Elevator control system in corrosive environment

Abstract

The application discloses an elevator control system in a corrosive environment, comprising: an environment detection module for detecting environmental parameters in the elevator environment, the environmental parameters including corrosive gas concentration, relative humidity and temperature; a data processing module connected with the environment detection module, for evaluating the environmental corrosion grade according to the environmental parameters; and a protection control module connected with the data processing module, for adjusting the protection strategy according to the environmental corrosion grade. The application realizes real-time monitoring of environmental parameters such as corrosive gas concentration, relative humidity and temperature in the elevator operating environment by introducing the environment detection module, the data processing module and the protection control module; the data processing module can evaluate the environmental corrosion grade according to the parameters, so that the protection control module can dynamically adjust the protection strategy according to the evaluation result.

Description

Technical Field

[0001] This invention relates to the field of elevator control technology, and more specifically to an elevator control system for corrosive environments. Background Technology

[0002] As an indispensable vertical transportation tool in modern high-rise buildings and important locations, the safety and reliability of elevator operation are of paramount importance. However, in certain special environments, such as chemical plants, coastal areas, or metallurgical enterprises, elevator control systems face severe corrosion challenges. The corrosive gases (such as acid and alkali gases, sulfides), high humidity, and salt spray commonly found in these environments can cause serious corrosion damage to the precision electronic components, circuit boards, and metal structures inside the elevator control cabinet.

[0003] Current elevator corrosion prevention technologies primarily focus on protecting mechanical components, such as using stainless steel and applying surface coatings, but pay insufficient attention to the corrosion prevention of control systems. Traditional protective measures are often static, lacking real-time perception and adaptive adjustment capabilities in response to environmental changes. Specifically, existing technologies suffer from the following problems: First, the lack of real-time monitoring of corrosion risks in the elevator operating environment leads to delayed activation of protective measures, failing to effectively prevent the occurrence and spread of corrosion. Second, protection strategies are simplistic, typically employing only simple sealing or coating with anti-corrosion materials, unable to adapt to dynamic changes in environmental corrosion levels, resulting in poor protective effects or wasted resources. Third, existing technologies lack the ability to predict the remaining service life of equipment, usually only addressing issues after equipment failure, leading to prolonged downtime, increased maintenance costs, and potential safety accidents. Finally, existing systems have low levels of intelligence, lacking data analysis and self-learning capabilities, hindering the accumulation of corrosion prevention experience and optimization of protection strategies, thus making long-term, efficient corrosion management difficult. These problems collectively contribute to the predicament of elevator control systems being prone to corrosion, having short lifespans, and poor reliability in corrosive environments, severely impacting the operational safety and service life of elevators. To address the aforementioned issues, existing technologies urgently need improvement. Summary of the Invention

[0004] This invention discloses an elevator control system for corrosive environments, aiming to solve the problems of easy corrosion, short lifespan, and poor reliability of existing elevator anti-corrosion technologies in corrosive environments.

[0005] The technical solution of the present invention is as follows: An elevator control system for corrosive environments, comprising: An environmental monitoring module is used to detect environmental parameters in the elevator environment, including the concentration of corrosive gases, relative humidity, and temperature. A data processing module, connected to the environmental monitoring module, is used to assess the environmental corrosion level based on the environmental parameters; and The protection control module, connected to the data processing module, is used to adjust the protection strategy according to the environmental corrosion level.

[0006] Furthermore, it also includes: The early warning management module, connected to the data processing module, is used to predict the remaining service life of the equipment based on the environmental parameters and generate maintenance early warnings.

[0007] Furthermore, the early warning management module uses the Arrhenius correction model to predict the remaining service life of the equipment, where the Arrhenius correction model is: L = L o ×exp[(E a / R)×(1 / T - 1 / T o )]×K(C, H), where L is the predicted lifetime, L o For lifespan under standard conditions, E a Let R be the activation energy, R be the gas constant, and T be the absolute temperature. o The reference temperature is K(C, H), which is the corrosion environment correction factor.

[0008] Furthermore, it also includes: The remote monitoring platform is connected to the data processing module and the early warning management module via a communication network for remote monitoring and data analysis.

[0009] Furthermore, the protection control module includes: An inert gas protection unit is used to fill the elevator control cabinet with inert gas. A temperature and humidity control unit is used to regulate the temperature and humidity inside the elevator control cabinet; and The operating condition degradation unit, connected to the elevator controller, is used to reduce the elevator's operating speed and the number of start-stop cycles.

[0010] Furthermore, the environmental detection module includes: The multi-parameter sensor unit includes a corrosive gas sensor, a humidity sensor, and a temperature sensor; A signal conditioning unit, connected to the multi-parameter sensor unit, is used to amplify and filter the sensor signal; and A data communication unit, connected to the signal conditioning unit, is used to send data to the data processing module.

[0011] Furthermore, the environmental parameters also include pressure; the environmental detection module also includes a pressure sensor for detecting the sealing pressure of the elevator control cabinet.

[0012] Furthermore, the data processing module is used to evaluate the environmental corrosion level using a multi-factor weighted evaluation model. The multi-factor weighted evaluation model is: Corrosion level = w1×f(C) + w2×f(H) + w3×f(T) + w4×f(P), where C is the concentration of corrosive gas, H is the relative humidity, T is the temperature, P is the pressure, f() is the normalization function, and w1, w2, w3, and w4 are weighting coefficients, and w1+w2+w3+w4=1.

[0013] Furthermore, the protection strategy includes: When the environmental corrosion level is the first preset level, an intermittent ventilation strategy is activated. When the environmental corrosion level is the second preset level, a continuous ventilation and temperature control strategy is activated. When the environmental corrosion level is the third preset level, the inert gas protection strategy is activated; When the environmental corrosion level is the fourth preset level, the operating condition degradation strategy is activated.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention introduces an environmental detection module, a data processing module, and a protection control module to achieve real-time monitoring of environmental parameters such as the concentration of corrosive gases, relative humidity, and temperature in the elevator operating environment. The data processing module can assess the environmental corrosion level based on these parameters, thereby enabling the protection control module to dynamically adjust the protection strategy based on the assessment results.

[0015] First, this invention addresses the lack of real-time monitoring of corrosion risks in the elevator operating environment in existing technologies. By using an environmental detection module to monitor the concentration of corrosive gases, relative humidity, and temperature in real time, the system can promptly obtain environmental corrosion information, avoiding the drawbacks of traditional protective measures that are delayed in activation and unable to effectively prevent the occurrence and spread of corrosion.

[0016] Secondly, this invention overcomes the limitations of existing protection strategies, which are often singular and lack adaptive adjustment. The data processing module assesses the environmental corrosion level based on environmental parameters, providing a scientific basis for the protection control module. This allows the module to adjust its protection strategy according to the dynamic changes in the corrosion level, thereby achieving refined and adaptive protection and avoiding problems such as poor protection effectiveness or waste of resources.

[0017] Finally, through real-time monitoring and adaptive protection, this invention significantly improves the corrosion resistance and reliability of elevator control systems in corrosive environments, extends equipment service life, reduces maintenance costs, and effectively prevents potential safety accidents caused by corrosion, thereby solving the dilemma of easy corrosion, short lifespan, and poor reliability of existing elevator control systems. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, 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 some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 The present invention provides an overall architecture diagram of an elevator control system for use in corrosive environments; Figure 2 This is a schematic diagram showing the layout of the environmental detection module described in this invention; Figure 3 This is a flowchart of the corrosion level assessment model described in this invention; Figure 4 This is a flowchart of the protection and control strategy described in this invention; Figure 5 This is a schematic diagram of the remaining service life prediction model for the equipment described in this invention. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0021] To illustrate the technical solution described in this invention, specific embodiments are described below.

[0022] Example This embodiment provides an elevator control system for corrosive environments, designed to provide comprehensive protection for elevators in such environments. See also... Figures 1-5 The system mainly consists of an environmental monitoring module 100, a data processing module 200, and a protection control module 300. The environmental monitoring module 100 is responsible for real-time sensing of key parameters in the elevator's operating environment, including corrosive gas concentration, relative humidity, and temperature. These parameters are core indicators for assessing environmental corrosion risk. The data processing module 200 is closely connected to the environmental monitoring module 100, and its main function is to receive and analyze the environmental parameters collected by the monitoring module 100, and assess the current corrosion level based on these parameters. The protection control module 300 is connected to the data processing module 200, and intelligently adjusts and executes corresponding protection strategies based on the environmental corrosion level assessed by the data processing module 200 to protect the elevator control system from corrosion.

[0023] Specifically, the environmental monitoring module 100 is deployed in key locations such as the elevator machine room, shaft, and car to ensure comprehensive monitoring of the elevator's operating environment. By integrating multiple sensors, the environmental monitoring module 100 can acquire environmental parameters in real time and accurately.

[0024] After receiving environmental parameters, the data processing module 200 performs a series of complex processes. This includes filtering the raw data to eliminate noise, performing data fusion to integrate data from different sensors, and conducting trend analysis to predict changes in environmental parameters. Based on this, the data processing module 200 establishes an environmental corrosion level assessment model. This model uses multiple algorithms to classify environmental conditions into different corrosion levels, such as "normal," "caution," "warning," and "danger." These levels intuitively reflect the degree of corrosion risk posed by the current environment to the elevator control system.

[0025] The protection control module 300 adaptively adjusts the protection strategy based on the corrosion level assessed by the data processing module 200. For example, when the corrosion level is low, light protection measures such as intermittent ventilation can be taken; when the corrosion level increases, more aggressive protection measures such as continuous ventilation, temperature control, or even inert gas protection may need to be activated. This adaptive protection strategy ensures that the elevator control system receives appropriate protection under different corrosion risks, avoiding resource waste caused by over-protection, and also allows for timely upgrades to the protection level when the risk intensifies, effectively reducing the impact of corrosion on the equipment.

[0026] Through the organic combination of the above-mentioned environmental detection module 100, data processing module 200 and protection control module 300, real-time monitoring, intelligent assessment and adaptive protection of the elevator operating environment are realized.

[0027] Furthermore, the system includes an early warning management module 400, which is connected to the data processing module 200. This module predicts the remaining service life of the equipment based on environmental parameters and generates maintenance warnings, thereby enabling preventative maintenance and management of the elevator equipment. Specifically, when the environmental detection module 100 detects environmental parameters such as corrosive gas concentration, relative humidity, and temperature, this data is transmitted to the data processing module 200 for processing. The data processing module 200 assesses the environmental corrosion level while also providing these environmental parameters to the early warning management module 400. Upon receiving the environmental parameters, the early warning management module 400 uses its internal preset models, such as the Arrhenius modified model, to assess the corrosion rate and aging degree of the elevator equipment, thereby predicting the remaining service life of the equipment. Once the prediction results indicate that the remaining service life of the equipment is about to reach a critical point, the early warning management module 400 immediately generates a maintenance warning and notifies relevant personnel through appropriate means (such as audible and visual alarms, information push notifications, etc.). This mechanism enables maintenance work to shift from passive response to proactive prevention, effectively avoiding unexpected equipment downtime and significant losses caused by corrosion.

[0028] The early warning management module 400 uses the Arrhenius modified model to predict the remaining service life of the equipment. The model is: L = L o ×exp[(E a / R)×(1 / T - 1 / T o )]×K(C, H), where L is the predicted lifetime, L o For lifespan under standard conditions, E a Let R be the activation energy, R be the gas constant, and T be the absolute temperature. o The reference temperature is K(C, H), which is the corrosion environment correction factor.

[0029] Furthermore, a remote monitoring platform 500 is included. This platform is connected to the data processing module 200 and the early warning management module 400 via a communication network for remote monitoring and data analysis. By introducing the remote monitoring platform 500, all key information generated by the elevator control system's data processing module 200 and early warning management module 400, including environmental parameters, corrosion levels, equipment remaining service life predictions, and maintenance warnings, can be uploaded in real time to a centralized platform via the communication network, thereby achieving a comprehensive understanding of the elevator's operating environment and equipment health status.

[0030] Specifically, the protection control module 300 includes an inert gas protection unit, a temperature and humidity regulation unit, and a condition degradation unit. The inert gas protection unit is configured to fill the elevator control cabinet with inert gas to isolate corrosive media from contact with sensitive components inside the cabinet, thereby effectively slowing down the corrosion process. The temperature and humidity regulation unit is configured to regulate the temperature and humidity inside the elevator control cabinet, reducing the activity of the corrosion reaction by precisely controlling the microenvironment within the cabinet. The condition degradation unit is connected to the elevator controller and is configured to reduce the elevator's operating speed and the number of start-stop cycles. This is a protection strategy at the operational level, indirectly reducing the impact of corrosion on equipment performance by reducing mechanical wear and electrical stress on elevator components, and buying time for maintenance.

[0031] Specifically, the environmental detection module 100 includes a multi-parameter sensor unit, a signal conditioning unit, and a data communication unit. The multi-parameter sensor unit is configured to include a corrosive gas sensor, a humidity sensor, and a temperature sensor. These sensors are used to directly sense and quantify key corrosive parameters in the elevator environment. The corrosive gas sensor is specifically used to detect the types and concentrations of corrosive gases present in the environment, such as hydrogen sulfide and sulfur dioxide. The humidity sensor is used to measure the relative humidity in the environment. The temperature sensor is used to monitor the ambient temperature. The signal conditioning unit is connected to the multi-parameter sensor unit, and its main function is to amplify and filter the raw signals output by the sensors. The data communication unit is connected to the signal conditioning unit and is used to send the conditioned sensor data to the data processing module. This unit typically includes an analog-to-digital converter (ADC) to convert analog signals into digital signals and transmits the data to the data processing module via a wired or wireless communication interface (such as RS485, Ethernet, Wi-Fi, etc.) to ensure the real-time performance and reliability of the data.

[0032] Furthermore, environmental parameters also include pressure; the environmental detection module also includes a pressure sensor installed inside the elevator control cabinet to detect the sealing pressure of the elevator control cabinet. During data acquisition, the pressure parameter, along with parameters such as corrosive gas concentration, relative humidity, and temperature, is input to the data processing module 200. When assessing the environmental corrosion level, the data processing module 200 comprehensively considers the pressure parameter to more accurately determine the sealing status of the elevator control cabinet and its impact on corrosion risk.

[0033] Specifically, the data processing module 200 uses a multi-factor weighted evaluation model to assess the environmental corrosion level. The model is: Corrosion Level = w1×f(C) + w2×f(H) + w3×f(T) + w4×f(P), where C is the concentration of corrosive gas, H is the relative humidity, T is the temperature, P is the pressure, f(C) is the normalization function, and w1, w2, w3, and w4 are weight coefficients, and w1+w2+w3+w4=1. The weight coefficients are dynamically adjusted according to the environmental type: w1=0.5 for chemical environment, w2=0.4 for marine environment, and w1=0.3 for ordinary urban environment.

[0034] First, the environmental monitoring module 100 collects corrosive gas concentration C, relative humidity H, temperature T, and pressure P in real time. Then, this raw data is input into the data processing module 200. The data processing module 200 first normalizes this data, for example, by using linear normalization to map C, H, T, and P to the range [0, 1], obtaining f(C), f(H), f(T), and f(P). Subsequently, the corrosion level is calculated based on preset weighting coefficients w1, w2, w3, and w4. Finally, based on the calculated corrosion level, the protection control module 300 activates the corresponding protection strategy.

[0035] The protection strategies include: When the environmental corrosion level is the first preset level, an intermittent ventilation strategy is activated. This strategy refers to periodically ventilating the inside of the elevator control cabinet to remove accumulated corrosive gases and moisture. When the environmental corrosion level is the second preset level, a continuous ventilation and temperature control strategy is activated. This strategy refers to continuously ventilating and combining it with temperature regulation when the corrosion risk is moderate, in order to maintain the stability of the internal environment of the control cabinet. When the environmental corrosion level is the third preset level, an inert gas protection strategy is activated. This strategy involves filling the elevator control cabinet with an inert gas, such as nitrogen or argon, to isolate oxygen and corrosive gases, thereby providing a higher level of protection in high-corrosion-risk environments.

[0036] When the environmental corrosion level is the fourth preset level, the working condition degradation strategy is activated. This strategy refers to reducing the elevator's operating speed and the number of start-stop cycles in an extreme corrosive environment, thereby reducing the workload and wear of the elevator control system and extending the service life of the equipment.

[0037] The first, second, third, and fourth preset levels are different levels classified according to the severity of environmental corrosion, increasing sequentially from low to high, representing the evolution of corrosion risk from mild to severe.

[0038] When the data processing module 200 assesses the environmental corrosion level as the first preset level (e.g., slight corrosion risk), the protection control module 300 activates an intermittent ventilation strategy. Specifically, it can be set to ventilate for 5 minutes every 30 minutes, using a fan to exchange the air inside the control cabinet with filtered fresh air from outside, thereby reducing the concentration of corrosive gases and humidity. When the environmental corrosion level rises to the second preset level (e.g., moderate corrosion risk), the protection control module 300 activates a continuous ventilation and temperature control strategy. At this time, the fan will run continuously, and the temperature and humidity regulation unit 302 will be activated to maintain the temperature inside the control cabinet at 20-25°C and the relative humidity at 40-50%. If the environmental corrosion level further deteriorates to the third preset level (e.g., high corrosion risk), the inert gas protection unit 301 will be activated to fill the control cabinet with nitrogen, reducing the oxygen concentration inside the cabinet below a safe level, thereby effectively isolating corrosive substances. When the environmental corrosion level reaches the fourth preset level (e.g., severe corrosion risk), the operating condition degrading unit 303 will communicate with the elevator controller to automatically limit the elevator's maximum operating speed to 70% of the normal speed and reduce the number of daily start-stop cycles to minimize equipment wear and failure risks.

[0039] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An elevator control system for corrosive environments, characterized in that, include: An environmental monitoring module is used to detect environmental parameters in the elevator environment, including the concentration of corrosive gases, relative humidity, and temperature. A data processing module, connected to the environmental monitoring module, is used to assess the environmental corrosion level based on the environmental parameters; and The protection control module, connected to the data processing module, is used to adjust the protection strategy according to the environmental corrosion level.

2. The elevator control system for a corrosive environment according to claim 1, characterized in that, Also includes: The early warning management module, connected to the data processing module, is used to predict the remaining service life of the equipment based on the environmental parameters and generate maintenance early warnings.

3. The elevator control system for a corrosive environment according to claim 2, characterized in that, The early warning management module uses the Arrhenius modified model to predict the remaining service life of the equipment. The Arrhenius modified model is: L = L o ×exp[(E a / R)×(1 / T - 1 / T o )]×K(C, H), where L is the predicted lifetime, L o For lifespan under standard conditions, E a Let R be the activation energy, R be the gas constant, and T be the absolute temperature. o The reference temperature is K(C, H), which is the corrosion environment correction factor.

4. The elevator control system for a corrosive environment according to claim 2, characterized in that, Also includes: The remote monitoring platform is connected to the data processing module and the early warning management module via a communication network for remote monitoring and data analysis.

5. The elevator control system for a corrosive environment according to claim 1, characterized in that, The protection control module includes: An inert gas protection unit is used to fill the elevator control cabinet with inert gas. A temperature and humidity control unit is used to regulate the temperature and humidity inside the elevator control cabinet; and The operating condition degradation unit, connected to the elevator controller, is used to reduce the elevator's operating speed and the number of start-stop cycles.

6. The elevator control system for a corrosive environment according to claim 1, characterized in that, The environmental detection module includes: The multi-parameter sensor unit includes a corrosive gas sensor, a humidity sensor, and a temperature sensor; A signal conditioning unit, connected to the multi-parameter sensor unit, is used to amplify and filter the sensor signal; and A data communication unit, connected to the signal conditioning unit, is used to send data to the data processing module.

7. The elevator control system for a corrosive environment according to claim 1, characterized in that, The environmental parameters also include pressure; the environmental detection module also includes a pressure sensor for detecting the sealing pressure of the elevator control cabinet.

8. The elevator control system for a corrosive environment according to claim 7, characterized in that, The data processing module is used to evaluate the environmental corrosion level using a multi-factor weighted evaluation model. The multi-factor weighted evaluation model is: Corrosion level = w1×f(C) + w2×f(H) + w3×f(T) + w4×f(P), where C is the concentration of corrosive gas, H is the relative humidity, T is the temperature, P is the pressure, f() is the normalization function, and w1, w2, w3, and w4 are weight coefficients, and w1+w2+w3+w4=1.

9. The elevator control system for a corrosive environment according to claim 1, characterized in that, The protection strategy includes: When the environmental corrosion level is the first preset level, an intermittent ventilation strategy is activated. When the environmental corrosion level is the second preset level, a continuous ventilation and temperature control strategy is activated. When the environmental corrosion level is the third preset level, the inert gas protection strategy is activated; When the environmental corrosion level is the fourth preset level, the operating condition degradation strategy is activated.

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