阅读说明：本技术 一种适用于手持式x荧光光谱仪的样品成像系统 (Sample imaging system suitable for hand-held X fluorescence spectrometer ) 是由 刘召贵 何爱军 王嘉勇 高峰 石彦杰 刘凯 任丹丹 于 2020-08-12 设计创作，主要内容包括：本发明公开了一种适用于手持式X荧光光谱仪的样品成像系统,包括：位于光谱仪的测试腔内并与测试腔窗口对应设置的摄像头模块；背景光模块；输入端与摄像头模块的输出端连接的信号转接模块；输入端与信号转接模块的输出端连接的信号传输模块；以及与信号传输模块的输出端连接用于对图像进行切割和局部放大处理的图像处理模块；其中,信号传输模块包括FPC传输线、包裹在该FPC传输线外部的导电布、包裹在导电布外部的绝缘布以及安装在FPC两端的插头；本发明的样品成像系统能够对分析样品进行成像并将图像信号传输到终端,并解决了在长距离传输等所造成的图像不清晰、花屏、黑屏、卡顿等问题,实现了CMOS图像信号的长距离传输。(The invention discloses a sample imaging system suitable for a handheld X-ray fluorescence spectrometer, which comprises: the camera module is positioned in the test cavity of the spectrometer and corresponds to the window of the test cavity; a background light module; the input end of the signal switching module is connected with the output end of the camera module; the input end of the signal transmission module is connected with the output end of the signal switching module; the image processing module is connected with the output end of the signal transmission module and is used for cutting and partially amplifying the image; the signal transmission module comprises an FPC transmission line, conductive cloth wrapped outside the FPC transmission line, insulating cloth wrapped outside the conductive cloth and plugs arranged at two ends of the FPC; the sample imaging system can image an analysis sample and transmit an image signal to a terminal, solves the problems of unclear image, screen splash, screen blackness, blockage and the like caused by long-distance transmission and the like, and realizes the long-distance transmission of a CMOS image signal.)

1. A sample imaging system adapted for use with a handheld X-ray fluorescence spectrometer, comprising: the camera module is positioned in the test cavity of the spectrometer and corresponds to the window of the test cavity; the background light module is used for providing background light for a tested sample positioned on the test cavity window; the input end of the signal switching module is connected with the output end of the camera module; the input end of the signal transmission module is connected with the output end of the signal switching module; the image processing module is connected with the output end of the signal transmission module and is used for cutting and partially amplifying the image;

the signal transmission module comprises an FPC transmission line, conductive cloth wrapped outside the FPC transmission line, insulating cloth wrapped outside the conductive cloth and plugs arranged at two ends of the FPC transmission line.

2. A hand-held garment as claimed in claim 1The sample imaging system of the hand-held X fluorescence spectrometer is characterized in that a camera interface of the camera module is a parallel port, and the signal switching module comprises a first camera socket, a bus transceiver, a bus buffer and a first switching socket; the input end of the first camera socket is connected with a camera interface of the camera module, the input end of the bus transceiver is correspondingly connected with an image signal bus pin and a control signal bus pin of the first camera socket, and the output end of the bus transceiver is correspondingly connected with the image signal bus pin and the control signal bus pin of the first adapter socket; the input end and the output end of the bus buffer are respectively connected with the first camera socket and the I of the first adapter socket²The pins of the C bus are correspondingly connected, and the first switching socket is connected with the input end of the signal transmission module.

3. The system of claim 2, wherein the bus transceiver comprises an image signal bus transceiver unit and a control signal bus transceiver unit, wherein an input of the image signal bus transceiver unit is connected to an image signal bus pin of the first camera socket, and an output of the image signal bus transceiver unit is connected to an image signal bus pin of the first adapter socket; the input end of the control signal bus receiving and transmitting unit is connected with the control signal bus pin of the first camera socket, and the output end of the control signal bus receiving and transmitting unit is connected with the control signal bus pin of the first adapter socket.

4. The system of claim 1, wherein the camera interface of the camera module is an MIPI interface, the signal adapter module comprises an adapter PCB, and a second camera socket and a second adapter socket integrated on the adapter PCB, an input of the second camera socket is correspondingly connected to the MIPI interface, an output of the second camera socket is correspondingly connected to an input of the second adapter socket, and an output of the second adapter socket is correspondingly connected to the signal transmission module.

5. The system of claim 4, wherein the MD0 pins, MD1 pins, MD2 pins, MD3 pins and MC pins of the second camera socket and the second adapter socket are wired with equal length on the adapter PCB board and have a wire diameter of 4 mil.

6. The system of claim 4 or 5, wherein the adapter PCB is copper-clad on both sides and is grounded, and the area of the copper clad is equal to or larger than one half of the area of one side of the PCB.

7. The system of claim 3, wherein the backlight module comprises a lamp panel fixed in the test chamber, an illumination component mounted on the lamp panel, and a filter cover covering the illumination component.

8. The system of claim 1, wherein the camera module comprises a camera, a positioning component for positioning the illumination direction and angle of the camera, and a fixing component for fixedly mounting the camera in a spectrometer test chamber.

9. The system of claim 1, wherein the two plugs are respectively welded to two ends of the FPC transmission line, and UV glue is applied to the front and back surfaces of the welding point.

10. The system of claim 1, wherein the electrical test performed after the signal transmission module is prepared is performed under the following test conditions: the on-resistance is less than 1 ohm, the withstand voltage is more than 250V, and the insulation resistance is more than 5 megohm.

Technical Field

The invention relates to the technical field of imaging, in particular to a sample imaging system suitable for a handheld X-ray fluorescence spectrometer.

Background

At present, a handheld X-ray fluorescence spectrometer is more and more favored by customers due to the characteristics of portability and quickness, and a camera needs to be placed in the instrument to image a sample according to the position of a current detection point of the sample to be analyzed in a specific application field; however, due to the structure of the handheld device, the camera and the imaging lens of the instrument are located inside the device, the focal point is at the sample position on the surface of the shell, the focal length is small, the light source is weak, the flat cable is also long, the image signal is easily interfered, and especially, long-distance transmission can cause signal deviation, jitter, attenuation and distortion, which may cause undesirable phenomena such as image screen splash, black screen and blockage of the terminal; moreover, the camera can irradiate other devices in the instrument, so that the imaging difficulty is increased; there is therefore a need to find a solution to such problems.

Disclosure of Invention

In view of the above, the present invention provides a sample imaging system suitable for a handheld X-ray fluorescence spectrometer, which can image an analysis sample and transmit an image signal to a terminal, and solves the problems of unclear image, screen splash, screen blackness, blockage and the like caused by long-distance transmission, poor anti-interference capability of MIPI image signals, and the like, thereby realizing long-distance transmission of CMOS image signals; the sample imaging system suitable for the handheld X-ray fluorescence spectrometer comprises: the camera module is positioned in the test cavity of the spectrometer and corresponds to the window of the test cavity; the background light module is used for providing background light for a tested sample on a test cavity window so as to realize image focusing and clear imaging; the input end of the signal switching module is connected with the output end of the camera module; the input end of the signal transmission module is connected with the output end of the signal switching module; the image processing module is connected with the output end of the signal transmission module and is used for cutting and partially amplifying the image; the signal transmission module comprises an FPC transmission line, conductive cloth wrapped outside the FPC transmission line, insulating cloth wrapped outside the conductive cloth and plugs arranged at two ends of the FPC transmission line.

According to the background art of the patent, when a handheld X-ray fluorescence spectrometer detects a sample in a specific application field, a current detection point position of the sample to be analyzed needs to be observed, so that a camera needs to be placed in the instrument to image the sample; however, due to the structure of the handheld device, the flat cable is long, and image signals are easily interfered, shifted, jittered, attenuated and distorted, which may cause undesirable phenomena such as screen splash, screen blackout and blockage of images of the terminal; the sample imaging system applicable to the handheld X-ray fluorescence spectrometer disclosed by the invention defines a new application scene different from a mobile phone camera; the camera module is positioned in a testing cavity of the handheld X-ray fluorescence spectrometer, a detection sample to be shot is positioned on the surface of a window of the testing cavity, and the camera module performs image imaging on the detection sample by means of the built-in background light module; then, the image signals shot by the camera module are switched through the signal switching module, so that the transmission distance of the image signals is prolonged, and the transmission of the image signals is ensured not to be distorted; then carry out long distance transmission through signal transmission module, FPC transmission line outside wraps up one deck conductive cloth earlier and regards as the shielding layer, wraps up one deck acetate cloth as the insulating layer again, prevents that image signal from receiving electromagnetic interference for the high performance camera can carry out long distance transmission when data is big, the frame rate is high, accomplishes the collection and the processing to image signal through image processing module again at last, thereby obtains the clear image that detects the sample at the terminal.

In addition, the sample imaging system suitable for the handheld X-ray fluorescence spectrometer disclosed by the invention also has the following additional technical characteristics:

furthermore, the camera interface of the camera module is a parallel port, and the signal switching module comprises a first camera socket, a bus transceiver,The system comprises a bus buffer and a first switching socket; the input end of the first camera socket is connected with a camera interface of the camera module, the input end of the bus transceiver is correspondingly connected with an image signal bus pin and a control signal bus pin of the first camera socket, and the output end of the bus transceiver is correspondingly connected with the image signal bus pin and the control signal bus pin of the first adapter socket; the input end and the output end of the bus buffer are respectively connected with the first camera socket and the I of the first adapter socket²The pins of the C bus are correspondingly connected, and the first switching socket is connected with the input end of the signal transmission module.

Further, the first camera socket and the first patch socket adopt 24PIN FPC sockets.

Further, the chip model of the bus buffer is PCA9515B, I for camera²C bus buffering to enhance I²C, the driving capability of the bus to support long-distance transmission of signals.

Furthermore, the serial clock interface and the serial data interface at the output end of the bus buffer and the serial clock interface and the serial data interface at the input end of the bus buffer are respectively connected with an AFVDD power supply through pull-up resistors R1, R2, R3 and R4.

And the filter module is grounded, so that the stability of a voltage signal is ensured.

Furthermore, the bus transceiver comprises an image signal bus transceiver unit and a control signal bus transceiver unit, wherein the input end of the image signal bus transceiver unit is connected with the image signal bus pin of the first camera socket, and the output end of the image signal bus transceiver unit is connected with the image signal bus pin of the first patch socket, so as to perform transceiving transmission on image signals and enhance the driving capability of the image signals, so as to support long-distance transmission of the image signals; the input end of the control signal bus receiving and transmitting unit is connected with the control signal bus pin of the first camera socket, and the output end of the control signal bus receiving and transmitting unit is connected with the control signal bus pin of the first adapter socket and used for receiving, transmitting and transmitting control signals of a camera, such as clock signals, reset signals and the like, so that the driving capability of the control signals is enhanced, and long-distance transmission of the control signals is supported.

Further, the chip model of the bus transceiver is SN74ALVCH16245 DGVR.

Still further, the AFVDD power supply and the 1V5 power supply, the 2V8 power supply are grounded through a first filtering module, a second filtering module and a third filtering module respectively, the first filtering module includes two capacitors C2 and C4 connected in parallel, the second filtering module includes a capacitor C1, and the third filtering module includes two capacitors C3 and C5 connected in parallel.

Furthermore, the camera interface of the camera module is an MIPI interface, the signal transfer module comprises a transfer PCB, and a second camera socket and a second transfer socket which are integrated on the transfer PCB, the input end of the second camera socket is correspondingly connected with the MIPI interface, the output end of the second camera socket is correspondingly connected with the input end of the second transfer socket, and the output end of the second transfer socket is correspondingly connected with the signal transmission module.

Further, the second camera socket and the second adapter socket adopt 24PIN FPC sockets.

Furthermore, equal-length wiring is conducted between the MD0 pins, between the MD1 pins, between the MD2 pins, between the MD3 pins, and between the MC pins of the second camera socket and the second adaptor socket on the adaptor PCB, and the wire diameter is 4 mil.

Furthermore, the front side and the back side of the adapter PCB are respectively coated with copper and grounded, and the copper-coated area is more than or equal to one half of the area of one side of the PCB.

Equal-length wires are arranged between MD0 pins, MD1 pins, MD2 pins, MD3 pins and MC pins of the second camera socket and the second adapter socket on the adapter PCB, and the front side and the back side of the adapter PCB are respectively plated with copper in large areas and grounded so as to enhance the anti-interference capability of MIPI signals, thereby ensuring that image signal transmission is not distorted, and saving the cost because no adapter chip is used.

Further, the AF _ VDD power supply, the DVDD power supply, the DOVDD power supply and the AVDD power supply are grounded through capacitors C6, C7, C8 and C9, respectively, so as to ensure the stability of the power supplies.

Furthermore, backlight module is including fixing the lamp plate in the test intracavity, installs illumination component on the lamp plate, and install directly over illumination component and cover illumination component's filter cover.

The light filtering cover is arranged between the sample to be detected and the illuminating part to filter the light of the illuminating part, so that the phenomenon that the light is too strong to form light spots on the sample image is avoided.

Furthermore, the lighting component is an LED lamp, and the LED lamp is a particle LED lamp.

Furthermore, the camera module comprises a camera, a positioning component for positioning the irradiation direction and angle of the camera, and a fixing component for fixedly mounting the camera in the spectrometer test cavity.

Still further, the camera has a fixed focus lens or an automatic zoom lens.

Further, both of the plugs are 24PIN plugs.

Furthermore, two plugs are respectively welded at two ends of the FPC transmission line, and UV glue is arranged on the front surface and the back surface of the welding position.

Furthermore, after the signal transmission module is manufactured, an electrical test is required.

Furthermore, the test conditions of the electrical test are as follows: the on-resistance is less than 1 ohm, the withstand voltage is more than 250V, and the insulation resistance is more than 5 megohm.

Further, 24 PINs at the end part of the FPC transmission line are welded with 24 PINs of the plug in a one-to-one correspondence mode.

Furthermore, the insulating cloth is insulating acetic acid cloth.

A layer of conductive cloth is wrapped on the FPC transmission line, and then a layer of insulating acetate cloth is wrapped on the FPC transmission line, so that the image signals are prevented from being subjected to electromagnetic interference, and the long-distance transmission capability of the signals is enhanced.

Furthermore, the image processing module carries out software image processing based on an upper computer operating system, and the software calls a related API function to cut and locally amplify the image signal, so that the influence of surrounding devices on the imaging of the sample is avoided.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic diagram of a sample imaging system suitable for use in a hand-held X-ray fluorescence spectrometer according to an embodiment of the present invention;

fig. 2 is a circuit connection diagram of a signal transfer module in an embodiment of the present invention, where a camera interface is a parallel port;

fig. 3 is a circuit connection diagram of a signal transfer module in an embodiment of the present invention when a camera interface is an MIPI interface;

fig. 4 is a layout diagram of a PCB board of a signal transfer module in an embodiment of the present invention in which a camera interface is an MIPI interface; and

fig. 5 is a schematic structural diagram of a signal transmission module according to an embodiment of the present invention.

The system comprises a camera module 10, a camera 11, a positioning block 12, a fixing block 13, a background light module 20, a lighting component 21, a lamp panel 22, a filter cover 23, a signal transfer module 30, a second camera socket P1, a second transfer socket P2, a first camera socket P3, a first transfer socket P4, an image signal bus transceiver U1A, a control signal bus transceiver U1B, a bus buffer U2, a signal transmission module 40, a plug P5, an insulating acetic acid cloth 41, an image processing module 50 and a test cavity window surface 60.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout; the embodiments described below with reference to the drawings are illustrative only and should not be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "bottom", "top", "front", "rear", "inner", "outer", "lateral", "vertical", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, are used only for convenience in describing the present invention and for simplification of description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

The invention has the following conception that a sample imaging system suitable for a handheld X-ray fluorescence spectrometer is provided, and a new application scene different from a mobile phone camera is defined; the camera module is positioned in a testing cavity of the handheld X-ray fluorescence spectrometer, a detection sample to be shot is positioned on the surface of a window of the testing cavity, and the camera module performs image imaging on the detection sample by means of the built-in background light module; then, the image signals shot by the camera module are switched through the signal switching module, so that the transmission distance of the image signals is prolonged, and the transmission of the image signals is ensured not to be distorted; then carry out long distance transmission through signal transmission module, FPC transmission line outside wraps up one deck conductive cloth earlier and regards as the shielding layer, wraps up one deck acetate cloth as the insulating layer again, prevents that image signal from receiving electromagnetic interference for the high performance camera can carry out long distance transmission when data is big, the frame rate is high, accomplishes the collection and the processing to image signal through image processing module again at last, thereby obtains the clear image that detects the sample at the terminal.

The invention will now be described with reference to the accompanying drawings, in which FIG. 1 is a schematic diagram of a sample imaging system suitable for use in a hand-held X-ray fluorescence spectrometer in one embodiment of the present invention; fig. 2 is a circuit connection diagram of a signal transfer module in an embodiment of the present invention, where a camera interface is a parallel port; fig. 3 is a circuit connection diagram of a signal transfer module in an embodiment of the present invention when a camera interface is an MIPI interface; fig. 4 is a layout diagram of a PCB board of a signal transfer module in an embodiment of the present invention in which a camera interface is an MIPI interface; fig. 5 is a schematic structural diagram of a signal transmission module according to an embodiment of the present invention.

As shown in fig. 1 to 5, a sample imaging system suitable for a handheld X-ray fluorescence spectrometer according to an embodiment of the present invention includes: the camera module 10 is positioned in the test cavity of the spectrometer and corresponds to the window of the test cavity; the background light module 20 is used for providing background light for a tested sample on a test cavity window so as to realize image focusing and clear imaging; a signal switching module 30 having an input terminal connected to the output terminal of the camera module 10; the input end of the signal transmission module 40 is connected with the output end of the signal switching module 30; the image processing module 50 is connected with the output end of the signal transmission module 40 and is used for cutting and partially amplifying the image; the signal transmission module 40 includes an FPC transmission line, a conductive cloth wrapped outside the FPC transmission line, an insulating cloth wrapped outside the conductive cloth, and plugs P5 installed at both ends of the FPC transmission line.

According to the background art of the patent, when a handheld X-ray fluorescence spectrometer detects a sample in a specific application field, a current detection point position of the sample to be analyzed needs to be observed, so that a camera 11 needs to be placed in the instrument to image the sample; however, due to the structure of the handheld device, the flat cable is long, and image signals are easily interfered, shifted, jittered, attenuated and distorted, which may cause undesirable phenomena such as screen splash, screen blackout and blockage of images of the terminal; the sample imaging system applicable to the handheld X-ray fluorescence spectrometer disclosed by the invention defines a new application scene different from the mobile phone camera 11; the camera module 10 is located in a test cavity of the handheld X-ray fluorescence spectrometer, a detection sample to be shot is located on the surface 60 of a window of the test cavity, and the camera module 10 images the detection sample by means of the built-in background light module 20; then, the signal switching module 30 switches the image signals obtained by shooting by the camera module 10, so as to prolong the transmission distance of the image signals and ensure that the transmission of the image signals is not distorted; then carry out long distance transmission through signal transmission module 40, the FPC transmission line outside wraps up the electrically conductive cloth of one deck earlier and is regarded as the shielding layer, wraps up a deck acetate cloth again and regards as the insulating layer, prevents that image signal from receiving electromagnetic interference for high performance camera 11 can carry out long distance transmission when data is big, the frame rate is high, accomplishes the collection and the processing to image signal through image processing module 50 again at last, thereby obtains the clear image that detects the sample at the terminal.

In addition, the sample imaging system suitable for the handheld X-ray fluorescence spectrometer disclosed by the invention also has the following additional technical characteristics:

according to some embodiments of the present invention, the camera interface of the camera module 10 is a parallel port, and the signal relay module 30 includes a first camera socket P3, a bus transceiver, a bus buffer U2, and a first relay socket P4; the input end of the first camera socket P3 is connected to the camera interface of the camera module 10, the input end of the bus transceiver is correspondingly connected to the image signal bus pin and the control signal bus pin of the first camera socket P3, and the output end of the bus transceiver is correspondingly connected to the image signal bus pin and the control signal bus pin of the first patch socket P4; the input end and the output end of the bus buffer U2 are respectively connected with the I of the first camera socket P3 and the first patch panel P4²C bus pins are correspondingly connected, and the first patch socket P4 is connected with the input end of the signal transmission module 40.

According to one embodiment of the present invention, the first camera jack P3 and the first patch panel P4 employ 24PIN FPC jacks, as shown in fig. 2.

According to some embodiments of the present invention, the bus buffer chip model is PCA9515B, I for camera 11²C bus buffering to enhance I²C, the driving capability of the bus to support long-distance transmission of signals.

According to an embodiment of the invention, the serial clock interface and the serial data interface at the output end and the serial clock interface and the serial data interface at the input end of the bus buffer are respectively connected with an AFVDD power supply through pull-up resistors R1, R2, R3 and R4, as shown in fig. 2.

And the filter module is grounded, so that the stability of a voltage signal is ensured.

According to some embodiments of the present invention, the bus transceiver comprises an image signal bus transceiving unit U1A and a control signal bus transceiving unit U1B, wherein an input terminal of the image signal bus transceiving unit U1A is connected to an image signal bus pin of the first camera socket P3, and an output terminal thereof is connected to an image signal bus pin of the first patch socket P4, and is configured to transceive image signals, so as to enhance driving capability of the image signals, and support long-distance transmission of the image signals; the input end of the control signal bus transceiving unit U1B is connected with the control signal bus pin of the first camera socket P3, and the output end of the control signal bus transceiving unit U1B is connected with the control signal bus pin of the first patch panel P4, so that the control signal bus transceiving unit is used for transceiving and transmitting control signals such as clock and reset of the camera 11, the driving capability of the control signal is enhanced, and the long-distance transmission of the control signal is supported.

According to one embodiment of the invention, the bus transceiver has a chip model number of SN74ALVCH16245 DGVR.

According to an embodiment of the present invention, the AFVDD power supply and the 1V5 power supply and the 2V8 power supply are grounded through a first filtering module, a second filtering module and a third filtering module respectively, the first filtering module includes two capacitors C2 and C4 connected in parallel, the second filtering module includes a capacitor C1, and the third filtering module includes two capacitors C3 and C5 connected in parallel, as shown in fig. 2.

According to some embodiments of the present invention, the camera interface of the camera module 10 is an MIPI interface, the signal relay module 30 includes a relay PCB, and a second camera socket P1 and a second relay socket P2 integrated on the relay PCB, an input terminal of the second camera socket P1 is correspondingly connected to the MIPI interface, an output terminal of the second camera socket P1 is correspondingly connected to an input terminal of the second relay socket P2, and an output terminal of the second relay socket P2 is correspondingly connected to the signal transmission module 40.

According to some embodiments of the present invention, the second camera jack P1 and the second adaptor jack P2 are 24PIN FPC jacks, as shown in fig. 3.

According to some embodiments of the present invention, the MD0 pins, MD1 pins, MD2 pins, MD3 pins and MC pins of the second camera socket P1 and the second adaptor socket P2 are wired on the adaptor PCB board with equal length and a wire diameter of 4mil, as shown in fig. 4.

According to some embodiments of the present invention, the front and back sides of the adapting PCB are respectively copper-clad and grounded, and the copper-clad area is greater than or equal to one half of the area of one side of the PCB, as shown in fig. 4.

The pins P1 of the second camera and the pins P2 of the second adapter socket are distributed between MD0 pins, MD1 pins, MD2 pins, MD3 pins and MC pins on the adapter PCB in equal length, and the front side and the back side of the adapter PCB are respectively coated with copper in large area and grounded so as to enhance the anti-interference capability of MIPI signals, thereby ensuring that image signal transmission is not distorted, and saving the cost because no adapter chip is used.

According to an embodiment of the present invention, the AF _ VDD power supply, the DVDD power supply, the DOVDD power supply, and the AVDD power supply are grounded through capacitors C6, C7, C8, and C9, respectively, to ensure the stability of the power supplies, as shown in fig. 3.

According to some embodiments of the present invention, the backlight module includes a lamp panel 22 fixed in the test chamber, an illumination member 21 installed on the lamp panel 22, and a transparent filter cover 23 installed right above the illumination member 21 and covering the illumination member 21, as shown in fig. 1.

The light of the illuminating part 21 is filtered by the filter cover 23 which is arranged between the tested sample and the illuminating part 21, so that the phenomenon that the light is too strong to form a light spot on the sample image is avoided.

According to some embodiments of the invention, the illumination component 21 is an LED lamp, which is a particle LED lamp.

According to some embodiments of the present invention, the camera module comprises a camera 11, a positioning component 12 for positioning the irradiation direction and angle of the camera 11, and a fixing component 13 for fixedly mounting the camera 11 in a spectrometer test chamber, as shown in fig. 1.

According to some embodiments of the present invention, the camera 11 has a fixed focus lens or an automatic zoom lens.

According to one embodiment of the invention, both of said plugs P5 are 24PIN plugs P5, as shown in fig. 5.

According to one embodiment of the invention, two plugs P5 are respectively welded at two ends of the FPC transmission line, and 24 PINs at the end of the FPC transmission line are welded with 24 PINs of the plug P5 in a one-to-one correspondence manner (in the same-direction welding manner, namely PIN1 is connected with PIN1, and PIN2 is connected with PIN 2); and UV glue is arranged on the front surface and the back surface of the welding part of the plug P5 and the FPC transmission line.

According to some embodiments of the present invention, the signal transmission module is electrically tested after being manufactured.

According to some embodiments of the invention, the test conditions of the electrical test are: the on-resistance is less than 1 ohm, the withstand voltage is more than 250V, and the insulation resistance is more than 5 megohm.

UV glue is dotted on the front side and the back side of the welding position, and electric property test is carried out to ensure that connection is firm, so that distortion of image signal transmission is avoided.

According to one embodiment of the present invention, the insulating cloth is an insulating acetate cloth 41, as shown in fig. 1.

A layer of conductive cloth is wrapped on the FPC transmission line, and then a layer of insulating acetate cloth 41 is wrapped on the FPC transmission line, so that the image signals are prevented from being subjected to electromagnetic interference, and the long-distance transmission capacity of the signals is enhanced.

According to some embodiments of the present invention, the image processing module 50 performs software image processing based on an upper computer operating system, and the software calls a relevant API function to perform cutting and local amplification on an image signal, so as to avoid the influence of surrounding devices on the imaging of a sample.

According to one embodiment of the present invention, the length of the signal transmission module 40 is 200 mm.

Any reference to "one embodiment," "an embodiment," "example embodiment," etc., means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the invention; the schematic representations in various places in the specification do not necessarily refer to the same embodiment; further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the purview of one skilled in the art to effect such feature, structure, or characteristic in connection with other ones of the embodiments.

While specific embodiments of the invention have been described in detail with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this invention; in particular, reasonable variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the foregoing disclosure, the drawings and the appended claims without departing from the spirit of the invention; except variations and modifications in the component parts and/or arrangements, the scope of which is defined by the appended claims and equivalents thereof.