A locomotive air conditioning monitoring system
By introducing multi-sensor and RS485 signal acquisition technology into the locomotive air conditioning system, closed-loop management of locomotive air conditioning status monitoring and fault early warning has been realized, solving the problem of fault prediction for railway locomotive air conditioning, reducing maintenance costs and improving operation and maintenance efficiency.
Patent Information
- Application Number
- CN202521717680.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-13
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-08-13
AI Technical Summary
Railway locomotive air conditioning systems suffer from frequent and unpredictable malfunctions, lack of data support for maintenance, and absence of full lifecycle management. Traditional operation and maintenance methods cannot monitor the air conditioning operating status in real time, resulting in delayed fault response and high maintenance costs.
A locomotive air conditioning monitoring system was designed. It collects temperature and current data through multi-sensor fusion and combines it with a full life cycle digital archive to achieve status monitoring, fault early warning and precise maintenance. It adopts RS485 signal acquisition and transmission to achieve low-cost data acquisition and is suitable for the intelligent transformation of old locomotives.
It realizes closed-loop management of locomotive air conditioning status monitoring and fault early warning, improves fault prediction accuracy by more than 60%, reduces maintenance costs by 30%, optimizes operation and maintenance efficiency, and is applicable to railway operation and maintenance scenarios.
Smart Images
Figure CN224676103U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of locomotive air conditioning operation and maintenance technology, and in particular to a locomotive air conditioning monitoring system. Background Technology
[0002] Currently, railway locomotive air conditioning systems commonly suffer from frequent and unpredictable malfunctions, a lack of data support for maintenance, and a deficiency in full lifecycle management. Traditional maintenance methods rely on manual inspections, which cannot monitor the air conditioning system's operating status in real time, leading to delayed fault response. Furthermore, the lack of systematic data analysis makes it difficult to quantify the correlation between maintenance effectiveness and equipment lifespan, resulting in excessively high maintenance costs or over-repair. In addition, older locomotive air conditioning systems lack manufacturer data interfaces, making data collection difficult and further exacerbating the maintenance challenges.
[0003] In existing technologies, some air conditioning monitoring systems only collect single parameters, failing to form a closed-loop management system for the entire lifecycle, and lack low-cost adaptation solutions for locomotive scenarios. Therefore, there is an urgent need for an operation and maintenance system that can cover the entire lifecycle of air conditioning and achieve data collection and intelligent analysis at low cost. Summary of the Invention
[0004] In view of the above problems, this utility model provides a locomotive air conditioning monitoring system to solve the problems mentioned in the background art, such as difficulty in predicting locomotive air conditioning faults, low maintenance efficiency, and data gaps throughout the entire life cycle.
[0005] This utility model provides a locomotive air conditioning monitoring system. The system includes an electrical control cabinet, with an indoor heat exchanger and an outdoor heat exchanger respectively installed on both sides. The indoor heat exchanger has an indoor air outlet and an indoor air inlet. A first temperature sensor and a second temperature sensor are connected to the indoor air outlet and the indoor air inlet, respectively. An outdoor evaporator fan and a return valve are also installed between the outdoor heat exchanger and the electrical control cabinet. The return valve is connected in parallel to a compressor. A third temperature sensor is connected to the outdoor evaporator fan.
[0006] A condenser is connected to the indoor air outlet; the condenser is connected to a first current sensor; the compressor is connected to a second current sensor; and the outdoor evaporator fan is connected to a third current sensor.
[0007] The first temperature sensor (41), the second temperature sensor (42), and the third temperature sensor (43), as well as the first current sensor (61), the second current sensor (62), and the third current sensor (63), are connected to the signal acquisition unit (8).
[0008] The first, second, and third temperature sensors are model number DL15-M485, and there are 3 of them.
[0009] The first current sensor, the second current sensor, and the third current sensor are model FK-DJI-10A, and there are 3 of them.
[0010] The RS485 signal acquisition device is model DR154.
[0011] Compared with the prior art, the technical effects achieved by this utility model are:
[0012] By fusion of temperature and current data from multiple sensors and combining them with a full lifecycle digital archive, a closed-loop management system for locomotive air conditioning—"condition monitoring - fault warning - precise maintenance - life assessment"—has been achieved, breaking through the fragmented limitations of traditional operation and maintenance.
[0013] A low-cost data acquisition solution was designed for aging equipment, which acquires data through external sensors and RS485 signal acquisition and transmission, thus solving the problem of intelligent transformation of aging locomotives.
[0014] Intelligent early warning reduces the failure rate; data-driven quantification of the relationship between maintenance effectiveness and equipment lifespan optimizes maintenance cycles and reduces operation and maintenance costs; multi-platform terminal compatibility enhances ease of operation and is suitable for the actual needs of railway operation and maintenance scenarios. Attached Figure Description
[0015] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0016] Figure 1 This is a schematic diagram of the structure of this application.
[0017] Explanation of reference numerals in the attached figures:
[0018] 1. Electrical control cabinet; 2. Indoor heat exchanger; 21. Indoor air outlet; 22. Outdoor air inlet; 3. Outdoor heat exchanger; 31. Outdoor evaporator fan; 32. Recirculation valve; 33. Compressor; 41. First temperature sensor; 42. Second temperature sensor; 43. Third temperature sensor; 5. Condenser; 61. First temperature sensor; 62. Second temperature sensor; 63. Third temperature sensor; 8. RS485 signal acquisition device. Implementation
[0019] To facilitate understanding of the technical solution of this utility model, the technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings.
[0020] like Figure 1 As shown, this utility model provides a locomotive air conditioning monitoring system. This monitoring system includes: an electrical control cabinet 1, with an indoor heat exchanger 2 and an outdoor heat exchanger 3 respectively installed on both sides of the control cabinet 1. The indoor heat exchanger 2 has an indoor air outlet 21 and an indoor air inlet 22. A first temperature sensor 41 and a second temperature sensor 42 are respectively connected to the indoor air outlet 21 and the indoor air inlet 22. An outdoor evaporator fan 31 and a return valve 32 are also installed between the outdoor heat exchanger 3 and the control cabinet 1. The return valve 32 is also connected in parallel to a compressor 33. A third temperature sensor 43 is connected to the outdoor evaporator fan 31.
[0021] A condenser 5 is connected to the indoor air outlet 21. The condenser 5 is connected to the first current sensor 61. The compressor 33 is connected to the second current sensor 62. The outdoor evaporator fan 31 is connected to the third current sensor 63.
[0022] The first temperature sensor 41, the second temperature sensor 42, and the third temperature sensor 43, as well as the first current sensor 61, the second current sensor 62, and the third current sensor 63, are connected to the RS485 signal acquisition unit 8.
[0023] The first temperature sensor 41, the second temperature sensor 42, and the third temperature sensor 43 are all model DL15-M485.
[0024] The first current sensor 61, the second current sensor 62, and the third current sensor 63 are model FK-DJI-10A.
[0025] The RS485 signal acquisition unit 8 is model DR154.
[0026] The RS485 signal acquisition device 8 collects data from the first temperature sensor 41, the second temperature sensor 42, the third temperature sensor 43, the first current sensor 61, the second current sensor 62, and the third current sensor 63. The collected data is converted into digital signals and then uploaded to the cloud of the PC and the mini-program via the 4G module to achieve real-time data monitoring.
[0027] The first temperature sensor 41 and the second temperature sensor 42 are respectively installed at the indoor side air outlet 21 and the indoor side air inlet 22. The temperature of the two air outlets is transmitted to the cloud through the RS485 signal acquisition device 8. This function is to compare the temperature difference between the indoor side air outlet 21 and the indoor side air inlet 22 to monitor the indoor temperature and the air conditioning cooling effect, and ensure the comfort of the vehicle.
[0028] The third temperature sensor 43 is installed at the outdoor evaporator fan 31, which can transmit the temperature to the cloud. Combined with the temperature at the air outlet, it can monitor whether the condenser 5 is in a state of ice blockage and perform timely maintenance on the air conditioner.
[0029] The current data of the condenser 5, compressor 33 and outdoor evaporator fan 31 are monitored by the first current sensor 61, the second current sensor 62 and the third current sensor 63 respectively. When the corresponding data shows a significant drop, the problem of dirt blockage in the condenser 5, ice blockage in the outdoor evaporator fan 31 or unstable current in the compressor is detected.
[0030] The cloud management platform's data analysis module is set to the following normal operating parameter ranges: compressor 33 current 4-6A, outdoor evaporator fan 31 current 1-1.5A, condenser 4 current 0.3-0.7A, and temperature difference between indoor air outlet 21 and indoor air inlet 22 ≥8℃. When abnormal data is detected, such as compressor current rising to 7A or temperature difference dropping to 4℃, the early warning module sends an early warning message to the management personnel through the terminal.
[0031] The maintenance management module generates maintenance suggestions based on operating data. When the current of the outdoor evaporator fan 31 continues to rise by 5%, it automatically prompts to clean the filter. The full life cycle archive module records the performance changes after each maintenance and quantifies the maintenance effect by comparing the temperature difference and current data before and after maintenance.
[0032] The PC terminal of the terminal display layer is used for backend management, while the mini-program terminal is used for front-line maintenance personnel to receive work orders, realizing a digital closed loop in the maintenance process.
[0033] This embodiment improves the accuracy of locomotive air conditioning fault prediction by more than 60% and reduces maintenance costs by 30% through systematic monitoring and management, significantly improving operation and maintenance efficiency and economy.
[0034] By fusion of temperature and current data from multiple sensors and combining them with a full lifecycle digital archive, a closed-loop management system for locomotive air conditioning—"condition monitoring - fault warning - precise maintenance - life assessment"—has been achieved, breaking through the fragmented limitations of traditional operation and maintenance.
[0035] A low-cost data acquisition solution was designed for aging equipment, which acquires data through external sensors and RS485 signal acquisition and transmission, thus solving the problem of intelligent transformation of aging locomotives.
[0036] Intelligent early warning reduces the failure rate; data-driven quantification of the relationship between maintenance effectiveness and equipment lifespan optimizes maintenance cycles and reduces operation and maintenance costs; multi-platform terminal compatibility enhances ease of operation and is suitable for the actual needs of railway operation and maintenance scenarios.
Claims
1. A locomotive air conditioning monitoring system, characterized in that: This monitoring system includes: an electrical control cabinet (1), on which an indoor heat exchanger (2) and an outdoor heat exchanger (3) are respectively installed on both sides. An indoor air outlet (21) and an indoor air inlet (22) are installed at the indoor heat exchanger (2). A first temperature sensor (41) and a second temperature sensor (42) are respectively connected to the indoor air outlet (21) and the indoor air inlet (22). An outdoor evaporator fan (31) and a recirculation valve (32) are also installed between the outdoor heat exchanger (3) and the electrical control cabinet (1). A compressor (33) is also connected in parallel to the recirculation valve (32). A third temperature sensor (43) is connected to the outdoor evaporator fan (31). A condenser (5) is connected to the indoor air outlet (21). The condenser (5) is connected to a first current sensor (61). The compressor (33) is connected to a second current sensor (62). The outdoor evaporator fan (31) is connected to a third current sensor (63). The first temperature sensor (41), the second temperature sensor (42), and the third temperature sensor (43), as well as the first current sensor (61), the second current sensor (62), and the third current sensor (63), are connected to the RS485 signal acquisition unit (8).
2. The locomotive air conditioning monitoring system according to claim 1, characterized in that: The model of the first temperature sensor (41), the second temperature sensor (42) and the third temperature sensor (43) is DL15-M485, and the quantity is 3.
3. The locomotive air conditioning monitoring system according to claim 1, characterized in that: The first current sensor (61), the second current sensor (62) and the third current sensor (63) are model FK-DJI-10A, and there are 3 of them.
4. The locomotive air conditioning monitoring system according to claim 1, characterized in that: The RS485 signal acquisition device (8) is model DR154.