WO2014048040A1 - 光学检测仪触发装置及具有该触发装置的光学检测仪 - Google Patents

光学检测仪触发装置及具有该触发装置的光学检测仪 Download PDF

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Publication number
WO2014048040A1
WO2014048040A1 PCT/CN2012/087024 CN2012087024W WO2014048040A1 WO 2014048040 A1 WO2014048040 A1 WO 2014048040A1 CN 2012087024 W CN2012087024 W CN 2012087024W WO 2014048040 A1 WO2014048040 A1 WO 2014048040A1
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WO
WIPO (PCT)
Prior art keywords
trigger
light
optical detector
switch
trigger switch
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/CN2012/087024
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English (en)
French (fr)
Inventor
张丽
王红球
易裕民
张士新
奉华成
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.)
Tsinghua University
Nuctech Co Ltd
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Tsinghua University
Nuctech Co Ltd
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Publication date
Application filed by Tsinghua University, Nuctech Co Ltd filed Critical Tsinghua University
Publication of WO2014048040A1 publication Critical patent/WO2014048040A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/02—Details
    • G01J3/0291—Housings; Spectrometer accessories; Spatial arrangement of elements, e.g. folded path arrangements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/02—Details
    • G01J3/0202—Mechanical elements; Supports for optical elements
    • 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
    • G01N2201/00—Features of devices classified in G01N21/00
    • G01N2201/02—Mechanical
    • G01N2201/025—Mechanical control of operations
    • G01N2201/0253—Switches mounted at the casing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H01H3/16—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. for a door switch, a limit switch, a floor-levelling switch of a lift

Definitions

  • the present invention relates to the field of optical detectors, and more particularly to an optical detector triggering device and an optical detector. Background technique
  • An optical detector such as a spectrometer, is a widely used inspection device in the industry, and can be used for detecting various properties of various detection objects such as liquids, gases, bulk solids, and powders.
  • a triggering device is typically required to initiate the optical inspection process, such as triggering the laser's emission and detection module to begin receiving and processing data.
  • An object of the present invention is to provide an optical detector triggering device that has a fast triggering speed, convenient and consistent operation, and high efficiency.
  • an optical detector triggering apparatus includes: a trigger switch for initiating optical detection to emit a detection when triggered Light;
  • a hollow through-light axis for detecting light passing through the inner cavity thereof to reach the object to be tested, the light-passing axis and the trigger switch having a fixed relative position;
  • a movement trigger that is movable toward or away from the trigger switch relative to the light passing axis to cause the trigger switch to trigger or reset the trigger switch.
  • the moving trigger may include a telescopic sleeve that is sleeved on the outer wall of the light-passing shaft and is capable of sliding toward or away from the trigger switch with respect to the light-passing axis.
  • the telescopic sleeve may have an abutting portion for sliding the telescopic sleeve toward the trigger switch against the object to be tested or the container accommodating the object to be tested.
  • the moving trigger may further include a return elastic member for providing a restoring force to move the telescopic sleeve away from the trigger switch when the abutting portion is disengaged from the object to be tested or the container for receiving the object to be tested.
  • the movement trigger may further include a triggering reed that presses the triggering reed to cause the triggering reed to trigger the triggering switch when sliding toward the triggering switch.
  • a transparent window may be disposed at the light exit of the light passing shaft.
  • the optical detector triggering device may further comprise a decorative sleeve for shielding the trigger switch, the decorative sleeve being fixed around the outer sleeve of the optical detector around the telescopic sleeve.
  • the moving trigger may further include a guiding member, and an outer wall of the light passing shaft is provided with a guiding groove corresponding to the guiding member, and one end of the guiding member is embedded in the inner wall of the telescopic sleeve, and the other end is inserted.
  • the guide member is slidable in the corresponding guide groove.
  • the optical detector triggering device may further include a light-passing shaft support for fixing the light-passing shaft and a switch holder for fixing the trigger switch, the light-passing shaft support and the switch holder being opposite to the optical The outer casing of the detector remains fixed.
  • the stroke of the telescopic sleeve that causes the trigger switch to be moved can be determined by the focus position of the detection light.
  • the movement trigger may include a pallet carrying the object to be tested, and the triggering device further includes a sliding slot seat for carrying the pallet, the pallet being movable along the sliding slot seat to be carried on the pallet The measured object moves toward or away from the trigger switch.
  • the trigger switch may be fixed to the switch holder, and the light exit port of the light passing shaft for detecting the detection light may be disposed at a position of the switch holder below the trigger switch.
  • the pallet may be provided with a light blocking plate that is movable with the light exit opening of the pallet toward or away from the light passing axis.
  • the sliding slot seat may be provided with a limit switch, and the limit switch is configured to turn off the trigger switch when the light blocking plate and the trigger switch are at a predetermined distance.
  • the pallet may be provided with a test object pad or recess for accommodating the object to be tested.
  • an optical detector having any of the above-described triggers Optical detector of the device.
  • At least one aspect of the above technical solution of the present invention automatically triggers the detection operation of the optical detector and the timely suspension detection operation by moving the trigger relative to the movement of the trigger switch, thereby improving the triggering speed and efficiency of the triggering device, and reducing The complexity of small detection operations avoids losses due to errors in triggering and reset operations.
  • FIG. 1 shows a schematic perspective view of a triggering device in accordance with an embodiment of the present invention
  • Figure 2 shows a schematic side view of the triggering device shown in Figure 1;
  • Figure 3 is a schematic cross-sectional view of the triggering device shown in Figure 2 taken along line AA;
  • Figure 4 is a schematic side view of a triggering device in accordance with another embodiment of the present invention;
  • Fig. 6 schematically shows a plan view of the triggering device shown in Fig. 4. detailed description
  • FIGS 1-3 schematically illustrate an optical detector triggering device 100 in accordance with an embodiment of the present invention.
  • the triggering device 100 includes a trigger switch 1, a light passing shaft 2, and a movement trigger 3.
  • the trigger switch 1 is used to activate optical detection to emit detection light when triggered.
  • the light passing shaft 2 is hollow for supplying the detection light from the inner cavity of the light passing shaft 2 to the object to be measured during the detecting.
  • the movement trigger 3 is used to trigger or reset the trigger switch 1 by moving relative to the light-passing axis 2 toward or away from the trigger switch 1, thereby causing optical detection to be initiated or aborted.
  • the triggering device 100 controls the triggering and resetting of the triggering switch 1 by moving the movement of the trigger 3 without the need to additionally set a trigger such as a button.
  • the mobile trigger 3 includes a telescoping sleeve 31.
  • the telescopic sleeve 31 is fitted over the outer wall of the light-passing shaft 2 and is slidable towards or away from the triggering switch 1 with respect to the light-passing axis 2 .
  • the slip of the telescopic sleeve 31 toward the trigger switch 1 can be used to trigger the trigger switch 1 away from the trigger switch
  • the slip of 1 can be used to reset the trigger switch 1 and vice versa.
  • the telescopic sleeve 31 may have an abutting portion 32 that can be used to slide the telescopic sleeve 31 toward the trigger switch 1 against the object to be tested or the container that houses the object to be tested.
  • the abutting portion 32 By means of the abutting portion 32, the triggering of the telescopic sleeve 31 with respect to the trigger switch 1 can be realized by a simple action, and can also be completed together with the positioning operation of the light-passing shaft 2 and the object to be tested without additional cumbersome operations.
  • the abutting portion 32 may be disposed at the front end of the telescopic sleeve and may extend beyond the light exit end of the light passing shaft to protect the light passing shaft from collision.
  • the telescopic sleeve 31 can be provided in various shapes such as a cylindrical shape, a conical shape, a square shape, a pyramid shape, or a prism shape as needed.
  • the abutting portion 32 may also be provided in the shape of a plane, a slope, a step, a projection, or the like. In the embodiment shown in FIGS. 1-3, both the end surface of the front end of the telescopic sleeve 31 and the tapered surface of the outer wall can be used as the abutting portion 32.
  • the telescopic sleeve 31 may be moved according to other methods to trigger, for example, by means of magnetic force, electric power, or the like. Telescopic sleeve 31.
  • the abutting portion 32 is not limited to the container against the object to be tested or the object to be tested.
  • other tools may be used, even the hand of the operator is used to push the abutting portion 32 so that The telescopic sleeve 31 is moved to complete the triggering operation.
  • the inner cavity of the light-passing shaft 2 can be used for detecting light in and out, and a light-emitting port is provided at the front end of the inner cavity, so that the detection light can be emitted from the light-emitting port to reach the object to be tested, and return to the inner cavity of the light-passing shaft 2.
  • An optical element such as a focus lens or the like can also be disposed in the inner cavity of the light passing shaft 2. Of course, it is also possible not to arrange the optical element in the inner cavity of the light passing shaft 2.
  • the outer wall of the light-passing shaft 2 may be smooth, or may be provided with a shoulder, a step, a projection or a recess on the outer wall for the assembly requirements of the moving trigger 3 (e.g., the telescopic sleeve 31).
  • the light passing shaft 2 and the trigger switch 1 maintain a fixed relative position.
  • the moving trigger 3 may further include a return elastic member 4 such as a spring such as a coil spring, a butterfly spring, a wire spring, or the like.
  • the return elastic member 4 is for providing a restoring force to move the telescopic sleeve 31 away from the trigger switch 1 when the abutting portion 32 is disengaged from the object to be tested or the container for accommodating the object to be tested.
  • the return elastic member 4 is a spring provided between the rear end of the telescopic sleeve and the shoulder of the light passing shaft 2.
  • the telescopic sleeve 31 When the telescopic sleeve 31 is pressed against the trigger switch 1 (for example, by the object against it or the container accommodating the object to be tested), the telescopic sleeve 31 approaches or contacts the trigger switch 1 against the spring force of the spring to make it trigger. When the telescopic sleeve 31 is no longer pressed (for example, disconnected from the object to be tested or the container containing the object to be tested), the spring provides a restoring force to push the telescopic sleeve 31 away from the trigger switch 1 to reset it.
  • the structure of the return elastic member 4 is not limited thereto, and for example, a reed or other elastic member known in the art capable of providing a restoring force can be realized.
  • the movement trigger 3 may also include a trigger reed 33.
  • the triggering spring 33 can assist the telescopic sleeve 31 in triggering the trigger switch 1.
  • the telescopic sleeve 31 presses the triggering reed 33 when it is slid toward the triggering switch 1 to trigger the triggering switch 1 via the triggering reed 33.
  • the light passing shaft 2 is provided with a transparent window at the light exit opening.
  • the transparent window can prevent harmful contaminants such as dust or airflow from entering the inner cavity of the light-passing shaft 2, thereby causing harmful effects on the optical path, and at the same time ensuring that the detection light can be irradiated to the object to be measured through the window and returned to the light-passing axis 2 In the lumen.
  • the window can be fixed to the light-passing shaft 2 by glue bonding or screwing.
  • the triggering device 100 may also include a trim cover 5 for shielding the trigger switch 1.
  • the sleeve 5 can be attached to the outer casing 6 of the optical detector around the telescoping sleeve 31.
  • the decorative sleeve 5 may have a shape of a circle, a cone, a square, or the like.
  • the decorative cover 5 prevents objects outside the instrument from touching the trigger switch and improving the appearance of the instrument.
  • a gap can be provided between the decorative sleeve 5 and the telescopic sleeve 31, which ensures that the telescopic sleeve 31 can move smoothly along the light-passing shaft 2.
  • the gap can be set to be variable, which can be adapted to the needs of the various telescoping sleeves 31.
  • the moving trigger 3 may further include a guiding member 34.
  • the outer wall of the light transmitting shaft 2 is provided with a guiding groove 21 corresponding to the guiding member 34, and one end of the guiding member 34 is embedded in the telescopic sleeve 31. In the inner wall, the other end is inserted into the corresponding guide groove 21, and the guide member 34 is slidable in the corresponding guide groove 21.
  • the guiding member 34 cooperates with the guiding groove 21 to ensure that the telescopic sleeve 31 does not fall off in a relaxed state (ie, a reset state that does not abut against the object to be measured or is pressed by other objects), and can guide the telescopic sleeve 31 relative to the through hole.
  • the optical axis 2 slides in a desired direction.
  • the guide groove 21 may be opened in the axial direction of the light-passing shaft 2, and may be a straight groove or an annular groove.
  • the stroke of the telescopic sleeve 31 for moving the trigger switch 1 can be determined by the length of the guide groove 21.
  • the guide member 34 may be a guide pin, a guide pin, a guide shaft or a guide block, or the like.
  • the positioning operation and the triggering operation of the optical detector with respect to the object to be tested can be completed in one action.
  • an optical detector it often requires a specific position of the detecting head and the measured object to improve the accuracy of the measurement.
  • optical detectors often need to focus the detection light on the measurement point of the object to be measured to obtain a good signal-to-noise ratio. This requires that the distance between the focusing element (such as the lens) of the optical detector and the object to be tested satisfies the requirement for the focus position of the detected light. If the distance between the two is too far or too close, the detection light may not be focused. Insufficient signal to noise ratio and detection Degree drops.
  • the relative position of the telescopic sleeve 31 and the light passing shaft 2 and the stroke of the telescopic sleeve 31 can be utilized to determine the distance between the optical element (for example, the focus lens) in the detection optical path and the object to be tested.
  • the stroke of the telescopic sleeve 31 for causing the trigger switch 1 to be triggered is determined by the focus position of the detection light.
  • the distance between the optical element in the detection optical path and the object to be tested is also required to satisfy the focus position, so that the optical detection can be performed smoothly in time.
  • the optical detector does not need to perform a separate positioning operation before using a separate triggering method to complete the triggering. Therefore, the structure and operation of the optical detector are simplified.
  • the triggering device 100 may further comprise a light-passing shaft holder 72 for fixing the light-passing shaft 2 and a switch holder 71 for fixing the trigger switch 1, the light-passing shaft holder 72 and the switch holder 71 being optical with respect to the optical
  • the outer casing 6 of the detector remains fixed.
  • the switch holder 71 can be mounted on the light-passing shaft support 72 together with the light-passing shaft 2.
  • the through-axis support 72 can in turn be mounted on the optical path bracket 8.
  • the optical path support 8 can also support other optical components in the detection optical path. By means of the optical path support 8 and the light-passing shaft support 72, the light-passing shaft 2 can maintain a proper positional relationship with other optical elements in the detection optical path.
  • the trigger switch 1 can be a trip switch, a proximity switch, a photoelectric switch, or the like.
  • the movement trigger 3 can adopt a trigger mode that is in contact with or non-contact (e.g., proximity, etc.) according to the type of the trigger switch 1.
  • the telescopic sleeve 31, the return elastic member 4, the light transmission shaft 2, the guide member 34, the decorative sleeve 5, the switch holder 71, and the light transmission shaft holder 72 may be metal or non-metal.
  • the triggering device 100' may also include a trigger switch 1 ', a light-passing axis 2', and a movement trigger 3'.
  • the movement trigger 3' includes a pallet 31' carrying the object to be tested.
  • the triggering device 100' may also include a chute 4' that carries the pallet 3''. The pallet 3 ⁇ is movable along the chute 4' to move the object to be carried on the pallet 31' toward or away from the trigger switch ⁇ .
  • the trigger switch ⁇ can be fixed to the switch holder 71'.
  • the light exiting opening of the light transmitting shaft 2' for emitting the detection light may be provided at the position of the switch holder 7A below the trigger switch .
  • the switch holder 71' can be fixed to the housing 6' of the optical detector, and the light-passing shaft 2' can be fixedly coupled to the carriage seat 4' and held in a fixed position with the switch holder 7''. relationship.
  • the pallet 31' can be located below the switch support 71' and move perpendicular to the trigger switch ⁇ .
  • the invention is not limited thereto, for example, the pallet 3 ⁇ may also be located above or on the side of the switch holder 71' Party.
  • the pallet 31' can trigger the trigger switch ⁇ through a trigger portion (such as a bump, a step, a transmittance, or a region where the reflectance locally changes) provided thereon, or can also pass the measured object carried thereon Trigger on the trigger switch ⁇ .
  • the trigger switch ⁇ may also be a stroke switch, a proximity switch, a photoelectric switch, or the like.
  • the movement trigger 3' can also adopt a triggering mode that is in contact with or non-contact (such as proximity, etc.) with the trigger switch ⁇ depending on the type of the trigger switch ⁇ .
  • the pallet 31' may be provided with a light barrier 32'.
  • the light blocking plate 32' is movable along with the tray 31' toward or away from the light exit opening of the light passing shaft 2'.
  • the light blocking plate 32' can move to a position close to the light exit of the trigger switch ⁇ and the light passing shaft 2' when the optical detection is not performed to cover them to close the detection space, which can save space and prevent the trigger switch from being accidentally collision.
  • the light blocking plate 32' may also be arranged to block the light beam emitted from the light exiting opening of the light passing shaft 2' to prevent the light beam from damaging the operator's eyes.
  • the light barrier 32' can be placed at the end of the pallet 3 (as shown in Figure 6) to save space as much as possible. However, this is not required, and the light blocking plate 32' may be disposed at other positions of the pallet 31'.
  • a limit switch 5 ′ can also be provided on the sliding seat 4 ′, the limit switch 5 ′ can The trigger switch 1' is turned off when the light blocking plate 32' is at a predetermined distance from the trigger switch ( (for example, the predetermined distance is greater than the triggering distance of the trigger switch )).
  • the limit switch 5' can be excited by the pallet 31', and the position of the limit switch 5' can be set such that when the light barrier 32' moves with the pallet 31' to the vicinity of the trigger switch The portion of the plate 31' in the chute 4' activates the limit switch 5' to turn off the trigger switch 1'.
  • the limit switch 5' can be supported by the limit switch bracket 5'.
  • the tray 31' may be provided with a test object pad or recess for accommodating the object to be tested.
  • the position of the object to be tested or the recess on the pallet 3 ⁇ can be set according to the triggering distance of the trigger switch ⁇ .
  • the light-passing shaft 2' can also be fixed on the light-passing shaft support 72', and the light-passing shaft support 72' can be fixed to the optical path bracket 8'.
  • the optical path bracket 8' can be combined with the sliding seat 4' is integrated into one.
  • the light blocking plate 32', the pallet 31', the outer casing 3', the chute seat 4', the limit switch bracket 6', the switch holder 71', the test object pad 9', the light passing shaft 2 ', the light shaft support 72' or the light path bracket 8' may be metal or non-metal.
  • the trigger switch 1 , ⁇ may be a contact trigger switch, or may be a non-contact trigger switch, specifically, for example, a travel switch, a proximity switch, a mechanical switch, and a light. Electric switch and so on.
  • the present invention also provides an optical detector having the above-described triggering device 100, 100'.
  • the triggering device 100, 100' is in a stroke coupling and control relationship with a detection executing component (e.g., a laser control circuit, a signal collecting and processing module, etc.) in the optical detector.
  • a detection executing component e.g., a laser control circuit, a signal collecting and processing module, etc.
  • these detection execution components activate the lasers to emit detection light and initiate various operations required by the signal collection and processing module to perform optical detection.
  • the optical detector can perform optical detection operations conveniently, quickly and accurately, which is particularly advantageous in applications where the detection workload is high and the detection efficiency is high.
  • the optical detector can be, for example, a spectrometer or other instrument that utilizes a beam of light for detection.

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  • General Physics & Mathematics (AREA)
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Abstract

一种光学检测仪触发装置以及具有该触发装置的光学检测仪。该光学检测仪触发装置包括：触发开关（1），用于在受到触发时启动光学检测以发出检测光；中空的通光轴（2），用于供检测光从其内腔穿过而到达被测物，通光轴与触发开关具有固定的相对位置；和移动触发器（3），其能够相对于通光轴接近或远离触发开关移动以使触发开关触发或是触发开关复位。该光学检测仪触发装置通过移动触发器相对于触发开关的移动来自动触发光学检测仪的检测操作和及时中止检测操作，可提高触发装置的触发速度和效率。

Description

光学检测仪触发装置及具有该触发装置的光学检测仪 本申请要求 2012年 9月 26日递交的、 申请号为 201210364138.0、 发明名 称为 "光学检测仪触发装置及具有该触发装置的光学检测仪" 的中国专利申请 的优先权， 其通过引用整体并入本文。 技术领域
本发明涉及光学检测仪领域， 尤其涉及一种光学检测仪触发装置及光学检 测仪。 背景技术
光学检测仪， 例如光谱仪， 是在工业中广泛使用的检测设备， 其可以用于 对液体、 气体、 大块固体、 粉末等各种检测对象的多种性质进行检测。 而采用 光学检测仪对于物品进行检测时， 通常会需要一种触发装置来启动光学检测过 程， 例如触发激光的发射和检测模块开始接收和处理数据。
在现有的光学检测仪中， 主要采用光纤探头和按钮开关或按键来控制激光 的发射， 这种方式需要对每次检测单独进行手工触发， 对于一些检测工作量大， 检测速度要求快的场合并不适用。
为此， 需要提供一种触发速度快、 操作方便连贯、 效率高的触发装置。 发明内容
本发明的目的在于提供一种触发速度快、 操作方便连贯、 效率高的光学检 测仪触发装置。
为了实现上述发明目的， 本发明的技术方案通过以下方式来实现： 根据本发明的一个方面， 提供一种光学检测仪触发装置， 包括： 触发开关， 用于在受到触发时启动光学检测以发出检测光；
中空的通光轴， 用于供检测光从其内腔穿过而到达被测物， 所述通光轴与 触发开关具有固定的相对位置； 和
移动触发器， 其能够相对于通光轴接近或远离触发开关移动以使触发开关 触发或使触发开关复位。 进一步地， 所述移动触发器可以包括伸縮套， 所述伸縮套套装在通光轴的 外壁上并能够相对于通光轴朝向或远离触发开关滑移。
更进一步地， 所述伸縮套可以具有抵靠部， 所述抵靠部用于抵靠被测物或 容装被测物的容器而使伸縮套朝向触发开关滑移。
再进一步地， 所述移动触发器还可以包括复位弹性件， 用于提供回复力以 使伸縮套在抵靠部脱离所述被测物或容装被测物的容器时远离触发开关移动。
具体地， 所述移动触发器还可以包括触发簧片， 所述伸縮套在朝向触发开 关滑移时压迫所述触发簧片以使触发簧片对触发开关进行触发。
具体地， 所述通光轴的出光口处可以设置有透明窗口。
具体地，所述光学检测仪触发装置还可以包括用于遮蔽触发开关的装饰套， 所述装饰套围绕所述伸縮套固定于光学检测仪的外壳上。
具体地， 所述移动触发器还可以包括导向件， 所述通光轴的外壁设有与所 述导向件对应的导向槽， 所述导向件的一端嵌于伸縮套的内壁中， 另一端插入 与之对应的导向槽中， 且所述导向件能够在与之对应的导向槽中滑动。
具体地，所述光学检测仪触发装置还可以包括用于固定通光轴的通光轴支 座和用于固定触发开关的开关支座， 所述通光轴支座和开关支座相对于光学检 测仪的外壳保持固定。
具体地，所述伸縮套使触发开关触发所移动的行程可以由检测光的聚焦位 置确定。
进一步地， 所述移动触发器可以包括承载被测物的托板， 所述触发装置还 包括承载托板的滑槽座， 所述托板能够沿滑槽座移动以使被承载于托板上的被 测物朝向或远离触发开关移动。
更进一步地， 所述触发开关可以固定于开关支座， 用于使检测光射出的通 光轴的出光口可以设于所述开关支座在触发开关下方的位置处。
再进一步地， 所述托板可以设置有挡光板， 所述挡光板能够随托板朝向或 远离通光轴的出光口移动。
具体地， 所述滑槽座可以设有限位开关， 所述限位开关用于在挡光板与触 发开关处于预定距离时关断触发开关。
具体地， 托板可以设置有用于容纳被测物的被测物垫或凹陷。
根据本发明的另一方面， 提供一种具有如上所述的任一种光学检测仪触发 装置的光学检测仪。
本发明的上述技术方案中的至少一个方面通过移动触发器相对于触发开关 的移动来自动触发光学检测仪的检测操作和及时中止检测操作， 既可以提高触 发装置的触发速度和效率， 又可以减小检测操作的复杂性， 避免由于触发和复 位操作的错误导致损失。 附图说明
图 1示出根据本发明的一实施例的触发装置的示意性立体图；
图 2示出如图 1所示的触发装置的示意性侧视图；
图 3示意性地示出如图 2所示的触发装置沿 A-A线截得的部分剖视图； 图 4示出根据本发明的另一实施例的触发装置的示意性的侧视图； 图 5示出如图 4所示的触发装置的沿 A'-A'线截得的示意性正向剖视图； 和
图 6示意性地示出如图 4所示的触发装置的俯视图。 具体实施方式
下面通过实施例， 并结合附图， 对本发明的技术方案作进一步具体的说明。 在说明书中， 相同或相似的附图标号表示相同或相似的部件。 下述参照附图对 本发明实施方式的说明旨在对本发明的总体发明构思进行解释， 而不应当理解 为对本发明的一种限制。
图 1-3示意性地示出了根据本发明的一实施例的光学检测仪触发装置 100。 该触发装置 100包括触发开关 1、通光轴 2和移动触发器 3。触发开关 1用于在 受到触发时启动光学检测以发出检测光。 通光轴 2是中空的， 用于在检测过程 中供检测光从通光轴 2的内腔穿过而到达被测物。 移动触发器 3用于通过相对 于通光轴 2接近或远离触发开关 1的移动来使触发开关 1触发或使触发开关 1 复位， 从而使光学检测启动或中止。 触发装置 100通过移动触发器 3的移动直 接地控制触发开关 1的触发与复位， 而不需要额外设置如按钮等触发器。
在如图 1-3所示的实施例中， 移动触发器 3包括伸縮套 31。 所述伸縮套 31 套装在通光轴 2的外壁上并能够相对于通光轴 2朝向或远离触发开关 1滑移。 伸縮套 31朝向触发开关 1的滑移可以用于使触发开关 1触发，而远离触发开关 1的滑移可以用于使触发开关 1复位， 反之亦然。 作为示例， 所述伸縮套 31可 以具有抵靠部 32， 所述抵靠部 32可以用于抵靠被测物或容装被测物的容器而 使伸縮套 31朝向触发开关 1滑移。 借助于抵靠部 32， 伸縮套 31对于触发开关 1 的触发可以由一简单的动作来实现， 还可以与通光轴 2和被测物的定位操作 一并完成， 而不需要额外的繁琐操作。 作为示例， 该抵靠部 32可以设置在伸縮 套的前端， 且可以延伸超出通光轴的出光口端以保护通光轴不受碰撞。 伸縮套 31可以根据需要设置成圆柱形、 圆锥形、 方形、 棱锥形或棱柱形等多种形状。 抵靠部 32也可以设置成平面、 斜坡、 台阶、 凸起等形状。 在图 1-3示出的实施 例中， 伸縮套 31前端的端面和外壁的锥面都可以用作抵靠部 32。
然而， 由被测物或容装被测物的容器抵靠抵靠部 32进行触发并不是必需 的， 还可以根据其他方式来移动伸縮套 31进行触发， 比如借助于磁力、 电力等 方式来移动伸縮套 31。 而在具体实际操作中， 抵靠部 32也不仅限于抵靠被测 物或容装被测物的容器， 例如还可以采用其他工具， 甚至用操作者的手， 来推 动抵靠部 32以使伸縮套 31移动， 从而完成触发操作。
通光轴 2的内腔可以供检测光线出入， 在内腔的前端设有出光口， 使检测 光能够从出光口射出到达被测物， 并返回到通光轴 2的内腔中。 通光轴 2的内 腔中也可以设置光学元件， 如聚焦透镜等。 当然， 也可以不将光学元件设置在 通光轴 2的内腔中。 通光轴 2的外壁可以是平滑的， 也可以出于与移动触发器 3 (例如伸縮套 31 ) 的装配要求而在外壁上设置有轴肩、 台阶、 凸起或凹陷。 通光轴 2与触发开关 1保持固定的相对位置。
在一示例中， 移动触发器 3还可以包括复位弹性件 4， 例如弹簧， 如螺旋 弹簧、蝶形弹簧和线弹簧等。复位弹性件 4用于提供回复力以使伸縮套 31在抵 靠部 32脱离所述被测物或容装被测物的容器时远离触发开关 1移动。在图 1示 出的示例中， 复位弹性件 4为设置在伸縮套的后端与通光轴 2的轴肩之间的弹 簧。 当伸縮套 31受到朝向触发开关 1的压迫（例如受到抵靠其的被测物或容装 被测物的容器的压迫）时， 伸縮套 31克服弹簧的弹力接近或接触触发开关 1以 使之触发。而当伸縮套 31不再被压迫（例如与被测物或容装被测物的容器脱开） 时， 弹簧提供回复力推动伸縮套 31远离触发开关 1以使其复位。然而， 复位弹 性件 4的结构不限于此， 例如， 采用簧片或者其它本领域中已知的能够提供回 复力的弹性构件也可以实现。 作为一示例， 移动触发器 3还可以包括触发簧片 33。 该触发簧片 33可以 帮助伸縮套 31对触发开关 1进行触发。 伸縮套 31在朝触发开关 1滑移时压迫 所述触发簧片 33以通过触发簧片 33对触发开关 1进行触发。 借助于触发簧片 33对触发开关 1进行触发， 而不是由伸縮套 31直接地对触发开关 1进行触发， 可以提高触发准确性和防止触发开关 1遭受过大冲击。
在一示例中， 通光轴 2在出光口处设置有透明窗口。 该透明窗口可以防止 灰尘等污染物或气流进入到通光轴 2的内腔中对光路造成有害影响， 同时又可 以保证检测光能够穿过该窗口照射到被测物和返回到通光轴 2的内腔中。 该窗 口可以通过胶粘接或螺纹压紧联接固定于通光轴 2。
作为示例， 触发装置 100还可以包括用于遮蔽触发开关 1的装饰套 5。 装 饰套 5可以围绕伸縮套 31固定于光学检测仪的外壳 6上。装饰套 5可以具有圆 形、 锥形、 方形等形状。 装饰套 5可以防止仪器外部的物体触碰触发开关和改 善仪器的外观。装饰套 5和伸縮套 31之间可以设有间隙， 该间隙可以保证伸縮 套 31能够沿通光轴 2流畅的运动。该间隙可以设置成可变的， 这可以适应于各 种不同的伸縮套 31的需要。
在一示例中， 移动触发器 3还可以包括导向件 34， 相应地， 通光轴 2的外 壁设有与导向件 34对应的导向槽 21， 所述导向件 34的一端嵌于伸縮套 31的 内壁中， 另一端插入与之对应的导向槽 21中， 且所述导向件 34能够在与之对 应的导向槽 21中滑动。 导向件 34与导向槽 21相配合， 既保证伸縮套 31在放 松状态 （即不与被测物抵靠或被其它物体压迫的复位状态） 下不会脱落， 又能 够引导伸縮套 31相对于通光轴 2沿着期望的方向滑动。 导向槽 21可以沿通光 轴 2的轴向开设， 可以是直槽或环形槽。伸縮套 31为使触发开关 1触发而移动 的行程可以由导向槽 21的长度确定。 导向件 34可以是导向钉、 导向销、 导向 轴或导向块等。
采用上述移动触发器 3的结构，可以将光学检测仪相对于被测物的定位操 作和触发操作以一个动作完成。 对于光学检测仪， 其往往要求检测头与被测物 具有特定的位置， 以提高测量的准确性。 例如， 光学检测仪往往需要将检测光 聚焦在被测物的测量点上以获得良好的信噪比。 这就要求光学检测仪的聚焦元 件 （如透镜） 与被测物之间的距离满足对于检测光的聚焦位置的要求， 如果两 者距离太远或太近， 都可能导致检测光无法聚焦， 而造成信噪比不足和检测精 度下降。而采用上述移动触发器 3的结构， 可以利用伸縮套 31和通光轴 2的相 对位置以及伸縮套 31的行程来确定检测光路中的光学元件（例如聚焦透镜）与 被测物之间的距离。在一示例中， 伸縮套 31为使触发开关 1触发所移动的行程 由检测光的聚焦位置确定。 这样， 在伸縮套 31将触发开关 1触发的同时， 也使 检测光路中的光学元件与被测物之间具有满足聚焦位置要求的距离， 以使得光 学检测可以及时顺利地进行。 于是， 光学检测仪不需要在先完成单独的定位操 作之后， 再利用单独的触发方式来完成触发。 因此， 光学检测仪的结构和操作 都得以简化。
作为示例， 触发装置 100还可以包括用于固定通光轴 2的通光轴支座 72 和用于固定触发开关 1的开关支座 71， 通光轴支座 72和开关支座 71相对于光 学检测仪的外壳 6保持固定。在一示例中， 开关支座 71可以连同通光轴 2—起 安装在通光轴支座 72上。 通光轴支座 72又可以安装在光路支架 8上。 光路支 架 8还可以支撑检测光路中的其它光学元件。 借助于光路支架 8和通光轴支座 72， 通光轴 2可以与检测光路中的其它光学元件保持合适的位置关系。
在上述各种实施例中， 触发开关 1可以是行程开关、 接近式开关、 光电开 关等。 移动触发器 3可以根据触发开关 1类型的不同而采用与触发开关 1接触 或非接触 （如接近等） 的触发方式。
在上述实施例中， 伸縮套 31、 复位弹性件 4、 通光轴 2、 导向件 34、 装饰 套 5、 开关支座 71、 通光轴支座 72可以是金属， 也可以是非金属。
图 4-6示出根据本发明另一实施例的触发装置 100'。 在该实施例中， 触发 装置 100'也可以包括触发开关 1 '、 通光轴 2'和移动触发器 3'。 其中， 移动触发 器 3'包括承载被测物的托板 31 '。触发装置 100'还可以包括承载托板 3Γ的滑槽 座 4'。所述托板 3Γ能够沿滑槽座 4'移动以使被承载于托板 31 '上的被测物朝向 或远离触发开关 Γ移动。
在一示例中， 触发开关 Γ可以固定于开关支座 71 '。 用于使检测光射出的 通光轴 2'的出光口可以设于所述开关支座 7Γ上在触发开关 Γ下方的位置处。 在更具体的示例中，开关支座 71 '可以固定于光学检测仪的外壳 6'上，通光轴 2' 可以与滑槽座 4'固定连接， 并保持与开关支座 7Γ的固定的位置关系。
在一示例中，托板 31 '可以位于开关支座 71 '的下方，且垂直于触发开关 Γ 运动。 但本发明不限于此， 例如， 托板 3Γ也可以位于开关支座 71 '的上方或侧 方。 托板 31 '可以通过在其上设置的触发部（如凸起、 台阶、透射率或反射率发 生局部变化的区域等） 对触发开关 Γ进行触发， 或者也可以通过其上承载的被 测物对触发开关 Γ进行触发。 在本实施例中， 与图 1-3示出的实施例相同， 触 发开关 Γ也可以是行程开关、 接近式开关、 光电开关等。 移动触发器 3'也可以 根据触发开关 Γ类型的不同而采用与触发开关 Γ接触或非接触 （如接近等） 的 触发方式。
在一示例中， 托板 31 '可以设置有挡光板 32'。 所述挡光板 32'能够随托板 31 '朝向或远离通光轴 2'的出光口移动。 所述挡光板 32'能够在光学检测不进行 时移动至贴近触发开关 Γ和通光轴 2'的出光口的位置以将它们遮住从而关闭检 测空间， 这可以节省空间和防止触发开关被意外碰撞。另外， 挡光板 32'还可以 设置成遮挡从通光轴 2'的出光口射出的光束， 以避免光束伤害操作者的眼睛。 挡光板 32'可以设置在托板 3Γ的端部 （如图 6所示） 以尽可能地节省空间。 但 这不是必需的， 挡光板 32'也可以设置在托板 31 '的其它位置处。
为防止挡光板 32'在移动至触发开关 Γ附近时导致触发开关 Γ的误触发， 作为一示例， 还可以在滑槽座 4'上设有限位开关 5'， 所述限位开关 5'能够在挡 光板 32'与触发开关 Γ处于预定距离 （例如该预定距离大于触发开关 Γ的触发 距离） 时关断触发开关 1'。 在更具体的示例中， 限位开关 5'可以由托板 31 '激 发， 限位开关 5'的位置可以设置成， 当挡光板 32'随托板 31 '移动至触发开关 Γ 附近之前， 托板 31 '处在滑槽座 4'中的部分将限位开关 5'激发以关断触发开关 1'。 在一示例中， 限位开关 5'可以由限位开关支架 5Γ支撑。
在上述实施例中， 托板 31 '上可以设置有用于容纳被测物的被测物垫或凹 陷。 可以根据触发开关 Γ的触发距离来设置被测物垫或凹陷在托板 3Γ上的位 置。
在上述实施例中， 通光轴 2'也可以固定于通光轴支座 72'上， 而通光轴支 座 72'又可以固定于光路支架 8'， 光路支架 8'可以与滑槽座 4'连成一体。
在上述实施例中， 挡光板 32'、 托板 31'、 外壳 3'、 滑槽座 4'、 限位开关 支架 6'、开关支座 71'、被检物垫 9'、通光轴 2'、通光轴支座 72'或光路支架 8'， 可以是金属， 也可以是非金属。
在上述各种实施例中， 触发开关 1、 Γ可以是接触式触发开关， 也可以是 非接触式触发开关， 具体地可以是例如行程开关、 接近式开关、 机械开关、 光 电开关等等。
本发明还提供了一种具有上述触发装置 100、 100'的光学检测仪。在该光学 检测仪中， 触发装置 100、 100'与光学检测仪中的检测执行部件（如激光器控制 电路、 信号收集和处理模块等） 行程联接和控制关系。 当触发装置 100、 100' 被移动触发器 3、 3'触发时，这些检测执行部件启动激光器发出检测光并启动信 号收集和处理模块执行光学检测所需的各种操作。 借助于上述触发装置 100、 100'， 光学检测仪能够方便、 快捷和准确地进行光学检测操作， 这在检测工作 量大和检测效率要求高的应用场合中尤其具有优势。 该光学检测仪例如可以是 光谱仪或其它利用光束进行检测的仪器。
虽然结合附图对本发明进行了说明， 但是附图中公开的实施例旨在对本发 明优选实施方式进行示例性说明， 而不能理解为对本发明的一种限制。
虽然本发明总体构思的一些实施例已被显示和说明， 本领域普通技术人员 将理解， 在不背离本总体发明构思的原则和精神的情况下， 可对这些实施例做 出改变， 本发明的范围以权利要求和它们的等同物限定。

Claims

权 利 要 求
1、 一种光学检测仪触发装置， 包括：
触发开关， 用于在受到触发时启动光学检测以发出检测光；
中空的通光轴， 用于供检测光从其内腔穿过而到达被测物， 所述通光轴与 触发开关具有固定的相对位置； 和
移动触发器， 其能够相对于通光轴接近或远离触发开关移动以使触发开关 触发或使触发开关复位。
2、根据权利要求 1所述的光学检测仪触发装置， 其中， 所述移动触发器包 括伸縮套， 所述伸縮套套装在通光轴的外壁上并能够相对于通光轴朝向或远离 触发开关滑移。
3、根据权利要求 2所述的光学检测仪触发装置， 其中， 所述伸縮套具有抵 靠部， 所述抵靠部用于抵靠被测物或容装被测物的容器而使伸縮套朝向触发开 关滑移。
4、根据权利要求 3所述的光学检测仪触发装置， 其中， 所述移动触发器还 包括复位弹性件， 用于提供回复力以使伸縮套在抵靠部脱离所述被测物或容装 被测物的容器时远离触发开关移动。
5、 根据权利要求 1-4中任一项所述的光学检测仪触发装置， 其中， 所述移 动触发器还包括触发簧片， 所述伸縮套在朝向触发开关滑移时压迫所述触发簧 片以使触发簧片对触发开关进行触发。
6、 根据权利要求 1-4中任一项所述的光学检测仪触发装置， 其中， 所述通 光轴的出光口处设置有透明窗口。
7、 根据权利要求 1-4中任一项所述的光学检测仪触发装置， 还包括用于遮 蔽触发开关的装饰套，所述装饰套围绕所述伸縮套固定于光学检测仪的外壳上。
8、 根据权利要求 1-4 中任一项所述的光学检测仪触发装置， 其中， 所述 移动触发器还包括导向件，所述通光轴的外壁设有与所述导向件对应的导向槽， 所述导向件的一端嵌于伸縮套的内壁中， 另一端插入与之对应的导向槽中， 且 所述导向件能够在与之对应的导向槽中滑动。
9、 根据权利要求 1-4 中任一项所述的光学检测仪触发装置， 还包括用于 固定通光轴的通光轴支座和用于固定触发开关的开关支座， 所述通光轴支座和 开关支座相对于光学检测仪的外壳保持固定。
10、 根据权利要求 1-4中任一项所述的光学检测仪触发装置， 其中， 所述 伸縮套使触发开关触发所移动的行程由检测光的聚焦位置确定。
11、 根据权利要求 1所述的光学检测仪触发装置， 其中， 所述移动触发器 包括承载被测物的托板， 所述触发装置还包括承载托板的滑槽座， 所述托板能 够沿滑槽座移动以使被承载于托板上的被测物朝向或远离触发开关移动。
12、 根据权利要求 11所述的光学检测仪触发装置， 其中， 所述触发开关 固定于开关支座， 用于使检测光射出的通光轴的出光口设于所述开关支座在触 发开关下方的位置处。
13、 根据权利要求 12所述的光学检测仪触发装置， 其中， 所述托板设置 有挡光板， 所述挡光板能够随托板朝向或远离通光轴的出光口移动。
14、 根据权利要求 13所述的光学检测仪触发装置， 其中， 所述滑槽座设 有限位开关， 所述限位开关用于在挡光板与触发开关处于预定距离时关断触发 开关。
15、 根据权利要求 11-14中任一项所述的光学检测仪触发装置， 其中， 托 板设置有用于容纳被测物的被测物垫或凹陷。
16、 一种具有根据权利要求 1-15 中任一项所述的光学检测仪触发装置的 光学检测仪。
PCT/CN2012/087024 2012-09-26 2012-12-20 光学检测仪触发装置及具有该触发装置的光学检测仪 Ceased WO2014048040A1 (zh)

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