An environmental monitoring simulation device for an underground distribution room

Abstract

This invention provides an environmental monitoring simulation device for underground power distribution rooms, comprising a housing; multiple environmental sensors integrated within the housing for collecting environmental parameters of various dimensions within the housing and outputting corresponding detection signals; a fault scenario simulation component placed within the housing for simulating various abnormal environmental scenarios within the housing; and an environmental control unit that receives the detection signals, identifies the current abnormal environmental scenario, displays abnormal data in the current abnormal environmental scenario, and generates corresponding alarm information. By integrating multiple environmental sensors, the fault scenario simulation component, and the environmental control unit into the same housing, a portable, centralized, and reusable multi-parameter environmental monitoring simulation platform is constructed. This platform can realistically reproduce various typical fault scenarios within underground power distribution rooms under controlled conditions and simultaneously demonstrate the real-time acquisition, identification, and alarm linkage response process of the environmental control unit for various abnormal signals.

Description

Technical Field

[0001] This invention relates to the field of power equipment, and more particularly to an environmental monitoring simulation device for underground power distribution rooms. Background Technology

[0002] Underground power distribution rooms, cable shafts, and integrated utility tunnels—whether enclosed or semi-enclosed—are crucial components of urban power systems. These facilities typically suffer from confined spaces, limited ventilation, and dampness, creating unfavorable environmental conditions that can lead to abnormal temperature and humidity, accumulation of toxic and harmful gases, localized overheating of equipment, and unauthorized intrusion, posing significant threats to power supply reliability and the safety of maintenance personnel. To address these risks, existing technologies widely employ environmental monitoring systems for real-time monitoring of underground power facilities. These systems typically integrate various sensing elements, including temperature and humidity sensors, water immersion sensors, gas detection sensors, thermal imaging sensors, wind speed sensors, and access control sensors, and are equipped with an environmental control unit (ECU) to collect and process data from these sensors.

[0003] However, existing environmental monitoring systems mostly adopt a decentralized, independently operated deployment approach, lacking effective linkage mechanisms between sensors and making it difficult to intuitively present the response logic of multi-parameter coordinated alarms. Especially in application scenarios such as technical training, solution demonstrations, or product promotion, the inaccessibility and safety risks of real underground environments prevent the on-site reproduction of various fault conditions, resulting in unintuitive training effects and insufficient persuasiveness in solution demonstrations. Currently, there is a lack of a portable, safe, and repeatable integrated simulation platform capable of realistically recreating various environmental risk scenarios in underground power distribution rooms under controlled conditions and simultaneously demonstrating the monitoring response and alarm linkage process of ECUs. Summary of the Invention

[0004] The purpose of this invention is to solve the problem in the prior art of lacking a portable integrated verification platform that can centrally simulate multiple abnormal environmental scenarios in underground power distribution rooms under controlled conditions and intuitively demonstrate the monitoring response and alarm linkage process of the environmental control unit.

[0005] This invention provides a sensor monitoring simulation device for an underground power distribution room environmental control unit, comprising: Box; Multiple environmental sensors are integrated inside the enclosure to collect environmental parameters in various dimensions within the enclosure and output corresponding detection signals. A fault scenario simulation component is placed inside the enclosure and is used to simulate various abnormal environmental scenarios within the enclosure. The environmental control unit receives the detection signal, identifies the current abnormal environmental scenario, displays the abnormal data in the current abnormal environmental scenario, and generates corresponding alarm information.

[0006] Furthermore, the plurality of environmental sensors include at least two of the following: temperature and humidity sensors, water immersion sensors, wind speed sensors, gas detection sensors, thermal imaging sensors, and access control sensors.

[0007] Furthermore, the sensing end of the water immersion sensor extends into a pre-set liquid containment device inside the box, and liquid is injected into the liquid containment device to simulate a water accumulation alarm scenario.

[0008] Furthermore, the box is equipped with an adjustable speed airflow generator, and the output intensity of the adjustable speed airflow generator can be adjusted to simulate wind speed changes under different ventilation conditions.

[0009] Furthermore, the box is equipped with a gas injection device, which simulates combustible gas or toxic gas alarm scenarios by injecting different types of gas into the box.

[0010] Furthermore, the box is equipped with a heating element, and the temperature of the heating element can be adjusted to simulate thermal hazards and early signs of fire.

[0011] Furthermore, the access control sensor includes a status detection element, which is placed at the movable door panel of the enclosure. The opening and closing of the movable door panel simulates an illegal intrusion alarm scenario.

[0012] Furthermore, the surface of the enclosure is provided with multiple status indicator lights, each of which corresponds to one of the multiple environmental sensors and is used to indicate the real-time alarm status of the corresponding environmental sensor.

[0013] Furthermore, the environmental control unit communicates with the plurality of environmental sensors through at least one of a digital input / output interface, an RS232 / RS485 interface, and a wired network interface.

[0014] Furthermore, the environmental control unit also supports remote transmission of environmental data and alarm information to the PLC or remote station platform via wired or wireless networks.

[0015] Compared with existing technologies, this invention has at least the following beneficial effects: By integrating multiple environmental sensors, fault scenario simulation components, and environmental control units into the same enclosure, a portable, centralized, and repeatable multi-parameter environmental monitoring simulation platform is constructed. Under controlled conditions, it can realistically reproduce various typical fault scenarios in underground power distribution rooms, such as abnormal temperature and humidity, water accumulation, poor ventilation, accumulation of toxic and harmful gases, equipment overheating, and illegal intrusion. It also simultaneously demonstrates the real-time acquisition, identification, and alarm linkage response process of the environmental control unit for various abnormal signals. This effectively improves the problems in existing technologies, such as the lack of accessibility to real underground environments and the dispersed and independent operation of sensors, which result in unintuitive training effects and insufficient persuasiveness in solution demonstrations. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0017] Figure 1 This is a front view of the sensor monitoring simulation device for the underground power distribution room environmental control unit in one embodiment of the present invention; Figure 2 This is a schematic diagram of the internal structure of the sensor monitoring simulation device of the underground power distribution room environmental control unit in one embodiment of the present invention.

[0018] Among them, 1-wired network interface; 2-box cover; 3-lower box body; 4-middle shelf; 5-temperature and humidity sensor; 6-water immersion sensor; 7-thermal imaging sensor; 8-gas detection sensor; 9-wind speed sensor; 10-liquid container; 11-adjustable airflow generator. Detailed Implementation

[0019] The present invention will now be described in more detail with reference to the accompanying drawings, which illustrate preferred embodiments of the invention. It should be understood that those skilled in the art can modify the invention described herein while still achieving its advantageous effects. Therefore, the following description should be understood as being broadly known to those skilled in the art and is not intended to limit the invention.

[0020] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0021] The invention is described more specifically by way of example in the following paragraphs with reference to the accompanying drawings. The advantages and features of the invention will become clearer from the following description. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the invention.

[0022] In the prior art, various sensors of the underground power distribution room environment monitoring system are usually deployed in a distributed and independent manner at the actual engineering site, each sensor operates independently of the others, and there is a lack of a unified integrated carrier. This technical prejudice has led to the widespread consensus in the industry that the linked monitoring demonstration of multiple types of sensors must rely on a real engineering site environment, which greatly limits application scenarios such as training, testing and solution demonstration. The present application breaks the above-mentioned technical prejudice, integrates multiple types of sensors and fault scenario simulation components into the same box, and realizes synchronous collection of multi-dimensional environmental parameters and linked alarm demonstration in a controlled environment.

[0023] However, integrating the above multiple types of sensors and simulation components into the same box is not a simple physical superposition, but requires overcoming various technical problems. First, the heating elements, airflow generating devices and gas injection devices will interfere with each other on the internal temperature field, airflow field and gas concentration field of the box during operation. If the positions of the modules are improperly set, the environmental parameters collected by the sensors will be distorted, affecting the accuracy of alarm judgment. To this end, the present application imposes targeted constraints on the installation positions of each module in the box, for example, the gas detection sensor must be installed away from the heating element to avoid hot airflow interfering with gas concentration detection, the wind speed sensor must be arranged on the forward airflow path of the airflow generating device to ensure the accuracy of wind speed measurement, and the sensing end of the water immersion sensor must maintain a specific vertical distance from the liquid containing device to ensure the liquid level detection sensitivity.

[0024] Secondly, parallel transmission of multiple signal types such as switching value, analog value and digital value is involved between the multiple types of sensors and the environment control unit. If the wiring design is unreasonable, the electromagnetic interference between the strong current loops and the weak current signal cables will seriously affect the signal transmission quality, resulting in false alarms or missed alarms. To this end, the present application arranges the strong and weak current cables in separate zones inside the box, the signal cables of various sensors adopt shielded wires and are tied and routed separately, and maintain a specified distance from the power supply cables of strong current equipment such as heating elements and airflow generating devices, which fundamentally reduces the risk of electromagnetic interference inside the box and ensures the stable and reliable transmission of multi-sensor signals.

[0025] In addition, the operation sequence between each fault scenario simulation component also needs to be reasonably planned. If multiple types of simulation components are triggered at the same time, the internal environmental parameters of the box will be superimposed and coupled, making it difficult for the environment control unit to accurately distinguish the independent alarm signals of various abnormal scenarios. To this end, the present application sets a scenario isolation mechanism in the control logic of the environment control unit. The operator can trigger each fault scenario simulation component one by one according to the scenario type through the operation panel, or select a multi-scenario linked trigger mode. The environment control unit performs classified processing and independent display on multiple paths of alarm information according to the priority of the detection signals of each sensor and the threshold judgment rule, so that the alarm information of each type of abnormal scenario can be accurately identified and presented.

[0026] Specifically, this embodiment provides a sensor monitoring simulation device for an underground power distribution room environmental control unit. Please refer to [the relevant documentation]. Figures 1-2 ,include: Box enclosure.

[0027] Multiple environmental sensors are integrated inside the enclosure to collect environmental parameters in various dimensions within the enclosure and output corresponding detection signals.

[0028] A fault scenario simulation component is placed inside the enclosure and is used to simulate various abnormal environmental scenarios within the enclosure.

[0029] The environmental control unit receives the detection signal, identifies the current abnormal environmental scenario, displays the abnormal data in the current abnormal environmental scenario, and generates corresponding alarm information.

[0030] In one specific embodiment, please refer to Figure 1 The device includes a portable metal housing with an observation window and an operation panel on its surface. The housing comprises a cover 2 and a lower housing 3. The top layer of the cover 2 is sealed with an acrylic sheet for easy observation of the internal working status. The lower housing 3 is divided into a middle layer and a bottom layer by a middle plate 4. The middle layer is used to fix various environmental sensors and fault scenario simulation components, etc., with each device mounted on an aluminum plate to ensure structural stability. The bottom layer contains electrical connection components such as adapters and terminal blocks. A wired network interface 1 is located on the side wall of the housing for communication with an external network or remote platform.

[0031] The fault scenario simulation component simulates various abnormal environmental states in a controlled manner inside the enclosure. Multiple environmental sensors detect changes in environmental parameters caused by the actions of the fault scenario simulation component in real time and continuously output the corresponding detection signals to the environmental control unit. The environmental control unit analyzes and identifies the received detection signals in real time, determines the type of abnormal environmental scenario triggered, and intuitively presents the corresponding abnormal parameter data and alarm information on the display interface. This fully reproduces the complete working loop of the underground power distribution room environmental monitoring system within the controlled space of the enclosure, from the occurrence of abnormal states, sensor signal acquisition to the identification and response of the environmental control unit, achieving centralized and visual simulation demonstration of multiple fault scenarios.

[0032] Furthermore, the plurality of environmental sensors include at least two of the following: a temperature and humidity sensor 5, a water immersion sensor 6, a wind speed sensor 9, a gas detection sensor 8, a thermal imaging sensor 7, and an access control sensor.

[0033] In one possible embodiment of the invention, reference is made to... Figure 2The multiple environmental sensors include a combination of six types of sensors: temperature and humidity sensor 5, water immersion sensor 6, wind speed sensor 9, gas detection sensor 8, thermal imaging sensor 7, and access control sensor (not shown in the figure). They are integrated and installed in corresponding positions inside the enclosure to comprehensively cover typical abnormal environmental scenarios that may occur in underground power distribution rooms, such as abnormal temperature and humidity, water accumulation, poor ventilation, accumulation of toxic and harmful gases, equipment overheating, and illegal intrusion. This enables the synchronous acquisition and monitoring of multi-dimensional environmental parameters inside the enclosure.

[0034] In another possible embodiment, depending on different training or demonstration needs, at least two of the aforementioned environmental sensors can be combined and configured. For example, when only a scenario involving temperature, humidity, and water accumulation alarm needs to be demonstrated, a combination of temperature and humidity sensor 5 and water immersion sensor 6 can be used. When a scenario involving gas leakage and equipment overheating needs to be demonstrated, a combination of gas detection sensor 8 and thermal imaging sensor 7 can be used. This flexible sensor combination allows the device to be configured specifically according to the needs of actual application scenarios, reducing device costs and increasing usability while meeting specific demonstration objectives.

[0035] Furthermore, the sensing end of the water immersion sensor 6 extends into a pre-set liquid containing device 10 inside the box, and liquid is injected into the liquid containing device 10 to simulate a water accumulation alarm scenario.

[0036] In one specific embodiment, the liquid containing device 10 is a shallow dish container fixedly installed at the bottom of the tank. The water immersion sensor 6 is vertically installed above the liquid containing device 10, with its sensing end extending downwards to a preset liquid level detection height inside the liquid containing device 10. Initially, the liquid containing device 10 is empty, the water immersion sensor 6 is in normal standby mode, and the environmental control unit displays no alarm information.

[0037] When simulating a water accumulation alarm scenario in an underground power distribution room, the operator injects liquid into the liquid container 10 through the pre-installed water inlet on the enclosure. As the liquid level gradually rises to the height of the sensing end of the water immersion sensor 6, the sensor is triggered and outputs a detection signal to the environmental control unit. The environmental control unit then identifies the current abnormal water accumulation scenario and displays the water immersion alarm information on the display interface. After the demonstration is completed, the operator can drain the liquid from the liquid container 10 through the drain port, and the device returns to its initial state, allowing for repeated simulations of the water accumulation alarm scenario.

[0038] Furthermore, the box is equipped with an adjustable speed airflow generator 11, which can simulate wind speed changes under different ventilation conditions by adjusting the output intensity of the adjustable speed airflow generator 11.

[0039] In one specific embodiment, the adjustable airflow generator 11 is a DC speed-regulating fan, installed on the inner side wall of the enclosure. The wind speed sensor 9 is installed inside the enclosure at a position that cooperates with the DC speed-regulating fan, used to collect airflow speed parameters inside the enclosure in real time. The DC speed-regulating fan is connected to a speed control knob on the external control panel of the enclosure via a speed control circuit. The operator can directly adjust the fan speed through the knob, thereby changing the airflow speed inside the enclosure.

[0040] When simulating a poorly ventilated underground power distribution room, the operator adjusts the speed control knob to a low speed setting. The airflow speed inside the enclosure then decreases to below the preset alarm threshold. The detection signal collected by the wind speed sensor 9 triggers the environmental control unit to generate a poor ventilation alarm. When simulating normal or excessive ventilation, the operator increases the fan speed accordingly. The wind speed sensor 9 reflects the change in airflow speed in real time, and the environmental control unit updates the wind speed data on the display interface simultaneously, fully replicating the monitoring and response process of the underground power distribution room under different ventilation conditions.

[0041] Furthermore, the box is equipped with a gas injection device (not shown in the figure), which simulates combustible gas or toxic gas alarm scenarios by injecting different types of gases into the box.

[0042] In one specific embodiment, the gas injection device includes a gas injection port disposed on the inner wall of the chamber and a gas conduit connected thereto. The gas injection port is connected to a standard gas storage tank outside the chamber via a quick-connect coupling, allowing operators to directly inject the required gas into the chamber without opening it. The gas detection sensor 8 collects gas concentration parameters inside the chamber in real time. Initially, the gas concentration inside the chamber 3 is at a normal level, and the gas detection sensor 8 is in normal standby mode.

[0043] When simulating a combustible gas leak alarm scenario, the operator connects a standard gas storage tank containing a standard concentration of combustible gas to the gas injection interface and slowly injects a measured amount of gas into the tank. As the combustible gas concentration in the tank gradually rises to the alarm threshold, the gas detection sensor 8 triggers the environmental control unit to generate a combustible gas alarm message. When simulating a toxic gas accumulation scenario, simply replace the tank with a standard gas storage tank containing the corresponding composition and repeat the above operation. After the demonstration is complete, the operator can vent any remaining gas in the tank through the pre-reserved vent on the tank, restoring the device to its initial state. Simulations of different gas alarm scenarios can then be repeated.

[0044] Furthermore, the box is equipped with a heating element (not shown in the figure), and the temperature of the heating element is adjusted to simulate thermal hazards and early signs of fire.

[0045] In one specific embodiment, the heating element is a resistance heating wire or ceramic heating element installed inside the enclosure. Its power supply circuit is connected to a temperature adjustment knob on the external control panel of the enclosure via an adjustable load power supply. The operator can control the input power of the heating element by adjusting the knob, thereby precisely adjusting the surface temperature of the heating element. The thermal imaging sensor 7 is installed inside the enclosure at a position that cooperates with the heating element. It is used to collect the temperature distribution and thermal radiation parameters of the heating element in real time. The collected thermal imaging data is transmitted to the environmental control unit in real time and presented intuitively as a thermal imaging image on the display interface.

[0046] When simulating a scenario where localized overheating of equipment is a concern, the operator adjusts the temperature control knob to a low to medium setting. The temperature of the heating element slowly rises to the preset overheat alarm threshold. Upon detecting abnormal thermal radiation, the thermal imaging sensor 7 triggers the environmental control unit to generate an overheat warning, simulating a thermal hazard caused by poor contact or overload in the underground electrical distribution room. When simulating a fire precursor alarm scenario, the operator further increases the input power of the heating element, raising its surface temperature to a higher level. The abnormal temperature signal collected by the thermal imaging sensor 7 then triggers the environmental control unit to generate a fire precursor alarm, fully replicating the complete monitoring and response process of a thermal fault in the underground electrical distribution room, from hazard warning to alarm escalation.

[0047] Furthermore, the access control sensor includes a status detection element, which is placed at the movable door panel of the enclosure. The opening and closing of the movable door panel simulates an illegal intrusion alarm scenario.

[0048] In one specific embodiment, the status detection element is a reed switch, consisting of a magnetic trigger and an inductive switch. The magnetic trigger is fixedly installed on the edge of the movable door panel of the enclosure, and the inductive switch is correspondingly installed on the door frame of the enclosure. The two remain aligned and in contact when the door panel is closed. Initially, the movable door panel is in the closed position, the reed switch is in the closed state, the access control sensor outputs a normal signal to the environmental control unit, and the display interface shows that the access control status is normal.

[0049] When simulating an unauthorized intrusion alarm scenario, the operator opens the movable door panel of the enclosure. The magnetic trigger moves with the door panel, moving out of the sensing range of the induction switch. The reed switch then disconnects and outputs an abnormality detection signal to the environmental control unit. Upon detecting the abnormal access control status, the environmental control unit immediately generates an unauthorized intrusion alarm message and displays it on the interface. In another embodiment, the status detection element can also be a proximity switch or a tilt sensor instead of a reed switch. The proximity switch determines the opening / closing status by detecting changes in the distance between the movable door panel and the door frame, while the tilt sensor identifies the opening action by detecting changes in the angle of the movable door panel. All three implementation methods can effectively simulate unauthorized intrusion alarm scenarios.

[0050] Furthermore, the surface of the enclosure is provided with multiple status indicator lights, each of which corresponds to one of the multiple environmental sensors and is used to indicate the real-time alarm status of the corresponding environmental sensor.

[0051] In one possible embodiment, the surface of the enclosure is equipped with six status indicator lights, each corresponding to a temperature and humidity sensor 5, a water immersion sensor 6, a wind speed sensor 9, a gas detection sensor 8, a thermal imaging sensor 7, and an access control sensor. Each status indicator light is labeled with the name of the corresponding sensor, allowing operators to quickly identify the monitored object. Each status indicator light is connected to an environmental control unit via a signal line, which drives the display of its status based on the real-time detection signals from the corresponding sensor. Under normal operating conditions, each status indicator light remains solid green. When the environmental parameters collected by the corresponding sensor exceed a preset alarm threshold, the environmental control unit drives the corresponding status indicator light to switch to a flashing red state, visually indicating that the sensor is currently in an alarm state.

[0052] When multiple abnormal environmental scenarios and alarm linkages need to be demonstrated simultaneously, multiple status indicator lights can be switched to a red flashing state at the same time. Operators and observers can intuitively judge the type and number of alarms triggered at present through the status indicator lights on the surface of the enclosure without having to look at the display interface, which improves the intuitiveness and operability of the demonstration process.

[0053] Furthermore, the environmental control unit communicates with the plurality of environmental sensors through at least one of a digital input / output interface, an RS232 / RS485 interface, and a wired network interface.

[0054] Furthermore, the environmental control unit also supports remote transmission of environmental data and alarm information to the PLC or remote station platform via wired or wireless networks.

[0055] In one specific embodiment, the environmental control unit is equipped with multiple communication interfaces, including a digital input / output interface, an RS232 / RS485 interface, and a wired network interface 1. Each interface corresponds to the signal transmission requirements of different types of sensors. Specifically, sensors that output digital signals, such as access control sensors and water immersion sensors 6, are connected to the environmental control unit via the digital input / output interface. Sensors that output analog or digital signals, such as temperature and humidity sensors 5, wind speed sensors 9, and gas detection sensors 8, interact with the environmental control unit via serial communication through the RS232 / RS485 interface. Due to its large data volume, the thermal imaging sensor 7 is connected to the environmental control unit via Ethernet communication through the wired network interface 1. This configuration of multiple communication interfaces enables the device to be compatible with sensors of different communication protocols and signal types, providing excellent scalability and compatibility.

[0056] In another specific embodiment, the environmental control unit is also equipped with a wired network interface 1 and a wireless communication module, supporting the real-time uploading of environmental data and alarm information collected by various sensors inside the enclosure to a remote PLC control system or a remote station monitoring platform via wired Ethernet or wireless networks such as Wi-Fi and 4G. In technical training or solution demonstration scenarios, demonstrators can simultaneously observe the data acquisition and alarm response process of the environmental control unit through the display interface of the remote station platform, achieving synchronized demonstration of local operation and remote monitoring, fully replicating the remote data transmission and centralized monitoring functions of the underground power distribution room environmental monitoring system in actual engineering applications.

[0057] The above examples illustrate the present invention only to aid in understanding it and are not intended to limit the scope of the invention. Those skilled in the art can make various simple deductions, modifications, or substitutions based on the principles of this invention.

Claims

1. An environmental monitoring simulation device for underground power distribution rooms, characterized in that, include: Box; Multiple environmental sensors are integrated inside the enclosure to collect environmental parameters in various dimensions within the enclosure and output corresponding detection signals. A fault scenario simulation component is placed inside the enclosure and is used to simulate various abnormal environmental scenarios within the enclosure. The environmental control unit receives the detection signal, identifies the current abnormal environmental scenario, displays the abnormal data in the current abnormal environmental scenario, and generates corresponding alarm information.

2. The environmental monitoring simulation device for underground power distribution rooms as described in claim 1, characterized in that, The plurality of environmental sensors include at least two of the following: temperature and humidity sensors, water immersion sensors, wind speed sensors, gas detection sensors, thermal imaging sensors, and access control sensors.

3. The environmental monitoring simulation device for underground power distribution rooms as described in claim 2, characterized in that, The sensing end of the water immersion sensor extends into a pre-set liquid containment device inside the box, and liquid is injected into the liquid containment device to simulate a water accumulation alarm scenario.

4. The environmental monitoring simulation device for underground power distribution rooms as described in claim 2, characterized in that, The box is equipped with an adjustable speed airflow generator, and the output intensity of the adjustable speed airflow generator is adjusted to simulate wind speed changes under different ventilation conditions.

5. The environmental monitoring simulation device for underground power distribution rooms as described in claim 2, characterized in that, The chamber is equipped with a gas injection device, which simulates combustible gas or toxic gas alarm scenarios by injecting different types of gas into the chamber.

6. The environmental monitoring simulation device for underground power distribution rooms as described in claim 2, characterized in that, The box is equipped with a heating element, and the temperature of the heating element is adjusted to simulate thermal hazards and early signs of fire.

7. The environmental monitoring simulation device for underground power distribution rooms as described in claim 2, characterized in that, The access control sensor includes a status detection element, which is placed at the movable door of the enclosure. The opening and closing of the movable door simulates an illegal intrusion alarm scenario.

8. The environmental monitoring simulation device for underground power distribution rooms as described in claim 1, characterized in that, The surface of the enclosure is provided with multiple status indicator lights, each of which corresponds to one of the multiple environmental sensors and is used to indicate the real-time alarm status of the corresponding environmental sensor.

9. The environmental monitoring simulation device for underground power distribution rooms as described in claim 1, characterized in that, The environmental control unit communicates with the plurality of environmental sensors through at least one of a digital input / output interface, an RS232 / RS485 interface, and a wired network interface.

10. The environmental monitoring simulation device for underground power distribution rooms as described in claim 1, characterized in that, The environmental control unit also supports remote transmission of environmental data and alarm information to the PLC or remote station platform via wired or wireless networks.

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