Condensation state sensing device

Abstract

The application provides a dew condensation state sensing device arranged in a manhole waterproof box, comprising: a first base and a second base, the first base and the second base are symmetrically arranged; a first light transmission column and a second light transmission column, the first light transmission column vertically penetrates the first base and is arranged opposite to the second light transmission column, and the second light transmission column vertically penetrates the second base; a hygroscopic salt column, one end of the hygroscopic salt column is connected to the first light transmission column, and the other end of the hygroscopic salt column is connected to the second light transmission column, and the hygroscopic salt column is used for monitoring the dew condensation state in the manhole waterproof box. By taking the hygroscopic salt column as a monitoring medium, an optical monitoring method based on physical change is realized, and the monitoring accuracy and the survivability of the device are significantly improved. The monitoring method is direct and accurate, and even in the case of local circuit short circuit, the normal monitoring function can be maintained.

Description

Technical Field

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

[0002] In the monitoring and management of urban underground drainage networks, electronic equipment inside the waterproof boxes of inspection wells faces complex environmental challenges. Due to temperature differences in sewage at different times and under different conditions, especially during nighttime or rainy weather, and the potential for high temperature and humidity within the network, condensation can occur inside the equipment. Condensation can cause irreversible damage to electronic components and circuits, and may also trigger short circuits, affecting the stability and safety of the equipment. Therefore, effective detection and alarm systems for condensation inside enclosed equipment are crucial.

[0003] Currently, most condensation sensors on the market use capacitive sensor technology, detecting condensation by sensing changes in capacitance. However, the printed circuit structure of this type of sensor is difficult to effectively simulate the condensation state of specific locations such as solder pins and battery pins, leading to limitations in practical applications. Furthermore, capacitive sensors heavily rely on continuous power supply; if a local circuit short-circuits due to condensation, the sensor may also be short-circuited, failing to issue an alarm in time and thus failing to provide its intended protective function.

[0004] Therefore, how to use non-electronic sensors to monitor the moisture level inside the waterproof box of the inspection well has become an urgent technical problem to be solved. Summary of the Invention

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

[0006] This invention discloses a condensation monitoring device, installed inside a waterproof box in an inspection well, comprising:

[0007] The first base and the second base are arranged symmetrically, one above the other.

[0008] A first light-transmitting column and a second light-transmitting column, wherein the first light-transmitting column passes vertically through the first base and is positioned opposite to the second light-transmitting column, and the second light-transmitting column passes vertically 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 to the second light-transmitting column, is used to monitor the condensation state inside the inspection well waterproof box. When the hygroscopic salt column is dry and has not absorbed moisture, it is optically opaque, preventing light path conduction between the first and second light-transmitting columns. When the hygroscopic salt column absorbs moisture from inside the inspection well waterproof box, its transparency increases, allowing light path conduction between the first and second light-transmitting columns, thus indicating a risk of condensation on the electronic components inside the inspection well waterproof box.

[0010] In one implementation device of this application, an LED light strip is further included, which is wrapped around the outer periphery of the second light-transmitting column and a plurality of LED beads are evenly distributed along the axial direction of the second light-transmitting column for actively emitting light.

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

[0012] In one implementation device of this application, a first recessed light guide groove is located at the connection between the photoresistor ring and the first light-transmitting column, and a second recessed light guide groove is located at the connection between the LED light strip and the second light-transmitting column; wherein...

[0013] The groove surface and lower cut surface of the second recessed light guide groove are treated to reflect light, while the upper cut surface is treated to transmit light. This is to allow the light emitted by the LED beads to be incident on the wall of the second recessed light guide groove at a small angle, thereby achieving effective reflection and transmission of light.

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

[0015] In one implementation device of this application, the recessed surface and lower cut surface of the recessed light guide groove are treated to reflect light, and the upper cut surface is treated to transmit light, so that the light emitted by the LED lamp bead is incident on the wall of the recessed light guide groove at a small angle, thereby achieving effective reflection and transmission of light.

[0016] In one device of this application, the groove surface of the upper and lower concave light guide grooves is roughened, and the upper and lower cut surfaces are light-transmitting. The roughened surface captures part of the refracted light from inside the first light-transmitting column and ensures that part of the light can continue to be transmitted for subsequent external light-assisted detection.

[0017] In one implementation device of this application, the moisture-absorbing salt column is provided with a plurality of moisture-absorbing windows, which are used to add moisture-absorbing salt.

[0018] In one implementation device of this application, a condensation guide needle is further included. The condensation guide needle is disposed at a moisture-absorbing window of the moisture-absorbing salt column, and is used to collect water vapor inside the waterproof box of the inspection well and guide water droplets to flow down along the condensation guide needle into the moisture-absorbing salt inside the moisture-absorbing salt column after condensation.

[0019] In one implementation device of this application, a condensation guide line is further included. One end of the condensation guide line is fixed to the first base, and the other end is fixed to a moisture-absorbing window of the moisture-absorbing salt column. The condensation guide line is a small strand of silk thread that has been soaked in salt solution and then air-dried. It is used to collect water vapor inside the inspection well waterproof box and guide water droplets to flow down the condensation guide line into the moisture-absorbing salt inside the moisture-absorbing salt column after condensation.

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

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

[0022] In one implementation device of this application, the upper cover and 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.

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

[0024] (1) By using a hygroscopic salt column as the monitoring medium, an optical monitoring method based on physical changes was realized, significantly improving the accuracy of monitoring and the survivability of the device. In a dry state, the hygroscopic salt column crystal particles are more obvious, and the air pores between the salt particles cause the salt column to be opaque, effectively blocking the light path. However, when moisture is absorbed, the air pores between the salt particles are filled with salt liquid, increasing its transparency and allowing the light path to pass. This monitoring method is direct, accurate, and does not depend 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. Moreover, the hygroscopic effect of the salt column allows its humidity critical point to be 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, enabling real-time monitoring of condensation status. Through the light-guiding channel formed by the light-transmitting plastic column and its moisture-absorbing salt column, and through the principle of total internal reflection of optical fiber, the photoresistor on the LED light strip converts the received light signal into an electrical signal, providing real-time data for the monitoring system, and realizing active monitoring and rapid response to condensation status.

[0026] (3) The recessed vertical surface and lower cut surface of the second recessed light guide groove are treated for reflectivity, while the upper cut surface is treated for light transmission. Similarly, the recessed vertical surface of the first recessed light guide groove is treated for roughness, while the upper and lower cut surfaces are treated for light transmission. This optimizes the guidance and distribution of light, improving the uniformity of the light signal and the accuracy of monitoring. Simultaneously, the hygroscopic salt column is equipped with multiple moisture-absorbing windows, facilitating the addition of hygroscopic salt, enhancing the maintainability of the device, and ensuring long-term effective monitoring.

[0027] (4) Through the design of condensation guide needles or condensation guide lines and water storage boxes, condensation droplets can be effectively collected and guided to prevent droplets from falling directly onto electronic devices, thereby avoiding potential short circuits or damage risks, improving the safety of the monitoring device, and protecting the electronic devices inside the inspection well waterproof box. Attached Figure Description

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

[0029] Figure 2 A schematic diagram of the recessed light guide groove and photoresistor in one embodiment of this disclosure is shown.

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

[0031] Figure 4 A schematic diagram of the structure of the waterproof box for the inspection well is shown in one embodiment of this disclosure.

[0032] Component designation explanation

[0033] First base 11

[0034] Second base 12

[0035] First light-transmitting column 21

[0036] Second light-transmitting column 22

[0037] Moisture-absorbing salt column fixing sleeve 31

[0038] 311 Hygroscopic Salt Column

[0039] Moisture absorption window 32

[0040] Photoresistor ring 41

[0041] LED light strip 42

[0042] First recessed light guide groove 51

[0043] First recessed facade 511

[0044] First upper section 512

[0045] First lower section 513

[0046] Second recessed light guide groove 52

[0047] Second recessed 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 Implementation

[0056] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0057] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0058] The technical solutions of the present invention will now be described in detail with reference to the accompanying drawings.

[0059] like Figure 1The diagram shows the overall structure of the condensation state monitoring device disclosed herein. The condensation state monitoring device includes: a first base 11, a second base 12, a first light-transmitting column 21, a second light-transmitting column 22, and a moisture-absorbing salt column 311 (located inside the moisture-absorbing salt column fixing sleeve 31, and visible through the moisture-absorbing window 32).

[0060] The first base 11 and the second base 12 are arranged symmetrically in the upper and lower positions.

[0061] Specifically, the first base 11 and the second base 12 are the supporting structures of this condensation monitoring device. The first base 11 is designed to be fixed to the bottom of the inspection well waterproof box 9, while the second base 12 is correspondingly fixed to the top of the inspection well waterproof box 9. Their symmetrical arrangement ensures the uniform distribution and balance of the device inside the waterproof box. The first base 11 and the second base 12 are structurally mirror-symmetrical; that is, the structure of the second base 12 is the inverted counterpart of the first base 11, ensuring functional and structural consistency in different positions. This symmetrical design not only provides aesthetic appeal but also enhances the stability and balance of the device, allowing the first light-transmitting column 21 and the second light-transmitting column 22 to be vertically aligned inside the waterproof box, thereby ensuring proper light path conduction and accurate monitoring.

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

[0063] Specifically, the first light-transmitting column 21 is designed to pass vertically from one side of the first base 11 to the other, while the second light-transmitting column 22 correspondingly passes vertically from one side of the second base 12 to the other. These two columns are arranged in a corresponding manner to ensure that the light 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 straight-line transmission of the light path, reducing light signal loss and distortion, but also facilitates connection with the hygroscopic salt column 311, allowing the light signal to smoothly monitor the condensation state by observing changes in 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, their light transmittance, chemical resistance, temperature resistance, and mechanical strength need to be considered. Glass is chosen due to its excellent temperature resistance and chemical stability, while plastic is considered due to its lightweight 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 maintain its optical performance over a long period of time.

[0066] The hygroscopic salt column 311, with one end connected to the first light-transmitting column 21 and the other end connected to the second light-transmitting column 22, is used to monitor the condensation state inside the inspection well waterproof box 9. When the hygroscopic salt column 311 is dry and has not absorbed moisture, it is optically opaque, preventing light path conduction between the first light-transmitting column 21 and the second light-transmitting column 22. When the hygroscopic salt column 311 absorbs moisture from inside the inspection well waterproof box 9, its transparency increases, allowing light path conduction between the first light-transmitting column 21 and the second light-transmitting column 22, thus indicating a risk of condensation on the electronic components inside the inspection well waterproof box 9.

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

[0068] Under normal operating conditions, when the hygroscopic salt column 311 is dry and has not absorbed moisture, it exhibits opaque optical properties due to the characteristics of its internal structure, thereby preventing light signals from being transmitted from the first light-transmitting column 21 to the second light-transmitting column 22, i.e., the light path is blocked. 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 moisture, especially condensation, occurs inside the inspection well waterproof box 9, the hygroscopic salt column 311 begins to absorb the surrounding moisture. As the hygroscopic salt column 311 absorbs moisture, its internal structure changes, causing its optical properties to change from opaque to transparent or translucent. This increased transparency allows the light path to be partially or completely open, triggering the monitoring system to detect the change in the light signal, thereby alerting the user to the risk of condensation on the electronic components inside the inspection well waterproof box 9.

[0070] The design of the hygroscopic salt column 311 not only provides an intuitive means of monitoring condensation, but also achieves 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 environments with unstable power supplies or potential circuit failures, where the monitoring function of the hygroscopic salt column 311 remains unaffected, ensuring the continuity and accuracy of monitoring.

[0071] In some embodiments, a moisture-absorbing salt column fixing sleeve 31 is provided outside the moisture-absorbing salt column, 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 to store the moisture-absorbing salt column 311.

[0072] Specifically, the main function of the moisture-absorbing salt column fixing sleeve 31 is to fix the moisture-absorbing salt column 311 and prevent it from shifting or being damaged during operation. A certain gap is designed between the moisture-absorbing 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 moisture-absorbing salt column 311 to flow through the gap towards the water storage box 8. This flow-guiding design effectively prevents salt solution from splashing inside the waterproof box, thereby protecting the internal circuitry from corrosion or short circuits.

[0073] In some embodiments, since the moisture-absorbing salt will be lost during use, the moisture-absorbing salt column fixing sleeve 31 is provided with a plurality of moisture-absorbing windows 32, which are used to add moisture-absorbing salt.

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

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

[0076] In one embodiment of this disclosure, such as Figure 2As shown, the condensation monitoring device also includes an LED light strip 42, which is wrapped around the outer periphery of the second light-transmitting column 22 and has multiple LED beads evenly distributed along the axial direction of the second light-transmitting column 22 for actively emitting light; and a photoresistor ring 41, which is wrapped around the outer periphery of the first light-transmitting column 21 and has photoresistors on each surface for converting the received light into electrical signals to monitor the condensation state 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, with multiple LED beads evenly distributed along the axial direction of the second light-transmitting column. This configuration allows the LED light strip 42 to actively emit light, penetrating the hygroscopic salt column 311, thereby monitoring the condensation state inside the inspection well's 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 light signals under various environmental conditions.

[0078] The photoresistor ring 41 is designed to surround the outer periphery of the first light-transmitting column 21, and each surface of the ring is equipped with a photoresistor. 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 optical signals into electrical signals. These electrical signals can then be processed by the control unit in the device to determine whether condensation exists inside the inspection well waterproof box.

[0079] When the internal environment of the inspection well's waterproof box is dry and the hygroscopic salt column 311 has not absorbed moisture, its optical properties are opaque, blocking or weakening the conduction of light. As the ambient humidity increases, the hygroscopic salt column begins to absorb moisture, increasing its transparency and allowing more light to pass through. The photoresistor on the photoresistor ring detects the changes in the light transmitted through the light column and converts these changes into electrical signals, enabling real-time monitoring of the condensation state.

[0080] In some implementations, the following methods are used Figure 2 It also includes a first recessed light guide groove 51 located at the connection between the photoresistor ring 41 and the first light-transmitting post 21, and a second recessed light guide groove 52 located at the connection between the LED light strip 42 and the second light-transmitting post 22; wherein...

[0081] The second recessed light guide groove 52 has a reflective surface 521 and a lower cut surface 523, while the second upper cut surface 522 is light-transmitting. This allows the light emitted by the LED beads to strike the wall of the second recessed light guide groove at a small angle, achieving effective reflection and transmission of the light. It also enhances the utilization rate of the optical signal, ensuring efficient transmission of the optical signal to the photoresistor ring.

[0082] The first recessed light guide groove 51 has a rough surface treatment on the first groove surface 511, and the first upper cut surface 512 and the first lower cut surface 513 have a light-transmitting treatment. The rough surface captures part of the refracted light from inside 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, through the coordinated operation of the first recessed light guide groove 51 and the second recessed light guide groove 52, the monitoring device can effectively collect and transmit light signals. The light signal emitted by the LED light strip 42 is transmitted through the second recessed light guide groove 52, while the photoresistor ring 41 receives the light signal from the first light-transmitting column 21 through the first recessed light guide groove 51. These light 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 moisture inside the inspection well waterproof box 9, such as Figure 3 As shown, in some embodiments, a condensation guide needle 71 is also included. The condensation guide needle 71 is disposed at one of the moisture-absorbing windows 32 of the moisture-absorbing salt column fixing sleeve 31, and is used to collect water vapor inside the inspection well waterproof box 9 and guide water droplets to flow downward along the condensation guide needle 71 into the moisture-absorbing salt column 311 after condensation.

[0085] Specifically, the condensation guide needle 71 is positioned at one of the moisture-absorbing windows 32 of the moisture-absorbing salt column fixing sleeve 31. After water vapor condenses, the water droplets formed are guided downwards along the condensation guide needle 71 into the moisture-absorbing salt column 311. The condensation guide needle 71, through its physical structure, provides a flow path for the condensed water droplets, allowing them to directly contact the moisture-absorbing salt column 311. This design not only improves the response speed of the moisture-absorbing salt column 311 to condensed water vapor but also enhances the sensitivity of the monitoring device to changes in condensation conditions, thereby enabling more accurate monitoring and early warning of condensation risks.

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

[0087] To collect water vapor condensate droplets guided to their respective bases by the hygroscopic salt columns 311 for effective collection and subsequent processing, in some embodiments, each of the first base 11 and the second base 12 is provided with a water storage box 8 for collecting water vapor condensate droplets guided to their respective bases by the hygroscopic salt column fixing sleeve 31. Preferably, the distance between the inner wall of the water storage box 8 and the outer wall of the first light-transmitting column 21 and the second light-transmitting column 22 is less than 2 mm, ensuring that the liquid in the water storage box 8 does not leak out without tilting.

[0088] Since the condensation state sensing device is integrated into the inspection well waterproof box 9, such as Figure 4 As shown, in some embodiments, the upper and lower covers 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 and lower covers of the inspection well waterproof box 9 each have a fixing hole 91. These two fixing holes 91 are designed to provide a stable mounting interface for the first light-transmitting column 21 and the second light-transmitting column 22 of the condensation state sensing device. The fixing holes 91 ensure that the condensation state sensing device can form an integrated structure with the inspection well waterproof box 9, improving overall stability and reliability. The fixing holes 91 are symmetrically arranged on the upper and lower covers. This symmetrical layout not only ensures the balanced installation of the condensation state sensing device but also ensures accurate alignment of the light path, thereby improving the optical performance and monitoring accuracy of the monitoring device. The size and shape of the fixing holes 91 match the outer diameter of the light-transmitting columns to ensure that the light-transmitting columns can be tightly inserted and are not easily dislodged. The edges of the fixing holes 91 can be designed with chamfers or threads to facilitate the fixing and sealing of the light-transmitting columns.

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

[0091] This condensation sensing device is integrated into a waterproof box within the inspection wells of urban underground drainage networks to monitor and provide early warning of condensation phenomena. Key components of the device include a first and second base arranged symmetrically, mounted on the top and bottom of the waterproof box respectively, and a first and second light-transmitting column perpendicularly passing through these bases. The light-transmitting column is securely installed via fixing holes, while a moisture-absorbing salt column connects the two light-transmitting columns to monitor the condensation status.

[0092] When powered on, the device's monitoring process is as follows: An LED strip surrounding the second light-transmitting column actively emits light, while LED beads evenly distributed along the column's axis provide a continuous light source for monitoring condensation inside the waterproof box. The light signal is effectively reflected and transmitted to the hygroscopic salt column through the reflection and transmission processing of the second recessed light guide groove. When condensation occurs inside the inspection well, the hygroscopic salt column absorbs moisture, increasing its transparency and allowing the light signal to be conducted through it to the first light-transmitting column. The first recessed light guide groove captures some of the refracted light from inside the first light-transmitting column and ensures continued light transmission to the photoresistor ring through surface roughening and transmission processing. The light received by the photoresistor ring is converted into an electrical signal to monitor and analyze the condensation status, enabling real-time early warning of condensation risks.

[0093] When the internal temperature of the waterproof box returns to its original level, the saturated vapor pressure of the water vapor increases, and some of the moisture on the hygroscopic salt column evaporates, restoring the column to its opaque state. At this point, the alarm is deactivated. If condensation inside the waterproof box is caused by increased humidity, the entire hygroscopic salt column will be soaked, leading to recrystallization and a more regular crystal arrangement. This increases light transmittance, causing the device to remain in an alarm state, prompting maintenance personnel to disassemble and perform maintenance.

[0094] In the event of a power outage, the monitoring process of the device can be performed manually. Specifically, shine a flashlight on one end of the mounting hole and observe the other end. If the brightness of the other end's mounting hole is higher, it indicates that the internal salt column has absorbed moisture, suggesting possible condensation inside.

[0095] Over time, the amount of hygroscopic salt in the hygroscopic salt column may decrease. At this point, new hygroscopic salt can be added through the moisture absorption window to ensure the continuous and effective operation of the device. Condensation guide needles and condensation guide lines (small strands of silk soaked in salt solution and then air-dried) collect condensed water droplets from the moisture absorption window of the hygroscopic salt column and guide them back into the column, preventing damage to electronic components from the droplets. Water storage boxes are provided on both the first and second bases to collect water vapor condensate droplets guided by the hygroscopic salt column, facilitating the management and discharge of these droplets.

[0096] In summary, the condensation state sensing device provided in this disclosure uses a hygroscopic salt column as the monitoring medium, utilizing its transparency changes after absorbing moisture to achieve optical monitoring, thus improving monitoring accuracy and device stability. Symmetrically arranged LED light strips and photoresistor rings enable active light signal monitoring, rapidly responding to changes in condensation. The design of two recessed light guide grooves and the moisture-absorbing window of the hygroscopic salt column optimizes light distribution and device maintainability. Condensation guide needles, condensation guide lines, and a water storage box effectively collect condensate droplets, preventing damage to electronic components and 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 invention. Any person skilled in the art can 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 those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A condensation state sensing device, disposed inside a waterproof box in an inspection well, characterized in that, include: The first base and the second base are arranged symmetrically, one above the other. A first light-transmitting column and a second light-transmitting column, wherein the first light-transmitting column passes vertically through the first base and is positioned opposite to the second light-transmitting column, and the second light-transmitting column passes vertically through the second base; A hygroscopic salt column, with one end connected to the first light-transmitting column and the other end connected to the second light-transmitting column, is used to monitor the condensation state inside the inspection well waterproof box. When the hygroscopic salt column is dry and has not absorbed moisture, the air pores between the salt particles cause the column to be opaque, preventing light path conduction between the first and second light-transmitting columns. When the hygroscopic salt column absorbs moisture from inside the inspection well waterproof box, the air pores between the salt particles are filled with salt liquid, increasing transparency and allowing light path conduction between the first and second light-transmitting columns, thus indicating a risk of condensation on the electronic components 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 wrapped around the outer periphery of the second light-transmitting column, and multiple LED beads are evenly distributed along the axial direction of the second light-transmitting column for actively emitting light. A photoresistor ring is wrapped around the outer periphery of the first light-transmitting column, and each surface is provided with a photoresistor 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 recessed light guide groove located at the connection between the photoresistor ring and the first light-transmitting column, and a second recessed light guide groove located at the connection between the LED strip and the second light-transmitting column; wherein... The groove surface and lower cut surface of the second recessed light guide groove are treated to reflect light, and the upper cut surface is treated to transmit light, so that the light emitted by the LED lamp bead is incident on the wall surface of the second recessed light guide groove at a small angle, thereby achieving effective reflection and transmission of light. The groove surface of the first recessed light guide groove is roughened, and the upper and lower cut surfaces are made transparent. The roughened surface captures some of the refracted light from inside the first light-transmitting column and ensures that some light can continue to be transmitted for subsequent external light-assisted detection.

4. The condensation state sensing device according to claim 1, characterized in that, The moisture-absorbing salt column is provided with a moisture-absorbing salt column fixing sleeve, which is fitted on the first light-transmitting column and the second light-transmitting column to connect the first light-transmitting column and the second light-transmitting column and to store the moisture-absorbing salt column.

5. The condensation state sensing device according to claim 4, characterized in that, The moisture-absorbing salt column fixing sleeve is provided with multiple moisture-absorbing windows, which are used to add moisture-absorbing salt.

6. The condensation state sensing device according to claim 5, characterized in that, It also includes a condensation guide needle, which is disposed at a moisture-absorbing window of the moisture-absorbing salt column fixing sleeve, for collecting water vapor inside the inspection well waterproof box and guiding water droplets down the condensation guide needle into the moisture-absorbing 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-absorbing window of the moisture-absorbing salt column fixing sleeve. The condensation guide line is a small strand of silk thread that has been soaked in salt solution and then air-dried. It is used to collect water vapor inside the inspection well waterproof box and guide water droplets to flow down the condensation guide line into the moisture-absorbing salt column after condensation.

8. The condensation state sensing device according to claim 1, characterized in that, Each of the first and second bases is provided with a water storage box for collecting excess water vapor condensation droplets from the hygroscopic salt column.

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

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

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