Platform door heating system adapting to severe cold working condition and heating method
By setting up the fourth heating plate and temperature sensor in the platform door heating system, real-time adjustment of heating power is achieved, and the problem of degradation of electrical performance of components in severe cold environments is solved, the stable operation of the system and passenger safety is ensured, and the low temperature is reduced Cost of use of environmental components.
Patent Information
- Application Number
- CN202411523470.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-29
- Publication Date
- 2025-01-10
AI Technical Summary
The existing heating control system cannot effectively preheat components in severe cold conditions, resulting in a degradation of electrical performance. The traditional heating system cannot adjust the heating power and cannot meet the temperature control needs in severe cold environments.
A platform door heating system adapted to severe cold conditions was designed. By setting a fourth heating plate and a temperature sensor in the heating control module, the heating power of each heating plate is individually adjusted, and real-time monitoring and adjustment is carried out through the temperature sensor. , the heating power is proportional to the temperature difference, forming a closed-loop control to ensure that the system is preheated first in a low-temperature environment to avoid damage to components.
It realizes stable heating of the platform door system in severe cold environments, avoids the decline in the electrical performance of components, reduces the cost of using expensive and low-temperature environment components, and ensures the safe and stable operation of the electromechanical system and the safety of passengers.
Smart Images
Figure CN119300181A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field of heating, and in particular relates to a platform door heating system and a heating method suitable for severe cold working conditions. Background Art
[0002] In high-latitude areas, severe winter weather will cause changes in the electrical capabilities, mechanical properties, and component characteristic parameters of conventional electromechanical system components, making it difficult for electromechanical control systems to operate normally, posing a huge threat to the safe and stable operation of platform doors and the personal safety of passengers. At the same time, components designed for severe cold environments are expensive and have fewer types and models, making it difficult to meet cost engineering and special functional requirements.
[0003] In response to the pain points and difficulties of the platform door system under the current severe cold conditions, there are already technologies for heating the platform doors, such as the patent document with publication (announcement) number CN214851855U. Summary of the invention
[0004] The technical problems to be solved by the present invention are:
[0005] ① Our company's research found that the existing heating control system does not solve the problem of the impact of the low temperature environment on components when the system is initially powered on under severe cold conditions. That is, the control system is powered on and runs in a low temperature environment before performing overall heating work. In this case, the electrical components will be in a low temperature environment for a long time, affecting their electrical performance and causing deviations in the real-time temperature detection and heater control of the heating control system.
[0006] ②Our company's research found that for some electrical equipment / components, there is a corresponding relationship between the temperature difference (that is, the difference between the actual temperature of the working environment and the comfortable temperature of the equipment) and the heating rate (that is, the amount of temperature rise per unit time). The heating rate is proportional to the heating power. That is to say, if the heating power of the heating plate is too high, the temperature near the heating plate will rise too quickly, which will cause damage to the electrical components. If the heating power of the heating plate is too low, the heating effect will be affected and the environment will not be heated, causing the electrical components to be in a low temperature environment for a long time, affecting their electrical performance.
[0007] In the above-mentioned documents, ① there is no pre-heating system, and the heating module cannot be heated before being powered on. In a low temperature environment, the electrical performance of the electrical components of the heating module will be reduced, causing the heating module to fail to work normally or the detection data deviation / precision to decrease; ② The component that controls the heating is the relay 104, which can only make a simple instruction of "whether" to heat, and cannot adjust the heating power, and cannot meet actual needs.
[0008] The specific plan is as follows:
[0009] A platform door heating system suitable for severe cold working conditions includes a front end and a rear end, the front ends are respectively arranged at multiple platform doors, and the rear end is arranged in an equipment room, a heating control module is arranged at the platform door, the heating control module is connected to the main power supply line of the heating plate, and the heating power of each heating plate can be adjusted individually; a heating device power cabinet is arranged in the equipment room, the power cabinet is connected to the fourth heating plate of the heating control module through a preheating line, the power cabinet is connected to the heating control module through a power supply line, and the power supply line supplies power to the components in the heating control module; the heating plates are distributed at the platform doors; a fourth heating plate is arranged in the heating control module to heat the internal components; temperature sensors are arranged in the heating areas; the temperature sensors transmit the temperature back to the heating control module through the data line.
[0010] A power-on delay relay is provided on the power supply line.
[0011] The temperature sensor is connected to the temperature online monitoring system through a data line. The temperature online monitoring system is located in the central control panel of the equipment room and is responsible for visualizing the temperature values and alarm status of each sliding door unit uploaded by the heating control module.
[0012] The heating plates in the anti-collision clip strip and the door sill area are long and bendable.
[0013] A heating method, using the platform door heating system adapted to severe cold working conditions, comprises the following steps:
[0014] S10, when the severe cold working conditions meet the system startup conditions, the central control panel issues a command, the system starts the preheating circuit to connect, and the fourth heating plate in the heating control module box heats the internal components; after the extension time t, the power supply circuit is connected, and the heating control module starts to power on;
[0015] S20, the temperature sensors collect temperature parameters of the respective areas and transmit the data to the heating control module once every time interval;
[0016] S30, the heating control module adjusts the heating power of the heating plate in real time according to the temperature parameters; in this step, when the temperature detection value of any sensor in a certain area is lower than the lower limit temperature, the heating control module controls the heating plate in this area to start working, and when the temperature detection values of the sensors in this area are all higher than the upper limit temperature, the heating control module controls the heating plate in this area to stop working.
[0017] In step S30, the CPU module of the heating control module collects the temperature T of the corresponding area in real time through the temperature sensor. a , and the set temperature T s The difference between d (T d =T s -Ta ), through T d The value is calculated in real time and the output voltage U of the heating control module to the corresponding heating plate is modulated O , use the following function to adjust the heating power P of the heating plate O , forming a closed-loop control.
[0018]
[0019] Where U I and P I are the initial voltage and initial power of the heater, and K1~K3 are constants.
[0020] The present application designs a power-off restart preheating mechanism, which first performs environmental heating before the control system is powered on. When the ambient temperature reaches the set temperature lower limit (adjustable), the system starts to power on; this avoids damage to components or changes in electrical performance caused by working in a low-temperature environment, thereby ensuring the stable operation of the electromechanical system. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a schematic diagram of the present invention.
[0022] Figure 2 It is a schematic diagram of the corresponding relationship between voltage and temperature difference.
[0023] Figure 3 Schematic diagram of the corresponding relationship between heating power and temperature difference. DETAILED DESCRIPTION
[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention.
[0025] like Figure 1 A platform door heating system adapted to severe cold working conditions includes a front end and a rear end, wherein the front ends are respectively arranged at a plurality of platform doors 20 , and the rear end is arranged in an equipment room 10 .
[0026] It should be noted that the equipment room 10 is generally equipped with heating equipment such as heaters, while the platform door 20 is generally outdoors and will be affected by low temperature weather, which also makes it a heating object of this patent.
[0027] A heating control module 24 is provided at the platform door 20 , and the heating control module 24 is electrically connected to the main power supply circuit of the heating plate, and can individually adjust the heating power of each heating plate.
[0028] A heating device power cabinet 11 is provided in the equipment room 10. The power cabinet 11 is connected to the fourth heating plate H6 of the heating control module 24 through a preheating line 42. The power cabinet 11 is connected to the heating control module 24 through a power supply line 41. The power supply line 41 supplies power to the components in the heating control module 24.
[0029] The heating plates are distributed at the platform doors 20, such as:
[0030] Since the top box 21 of the platform door 20 has a large space, it is necessary to set high-power first heating plates H1-H3 to achieve an overall heating effect;
[0031] The door body 22 of the platform door 20 may become brittle when exposed to cold, which may cause dangers such as hardening of the anti-collision clip strip and the like. Therefore, the second heating plate H4 of the anti-collision clip strip 22 and the third heating plate H5 of the threshold area 23 are provided with a long, bendable, self-limiting temperature heating belt in a narrow space to heat the door frame, rubber strip, threshold and other parts;
[0032] The heating control module 24 is an important control system, and a low-power fourth heating plate H6 needs to be arranged in the box to heat the internal components.
[0033] The heating zones are equipped with temperature sensors, such as:
[0034] The top box 21 of the platform door 20 is provided with six first temperature sensors T1-T6, the anti-collision clip 22 is provided with two second temperature sensors T7-T8, the threshold area is provided with two third temperature sensors T9 and T10, and the box of the heating control module 24 is provided with a fourth temperature sensor T11.
[0035] The temperature sensor heats the control module 24 via a data line.
[0036] The temperature sensor is connected to the temperature online monitoring system 13 through the data line 43. The temperature online monitoring system 13 is arranged in the central control panel 12 of the equipment room 10 and is responsible for visualizing the temperature values and alarm status of each sliding door unit uploaded by the heating control module. The staff can view the temperature of each area and each device of the sliding door of the entire station in real time online through the temperature online monitoring system.
[0037] When the heating system is started, the heating control module 24 may also be in a low temperature state. At this time, the sensitivity of its electrical components is also affected. At this time, if it is allowed to command the heating power of the heating plate, errors may occur.
[0038] To this end, it is further improved:
[0039] The power supply line 41 is provided with a power-on delay relay.
[0040] The sensor can detect temperatures ranging from -55°C to 125°C with an accuracy of ≤0.5°C. It can communicate via a single port pin and convert the detected temperature data into digital quantities and transmit them to the microcontroller in the heating control module for temperature control processing.
[0041] It should be noted that the main power supply circuits of all the heating plates are prior art and are not drawn in the drawings of this application.
[0042] Its working principle is:
[0043] See also Figure 1-Figure 3 , including the following steps:
[0044] S10, when the severe cold working conditions meet the system startup conditions, the central control panel 12 issues a command, the system starts the preheating circuit 42 to connect, and the fourth heating plate H6 in the heating control module 24 box heats the internal components; after the extension time t, the power supply circuit 41 is connected, and the heating control module starts to power on;
[0045] In this step, the extension time t can be preset.
[0046] S20, the temperature sensors collect temperature parameters of their respective areas and transmit the data to the heating control module 24 once every time interval.
[0047] In this step, the time interval can be preset.
[0048] S30, the heating control module 24 adjusts the heating power of the heating plate in real time according to the temperature parameters.
[0049] In this step, the CPU module of the heating control module collects the temperature T of the corresponding area in real time through the temperature sensor. a , and the set temperature T s The difference between d (T d =T s -T a ), through T d The value is calculated in real time and the output voltage U of the heating control module to the corresponding heating plate is modulated O , use the following function to adjust the heating power P of the heating plate O , forming a closed-loop control.
[0050]
[0051] Where U I and P I are the initial voltage and initial power of the heater, and K1~K3 are constants.
[0052] The purpose of adjustment is to prevent the heater from reaching the maximum power too quickly and causing damage to the device. It also controls the heating power of the device by controlling the voltage supplied to the heater. When the temperature difference is not large, it does not need to run at full power.
[0053] In this step, when the temperature detection value of any sensor in a certain area is lower than the lower limit temperature, the heating control module controls the heating plate in this area to start working; when the temperature detection values of the sensors in this area are all higher than the upper limit temperature, the heating control module controls the heating plate in this area to stop working.
[0054] In this step, the comfortable temperature, upper limit temperature, and lower limit temperature of the equipment can be preset.
[0055] Features of this application:
[0056] S1. This application designs a heating device that is adapted to the mechanical structure and rated power of various areas such as the platform door top box, door body and door threshold. The heating can be automatically turned on / off according to the set ambient temperature, avoiding the impact of low temperature environment on the electrical performance of components, and at the same time reducing the additional project costs brought about by the selection of components for low temperature environments.
[0057] S2. This application has achieved breakthroughs in multi-sensor networking and communication technology, realizing temperature monitoring and real-time uploading in areas such as the platform door top box, door body and door threshold; by developing an embedded heating control module, a temperature linkage control system for sensors and heating devices in each area is established, which can automatically control heating by area and equipment.
[0058] S3. This application has achieved a breakthrough in temperature-power closed-loop control technology, and can adaptively adjust the power of the heating device in the area according to the difference between the temperature in the area and the set temperature, so as to maintain the regional temperature in a relatively stable area, reduce the impact of the temperature difference between day and night and the sudden drop in temperature during cold waves on the electromechanical system and components; at the same time, set a power upper limit threshold to avoid damage to components due to excessive power of the heating device.
[0059] S4. This application designs a power-off restart preheating mechanism, which first performs environmental heating before the control system is powered on. When the ambient temperature reaches the set temperature lower limit (adjustable), the system starts to power on; this prevents components from being damaged or their electrical performance from changing when working in a low-temperature environment, thereby ensuring the stable operation of the electromechanical system.
[0060] S5. This application realizes the automation, informatization and visualization of the entire process of platform door system temperature monitoring, control, data uploading, etc. under severe cold conditions, ensuring the safe and stable operation of the platform door system and the personal safety of passengers.
[0061] S6. By establishing a heating system, the influence of low temperature environment on the electrical performance of components is avoided, and the additional cost of selecting components for low temperature environment is reduced; temperature monitoring and real-time uploading of each area are realized to provide convenience for staff; a temperature joint control system of temperature sensors and heating devices in each area is established, which can automatically control heating by area and equipment to avoid local overheating and overcooling; the power of the heating device in the area can be adaptively adjusted according to the difference between the temperature in the area and the set temperature, so as to maintain the temperature of the area in a relatively stable area and reduce the influence of sudden temperature changes on the electromechanical system and components.
[0062] S7. This system realizes the automation, informatization and visualization of the whole process of platform door system temperature monitoring, control, data uploading, etc. under severe cold working conditions. It can also be extended to other electromechanical fields and has very good engineering application prospects.
[0063] For other details, please refer to the prior art and will not be described in detail.
[0064] The technical means disclosed in the scheme of the present invention are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical schemes composed of any combination of the above-mentioned technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications are also regarded as the protection scope of the present invention.
Claims
1. A platform door heating system adapted to severe cold working conditions, comprising a front end and a rear end, wherein the front ends are respectively arranged at a plurality of platform doors, and the rear end is arranged in an equipment room, and is characterized in that: A heating control module is provided at the platform door, which is connected to the main power supply line of the heating plate and can adjust the heating power of each heating plate individually; A heating device power cabinet is provided in the equipment room. The power cabinet is connected to the heating plate of the heating control module through a preheating line. The power cabinet is connected to the heating control module through a power supply line. The power supply line supplies power to the components in the heating control module. The heating plates are distributed at the platform doors; A heating plate is provided in the heating control module to heat the internal components; Each heating zone is equipped with a temperature sensor; The temperature sensor transmits the temperature back to the heating control module via the data line.
2. The platform door heating system adapted to severe cold conditions as claimed in claim 1, characterized in that: A power-on delay relay is provided on the power supply line.
3. The platform door heating system adapted to severe cold conditions as claimed in claim 2, characterized in that: The temperature sensor is connected to the temperature online monitoring system through a data line. The temperature online monitoring system is located in the central control panel of the equipment room and is responsible for visualizing the temperature values and alarm status of each sliding door unit uploaded by the heating control module.
4. The platform door heating system adapted to severe cold conditions as claimed in claim 3, characterized in that: The heating plates in the anti-collision clip strip and the door sill area are long and bendable.
5. A heating method, characterized in that: The platform door heating system adapted to severe cold conditions as claimed in claim 4 comprises the following steps: S10, when the severe cold working conditions meet the system startup conditions, the central control panel issues a command, the system starts the preheating circuit to connect, and the fourth heating plate in the heating control module box heats the internal components; after the extension time t, the power supply circuit is connected, and the heating control module starts to power on; S20, the temperature sensors collect temperature parameters of the respective areas and transmit the data to the heating control module once every time interval; S30, the heating control module adjusts the heating power of the heating plate in real time according to the temperature parameters; in this step, when the temperature detection value of any sensor in a certain area is lower than the lower limit temperature, the heating control module controls the heating plate in this area to start working, and when the temperature detection values of the sensors in this area are all higher than the upper limit temperature, the heating control module controls the heating plate in this area to stop working.
6. The heating method according to claim 5, characterized in that: In step S30, the CPU module of the heating control module collects the temperature T of the corresponding area in real time through the temperature sensor. a , and the set temperature T s The difference between d (T d =T s -T a ), through T d The value is calculated in real time and the output voltage U of the heating control module to the corresponding heating plate is modulated O , use the following function to adjust the heating power P of the heating plate O , forming a closed-loop control; Where U I and P I are the initial voltage and initial power of the heater, and K1~K3 are constants.