水环境监测装置

Abstract

本申请提供了水环境监测装置，目的在于至少解决或缓解杂散光的影响，提高检测的准确性。其包括：光源；检测区，其由水环境监测装置的壳体限定出，检测区能够容纳液体；第一探测器，其用于接收光源进入检测区的液体后产生的散射光和 / 或荧光；第一光学部件，其设置在第一探测器的接收面的前侧，第一光学部件设置有能够吸光或反射光的内壁以能够减少或消除进入第一探测器的光线中的杂散光；并且 / 或者，还包括第二光学部件，其包括圆台形凹槽，光源发出的光经由第二光学部件进入检测区，圆台形凹槽朝向检测区的一面大于圆台形凹槽朝向光源的一面，第二光学部件用于将经过非检测区作用的光导出第一探测器的接收区外。

Claims

1. A water environment monitoring device characterized by comprising: include: light source; The detection area is defined by the housing of the water environment monitoring device and is capable of containing liquid; A first detector is used to receive scattered light and / or fluorescence generated after the light source enters the liquid in the detection area; A first optical component is disposed on the front side of the receiving surface of the first detector. This first optical component has an inner wall capable of absorbing or reflecting light to reduce or eliminate stray light in the light entering the first detector. The stray light is light deviating from a first direction outside a set angle range, where the first direction is perpendicular to the receiving surface. And / or It also includes a second optical component, which includes a frustum-shaped groove, through which light emitted by the light source enters the detection area. The side of the frustum-shaped groove facing the detection area is larger than the side of the frustum-shaped groove facing the light source. The second optical component is used to guide light that has passed through the non-detection area out of the receiving area of ​​the first detector.

2. The water environment monitoring apparatus according to claim 1, characterized by The first optical component includes: a cylindrical inner wall, wherein the ratio of the axial length to the maximum radial length of the cylindrical inner wall is 5 to 10, for absorbing the stray light, or The inner wall of the first optical component has a radially inwardly extending reflective shoulder.

3. The water environment monitoring apparatus according to claim 1, characterized by The angle between the generatrix of the frustum-shaped groove and the bottom surface facing the detection area is 45° to 85°.

4. The water environment monitoring apparatus according to claim 1, characterized by Also includes: The second detector is used to detect the intensity of light; A first optical lens (510) is disposed between the light source and the detection area. This first optical lens (510) is a lens that can both transmit and reflect light. The light emitted by the light source can be reflected by the first optical lens to the second detector, and transmitted through the first optical lens to the detection area.

5. The water environment monitoring apparatus according to claim 1, characterized by It also includes a third detector for receiving transmitted light passing through the detection area.

6. The water environment monitoring apparatus according to claim 5, characterized by The third detector is equipped with two receiving areas. The water environment monitoring device also includes: A first optical lens is disposed between the light source and the detection area. The first optical lens is a lens that can both transmit and reflect light. The light emitted by the light source is transmitted through the first optical lens to the detection area and then enters a receiving area. A second optical lens is disposed between the light source and the third detector. This second optical lens is reflective; light emitted from the light source, after being reflected by the first and second optical lenses, bypasses the detection area and enters another receiving area. Alternatively, the third detector may have two receiving areas. The water environment monitoring device also includes a light-transmitting sealed part adjacent to the detection area. A portion of the light emitted by the light source passes through the sealed part without passing through the liquid and enters one of the receiving areas. Another portion of the light emitted by the light source passes through the liquid in the detection area and enters another receiving area.

7. The water environment monitoring apparatus according to claim 5, wherein Also includes: A first reflector module is configured such that light emitted from the light source passes through the liquid in the detection area at least twice under the reflection of the first reflector module before entering the third detector.

8. The water environment monitoring apparatus according to any one of claims 1 to 7, characterized by The receiving surface of the first detector is parallel or perpendicular to the light output axis of the light source.

9. The water environment monitoring apparatus according to any one of claims 1 to 7, characterized by The light source includes a first light source, a second light source, and a third optical lens. The third optical lens is a lens that can both transmit and reflect light. The light emitted by the first light source transmitted by the third optical lens and the light emitted by the second light source reflected by the third optical lens are combined to form the light emitted by the light source.

10. The water environment monitoring apparatus according to claim 5 or 7, characterized by A third optical component is provided on the front side of the third detector to reduce or eliminate some of the light that is deflected in the second direction after passing through the liquid in the detection area. The second direction is perpendicular to the receiving surface of the third detector. The third optical component includes a cylindrical inner wall with a light-absorbing coating and / or an inner wall with a radially inwardly extending reflective shoulder.

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