Dew formation state sensing device

Abstract

The invention provides a moisture condensation state sensing device, which is arranged in a waterproof box of an inspection well, and comprises a first base and a second base which are symmetrically arranged up and down; the first light-transmitting column vertically penetrates through the first base and is opposite to the second light-transmitting column, and the second light-transmitting column vertically penetrates through the second base; one end of the moisture absorption salt column is connected to the first light transmitting column, the other end of the moisture absorption salt column is connected to the second light transmitting column, and the moisture absorption salt column is used for monitoring the moisture condensation state in the inspection well waterproof box. The moisture absorption salt column serves as a monitoring medium, an optical monitoring method based on physical changes is achieved, and the monitoring accuracy and the survivability of the device are remarkably improved. The monitoring method is direct and accurate, and a normal monitoring function can be kept even if a local circuit is short-circuited.

Description

Technical Field

[0001] The present invention belongs to the technical field of drainage system monitoring equipment, and in particular relates to a condensation state sensing device. Background Art

[0002] In the monitoring and management of urban underground drainage networks, electronic equipment in the waterproof boxes of inspection wells face complex environmental challenges. Due to the temperature differences of sewage water at different times and under different conditions, especially in the case of cooling at night and on rainy days, as well as the high temperature and high humidity conditions that may occur inside the pipe network, these factors may cause condensation inside the equipment. Condensation will not only cause irreversible damage to electronic components and electronic circuits, but may also cause short circuits, affecting the stability and safety of the equipment. Therefore, it is particularly important to effectively sense and warn the condensation state inside the closed equipment.

[0003] At present, the existing condensation sensors on the market mainly use capacitive sensor technology to sense condensation by detecting changes in capacitance. However, the printed circuit structure of this sensor is difficult to effectively simulate the condensation state of specific parts such as solder pins and battery pins, resulting in certain limitations in practical applications. In addition, capacitive sensors are heavily dependent on continuous power supply support. Once a local circuit is short-circuited due to condensation, the sensor may have been short-circuited and unable to issue an alarm in time, thus failing to achieve its due protection function.

[0004] Therefore, how to use non-electronic sensors to monitor the moisture condition inside the inspection well waterproof box has become a technical problem that needs to be solved urgently. Summary of the invention

[0005] The present application provides a condensation state sensing device, which aims to accurately sense the condensation state and issue an alarm, thereby timely and effectively protecting electronic equipment from damage.

[0006] The present invention discloses a condensation state monitoring device, which is arranged inside a waterproof box of an inspection well and comprises:

[0007] A first base and a second base, wherein the first base and the second base are symmetrically arranged up and down;

[0008] a first light-transmitting column and a second light-transmitting column, wherein the first light-transmitting column vertically passes through the first base and is arranged opposite to the second light-transmitting column, and the second light-transmitting column vertically passes through the second base;

[0009] A hygroscopic salt column, one end of which is connected to the first light-transmitting column, and the other end of which is connected to the second light-transmitting column, for monitoring the condensation state inside the inspection well waterproof box; wherein, when the hygroscopic salt column is dry and has not absorbed water vapor, the optical property is opaque, preventing the light path between the first light-transmitting column and the second light-transmitting column from being connected; when the hygroscopic salt column absorbs water vapor inside the inspection well waterproof box, the transparency increases, allowing the light path between the first light-transmitting column and the second light-transmitting column to be connected, so as to indicate that there is a risk of condensation on the electronic devices inside the inspection well waterproof box.

[0010] In an implementation device of the present application, it also includes an LED light strip, which is arranged around the outer circumference of the second light-transmitting column, and a plurality of LED lamp beads are evenly distributed along the axial direction of the second light-transmitting column, for actively emitting light;

[0011] A photoresistor ring is arranged around the outer circumference of the first light-transmitting column, and a photoresistor is arranged on each surface, which is used to convert the received light into an electrical signal to monitor the condensation state inside the inspection well waterproof box.

[0012] In an implementation device of the present application, a first concave light guide groove is provided at the connection between the photoresistor ring and the first light-transmitting column, and a second concave light guide groove is provided at the connection between the LED light strip and the second light-transmitting column; wherein,

[0013] The groove facade and lower cut surface of the second concave light guide groove are treated with reflective treatment, and the upper cut surface is treated with light transmission, so that the light emitted by the LED lamp beads is incident on the wall of the second concave light guide groove at a small angle, thereby achieving effective reflection and conduction of light.

[0014] The vertical surface of the groove of the first concave light-guiding groove is roughened, and the upper and lower cut surfaces are light-transmitting. The roughened surface captures part of the refracted light from the inside of the first light-transmitting column and ensures that part of the light can continue to be transmitted for subsequent external light-assisted detection.

[0015] In an implementation device of the present application, the groove facade and lower cut surface of the concave light guide groove are treated with reflective treatment, and the upper cut surface is treated with light transmission, so that the light emitted by the LED lamp beads is incident on the wall of the concave light guide groove at a small angle, thereby realizing effective reflection and conduction of light.

[0016] In a device of the present application, the groove facades of the upper and lower concave light-guiding grooves are roughened, and the upper and lower cut surfaces are light-transmitting. The roughened surfaces capture part of the refracted light from the inside of the first light-transmitting column and ensure that part of the light can continue to be transmitted for subsequent external light-assisted detection.

[0017] In an implementation device of the present application, a plurality of moisture absorbing windows are provided on the hygroscopic salt column, and the moisture absorbing windows are used for adding hygroscopic salt.

[0018] In an implementation device of the present application, it also includes a condensation guide needle, which is arranged at a moisture absorption window of the hygroscopic salt column, and is used to collect water vapor inside the inspection well waterproof box and guide the water droplets downward along the condensation guide needle to flow into the hygroscopic salt in the hygroscopic salt column after condensation.

[0019] In an implementation device of the present application, it also includes a condensation guide line, one end of which is fixed to the first base, and the other end is fixed to a moisture absorption window of the hygroscopic salt column. The condensation guide line is a small strand of silk thread that is immersed in salt solution and then air-dried, and is used to collect water vapor inside the inspection well waterproof box and guide the water droplets to flow downward along the condensation guide line into the hygroscopic salt in the hygroscopic salt column after condensation.

[0020] In an implementation device of the present application, a water storage box is respectively provided on the first base and the second base for collecting water vapor condensation droplets guided to the respective bases by the hygroscopic salt column.

[0021] In an implementation device of the present application, the first light-transmitting column or the second light-transmitting column is made of glass or plastic.

[0022] In an implementation device of the present application, the upper cover and the lower cover of the inspection well waterproof box are each provided with a fixing hole, and the two fixing holes are symmetrically arranged; the first light-transmitting column and the second light-transmitting column of the condensation status sensing device are respectively inserted into the two fixing holes to achieve stable installation.

[0023] As described above, the condensation state sensing device disclosed in the present application has at least one of the following technical effects:

[0024] (1) By using a hygroscopic salt column as a monitoring medium, an optical monitoring method based on physical changes is realized, which significantly improves the accuracy of monitoring and the survivability of the device. In a dry state, the crystal particles of the hygroscopic salt column are more obvious, and the air pores between the salt particles cause the salt column to appear opaque, effectively preventing the conduction of the light path; after absorbing moisture, the air pores between the salt particles are filled with salt liquid, and its transparency increases, allowing the light path to be conducted. This monitoring method is direct, accurate, and does not rely on the continuity of the circuit. Even in the event of a short circuit in a local circuit, it can maintain normal monitoring and alarm functions. In addition, the hygroscopic effect of the salt column can make its humidity critical point slightly higher than the condensation level of the circuit board, which can effectively achieve early warning.

[0025] (2) The LED light strip actively emits light signals, which can monitor the condensation status in real time. Through the light-guiding channel formed by the transparent plastic column and its hygroscopic salt column, the photoresistor on the LED light strip converts the received light signal into an electrical signal through the principle of total reflection of optical fiber, providing real-time data for the monitoring system, realizing active monitoring and rapid response to the condensation status.

[0026] (3) The second concave light guide groove has a reflective surface and a light-transmitting surface on the groove facade and the lower cut surface, and a light-transmitting surface on the upper cut surface. The first concave light guide groove has a rough surface on the groove facade and a light-transmitting surface on the upper cut surface and the lower cut surface, which optimizes the guidance and distribution of light and improves the uniformity of the optical signal and the accuracy of monitoring. At the same time, the hygroscopic salt column is provided with multiple moisture absorption windows to facilitate the addition of hygroscopic salt, enhance the maintainability of the device, and ensure long-term and effective monitoring.

[0027] (4) Through the condensation guide needle or condensation guide wire, as well as the design of the water storage box, condensation droplets can be effectively collected and guided to prevent the droplets from dripping directly onto electronic devices, thereby avoiding potential short circuit or damage risks, improving the safety of the monitoring device, and protecting the electronic devices inside the inspection well waterproof box. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic diagram showing the structure of a condensation state sensing device in one embodiment of the present disclosure.

[0029] Figure 2 A schematic diagram showing the structure of a concave light-guiding groove and a photoresistor in one embodiment of the present disclosure is shown.

[0030] Figure 3 A schematic structural diagram of a condensation state sensing device in another embodiment of the present disclosure is shown.

[0031] Figure 4 A schematic structural diagram of a waterproof box for an inspection well in one embodiment of the present disclosure is shown.

[0032] Component number description

[0033] First base 11

[0034] Second base 12

[0035] The first light-transmitting column 21

[0036] The second light-transmitting column 22

[0037] Hygroscopic salt column fixed sleeve 31

[0038] Hygroscopic salt column 311

[0039] Moisture absorption window 32

[0040] Photoresistor ring 41

[0041] LED light strip 42

[0042] The first concave light guiding groove 51

[0043] First groove facade 511

[0044] First upper cut surface 512

[0045] First lower cut surface 513

[0046] The second concave light guiding groove 52

[0047] Second groove facade 521

[0048] Second upper cut surface 522

[0049] Second lower cut surface 523

[0050] Photoresistor 6

[0051] Condensation guide needle 71

[0052] Condensation guide line 72

[0053] Water storage box 8

[0054] Inspection well waterproof box 9

[0055] Fixing hole 91 DETAILED DESCRIPTION

[0056] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0057] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0058] The technical solutions in the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0059] like Figure 1The figure shows the overall structure of the condensation state monitoring device disclosed in the present invention. The condensation state monitoring device comprises: a first base 11, a second base 12, a first light-transmitting column 21, a second light-transmitting column 22 and a hygroscopic salt column 311 (inside the hygroscopic salt column fixing sleeve 31, which can be seen through the moisture absorption window 32).

[0060] The first base 11 and the second base 12 are vertically symmetrically arranged.

[0061] Specifically, the first base 11 and the second base 12 are the supporting structures of the condensation status monitoring device, wherein the first base 11 is designed to be fixed on the bottom of the inspection well waterproof box 9, and the second base 12 is correspondingly fixed on the top of the inspection well waterproof box 9, and the two realize the uniform distribution and balance of the device inside the waterproof box through their symmetrical arrangement. The first base 11 and the second base 12 have mirror symmetry in structure, that is, the structure of the second base 12 is the upside-down counterpart of the first base 11, ensuring the functional and structural consistency at different positions. This symmetrical design not only provides the aesthetics of the device, but also enhances the stability and balance of the device, so that the first light-transmitting column 21 and the second light-transmitting column 22 can be vertically aligned inside the waterproof box, thereby ensuring the correct conduction of the light path and the accuracy of monitoring.

[0062] The first light-transmitting column 21 and the second light-transmitting column 22 , the first light-transmitting column 21 vertically passes through the first base 11 and is arranged opposite to the second light-transmitting column 22 , and the second light-transmitting column 22 vertically passes through the second base 12 .

[0063] Specifically, the first light-transmitting column 21 is designed to vertically pass from one side of the first base 11 to the other side, and the second light-transmitting column 22 is correspondingly vertically passed from one side of the second base 12 to the other side, and the two are arranged correspondingly to each other to ensure that the optical signal can be effectively transmitted and monitored inside the inspection well waterproof box 9. The vertical arrangement of the first light-transmitting column 21 and the second light-transmitting column 22 not only ensures the linear transmission of the optical path and reduces the loss and distortion of the optical signal, but also facilitates the connection with the hygroscopic salt column 311, so that the optical signal can smoothly monitor the condensation state through the change of the optical properties of the hygroscopic salt column 311.

[0064] In some embodiments, the first light-transmitting column 21 or the second light-transmitting column 22 is made of glass or plastic.

[0065] Specifically, when selecting materials, it is necessary to consider their light transmittance, chemical corrosion resistance, temperature resistance and mechanical strength. Glass is selected for its excellent temperature resistance and chemical stability, while plastic is considered for its lightness and cost-effectiveness. These two materials ensure that the light-transmitting column can withstand the environmental conditions inside the inspection well waterproof box 9 and can maintain its optical properties for a long time.

[0066] The hygroscopic salt column 311, one end of which is connected to the first light-transmitting column 21, and the other end of which is connected to the second light-transmitting column 22, is used to monitor the condensation state inside the inspection well waterproof box 9; wherein, when the hygroscopic salt column 311 is dry and has not absorbed water vapor, the optical property is opaque, preventing the light path between the first light-transmitting column 21 and the second light-transmitting column 22 from being connected; when the hygroscopic salt column 311 absorbs the water vapor inside the inspection well waterproof box 9, the transparency increases, allowing the light path between the first light-transmitting column 21 and the second light-transmitting column 22 to be connected, so as to prompt that the electronic devices inside the inspection well waterproof box 9 are at risk of condensation.

[0067] Specifically, the hygroscopic salt column 311 is the core component of the condensation state monitoring device, and its function is to indirectly detect the condensation state inside the inspection well waterproof box 9 by monitoring its own hygroscopic changes. The hygroscopic salt column 311 is designed to be connected to the first light-transmitting column 21 at one end and to the second light-transmitting column 22 at the other end, forming a part of the optical path, and its hygroscopic characteristics directly affect the on-off state of the optical path.

[0068] Under normal working conditions, when the hygroscopic salt column 311 is dry and does not absorb water vapor, due to the characteristics of its internal structure, it exhibits an opaque optical property, thereby preventing the light signal from being transmitted from the first light-transmitting column 21 to the second light-transmitting column 22, that is, the light path is in a blocked state. This design allows the device to maintain the isolation of the light path under non-condensation conditions, providing a stable reference state for the monitoring system.

[0069] When water vapor appears in the internal environment of the inspection well waterproof box 9, especially when condensation occurs, the hygroscopic salt column 311 begins to absorb the surrounding water vapor. As the hygroscopic salt column 311 absorbs moisture, its internal structure changes, causing the optical properties to change from opaque to transparent or translucent. This increase in transparency allows the optical path to be partially or completely turned on, thereby triggering the monitoring system to detect changes in the optical signal, and then prompting the user that the electronic devices inside the inspection well waterproof box 9 are at risk of condensation.

[0070] The design of the hygroscopic salt column 311 not only provides an intuitive means of condensation monitoring, but also realizes direct and passive monitoring of the condensation state through changes in its optical properties, without the need for an additional power supply. This design improves the reliability of the monitoring system, especially in an environment where the power supply is unstable or a circuit failure may occur, the monitoring function of the hygroscopic salt column 311 is not affected, ensuring the continuity and accuracy of the monitoring.

[0071] In some embodiments, the hygroscopic salt column is provided with a hygroscopic salt column fixing sleeve 31 which is sleeved on the first light-transmitting column 21 and the second light-transmitting column 22 to connect the first light-transmitting column 21 and the second light-transmitting column 22 and store the hygroscopic salt column 311 .

[0072] Specifically, the main function of the hygroscopic salt column fixing sleeve 31 is to fix the hygroscopic salt column 311 to prevent it from being displaced or damaged during operation. A certain gap is designed between the hygroscopic salt column fixing sleeve 31 and the first light-transmitting column 21 and the second light-transmitting column 22. This design allows excess liquid on the hygroscopic salt column 311 to flow through the gap and flow toward the water storage box 8. Such a diversion design effectively prevents the salt solution from splashing inside the waterproof box, thereby protecting the internal circuit from corrosion or short circuit.

[0073] In some embodiments, since the hygroscopic salt may be lost during use, the hygroscopic salt column fixing sleeve 31 is provided with a plurality of hygroscopic windows 32, and the hygroscopic windows 32 are used to add hygroscopic salt.

[0074] Specifically, considering that the hygroscopic salt in the hygroscopic salt column 311 may be gradually consumed due to moisture absorption during long-term use, in order to ensure that the device can continuously and effectively monitor the condensation state, a plurality of hygroscopic windows 32 are specially designed on the hygroscopic salt column fixing sleeve 31. These hygroscopic windows 32 provide a convenient way to add new hygroscopic salt to the hygroscopic salt column 311 when the hygroscopic salt in the hygroscopic salt column 311 is reduced to a certain level, thereby extending the service life of the hygroscopic salt column 311 and maintaining its monitoring efficiency.

[0075] The moisture absorption windows 32 are evenly distributed on the outer surface of the hygroscopic salt column fixing sleeve 31, and are designed to be easily accessible in shape and size, so that the operator can easily add the hygroscopic salt into the hygroscopic salt column 311 through the hygroscopic windows 32. The number, position and distribution of the moisture absorption windows 32 can be optimized according to the specific size and shape of the hygroscopic salt column fixing sleeve 31 to ensure that the hygroscopic salt in the entire hygroscopic salt column 311 can be evenly replenished.

[0076] In one embodiment of the present disclosure, Figure 2As shown, the condensation status monitoring device also includes an LED light strip 42, which is arranged around the outer periphery of the second light-transmitting column 22, and a plurality of LED lamp beads are evenly distributed along the axial direction of the second light-transmitting column 22 for actively emitting light; a photoresistor ring 41, which is arranged around the outer periphery of the first light-transmitting column 21, and photoresistors are provided on each surface, which are used to convert the received light into electrical signals to monitor the condensation status inside the inspection well waterproof box.

[0077] Specifically, the LED light strip 42 is designed to surround the outer periphery of the second light-transmitting column 22, and a plurality of LED lamp beads thereon are evenly distributed along the axial direction of the second light-transmitting column. This configuration enables the LED light strip 42 to actively emit light and penetrate the hygroscopic salt column 311, thereby being used to monitor the condensation state inside the inspection well waterproof box. The active light-emitting function of the LED light strip 42 provides a controllable light source for the monitoring system, enabling the device to stably transmit and receive optical signals under various environmental conditions.

[0078] The photoresistor ring 41 is designed to surround the outer circumference of the first light-transmitting column 21, and photoresistors are installed on each surface thereof. The main function of the photoresistor ring is to receive light transmitted or scattered from the second light-transmitting column 21 through the hygroscopic salt column 311, and convert these light signals into electrical signals. These electrical signals can then be processed by the control unit in the device to determine whether condensation occurs inside the inspection well waterproof box.

[0079] When the internal environment of the inspection well waterproof box is dry and the hygroscopic salt column 311 does not absorb moisture, its optical properties are opaque, which prevents or weakens the conduction of the light path. As the ambient humidity increases, the hygroscopic salt column begins to absorb moisture, and the transparency increases, allowing more light to pass through. The photoresistor on the photoresistor ring detects the changes in the light transmitted by the light-transmitting column and converts these changes into electrical signals to achieve real-time monitoring of the condensation state.

[0080] In some embodiments, Figure 2 , further comprising a first concave light guide groove 51 located at the connection between the photoresistor ring 41 and the first light-transmitting column 21, and a second concave light guide groove 52 located at the connection between the LED light strip 42 and the second light-transmitting column 22; wherein,

[0081] The second groove vertical surface 521 and the second lower cut surface 523 of the second concave light guide groove 52 are treated with reflective treatment, and the second upper cut surface 522 is treated with light transmission, so that the light emitted by the LED lamp bead is incident with the wall surface of the second concave light guide groove at a small angle, thereby realizing effective reflection and conduction of the light. At the same time, the utilization rate of the light signal is also enhanced, ensuring that the light signal can be efficiently transmitted to the photoresistor ring.

[0082] The first groove facade 511 of the first concave light-guiding groove 51 is roughened, and the first upper cut surface 512 and the first lower cut surface 513 are light-transmitting. The roughened surface captures part of the refracted light from the inside of the first light-transmitting column 21 and ensures that part of the light can continue to be transmitted for subsequent external light-assisted detection.

[0083] In this implementation, the monitoring device can effectively collect and conduct optical signals through the coordinated work of the first concave light guide groove 51 and the second concave light guide groove 52. The optical signal emitted by the LED light strip 42 is transmitted through the second concave light guide groove 52, while the photoresistor ring 41 receives the optical signal from the first light-transmitting column 21 through the first concave light guide groove 51. These optical signals are then converted into electrical signals for monitoring and analyzing the condensation state inside the inspection well waterproof box.

[0084] In order to actively collect the water vapor inside the inspection well waterproof box 9, Figure 3 As shown, in some embodiments, a condensation guide needle 71 is further included. The condensation guide needle 71 is arranged at one of the moisture absorption windows 32 of the hygroscopic salt column fixing sleeve 31, and is used to collect water vapor inside the inspection well waterproof box 9 and guide the water droplets downward along the condensation guide needle 71 to flow into the hygroscopic salt column 311 after condensation.

[0085] Specifically, the condensation guide needle 71 is arranged at one of the moisture absorption windows 32 of the hygroscopic salt column fixing sleeve 31. After the water vapor condenses, the formed water droplets are guided to flow downward along the condensation guide needle 71 into the hygroscopic salt column 311. The condensation guide needle 71 provides a flow path for condensed water droplets through its physical structure, so that the condensed water droplets can directly contact the hygroscopic salt column 311. This design not only improves the response speed of the hygroscopic salt column 311 to condensed water vapor, but also enhances the sensitivity of the monitoring device to changes in the condensation state, thereby being able to more accurately monitor and warn of condensation risks.

[0086] Furthermore, in some embodiments, a condensation guide line 72 is also included, one end of which is fixed to the first base 11, and the other end is fixed to a moisture absorption window 32 of the hygroscopic salt column fixing sleeve 31, and is used to collect water vapor inside the inspection well waterproof box 9 and guide the water droplets to flow downward along the condensation guide line 72 into the hygroscopic salt column 311 after condensation.

[0087] In order to collect the water vapor condensation droplets guided to the respective bases by the hygroscopic salt column 311 for effective collection and subsequent treatment, in some embodiments, a water storage box 8 is provided on each of the first base 11 and the second base 12 for collecting the water vapor condensation droplets guided to the respective bases by the hygroscopic salt column fixing sleeve 31. Preferably, the inner wall of the water storage box 8 is less than 2 mm from the outer wall of the first light-transmitting column 21 and the second light-transmitting column 22, which can ensure that the liquid in the water storage box 8 does not leak out without tilting the angle.

[0088] Since the condensation state sensing device is integrated on the inspection well waterproof box 9, Figure 4 As shown, in some embodiments, the upper cover and the lower cover of the inspection well waterproof box 9 are each provided with a fixing hole 91, and the two fixing holes 91 are symmetrically arranged; the first light-transmitting column 21 and the second light-transmitting column 22 of the condensation state sensing device are respectively inserted into the two fixing holes 91 to achieve stable installation.

[0089] Specifically, the upper cover and the lower cover of the inspection well waterproof box 9 are each provided with a fixing hole 91, and the design purpose of the two fixing holes 91 is to provide a stable installation interface for the first light-transmitting column 21 and the second light-transmitting column 22 of the condensation state sensing device. The setting of the fixing holes 91 ensures that the condensation state sensing device can form an integrated structure with the inspection well waterproof box 9, thereby improving the overall stability and reliability. The fixing holes 91 are symmetrically arranged on the upper cover and the lower cover. This symmetrical layout not only ensures the balanced installation of the condensation state sensing device, but also ensures the accurate alignment of the optical path, thereby improving the optical performance and monitoring accuracy of the monitoring device. The size and shape of the fixing hole 91 match the outer diameter of the light-transmitting column to ensure that the light-transmitting column can be tightly inserted and is not easy to fall off. The edge of the fixing hole 91 can be designed to be chamfered or threaded to facilitate the fixation and sealing of the light-transmitting column.

[0090] In order to better illustrate the technical solution of the present disclosure, an example is given below to describe the application scenario of the condensation state sensing device.

[0091] In the inspection well of the urban underground drainage network, the condensation state sensing device is integrated into the waterproof box to monitor and warn of condensation. The key components of the device include a symmetrically arranged first base and a second base, which are respectively installed on the top and bottom of the waterproof box, and a first light-transmitting column and a second light-transmitting column vertically passing through these bases. The light-transmitting column is firmly installed through the fixing hole, and the hygroscopic salt column is connected between the two light-transmitting columns to monitor the condensation state.

[0092] When powered on, the monitoring process of the device is as follows: the LED light strip surrounding the outer periphery of the second light-transmitting column actively emits light, and the LED lamp beads evenly distributed along the axis of the light-transmitting column provide a continuous light source for monitoring the condensation state inside the waterproof box. The light signal is effectively reflected and transmitted to the hygroscopic salt column through the reflective treatment and light-transmitting treatment of the second concave light guide groove. When the internal environment of the inspection well causes condensation, the hygroscopic salt column absorbs water vapor and its transparency increases, so that the light signal can be conducted to the first light-transmitting column through the hygroscopic salt column. The first concave light guide groove captures part of the refracted light from the inside of the first light-transmitting column, and ensures that the light continues to be transmitted to the photoresistor ring through the rough surface treatment and light-transmitting treatment. The light received by the photoresistor ring is converted into an electrical signal to monitor and analyze the condensation state and realize real-time early warning of condensation risks.

[0093] When the inside of the waterproof box returns to its original temperature, the saturated vapor pressure of water vapor increases, the water on the hygroscopic salt column partially evaporates, and the hygroscopic salt column returns to an opaque state, and the alarm is lifted. If the condensation inside the waterproof box is caused by increased humidity, the hygroscopic salt column will be soaked as a whole, and recrystallization will cause the crystals to be arranged regularly, the light conduction will increase, and the device will continue to be in an alarm state, prompting the operation and maintenance personnel to disassemble the machine for maintenance.

[0094] In the case of power failure, the monitoring process of the device can be performed manually. The specific operation is to use a flashlight to illuminate the fixing hole at one end and observe the fixing hole at the other end. If the brightness of the fixing hole at the other end is higher, it means that the internal salt column has absorbed moisture, suggesting that condensation may exist inside.

[0095] As time goes by, the hygroscopic salt in the hygroscopic salt column may decrease. At this time, new hygroscopic salt can be added through the hygroscopic window to ensure the continuous and effective operation of the device. The condensation guide needle and condensation guide wire (a small strand of silk thread that is immersed in salt solution and air-dried) collect condensed water droplets from the hygroscopic window of the hygroscopic salt column and guide them back into the hygroscopic salt column to prevent the droplets from damaging the electronic devices. A water storage box is provided on each of the first base and the second base to collect the condensed water droplets guided by the hygroscopic salt column, which is convenient for the management and discharge of the condensed water droplets.

[0096] In summary, the present disclosure provides a condensation state sensing device, which uses a hygroscopic salt column as a monitoring medium and utilizes the change in transparency after moisture absorption to achieve optical monitoring, thereby improving the monitoring accuracy and device stability. The symmetrically arranged LED light strips and photoresistor rings realize active optical signal monitoring and quickly respond to condensation changes. The design of the two concave light guide grooves and the moisture absorption window of the hygroscopic salt column optimizes the light distribution and device maintainability. The condensation guide needle, condensation guide wire and water storage box effectively collect condensed droplets to prevent damage to electronic devices, thereby enhancing the safety and reliability of the device.

[0097] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A condensation state sensing device, arranged inside a waterproof box of an inspection well, characterized in that: include: A first base and a second base, wherein the first base and the second base are symmetrically arranged up and down; a first light-transmitting column and a second light-transmitting column, wherein the first light-transmitting column vertically passes through the first base and is arranged opposite to the second light-transmitting column, and the second light-transmitting column vertically passes through the second base; A hygroscopic salt column, one end of which is connected to the first light-transmitting column, and the other end of which is connected to the second light-transmitting column, for monitoring the condensation state inside the inspection well waterproof box; wherein, when the hygroscopic salt column is dry and has not absorbed water vapor, the optical property is opaque, preventing the light path between the first light-transmitting column and the second light-transmitting column from being connected; when the hygroscopic salt column absorbs water vapor inside the inspection well waterproof box, the transparency increases, allowing the light path between the first light-transmitting column and the second light-transmitting column to be connected, so as to indicate that there is a risk of condensation on the electronic devices inside the inspection well waterproof box.

2. The condensation state sensing device according to claim 1, characterized in that: Also includes: An LED light strip is arranged around the outer circumference of the second light-transmitting column, and a plurality of LED lamp beads are evenly distributed along the axial direction of the second light-transmitting column, for actively emitting light; A photoresistor ring is arranged around the outer circumference of the first light-transmitting column, and a photoresistor is arranged on each surface, which is used to convert the received light into an electrical signal to monitor the condensation state inside the inspection well waterproof box.

3. The condensation state sensing device according to claim 2, characterized in that: It also includes a first concave light guide groove located at the connection between the photoresistor ring and the first light-transmitting column, and a second concave light guide groove located at the connection between the LED light strip and the second light-transmitting column; wherein, The groove facade and lower cut surface of the second concave light guide groove are treated with reflective treatment, and the upper cut surface is treated with light transmission, so that the light emitted by the LED lamp beads is incident on the wall of the second concave light guide groove at a small angle, thereby achieving effective reflection and conduction of the light; The vertical surface of the groove of the first concave light-guiding groove is roughened, and the upper and lower cut surfaces are light-transmitting. The roughened surface captures part of the refracted light from the inside of the first light-transmitting column and ensures that part of the light can continue to be transmitted for subsequent external light-assisted detection.

4. The inspection well waterproof box according to claim 1, characterized in that: The hygroscopic salt column is provided with a hygroscopic salt column fixing sleeve outside, which is sleeved on the first light-transmitting column and the second light-transmitting column, and is used to connect the first light-transmitting column and the second light-transmitting column and store the hygroscopic salt column.

5. The condensation state sensing device according to claim 4, characterized in that: The hygroscopic salt column fixing sleeve is provided with a plurality of hygroscopic windows, and the hygroscopic windows are used for adding hygroscopic salt.

6. The condensation state sensing device according to claim 5, characterized in that: It also includes a condensation guide needle, which is arranged at a moisture absorption window of the hygroscopic salt column fixing sleeve and is used to collect water vapor inside the inspection well waterproof box and guide water droplets downward along the condensation guide needle to flow into the hygroscopic salt column after condensation.

7. The condensation state sensing device according to claim 5, characterized in that: It also includes a condensation guide line, one end of which is fixed to the first base, and the other end is fixed to a moisture absorption window of the hygroscopic salt column fixing sleeve. The condensation guide line is a small strand of silk thread that is immersed in salt solution and then air-dried, and is used to collect water vapor inside the inspection well waterproof box and guide the water droplets to flow downward along the condensation guide line into the hygroscopic salt column after condensation.

8. The condensation state sensing device according to claim 1, characterized in that: A water storage box is respectively provided on the first base and the second base for collecting excess water vapor condensation droplets on the hygroscopic salt column.

9. The condensation state sensing device according to claim 1, characterized in that: The first light-transmitting column or the second light-transmitting column is made of glass or plastic.

10. The inspection well waterproof box according to claim 1, characterized in that: The upper cover and the lower cover of the inspection well waterproof box are each provided with a fixing hole, and the two fixing holes are symmetrically arranged; the first light-transmitting column and the second light-transmitting column of the condensation state sensing device are respectively inserted into the two fixing holes to achieve stable installation.

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