 700 to complete all or part of the steps described above for the Raman detection method. Memory 702 is used to store various types of data to support operations at the device 700, such as may include instructions for any application or method operating on the device 700, as well as application related data, such as Contact data, sent and received messages, pictures, audio, video, and more.

The memory 702 can be implemented by any type of volatile or non-volatile storage terminal device or a combination thereof, such as Static Random Access Memory (SRAM), electrically erasable programmable read only memory. (Electrically Erasable Programmable Read-Only Memory, EEPROM for short), Erasable Programmable Read-Only Memory (EPROM), Programmable Read-Only Memory (PROM) Read-Only Memory (ROM), magnetic memory, flash memory, disk or optical disk. The multimedia component 703 can include a screen and an audio component. The screen may be, for example, a touch screen, and the audio component is used to output and/or input an audio signal. For example, the audio component can include a microphone for receiving an external audio signal. The received audio signal may be further stored in memory 702 or transmitted via communication component 705. The audio component also includes at least one speaker for outputting an audio signal. The I/O interface 704 provides an interface between the processor 701 and other interface modules. The other interface modules may be keyboards, mice, buttons, and the like. These buttons can be virtual buttons or Physical button. Communication component 705 is used for wired or wireless communication between the device 700 and other terminal devices. Wireless communication, such as Wi-Fi, Bluetooth, Near Field Communication (NFC), 2G, 3G or 4G, or a combination of one or more of them, so the corresponding communication component 705 can include: Wi-Fi module, Bluetooth module, NFC module.

In an exemplary embodiment, the device 700 may be configured by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), and digital signal processing terminals (Digital). Signal Processing Device (DSPD), Programmable Logic Device (PLD), Field Programmable Gate Array (FPGA), controller, microcontroller, microprocessor or other electronic components Implemented to perform the Raman detection method described above.

The embodiment of the present disclosure further provides a computer readable storage medium 1 including one or more programs for performing a Raman detection method, the method comprising: Acquiring an image acquired by the camera device and transmitting the image to a display for displaying, wherein the image is used to cause the user to adjust a relative position and a distance between the Raman detecting device and the substance to be tested according to the image, the image including An image of the substance to be tested, obtaining a distance between the Raman detecting device and the substance to be tested; determining whether the distance is within the preset distance range; and when the distance is within the preset distance range, transmitting for detecting The laser of the substance to be tested is such that the focus of the laser is on the substance to be tested.

Optionally, the method further includes turning off the laser emitter when the distance is outside the preset distance range.

Optionally, the imaging device is disposed on the Raman detecting device, and the obtaining the distance between the Raman detecting device and the substance to be tested comprises: performing real-time focusing on the preset position in the image as a focus point. a focusing distance, wherein the focusing distance is the distance when the substance to be tested is at the preset position.

Optionally, the Raman detecting device is provided with a distance sensor, and the obtaining the distance between the Raman detecting device and the substance to be tested comprises: acquiring the Raman detecting device collected by the distance sensor and the substance to be tested The distance between them.

The present disclosure also provides a Raman detecting apparatus including the above computer readable storage medium 1; and one or more processors for executing the program in the computer readable storage medium 1.

The Raman detecting device may be a terminal such as a mobile phone or a tablet computer.

The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solutions of the present disclosure within the scope of the technical idea of the present disclosure. These simple variations are all within the scope of the disclosure.

It should be further noted that the specific technical features described in the above specific embodiments may be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure is applicable to various possibilities. The combination method will not be described separately.

In addition, any combination of various embodiments of the present disclosure may be made as long as it does not deviate from the idea of the present disclosure, and should also be regarded as the disclosure of the present disclosure.

Claims

A Raman detecting device, comprising: a processor, a laser emitter connected to the processor;

The processor is configured to acquire an image captured by an imaging device, and send the image to a display, wherein the image is used to enable the user to adjust the Raman detection device and the to-be according to the image Measuring the relative position and distance between the substances, the image comprising an image of the substance to be tested;

The processor is further configured to acquire a distance between the Raman detecting device and the substance to be tested, and determine whether the distance is within the preset distance range, and the distance is at the preset When the distance is within the range, the laser emitter is controlled to emit laser light for detecting the substance to be tested, so that the focus point of the laser is located on the substance to be tested.
The apparatus according to claim 1, wherein said processor is further configured to turn off said laser emitter when said distance is outside said predetermined distance range.
The apparatus according to claim 1 or 2, wherein said image pickup device is disposed on said Raman detecting means, coupled to said processor, for collecting said image, and in said image The preset position is used as a focus point for real-time focusing;

The processor is configured to acquire a focusing distance of the imaging device, wherein the focusing distance is the distance when the substance to be tested is located in the preset position.
The device according to claim 1 or 2, wherein the device further comprises a distance sensor coupled to the processor for collecting a distance between the Raman detecting device and the substance to be tested, And transmitting the distance to the processor;

The processor is configured to acquire, from the distance sensor, a distance between the Raman detecting device and the substance to be tested.
The apparatus according to claim 1 or 2, wherein said display is disposed on said Raman detecting means and coupled to said processor for displaying said image acquired by said processor.
A Raman detecting method, which is applied to a Raman detecting device, the method comprising:

Acquiring an image acquired by the camera device and transmitting the image to a display, wherein the image is for causing the user to adjust a relative position between the Raman detecting device and the substance to be tested according to the image And distance, the image comprising an image of the substance to be tested;

Obtaining a distance between the Raman detecting device and the substance to be tested;

Determining whether the distance is within the preset distance range;

When the distance is within the preset distance range, a laser for detecting the substance to be tested is emitted such that a focus point of the laser is located on the substance to be tested.
The method according to claim 6, wherein the emitting of the laser light is stopped when the distance is outside the preset distance range.
The method according to claim 6 or 7, wherein the imaging device is disposed on the Raman detecting device, and the obtaining the distance between the Raman detecting device and the substance to be tested comprises:

a focus distance obtained by real-time focusing the preset position in the image as a focus point, wherein the focus distance is the distance when the substance to be tested is located at the preset position.
The method according to claim 6 or 7, wherein the Raman detecting device is provided with a distance sensor, and the distance between the Raman detecting device and the substance to be tested is acquired. From:

Obtaining a distance between the Raman detecting device collected by the distance sensor and the substance to be tested.
A computer readable storage medium, comprising: one or more programs, the one or more programs for performing the method of any one of claims 6 to 8. .
A Raman detecting device, comprising:

The computer readable storage medium of claim 10;

One or more processors for executing a program in the computer readable storage medium.