Rail transit vehicle and control method and device for automatically adjusting light intensity change of train

Abstract

The invention discloses a rail transit vehicle and a control method and device for automatically adjusting the light intensity change of a train. The method comprises the steps of obtaining a tunnel position; if the distance between the train and the tunnel is smaller than or equal to the set distance, the photochromic glass voltage control device is disconnected, and when the train passes through the tunnel, the illumination control device in the tunnel is controlled to act; if the distance between the train and the tunnel is larger than the set distance, whether the light intensity exceeds the standard or not is judged, and if yes, the voltage of the photochromic glass voltage control device rises till the light intensity is within the set standard. The light intensity inside and outside the tunnel is controlled within a certain range through automatic control of the pictures of the tunnel inside and outside the vehicle, so that the problem of fatigue of vision of a driver caused by violent change of the light intensity under the working condition of frequently entering and exiting the tunnel is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of rail transportation, and in particular to a rail transportation vehicle, a control method and a device for automatically adjusting changes in train light intensity. Background Art

[0002] At present, in a complex line environment, the line length of the tunnel group accounts for 60% to 80% of the total line length. Under daytime operating conditions, the light in the tunnel is weak and the light intensity is insufficient. Repeated visual impacts of light intensity are caused to drivers during repeated entry and exit of the tunnel, affecting riding comfort and driving safety.

[0003] CN118804445A discloses a train lighting control system and its operating method. Sensor components are provided to collect at least one of the following sensor data: train sound, tunnel length, vehicle speed, ambient light intensity, and altitude. A controller adjusts the on / off state of the train lighting mechanism based on the target sensor data and train position information collected by a positioning unit. Furthermore, the on / off state of the train tunnel lighting mechanism is controlled when the train enters a tunnel. This achieves coordinated control of the train lighting and the tunnel lighting, effectively reducing the difference in illumination between the vehicle and the interior, thereby lowering brightness contrast. However, this solution does not use the range of illumination variation within the driver's cabin as the basis for determining a series of actions. If the outdoor light intensity is weak, no adjustment is required. Furthermore, no substantive control method is proposed for controlling tunnel lighting. Whether the tunnel lighting is on before the train arrives, and the illumination level at which it is on, are not specified. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a control method and device for rail transit vehicles and automatic adjustment of train light intensity changes in view of the shortcomings of the existing technology, so as to solve the problem of visual fatigue caused by drastic changes in light intensity when drivers frequently enter and exit tunnels.

[0005] To solve the above technical problems, the technical solution adopted by the present invention is: a control method for automatically adjusting the change of train light intensity, comprising the following steps:

[0006] Get the tunnel location;

[0007] If the distance between the train and the tunnel is less than or equal to the set distance, the photochromic glass voltage control device will be disconnected, and when the train passes through the tunnel, the lighting control device in the tunnel will be controlled to operate;

[0008] If the distance between the train and the tunnel is greater than the set distance, it is determined whether the light intensity exceeds the standard. If so, the voltage of the photochromic glass voltage control device is increased until the light intensity is within the set standard.

[0009] The present invention uses the illumination value in the driver's cabin as a judgment basis. Before entering the tunnel, it maintains a comfortable illumination value in the driver's cabin by automatically changing the color and transmittance of the front window glass. When passing through the tunnel, the number and illumination of the tunnel lights are changed in advance through the ground transponder, completing the seamless switching of illumination from outside the tunnel to inside the tunnel, eliminating the driver's visual fatigue, and after the train passes through the tunnel, the exit transponder adjusts / turns off the tunnel lighting, thereby achieving green energy saving.

[0010] The set distance is 5 km.

[0011] The specific implementation process of controlling the operation of the lighting control device in the tunnel includes:

[0012] Adjust the number of lighting devices turned on and the illumination in the tunnel so that the illumination in the tunnel is maintained at 300-500 Lux.

[0013] The specific implementation process of determining whether a train passes through a tunnel includes:

[0014] A ground train passing response device is set at the entrance and exit of the tunnel. If the ground train passing response device at the entrance is turned on and the ground train passing response device at the exit is turned off, it is determined that the train is in the tunnel.

[0015] As an inventive concept, the present invention also provides a control device for automatically adjusting changes in train light intensity, comprising:

[0016] Light intensity tester, used to test the light intensity value in the driver's cabin;

[0017] A color-changing glass voltage control device is used to receive the light intensity value output by the light intensity tester and adjust the voltage according to the light intensity value to adjust the light transmittance of the electrochromic glass;

[0018] The train control system is used to obtain the train's position and determine whether the train has entered a tunnel.

[0019] The control device of the present invention further comprises:

[0020] There are two ground train passing transponders, which are respectively arranged at the entrance and exit of the tunnel. When a train passes through, it triggers a high level and transmits a high level signal to the lighting control device in the tunnel;

[0021] The lighting control device in the tunnel is used to control the number and illumination of the lighting devices in the tunnel.

[0022] In the present invention, the specific implementation process of determining whether a train has entered a tunnel includes:

[0023] A ground train passing response device is set at the entrance and exit of the tunnel. If the ground train passing response device at the entrance is turned on and the ground train passing response device at the exit is turned off, it is determined that the train is in the tunnel.

[0024] As an inventive concept, the present invention also provides a rail transit vehicle provided with the above-mentioned control device.

[0025] Compared with the existing technology, the present invention has the following beneficial effects: the present invention controls the light intensity inside and outside the tunnel within a certain range through automatic control of tunnel photos inside and outside the vehicle, thereby solving the problem of visual fatigue caused by drastic changes in light intensity when drivers frequently enter and exit tunnels. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a control principle diagram of an embodiment of the present invention. DETAILED DESCRIPTION

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, 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 embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0028] Example 1

[0029] This embodiment provides a method for automatically adjusting train light intensity. A light intensity tester in the driver's cab detects internal illumination. When illumination is within the comfortable range of 300-500 Lux, no action is required. When illumination exceeds 500 Lux, the tester sends an enable signal to the electrochromic glass voltage control device, which increases the control voltage to adjust the transmittance of the electrochromic glass to within the comfortable range. When the train's LKJ control system detects that the train is about to enter a tunnel (which can be set at approximately 3-5 km), the electrochromic glass voltage control device receives this position information and disconnects the electrochromic glass control voltage, achieving 100% transmittance after entering the tunnel. A ground train receives a train-passing signal via a transponder and transmits it to the tunnel lighting control device. This device controls the number of tunnel lights and the illumination to adjust light intensity, achieving a flexible transition between light intensity inside and outside the tunnel, maintaining it within the 300-500 Lux range. After the train passes through the tunnel, the lighting returns to its pre-entry level, achieving green energy conservation.

[0030] This embodiment uses the LKJ monitoring system to obtain the specific location of the tunnel on the line (corresponding to the kilometer mark) and determine the train's distance from the tunnel entrance. If the distance is greater than 3-5 kilometers, the internal light intensity meter in the driver's cab measures the internal light intensity. If the light intensity is greater than 500 lux, the voltage of the photochromic glass voltage control device is increased, and the light transmittance of the front window is reduced. If the internal light intensity is less than 500 lux, the light transmittance of the front window is maintained, and the control voltage remains unchanged. If the LKJ monitoring system determines that the train is approximately 3-5 kilometers from the tunnel entrance, the voltage control of the photochromic glass voltage control device is disconnected, the light transmittance of the front window reaches its maximum value, and the train transponders at the tunnel entrance and exit detect the train's entry, the tunnel control device is activated to control the number and illumination of the tunnel lights. After the train passes through the tunnel, the exit transponder detects the train's passage and turns off the additional lighting system in the tunnel, maintaining the original emergency illumination. By coordinating the internal light intensity of the driver's cab inside and outside the tunnel, the light intensity within the driver's field of view is controlled within a certain range, such as 300-500 lux, thereby alleviating the driver's visual fatigue.

[0031] Example 2

[0032] This embodiment achieves light intensity changes through automatic adjustment. The device of this embodiment includes: a light intensity tester in the driver's cab, electrochromic glass, a voltage control device for the electrochromic glass, an LKJ train control system, a ground train passing response device, a tunnel lighting control device, and a tunnel lighting device. The light intensity tester in the driver's cab is used to obtain the numerical value of the light intensity in the driver's cab; the electrochromic glass changes the transmittance by changing the voltage, thereby changing the light intensity in the driver's cab; the electrochromic glass voltage control device receives data from the light intensity tester and is used to adjust the voltage, thereby achieving control of the electrochromic glass; the LKJ train control system can obtain the position information of the train about to enter the tunnel. The ground train passing response device is placed in front of the tunnel entrance (about 5km). When the train passes, it triggers a high level to the tunnel lighting control device; the lighting control device controls the number and illumination of tunnel lights to achieve light intensity adjustment.

[0033] Example 3

[0034] Embodiment 3 of the present invention provides a rail transit vehicle corresponding to the above-mentioned embodiment 2.

[0035] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application.

[0036] Obviously, those skilled in the art may make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application is intended to include these modifications and variations.

Claims

1. A control method for automatically adjusting train light intensity changes, characterized in that: The following steps are involved: Get the tunnel location; If the distance between the train and the tunnel is less than or equal to the set distance, the photochromic glass voltage control device will be disconnected, and when the train passes through the tunnel, the lighting control device in the tunnel will be controlled to operate; If the distance between the train and the tunnel is greater than the set distance, it is determined whether the light intensity exceeds the standard. If so, the voltage of the photochromic glass voltage control device is increased until the light intensity is within the set standard.

2. The control method for automatically adjusting train light intensity changes according to claim 1, characterized in that: The set distance is 5 km.

3. The control method for automatically adjusting train light intensity changes according to claim 1, characterized in that: The specific implementation process of controlling the operation of the lighting control device in the tunnel includes: Adjust the number of lighting devices turned on and the illumination in the tunnel so that the illumination in the tunnel is maintained at 300-500 Lux.

4. The control method for automatically adjusting train light intensity changes according to claim 1, characterized in that: The specific implementation process of determining whether a train passes through a tunnel includes: A ground train passing response device is set at the entrance and exit of the tunnel. If the ground train passing response device at the entrance is turned on and the ground train passing response device at the exit is turned off, it is determined that the train is in the tunnel.

5. A control device for automatically adjusting the change of train light intensity, characterized in that: include: Light intensity tester, used to test the light intensity value in the driver's cabin; A color-changing glass voltage control device is used to receive the light intensity value output by the light intensity tester and adjust the voltage according to the light intensity value to adjust the light transmittance of the electrochromic glass; The train control system is used to obtain the train's position and determine whether the train has entered a tunnel.

6. The control device for automatically adjusting train light intensity changes according to claim 5, characterized in that: Also includes: There are two ground train passing transponders, which are respectively arranged at the entrance and exit of the tunnel. When a train passes through, it triggers a high level and transmits a high level signal to the lighting control device in the tunnel; The lighting control device in the tunnel is used to control the number and illumination of the lighting devices in the tunnel.

7. The control device for automatically adjusting train light intensity changes according to claim 5, characterized in that: The specific implementation process of determining whether a train has entered a tunnel includes: A ground train passing response device is set at the entrance and exit of the tunnel. If the ground train passing response device at the entrance is turned on and the ground train passing response device at the exit is turned off, it is determined that the train is in the tunnel.

8. A rail transit vehicle, characterized in that: It is provided with the control device according to claim 5.

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