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WO2019204955A1 - Dispositif de détection optique et procédé de détection - Google Patents

Dispositif de détection optique et procédé de détection Download PDF

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Publication number
WO2019204955A1
WO2019204955A1 PCT/CN2018/084015 CN2018084015W WO2019204955A1 WO 2019204955 A1 WO2019204955 A1 WO 2019204955A1 CN 2018084015 W CN2018084015 W CN 2018084015W WO 2019204955 A1 WO2019204955 A1 WO 2019204955A1
Authority
WO
WIPO (PCT)
Prior art keywords
pressure sensor
detected
device body
detecting
detection
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2018/084015
Other languages
English (en)
Chinese (zh)
Inventor
骆磊
牟涛涛
迟雪
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cloudminds Shenzhen Holdings Co Ltd
Original Assignee
Cloudminds Shenzhen Holdings Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Cloudminds Shenzhen Holdings Co Ltd filed Critical Cloudminds Shenzhen Holdings Co Ltd
Priority to CN201880001109.3A priority Critical patent/CN108780036B/zh
Priority to PCT/CN2018/084015 priority patent/WO2019204955A1/fr
Publication of WO2019204955A1 publication Critical patent/WO2019204955A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/01—Arrangements or apparatus for facilitating the optical investigation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
    • G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
    • G01N21/65—Raman scattering

Definitions

  • the present application relates to the field of optical detection technologies, and in particular, to an optical detection device and a detection method.
  • the current professional optical substance testing equipment is mostly contact type detection, such as Raman spectroscopy. Since the focus of the lens on the optical detecting device is fixed, the laser has a fixed focal length, so as long as the substance is placed in the focus position. Test. However, due to the user's own operation, the hand is unstable, or the focus control is not in place, so that the detection result of the substance is greatly affected. Therefore, many detection devices currently use a convex probe structure such that the optical focus is located at the foremost end of the convex probe, that is, when the substance to be tested is placed on the probe, the substance is located at the focus position.
  • the inventors have found that the convex structure on the existing optical detecting device enables the material to be located at the optical focus position.
  • the untrained user or the first-time tester still has many times.
  • the substance cannot be accurately placed in the focus position.
  • the detection laser emission is selected first, then the substance is moved to the focus position, or the substance is removed after the detection is not finished, etc., which may cause the detection letter. Noise ratio reduction or even detection of error occurs.
  • a technical problem to be solved in some embodiments of the present application is to provide an optical detecting device and a detecting method for solving the problem that the substance to be detected cannot be accurately placed in the process of detecting a substance using the optical detecting device.
  • An embodiment of the present application provides an optical detecting apparatus, including: a device body, a detecting probe, and a pressure sensor.
  • the pressure sensor is disposed on the detecting probe, the detecting probe is aligned with the light entrance and exit of the device body, and the pressure sensor establishes communication with the device body.
  • the pressure sensor is configured to detect the pressure value of the detecting probe and transmit the pressure value to the main body of the device; the main body of the device is configured to obtain the pressure value transmitted by the pressure sensor, and determine whether there is a substance to be detected according to the pressure value, and The detection process is initiated after determining that the object to be tested is placed.
  • An embodiment of the present application further provides a detecting method, which is applied to the optical detecting device in the above embodiment, comprising: a pressure sensor transmitting the detected pressure value of the detecting detecting probe to the device body; and the device body determining whether the pressure value is based on the pressure value There is a substance to be detected; the main body of the device determines that there is a substance to be detected, and then starts the detection process.
  • a pressure sensor is disposed on the detecting probe, so that the device body can know whether the detected object is placed on the detecting probe through the pressure value transmitted by the pressure sensor, and is determined to be After the placed object to be detected, the detection is started, and the phenomenon that the position of the object to be detected is inaccurate due to human factors is affected to affect the detection result.
  • the device body can judge the condition of the object to be detected according to the pressure value, The user is required to place the object to be tested according to the experience of use, whereby even an untrained user or a person who uses it for the first time can quickly and easily use the optical detecting device, thereby improving the user's operating experience.
  • FIG. 1 is a schematic structural view of an optical detecting device in a first embodiment of the present application
  • FIG. 2 is a schematic structural view of an optical detecting device in a second embodiment of the present application.
  • FIG. 3 is a flow chart of a detecting method in a third embodiment of the present application.
  • FIG. 4 is a flow chart of a detecting method in a fourth embodiment of the present application.
  • a first embodiment of the present application relates to an optical detecting apparatus including: an apparatus main body 10, a detecting probe 20, and a pressure sensor 30. As shown in FIG. 1, a pressure sensor 30 is disposed on the detecting probe 20, and the detecting probe 20 is aligned with the apparatus. a light entrance and exit of the main body 10 (not shown), and the pressure sensor 30 establishes a communication connection with the device body 10;
  • the pressure sensor 30 is configured to detect the pressure value received by the detecting probe 20 and transmit the pressure value to the device body 10; the device body 10 is configured to acquire the pressure value transmitted by the pressure sensor 30, and determine whether there is a placed to be detected according to the pressure value. And start the detection process after determining that the object to be tested is placed.
  • the detecting probe 20 is provided with a convex portion at a position for contacting the object to be detected; wherein the pressure sensor 30 is used for detecting the pressure value received by the convex portion.
  • the pressure sensor 30 is used for detecting the pressure value received by the convex portion.
  • the contact optical detecting device that is the focus position of the detecting probe is taken as an example.
  • the pressure sensor can be set at the focus position. On the component, the pressure sensor can sense the pressure change as long as the object to be detected is placed.
  • the pressure sensor disposed on the convex portion is an annular pressure sensor, and a conversion circuit is disposed on the detection probe 20, the conversion circuit is electrically connected to the pressure sensor 30, and is communicably connected with the device body 10; the conversion circuit is a pressure sensor.
  • the output signal of 30 is converted into a voltage value, and the voltage value is transmitted to the apparatus main body 10.
  • the conversion circuit of the annular pressure sensor enables the main body of the device to know the pressure distribution of the annular portion of the detecting probe according to the pressure value transmitted by the annular pressure sensor, and to know whether the object to be detected is placed at the focus position.
  • the process of determining, by the device body 10, the placed object to be detected is: determining whether the pressure value is greater than or equal to a preset threshold value, and if so, determining that the object to be detected is placed.
  • the value of the preset threshold value that needs to be set for the actual detection may be updated, and the preset threshold value may be different due to different quality of different objects to be detected, for example, the detection quality is relatively low to be detected.
  • the preset threshold value can be set to 2
  • the pressure sensor detects that the pressure value of the convex portion is greater than 2
  • the apparatus body can determine that the object to be detected is placed on the detecting probe according to the pressure value not being 2
  • the preset threshold value can be set to 5
  • the pressure sensor detects that the pressure value of the convex portion is greater than 5.
  • the main body of the device can determine that the object to be detected is placed on the detecting probe according to the pressure value. This is only an example, and does not limit the value of the preset threshold.
  • whether the detection ends by the preset signal-to-noise ratio or the detection duration may be determined, for example, acquiring spectral data of the object to be detected after the detection starts, and calculating a signal-to-noise ratio, when the calculated signal-to-noise ratio is less than or When the preset signal-to-noise ratio is equal to the completion of the detection process, or the detection time is recorded after the start of the detection, when the detection time is greater than or equal to the preset detection duration, the detection process is completed. Determining the completion of the detection process is not limited to the above-mentioned manner, and is merely illustrative here.
  • the device body is used to: determine that the acquired pressure value is greater than Or equal to the preset threshold value being less than the preset threshold value, saving the acquired spectral data or the detected detection duration of the record, and issuing a prompt that the detection has not been completed; if it is determined within the preset duration, the acquired pressure value is greater than or If it is equal to the preset threshold, the acquired spectral data is extracted and the detection is continued.
  • the detection process is to collect the spectral data of the object to be detected multiple times, when the detection interruption occurs, the currently acquired spectral data is saved, and after subsequent determination to continue the detection, if necessary, the last time may be discarded.
  • the collected spectral data and continue to collect the spectral data of the analyte until the number of times the spectrum of the collected material is determined to meet the number of times the spectrum of the detected substance is required, indicates that the detection is completed.
  • the spectral data of the last collected spectral data is incomplete due to the interruption of the detection.
  • the spectral data collected last time is discarded, and the number of times the spectrum is collected is increased once after the detection is continued. In order to ensure that the complete spectral data of the object to be detected can be obtained.
  • the spectral data includes at least one of a substance spectrum and a reflection spectrum.
  • the detection timing is also suspended, and the subsequent recovery detection continues to count until the detection duration reaches the preset detection duration, and then the detection ends.
  • the basis for determining the end of the detection is not limited to the above-mentioned detection duration or preset signal-to-noise ratio. If the detection is interrupted due to the change of the position of the object to be detected during the detection process, the detection is determined after the detection is resumed. The basis for the end depends on the specific material spectral data collection strategy, which is not limited here.
  • a pressure sensor is disposed on the detecting probe, so that the device body can know whether there is a placed object to be detected on the detecting probe through the pressure value transmitted by the pressure sensor, and after determining the placed object to be detected.
  • the detection starts, which avoids the phenomenon that the position of the object to be detected is inaccurate due to human factors affecting the detection result.
  • the main body of the device can judge the condition of the object to be detected according to the pressure value, and the user does not need to use the experience according to the experience.
  • the object to be tested is placed, whereby even an untrained user or a person who uses it for the first time can quickly and easily use the optical detecting device, thereby improving the user's operating experience.
  • the second embodiment of the present application relates to an optical detecting apparatus, and the second embodiment is substantially the same as the first embodiment, and the main difference is that the setting position of the pressure sensor is changed in the second embodiment, and its structure is as follows.
  • Figure 2 shows.
  • the pressure sensor 30 is disposed at the junction of the detection probe 20 and the apparatus body 10, and the pressure sensor 30 can be used to detect the total pressure value that the entire detection probe 20 is subjected to. It should be noted that, since the pressure sensor 30 is disposed at the connection between the detecting probe 20 and the device body 10, the pressure value of the detecting probe 20 at a certain point cannot be specifically determined, but the pressure sensor 30 can determine whether the object to be detected and the detecting are based on the pressure value. Probe contact.
  • the apparatus main body 10 can determine whether the object to be detected is placed at the focus position according to the pressure value detected by the pressure sensor 30. .
  • the detecting probe can also set the pressure sensor at other positions as long as the pressure value of the detecting probe can be obtained, and the specific position of the pressure sensor setting is not limited here.
  • a pressure sensor is provided at the connection between the detecting probe and the main body of the device, for example, a single pressure sensor, since the pressure sensor can directly feed back the acquired pressure value to the device body, there is no need to design a conversion circuit.
  • the detection probe can be a simple metal or plastic part with a simple structure.
  • the pressure sensor is disposed at the connection between the detecting probe and the device body, so that no additional circuit needs to be designed on the detecting probe, which simplifies the structure of the detecting probe and reduces the cost.
  • the object to be detected is placed at a focus position.
  • the object to be detected is placed at the focus position of the front end of the detecting probe. If the pressure sensor is disposed at the front end of the detecting probe, the object to be detected is in direct contact with the pressure sensor, otherwise, the object to be detected is The front end of the test probe is in direct contact.
  • the third embodiment of the present application relates to a detection method, which is applied to the optical detection device according to the first or second embodiment.
  • the specific implementation process is as shown in FIG. 3, and includes:
  • Step 301 The pressure sensor transmits the detected pressure value of the detecting probe to the device body.
  • a conversion circuit is needed, and the conversion circuit converts the signal output by the pressure sensor into a voltage value; the conversion circuit transmits the voltage value to the device body.
  • the pressure sensor directly transmits the acquired pressure value to the main body of the device, and the conversion circuit can be set and adjusted according to the type of the pressure sensor, and no limitation is made here. .
  • Step 302 The device body determines whether there is a placed object to be detected according to the pressure value.
  • the device body determines whether the pressure value is greater than or equal to a preset threshold; if so, the device body determines that the object to be detected is placed.
  • Step 303 The device body starts the detection process after determining that the object to be detected is placed.
  • the present embodiment is an embodiment of the method corresponding to the first embodiment, and the present embodiment can be implemented in cooperation with the first embodiment.
  • the related technical details mentioned in the first embodiment are still effective in the present embodiment, and are not described herein again in order to reduce repetition. Accordingly, the related art details mentioned in the present embodiment can also be applied to the first embodiment.
  • the fourth embodiment of the present application relates to a detection method, and the fourth embodiment is substantially the same as the third embodiment.
  • the main difference is that the processing method for detecting interruption occurs in the detection process is further included in the embodiment, as shown in FIG. 4 . Shown.
  • the detection interruption that may occur is after the start of the detection process, that is, after the step 303 of the third embodiment. Therefore, the steps 301 to 303 are not described in this embodiment, and only the steps after the step 303 are added. step.
  • Step 401 If the device body determines that the acquired pressure value changes from greater than or equal to the preset threshold value to less than the preset threshold value.
  • Step 402 The device body saves the obtained spectral data or the detected detection duration and issues a prompt that the detection has not been completed.
  • Step 403 If the device body determines that the acquired force value is greater than or equal to the preset threshold value within a preset duration.
  • Step 404 The device body extracts the acquired spectral data to continue the detection.
  • This embodiment is an embodiment of the method corresponding to the above-mentioned optical detecting device.
  • the technical details mentioned in the above embodiments are still applicable in this embodiment, and are not described herein again.
  • a fifth embodiment of the present application is directed to a computer readable storage medium, which is a computer readable storage medium having stored therein computer instructions that enable a computer to perform the present application The detection method involved in the third or fourth method embodiment.
  • the display method in the above embodiment is completed by a program instructing related hardware, and the program is stored in a storage medium, and includes a plurality of instructions for making a device (may be It is a single chip, a chip, etc. or a processor that performs all or part of the steps of the methods described in various embodiments of the present application.
  • the foregoing storage medium includes: a USB flash drive, a mobile hard disk, a read-only memory (ROM), and a random access memory (RAM, Random-Access).
  • RAM random access memory

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  • Biochemistry (AREA)
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Abstract

L'invention concerne un dispositif de détection optique, comprenant : un corps de dispositif (10), une sonde de détection (20) et un capteur de pression (30). Le capteur de pression (30) est disposé sur la sonde de détection (20) ; la sonde de détection (20) est alignée avec une sortie/entrée de lumière du corps de dispositif (10) ; le capteur de pression (30) établit une connexion de communication avec le corps de dispositif (10) ; le capteur de pression (30) est conçu pour détecter une valeur de pression appliquée à la sonde de détection (20) et transmettre la valeur de pression au corps de dispositif (10) ; le corps de dispositif (10) est conçu pour obtenir la valeur de pression transmise par le capteur de pression (30), déterminer s'il existe un objet placé à détecter en fonction de la valeur de pression, et démarrer le processus de détection après avoir déterminé que l'objet placé à détecter existe. L'invention concerne également un procédé de détection optique. Le dispositif de détection optique et le procédé de détection optique peuvent résoudre le problème selon lequel un matériau à détecter ne peut pas être placé dans le processus de détection d'un matériau en utilisant le dispositif de détection optique.
PCT/CN2018/084015 2018-04-23 2018-04-23 Dispositif de détection optique et procédé de détection Ceased WO2019204955A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201880001109.3A CN108780036B (zh) 2018-04-23 2018-04-23 一种光学检测设备及检测方法
PCT/CN2018/084015 WO2019204955A1 (fr) 2018-04-23 2018-04-23 Dispositif de détection optique et procédé de détection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2018/084015 WO2019204955A1 (fr) 2018-04-23 2018-04-23 Dispositif de détection optique et procédé de détection

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WO (1) WO2019204955A1 (fr)

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DE4444459C1 (de) * 1994-12-14 1996-02-29 Jenoptik Technologie Gmbh Anordnung zur automatischen Bestimmung der Andruckkraft bei Augendruckuntersuchungen
CN1158239A (zh) * 1996-08-01 1997-09-03 合肥恒星工贸公司 智能袖珍压平式眼压计
US6413214B1 (en) * 1997-08-22 2002-07-02 Paul S. Yang Applanating tonometers
JP2004157042A (ja) * 2002-11-07 2004-06-03 Shimadzu Corp 光学測定用圧力装置
CN102813501A (zh) * 2012-08-06 2012-12-12 淮南师范学院 动态眼压测量装置及控制探头与眼球共轴的方法
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