Monitoring device

Abstract

The invention provides a monitoring device. The monitoring device comprises a window seat, a light source assembly, a first light path seat, a light path switching device, a first sensor and a second sensor. The window base is located at the bottom of the monitoring device, a monitoring area for liquid to be detected to flow through or be filled is arranged at the bottom of the window base, and a reference area is arranged in the window base. The first optical path seat is arranged in the window seat, and a first optical lens and a second optical lens are arranged in the first optical path seat. The light path switching device is configured to be capable of switching between blocking the detection light from entering the monitoring area and blocking the reference light from entering the reference area. Scattering and / or fluorescence generated after the detection light enters the monitoring area is configured to enter the first sensor. The detection light transmitted through the monitoring zone and the reference light are configured to enter the second sensor. The incident direction of the incident light faces downwards, and the receiving end of the first sensor faces downwards, so that the incident light enters the first sensor and the second sensor after at least undergoing downward and horizontal propagation.

Description

Technical Field

[0001] This application relates to the field of environmental monitoring, and particularly to monitoring devices. Background Art

[0002] Spectrometry has advantages such as high sensitivity and no need for reagents, and has been widely used in the field of water quality detection. However, limited by the principle, spectral detection based on absorption spectra requires the optical path to be completely immersed in water. This poses no problem for relatively deep monitoring scenarios, such as rivers with a certain water depth, drainage outlets, and pipe wells. But when it comes to relatively shallow water bodies, or scenarios where the water depth fluctuates greatly and there are shallower water bodies, the optical path cannot be completely immersed in water, which will affect the measurement results.

[0003] Therefore, there is an urgent need to develop a water environment monitoring device suitable for shallow water to meet the low water level water quality monitoring requirements. Summary of the Invention

[0004] To solve or alleviate at least one problem mentioned in the background art, this application provides a monitoring device.

[0005] The monitoring device provided by the embodiments of this application includes:

[0006] A window seat, which is located at the bottom of the monitoring device, and a groove with an opening facing downwards is provided at the bottom of the window seat. The groove is formed into a monitoring area through which the liquid to be measured can flow or be filled. A reference area is provided in the window seat, and the reference area is located above the monitoring area;

[0007] A light source assembly, located at the top of the window seat, for providing incident light;

[0008] A first optical path seat disposed in the window seat. A first optical lens and a second optical lens are provided in the first optical path seat. The first optical path seat is configured such that the incident light can be reflected by the first optical lens and bypass the monitoring area and enter the reference area as reference light, and the incident light can enter the monitoring area as detection light after being reflected by the second optical lens;

[0009] An optical path switching device, which is configured to be able to switch between blocking the detection light from entering the monitoring area and blocking the reference light from entering the reference area;

[0010] A first sensor, located at the top of the window seat, and the scattering and / or fluorescence generated after the detection light enters the monitoring area are configured to enter the first sensor;

[0011] A second sensor, located at the top of the window seat, and the detection light and the reference light passing through the monitoring area are configured to enter the second sensor,

[0012] The incident direction of the incident light is downward, and the receiving end of the first sensor is downward, such that the incident light enters the first sensor and the second sensor after at least experiencing downward and horizontal propagation.

[0013] In at least one embodiment, the receiving end of the second sensor is downward, and the incident light enters the first sensor and the second sensor along a U-shaped optical path; and / or, the first sensor is configured to be able to receive the reference light, the monitoring device includes a second optical path seat disposed in the window seat, a reference area is formed in the second optical path seat, a third optical lens is disposed in the reference area, and the second optical path seat is configured to:

[0014] Part of the reference light can be reflected by the third optical lens and enter the first sensor.

[0015] The scattered light and / or fluorescence generated after the detection light passes through the monitoring area can pass through the third optical lens and enter the first sensor.

[0016] The second optical path seat is located above the monitoring area.

[0017] In at least one embodiment, the optical path switching device includes a driving mechanism, the driving mechanism is disposed in the second optical path seat, the third optical lens is a quartz sheet or a dichroic mirror, and / or

[0018] The first optical lens is a quartz sheet or a dichroic mirror, and the second optical lens is a reflector.

[0019] In at least one embodiment, the monitoring device includes a third optical path seat disposed in the window seat, a fourth optical lens and a fifth optical lens are disposed in the third optical path seat, and the third optical path seat is configured to:

[0020] The reference light passes through the reference area and is reflected by the fourth optical lens and enters the second sensor.

[0021] The detection light passes through the monitoring area, is reflected by the fifth optical lens, and enters the second sensor.

[0022] In at least one embodiment, the monitoring device further includes a main control component, the main control component is located above the third optical path seat, the fourth optical lens is a quartz sheet or a dichroic mirror, the fifth optical lens is a reflector, and / or

[0023] The first optical path seat and the third optical path seat are located on both sides of the reference area in the horizontal direction, and a first protection part and a second protection part are respectively arranged on the side walls of the first optical path seat and the third optical path seat away from the reference area.

[0024] In at least one embodiment, the monitoring device includes:

[0025] A third optical path seat, in which a fourth optical lens is arranged,

[0026] Part of the reference light can enter the second sensor after being reflected by the fourth optical lens.

[0027] In at least one embodiment, the optical path switching device includes:

[0028] An occlusion sheet, a chute is arranged on the first optical path seat, and the occlusion sheet is slidably arranged in the chute;

[0029] A driving device, the driving device can be controlled to drive the occlusion sheet, so that the occlusion sheet occludes the detection light or the reference light.

[0030] In at least one embodiment, a window sheet is arranged on the light-transmitting window inside the window seat communicating with the monitoring area, and the monitoring device further includes a cleaning module, and the cleaning module includes:

[0031] A rotating output shaft, the axis of rotation of which is parallel to the height direction of the monitoring device;

[0032] A cleaning brush handle, one end of the cleaning brush handle is connected to the rotating output shaft;

[0033] A cleaning brush head, the cleaning brush head is connected to the other end of the cleaning brush handle, and driven by the rotating output shaft, the cleaning brush head can clean the window sheet,

[0034] Or, the cleaning module includes:

[0035] A cleaning brush head, a cleaning brush handle, the cleaning brush handle can be controlled to rotate along its own axis, and the axis is parallel to the direction of the detection light when passing through the monitoring area;

[0036] The cleaning brush head is connected to the cleaning brush handle, and driven by the cleaning brush handle, the cleaning brush head can clean the window sheet.

[0037] In at least one embodiment, the monitoring device includes a monitoring device body, and the width W1 of the monitoring device body is greater than or equal to its thickness W2.

[0038] In at least one embodiment, a beam splitting film and a filter film are arranged on the receiving end of the first sensor from the inside to the outside. The beam splitting film can split scattered light and / or fluorescence, and the filter film can filter out the light directly emitted by the light source assembly and / or interfering light. The filter film covers at least a partial area of the beam splitting film.

[0039] In this application, the structure and optical path of the monitoring device are redesigned. The positions of the monitoring area, the light source assembly, the sensor, etc. are all adjusted. The monitoring area of the monitoring device provided in this application is set at the bottom, and the light source assembly and the sensor are both arranged above the monitoring area, so that the detection light enters the monitoring area in the horizontal direction, which can meet the in-situ measurement requirements of shallow water levels. In addition, the side walls on both sides of the groove can play a certain role in blocking ambient light and prevent ambient light from entering the monitoring area and affecting the monitoring results. By setting the optical path switching device and the first optical path seat, this application meets the control detection requirements of the detection light and the reference light, can eliminate or reduce the measurement errors caused by structural aging, and at the same time can monitor the water quality based on a variety of spectral information, realizing multi-parameter measurement and improving the monitoring accuracy. Description of the Drawings

[0040] Figure 1 Shows a structural block diagram of a monitoring device known to the inventor and the monitoring device provided in this application.

[0041] Figure 2 Shows a cross-sectional view of the monitoring device according to an embodiment of this application.

[0042] Figure 3 Shows an axonometric view of the first optical path seat and the optical path switching device of the monitoring device according to an embodiment of this application.

[0043] Figure 4 Shows Figure 3 A cross-sectional view of the first optical path seat and the optical path switching device in

[0044] Figure 5 Shows an axonometric view of the first optical path seat and the shielding sheet of the monitoring device according to an embodiment of this application, and the reference optical path is blocked by the shielding sheet.

[0045] Figure 6 Shows Figure 5 A cross-sectional view of the first optical path seat and the shielding sheet in

[0046] Figure 7 Shows an axonometric view of the drive mechanism of the optical path switching device and the second optical path seat of the monitoring device according to an embodiment of this application. Only the top structure of the second optical path seat is shown.

[0047] Figure 8 Shows a cross-sectional view of the third optical path seat of the monitoring device according to an embodiment of this application.

[0048] Figure 9 Shows a cross-sectional view of a light source assembly according to an embodiment of the present application.

[0049] Figure 10 Shows an axonometric view of a monitoring device body and a cleaning module according to an embodiment of the present application.

[0050] Figure 11 Shows an axonometric view of a monitoring device body and a cleaning module according to another embodiment of the present application.

[0051] Description of Reference Numerals

[0052] 100 Window seat

[0053] 110 Monitoring area

[0054] 120 Reference area

[0055] 121 First window piece

[0056] 122 Second window piece

[0057] 123 Third window piece

[0058] 200 Light source assembly

[0059] 201 Incident optical path seat

[0060] 202 Light source

[0061] 203 Lens

[0062] 204 Seal

[0063] 300 First optical path seat

[0064] 301 First optical lens

[0065] 302 Second optical lens

[0066] 310 Slide groove

[0067] 400 Optical path switching device

[0068] 410 Shading piece

[0069] 411 Light transmission hole

[0070] 412 Slide groove for swing rod

[0071] 420 Driving device

[0072] 421 Driving mechanism

[0073] 422 Swing rod

[0074] 423 Slide block

[0075] 430 Limit device

[0076] 500 Second optical path base

[0077] 501 Third optical lens

[0078] 502 First sensor

[0079] 600 Third optical path base

[0080] 601 Fourth optical lens

[0081] 602 Fifth optical lens

[0082] 603 Second sensor

[0083] 700 Cleaning module

[0084] 710 Rotating output shaft

[0085] 720 Cleaning brush handle

[0086] 730 Cleaning brush head

[0087] 810 Light source

[0088] 820 Monitoring area

[0089] 830 Sensor

[0090] 840 Water body

[0091] 850 Monitoring area

[0092] 860 Sensor

[0093] 870 Light source

[0094] 901 First protection part

[0095] 902 Second protection part

[0096] 910 Main control component

[0097] 920 Housing

[0098] 930 Connection end

[0099] 940 Interface board

[0100] 950 Monitoring device body Specific implementation mode

[0101] The exemplary embodiments of the present application will be described below with reference to the accompanying drawings. It should be understood that these specific descriptions are only used to teach those skilled in the art how to implement the present application, rather than to exhaust all feasible ways of the present application, nor to limit the scope of the present application.

[0102] As Figure 1 shown in the structure on the left, a monitoring device known to the inventor includes three parts: a light source 810, a monitoring area 820, and a sensor 830. As shown by the arrow, the light emitted by the light source 810 passes through the monitoring area 820 and then enters the sensor 830. Water body information in the monitoring area 820 can be obtained by, for example, spectroscopic detection. However, when the water body 840 is relatively shallow, the monitoring area 820 may not be completely submerged in the water body 840, resulting in measurement errors.

[0103] An embodiment of the present application provides a monitoring device. As Figure 1 shown on the right, it can change the optical path of the detection light and the positions of the structures, set the monitoring area 850 at the bottom of the monitoring device, and correspondingly set the sensor 860 and the light source 870 at the upper part, thereby realizing the measurement of shallow water levels.

[0104] More specifically, referring to Figure 2 and Figure 3 , the monitoring device may include a window seat 100, a light source assembly 200, a first optical path seat 300, an optical path switching device 400, a first sensor 502, and a second sensor 603.

[0105] The window seat 100 may be located at the bottom of the monitoring device, and a groove with an opening facing down is provided at the bottom of the window seat 100. The groove is formed into a monitoring area 110 that can allow the liquid to be measured to flow through or fill. The groove may be formed into a groove that penetrates the window seat 100 in the width direction. A reference area 120 may also be provided in the window seat 100, and the reference area 120 is located above the monitoring area 110. When the measured liquid is non-flowing, for example, located in a container, when the monitoring device is placed in the container for measurement, the liquid will fill the monitoring area. Of course, the liquid to be measured does not have to fill the monitoring area 110 completely, and the filling height can reach the height required for detection.

[0106] The window seat 100 can be used as a mounting base point for other components. For example, other components can be installed in the window seat 100 in a plug-in form or installed on the window seat 100. The specific positional relationship will be introduced later.

[0107] The light source assembly 200 can be hermetically connected to the first optical path seat 300 (introduced later), and the light source assembly 200 is used to provide incident light. The light source assembly 200 can be disposed in the window seat 100 and located at the top of the window seat 100.

[0108] Referring to Figure Figure 2and Figure 3 , a first optical lens 301 and a second optical lens 302 are provided in the first optical path seat 300, and the first optical path seat 300 is configured such that: the incident light can be reflected by the first optical lens 301, and bypass the monitoring area 110 and enter the reference area 120 as a reference light. In addition, the incident light can be incident on the monitoring area 110 as a detection light after being reflected by the second optical lens 302. Exemplarily, the incident light can be transmitted through the first optical lens 301 and then reflected by the second optical lens 302. Exemplarily, a light guiding channel can also be provided between the first optical lens and the inner wall of the first optical path seat 300, so that the incident light can be transmitted through and then reflected by the second optical lens 302.

[0109] For example, the first optical lens 301 may be a quartz plate or a dichroic mirror. The quartz plate may be a quartz plate with a coating that can realize reflection and transmission functions. The second optical lens 302 may be a reflector. The first optical lens 301 is located between the second optical lens 302 and the light source assembly 200, that is, between Figure 2 In the figure, the light source assembly 200, the first optical lens 301 and the second optical lens 302 can be arranged in sequence from top to bottom.

[0110] The optical path switching device 400 is configured to switch between blocking the detection light and blocking the reference light. The specific switching process will be described later. The reference light can eliminate the measurement error caused by device aging (for example, light attenuation emitted by the light source, which will be described later). The optical path switching device can make the sensor measure the detection light and the reference light in a time-sharing manner, thereby eliminating the measurement error.

[0111] The first sensor 502 may be located at the top of the window seat 100, and the scattered light and / or the fluorescent light generated after the detection light enters the monitoring area 110 is configured to enter the first sensor 502. Preferably, the reference light may also be configured to enter the first sensor 502. That is, the first sensor 502 is configured to receive the reference light and the scattered light and / or the fluorescent light.

[0112] The second sensor 603 may be located on the top of the window seat 100 , and the detection light and the reference light passing through the monitoring area 110 are configured to enter the second sensor 603 .

[0113] Further, the incident direction of the incident light can be set to face downward, the receiving end of the first sensor 502 can be set to face downward, and the receiving end of the second sensor 603 can be set to face downward or horizontally (not shown in the figure), so that the incident light enters the first sensor 502 and the second sensor 603 after at least experiencing downward and horizontal propagation. When the receiving ends of the first sensor 502 and the second sensor 603 are both facing downward, the incident light can enter the first sensor 502 and the second sensor 603 respectively along the U-shaped optical path.

[0114] It should be understood that the measurement scenario has special requirements for the volume of the monitoring device. For example, when measuring relatively shallow water bodies underground, it is required that the size of the monitoring device in the horizontal direction is small. For Figure 1 the left structure shown, although it can also achieve the purpose of submerging the monitoring area 110 into the water body after being placed horizontally, it will obviously increase the size of the monitoring device in the horizontal direction and cannot meet the actual measurement requirements. This application continues the common long-strip design style of the monitoring device, sets the optical path in a U shape, and arranges each component in or on the window seat 100. The structure is compact, does not increase the size in the horizontal direction, and sets the monitoring area 110 at the bottom, which can meet the monitoring requirements in various installation environments. At the same time, such a design can prevent stray light in the environment from entering the monitoring area and interfering with the measurement.

[0115] It should be understood that in addition to being applied to shallow water, the monitoring device provided by this application can of course be applied to various deep-water scenarios.

[0116] See Figure 3 、 Figure 4 , the optical path switching device 400 may include a shielding sheet 410 and a driving device 420. The first optical path seat 300 is provided with a sliding groove 310, and the shielding sheet 410 is slidably arranged in the sliding groove 310. The driving device 420 can be controlled to drive the shielding sheet 410, so that the shielding sheet 410 switches between shielding the detection light from entering the monitoring area 110 and shielding the reference light from entering the reference area 120.

[0117] For example, see Figure 5 、 Figure 6 , a light-transmitting hole 411 may also be provided on the shielding sheet 410. The light-transmitting hole 411 can be aligned with the reference optical path of the first optical path seat 300, so that the shielding sheet 410 blocks the detection optical path. See Figure 5 、 Figure 6 , when the shielding sheet 410 is pulled out, the shielding sheet 410 blocks the reference optical path and does not block (exposes) the detection optical path.

[0118] More specifically, see Figure 3 、 Figure 4 , the driving device 420 may include a driving mechanism 421 and a swing rod 422. The driving mechanism 421 can be a motor or a rotary electromagnet, etc., and can output power through a rotating shaft. One end of the swing rod 422 can be connected to the rotating shaft of the driving mechanism 421 to realize swinging. The other end of the swing rod 422 can be fixedly provided with a slider 423 (see Figure 7) The light-blocking sheet 410 may include a chute 412 for the swing rod, and the slider 423 is disposed in the chute 412 for the swing rod. Exemplarily, the extending direction of the chute 412 for the swing rod is perpendicular to the moving direction of the light-blocking sheet 410. After the swing rod 422 swings, the slider 423 can drive the light-blocking sheet 410 to move through the chute 412 for the swing rod.

[0119] See Figure 7 , the optical path switching device 400 may further include a limiting device 430. After the swing rod 422 swings, it can abut against the limiting device 430 to limit the swing amplitude of the swing rod 422 and prevent the light-blocking sheet 410 from being drawn out too far.

[0120] See Figure 2 , the monitoring device may include a second optical path seat 500 disposed in the window seat 100. A reference area 120 is formed in the second optical path seat 500, and a third optical lens 501 is disposed in the reference area 120. The second optical path seat 500 is configured such that the reference light can be reflected by the third optical lens 501 and enter the first sensor 502; the scattered light or fluorescence generated by the detection light passing through the monitoring area 110 can pass through the third optical lens 501 and enter the first sensor 502.

[0121] Exemplarily, the third optical lens 501 may be a quartz sheet or a dichroic mirror. The first sensor 502 may be a quantum dot sensor. The second optical path seat 500 may be located above the monitoring area 110.

[0122] Further, a beam splitting film and a filter film (the filter film is closer to the monitoring area 110) are disposed on the receiving end of the first sensor 502 from the inside to the outside. The beam splitting film can split the scattered light and / or fluorescence, and the filter film is used to filter out (absorb) the light directly emitted by the light source and / or interference light, so that only the scattered light and / or fluorescence generated by the light emitted by the light source passing through the liquid to be measured are received in the area of the first sensor 502 covered by the filter film. The design of integrating the filter film on the receiving end can reduce the influence of stray light on the sensor. The beam splitting film may be a quantum dot beam splitting film, and the filter film may be a quantum dot filter film. The filter film may cover a partial area of the beam splitting film. That is, the receiving end of the first sensor 502 can be divided into multiple areas. When the filter film covers all areas, there are areas with a filtering function and areas without a filtering function on the filter film. The areas without a filtering function are equivalent to not having a filter film provided, which can facilitate the reception of the reference light.

[0123] See Figure 7 , the optical path switching device 400 (especially the driving mechanism 421 therein) may be disposed on the second optical path seat 500. More specifically, the optical path switching device 400 may be located above the first optical path seat 300 and connected to the mounting structure at the top of the second optical path seat 500.

[0124] SeeFigure 3 , Figure 8 , the monitoring device may include a third optical path seat 600 disposed in the window seat 100. A fourth optical lens 601, a fifth optical lens 602, and a second sensor 603 are disposed in the third optical path seat 600. The third optical path seat 600 is configured such that the reference light can pass through the reference area 120, be reflected by the fourth optical lens 601, and enter the second sensor 603; the detection light passes through the monitoring area 110, is reflected by the fifth optical lens 602, and then passes through the fourth optical lens 601 to enter the second sensor 603. Of course, an independent optical path may also be provided. After being reflected by the fifth optical lens 602, the detection light may not pass through the optical lens 601, but enter the second sensor 603 through this independently provided optical path.

[0125] Exemplarily, the fourth optical lens 601 may be a quartz sheet or a dichroic mirror, and the fifth optical lens 602 is a reflecting mirror. The second sensor 603 may be a quantum dot sensor. The fourth optical lens 601 may be disposed between the fifth optical lens 602 and the second sensor 603. That is, Figure 2 taking [example] as an example, the second sensor 603, the fourth optical lens 601, and the fifth optical lens 602 are sequentially arranged from top to bottom.

[0126] It should be understood that in an embodiment where the monitoring device as shown in Figure 2 simultaneously includes the second optical path seat 500 and the third optical path seat 600, the reference light can pass through the third optical lens 501 and enter the second sensor 603 after being reflected by the fourth optical lens 601.

[0127] By providing the second optical path seat 500 and the third optical path seat 600, the monitoring device provided by the present application can simultaneously obtain various spectral information such as transmission, scattering, and / or fluorescence, achieving the purpose of multi-parameter monitoring.

[0128] In one embodiment, the first optical path seat 300, the second optical path seat 500, and the third optical path seat 600 can all be hermetically connected to the window seat 100.

[0129] The first optical path seat 300, the second optical path seat 500, and the third optical path seat 600 are distinguished based on functions, and the three of them can be provided separately or integrally formed.

[0130] Next, the present application provides two optical path examples.

[0131] (1) The light shielding sheet 410 blocks the detection optical path. The light source assembly 200 emits incident light, and the incident light forms a reference light after being reflected by the first optical lens 301. A part of the reference light enters the first sensor 502 after being reflected by the third optical lens 501, and this part of the reference light serves as the reference light for scattering and / or fluorescence. Another part of the reference light passes through the third optical lens 501 and then enters the second sensor 603 after being reflected by the fourth optical lens 601, and this part of the reference light serves as the reference light for transmitted light. When the third optical lens 501 is not provided, the light that enters the second sensor 603 after being reflected by the fourth optical lens 601 can also serve as the reference light for scattering and / or fluorescence.

[0132] (2) The light shielding sheet 410 blocks the reference optical path. The light source assembly 200 emits incident light, and the incident light passes through the first optical lens 301 and forms a detection light after being reflected by the second optical lens 302. The detection light enters the monitoring area 110, and the scattered light and / or fluorescence generated by the detection light in the monitoring area 110 passes through the third optical lens 501 and then enters the first sensor 502, which serves as the detection light for scattered light and / or fluorescence. The detection light that passes through the monitoring area 110 is reflected by the fifth optical lens 602, passes through the fourth optical lens 601, and then enters the second sensor 603, which serves as the detection light for transmitted light.

[0133] In one embodiment, referring to Figure 2 、 Figure 4 、 Figure 8 In the horizontal direction, the first optical path base 300 and the third optical path base 600 are located on both sides of the reference area 120, and protective parts (such as the first protective part 901 and the second protective part 902) can be provided on the side walls of the first optical path base 300 and the third optical path base 600 that are far from the reference area 120. For example, the protective parts are formed by a black material to function as avoiding reflected stray light. The first protective part 901 can be located on the side wall of the space between the first optical lens 301 and the second optical lens 302 of the first optical path base 300. The second protective part 902 can be located on the side wall of the space between the fourth optical lens 601 and the fifth optical lens 602 of the third optical path base 600.

[0134] Referring to Figure 9 , the light source assembly 200 can include an incident optical path base 201, and a light source 202 and a lens 203 can be provided in the incident optical path base 201. The light source 202 is, for example, an LED light board and can be single-core or multi-core integrated. The light source 202 can be configured to be capable of being controlled to emit different bands. The lens 203 can be, for example, a convex lens 203.

[0135] The light source 202 can be disposed at one end of the incident optical path seat 201. A seal 204 (such as an O-ring, etc.) can be provided between the light source 202 and the incident optical path seat 201 to achieve a sealed connection. The lens 203 can be disposed at the other end of the incident optical path seat 201, and the other end of the incident optical path seat 201 can be hermetically connected to the first optical path seat 300.

[0136] See Figure 2 , a window sheet is provided on the light-transmitting window that connects the monitoring area 110 to the inside of the window seat 100. Exemplarily, the window sheet can include a first window sheet 121, a second window sheet 122, and a third window sheet 123 disposed around the monitoring area 110. The first window sheet 121 is located between the monitoring area 110 and the first optical path seat 300, the second window sheet 122 is located between the monitoring area 110 and the second optical path seat 500, and the third window sheet 123 is located between the monitoring area 110 and the third optical path seat 600.

[0137] In an embodiment of the present application, see Figure 11 , the monitoring device can include a monitoring device body 950, and the width W1 of the monitoring device body 950 can be greater than or equal to its thickness W2. The height H of the monitoring device body 950 is greater than its width W1 and thickness W2.

[0138] The monitoring device further includes a cleaning module 700. See Figure 10 , in one embodiment, the cleaning module 700 includes a rotating output shaft 710, a cleaning brush handle 720, and a cleaning brush head 730.

[0139] The housing of the cleaning module 700 can be connected to the side of the monitoring device body 950 through an interface board 940. The rotation axis of the rotating output shaft 710 is parallel to the height direction of the monitoring device. One end of the cleaning brush handle 720 is connected to the rotating output shaft 710, and the cleaning brush head 730 is connected (such as fixedly connected) to the other end of the cleaning brush handle 720. Driven by the rotating output shaft 710, the cleaning brush head 730 can clean the window sheet.

[0140] See Figure 11 , in another embodiment, the difference from the Figure 10 illustrated embodiment is that the cleaning brush handle 720 can be controlled to rotate along its own axis, and the axis is parallel to the direction of the detection light when passing through the monitoring area 110 (such as the width direction). The cleaning brush head 730 is connected (such as fixedly connected) to the cleaning brush handle 720. Driven by the rotating output shaft 710, the cleaning brush head 730 can clean the window sheet.

[0141] The moving range of the cleaning brush head 730 in both implementation manners can be controlled within the orthographic projection in the height direction of the monitoring device. Therefore, a filter screen (not shown in the figure) can be further installed at the monitoring area 110, and the filter screen does not affect the normal operation of the cleaning brush head 730.

[0142] Furthermore, the cleaning brush head 730 can include a scraper or bristles, and the cleaning brush head 730 can clean the first window piece 121, the second window piece 122, and the third window piece 123. The cleaning method can be scraping, rolling brushing, etc.

[0143] See Figure 2 , a main control component 910 can also be provided in the monitoring device, which is used to control the light source component 200, the sensor, etc. The main control component 910 can be arranged above the third optical path seat 600.

[0144] See Figure 2 , the monitoring device can also include a housing 920, the housing 920 is hermetically connected to the top of the window seat 100, and the housing 920 can cover the light source component 200, the optical path switching device 400, the main control component 910, etc. A connection end 930 can be provided on the housing 920, and the internal and external connection of power and / or signals can be realized through the connection end 930. The connection end 930 can adopt a waterproof connector.

[0145] In summary, the monitoring device provided by the present application can realize in-situ monitoring of low water levels, can realize multi-parameter monitoring of transmission, scattering, and fluorescence, has a reference optical path as a reference control, and has excellent effects.

[0146] It should be understood that the parallel concept in the present application includes a reasonable tolerance range, and there may be a deviation of no more than plus or minus ten degrees from the theoretical parallel direction.

[0147] The above are the preferred implementation manners of the present application. It should be noted that for those skilled in the art, without departing from the principle of the present application, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present application.

Claims

1. A monitoring device, characterized in that: include: A window seat (100), the window seat (100) is located at the bottom of the monitoring device, and the bottom of the window seat (100) is provided with a groove with an opening facing downward, the groove is formed into a monitoring area (110) capable of allowing the liquid to be tested to flow through or fill, and a reference area (120) is provided in the window seat (100), and the reference area (120) is located above the monitoring area (110); A light source assembly (200), located on the top of the window seat (100), for providing incident light; a first optical path seat (300) disposed in the window seat (100), wherein a first optical lens (301) and a second optical lens (302) are disposed in the first optical path seat (300), and the first optical path seat (300) is configured such that the incident light can be reflected by the first optical lens (301), bypass the monitoring area (110) and enter the reference area (120) as reference light, and the incident light can be reflected by the second optical lens (302) and enter the monitoring area (110) as detection light; an optical path switching device (400), the optical path switching device (400) being configured to be switchable between blocking the detection light from entering the monitoring area (110) and blocking the reference light from entering the reference area (120); A first sensor (502) is located on the top of the window seat (100), and the scattered light and / or fluorescence generated after the detection light enters the monitoring area (110) is configured to enter the first sensor (502); A second sensor (603) is located on the top of the window seat (100), and the detection light and the reference light passing through the monitoring area (110) are configured to enter the second sensor (603). The incident direction of the incident light is downward, and the receiving end of the first sensor (502) is downward, so that the incident light enters the first sensor (502) and the second sensor (603) after at least being propagated downward and horizontally.

2. The monitoring device according to claim 1, characterized in that: The receiving end of the second sensor (603) faces downward, and the incident light enters the first sensor (502) and the second sensor (603) along a U-shaped optical path; and / or, the first sensor (502) is configured to receive the reference light, and the monitoring device comprises a second optical path seat (500) arranged in the window seat (100), the reference area (120) is formed in the second optical path seat (500), a third optical lens (501) is arranged in the reference area (120), and the second optical path seat (500) is configured to: Part of the reference light can be reflected by the third optical lens (501) and enter the first sensor (502). The scattered light and / or fluorescence generated by the detection light after passing through the monitoring area (110) can pass through the third optical lens (501) and enter the first sensor (502). The second optical path seat (500) is located above the monitoring area (110).

3. The monitoring device according to claim 2, characterized in that: The optical path switching device (400) comprises a driving mechanism (421), the driving mechanism (421) is arranged on the second optical path seat (500), the third optical lens (501) is a quartz plate or a dichroic mirror, and / or The first optical lens (301) is a quartz plate or a dichroic mirror, and the second optical lens (302) is a reflecting mirror.

4. The monitoring device according to claim 1, characterized in that: The monitoring device comprises a third optical path seat (600) arranged in the window seat (100), a fourth optical lens (601) and a fifth optical lens (602) being arranged in the third optical path seat (600), and the third optical path seat (600) is configured as follows: The reference light passes through the reference area (120), is reflected by the fourth optical lens (601), and enters the second sensor (603). The detection light passes through the monitoring area (110), is reflected by the fifth optical lens (602), and enters the second sensor (603).

5. The monitoring device according to claim 4, characterized in that: The monitoring device further comprises a main control component (910), wherein the main control component (910) is located above the third optical path seat (600), the fourth optical lens (601) is a quartz plate or a dichroic mirror, the fifth optical lens (602) is a reflector, and / or The first optical path seat (300) and the third optical path seat (600) are located on both sides of the reference area (120) in the horizontal direction, and the first optical path seat (300) and the third optical path seat (600) are respectively provided with a first protective portion (901) and a second protective portion (902) on the side walls away from the reference area (120).

6. The monitoring device according to claim 1, characterized in that: The monitoring device comprises: A third optical path seat (600), wherein a fourth optical lens (601) is arranged in the third optical path seat (600), Part of the reference light can enter the second sensor (603) after being reflected by the fourth optical lens (601).

7. The monitoring device according to claim 1, characterized in that: The optical path switching device (400) comprises: A shielding sheet (410), wherein the first optical path seat (300) is provided with a slide groove (310), and the shielding sheet (410) is slidably arranged in the slide groove (310); A driving device (420), wherein the driving device (420) can be controlled to drive the shielding plate (410), thereby causing the shielding plate (410) to shield the detection light or shield the reference light.

8. The monitoring device according to claim 1, characterized in that: A window sheet is provided on the light-transmitting window of the monitoring area (110) which is connected to the interior of the window seat (100). The monitoring device further comprises a cleaning module (700). The cleaning module (700) comprises: A rotating output shaft (710), the rotation axis of which is parallel to the height direction of the monitoring device; A cleaning brush handle (720), one end of which is connected to the rotating output shaft (710); A cleaning brush head (730), the cleaning brush head (730) is connected to the other end of the cleaning brush handle (720), and driven by the rotating output shaft (710), the cleaning brush head (730) can clean the window sheet. Alternatively, the cleaning module (700) comprises: A cleaning brush head (730), a cleaning brush handle (720), wherein the cleaning brush handle (720) can be controlled to rotate along its own axis, wherein the axis is parallel to the direction of the detection light when passing through the monitoring area (110); The cleaning brush head (730) is connected to the cleaning brush handle (720), and driven by the cleaning brush handle (720), the cleaning brush head (730) can clean the window sheet.

9. The monitoring device according to claim 1, characterized in that: The monitoring device comprises a monitoring device body (950), and the width W1 of the monitoring device body (950) is greater than or equal to its thickness W2.

10. The monitoring device according to any one of claims 1 to 9, characterized in that: A spectroscopic film and a filter film are arranged on the receiving end of the first sensor (502) from the inside to the outside. The spectroscopic film can split scattered light and / or fluorescence, and the filter film can filter out light directly emitted by the light source assembly (200) and / or interference light. The filter film at least covers a partial area of ​​the spectroscopic film.

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