CN211969442U

CN211969442U - LED control system for illumination of rail transit passenger room

Info

Publication number: CN211969442U
Application number: CN202020715988.0U
Authority: CN
Inventors: 董超; 张鑫; 赵汗青; 王书一; 车尔琳; 孙化彬; 赵健成; 孟繁林; 薛冲
Original assignee: Yeal Electric Co ltd
Current assignee: Yeal Electric Co ltd
Priority date: 2020-05-06
Filing date: 2020-05-06
Publication date: 2020-11-20
Anticipated expiration: 2030-05-06

Abstract

The invention discloses an LED control system for lighting in a rail transit passenger room, which belongs to the technical field of LED control and comprises a photosensitive controller, a digital dimming controller, an LED centralized control power supply, an LED light-emitting module, a man-machine interaction system and a train management system; the photosensitive controller is electrically connected with the digital dimming controller through a cable; the digital dimming controller is provided with two groups of switch signal interfaces; the LED centralized control power supply comprises a control signal unit, a fault feedback unit and a redundancy function unit, the control signal unit of the LED centralized control power supply is electrically connected with the digital dimming controller, the fault feedback unit of the LED centralized control power supply comprises a contact relay, the LED light-emitting module adopts cold and warm double-color lamp beads to be connected in parallel and sequenced, so that the guest room illumination has the dimming function, the energy waste is avoided, the LED light-emitting module carries out color temperature adjustment through the digital dimming controller, the comfort is improved, the fault signal of the power module is timely fed back, and the effect of the manpower maintenance efficiency is improved.

Description

LED control system for illumination of rail transit passenger room

Technical Field

The utility model relates to a LED control technology field, concretely relates to in track traffic guest room illumination LED control system.

Background

With the improvement of global environmental awareness, the application of the LED illuminating lamp to the indoor illumination field is rapidly developed, and the LED illuminating lamp has the characteristics of high luminous efficiency, long service life, low working temperature, green and environmental protection and is generally known as a fourth-generation illuminating light source.

Because the LED has small light-emitting area, large luminous flux, concentrated light energy and high response speed, the light source of the passenger room lighting system of the rail transit vehicle adopts LED lighting, but when the LED lights a naked light source, the emitted light is dazzling, the light source is directly applied to the passenger room lighting of the rail transit vehicle, the problems of single light-emitting color and incapability of adjusting the color and temperature can be caused, and the conventional rail transit power supply module has the design of redundancy and backup functions, but lacks the fault feedback function of an LED centralized control power supply.

Therefore, there is a need in the art for a new solution to solve this problem.

SUMMERY OF THE UTILITY MODEL

In order to overcome the not enough of prior art existence, the utility model provides a be used for track traffic guest room illumination LED control system, under the prerequisite that satisfies technical requirement, make the guest room illumination can have the function of adjusting luminance, avoid the energy extravagant, the LED light emitting module that will have cold and warm look simultaneously carries out the colour temperature through digital dimming controller and adjusts, improve the travelling comfort, and give TCMS system IO module with power module fault signal transmission, give HMI through the TCMS system with fault signal transmission and show, manpower maintenance efficiency has been improved.

In order to realize the purpose, the utility model discloses a technical scheme is: a light-emitting diode (LED) control system for rail transit passenger room illumination comprises a photosensitive controller, a digital dimming controller, an LED centralized control power supply, an LED light-emitting module, a man-machine interaction system and a train management system; the photosensitive controller is electrically connected with the digital dimming controller through a cable; the digital dimming controller is provided with two groups of switch signal interfaces; the LED centralized control power supply comprises a control signal unit, a fault feedback unit and a redundancy function unit, wherein the control signal unit of the LED centralized control power supply is electrically connected with the digital dimming controller, the fault feedback unit of the LED centralized control power supply comprises a contact relay, the fault feedback unit of the LED centralized control power supply is electrically connected with the train management system, and the output end of the LED centralized control power supply is electrically connected with the LED light-emitting module; the train management system is electrically connected with the man-machine interaction system; the LED light-emitting modules adopt cold and warm double-color lamp beads which are connected in parallel and are arranged in sequence.

And the positive electrodes of the cold and warm double-color lamp beads share one port.

And the input end of the LED centralized control power supply is electrically connected with a vehicle power supply system.

The photosensitive controller transmits ambient light data by adopting a two-wire system current loop signal of 4-20 milliamperes.

The number of the LED centralized control power supplies is two, wherein one LED centralized control power supply controls odd number passenger room lamp belts, and the other LED centralized control power supply controls even number passenger room lamp belts.

Through the above design scheme, the utility model discloses following beneficial effect can be brought:

1. the photosensitive controller enables the illumination of the passenger room to have a dimming function, and energy waste is avoided.

2. The LED light-emitting module with the cold and warm colors adjusts the color temperature through the digital dimming controller, and the comfort is improved.

3. And the fault signal of the power supply module is transmitted to the I/O module of the TCMS system, and the fault signal is transmitted to the HMI to be displayed through the TCMS system, so that the manpower maintenance efficiency is improved.

Drawings

Fig. 1 is a schematic diagram of the wiring of the lighting LED control system for the rail transit passenger room of the present invention.

Fig. 2 is the utility model relates to a in track traffic guest room illumination LED control system LED centralized control power's fault feedback unit principle schematic diagram.

Fig. 3 is the utility model relates to a arrange the sketch map in track traffic guest room illumination LED control system's LED light emitting module changes in temperature lamp pearl.

Fig. 4 is the utility model relates to a in track traffic guest room illumination LED control system's photosensitive controller wiring principle sketch map.

In the figure, 1 is a photosensitive controller, 2 is a digital dimming controller, 3 is an LED centralized control power supply, 4 is an LED light-emitting module, 5 is a train management system, 6 is a human-computer interaction system, and 7 is a vehicle power supply system.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings

Shown in attached figures 1-4: a LED control system for rail transit passenger room illumination comprises a photosensitive controller 1, a digital dimming controller 2, an LED centralized control power supply 3, an LED light-emitting module 4, a train management system 5 and a man-machine interaction system 6; the photosensitive controller 1 is electrically connected with the digital dimming controller 2 through a cable; the digital dimming controller 2 is provided with two groups of switch signal interfaces; the LED centralized control power supply 3 comprises a control signal unit, a fault feedback unit and a redundancy function unit, the control signal unit of the LED centralized control power supply 3 is electrically connected with the digital dimming controller 2, the fault feedback unit of the LED centralized control power supply 3 comprises a contact relay, the fault feedback unit of the LED centralized control power supply 3 is electrically connected with the train management system 5, and the output end of the LED centralized control power supply 3 is electrically connected with the LED light-emitting module 4; the train management system 5 is electrically connected with the human-computer interaction system 6; the LED light-emitting module 4 adopts the parallel connection sequencing of cold and warm double-color lamp beads.

The specific implementation mode is that a photosensitive controller 1 is added in each compartment, environment light data transmitted by a two-wire system 4-20mA current loop signal is adopted, an optical signal of the environment light is converted into a current signal and is remotely output to a digital dimming controller 2, the digital dimming controller 2 performs comparison operation processing on the received signal, amplifies a PWM (pulse width modulation) signal and transmits the amplified PWM signal to a push-pull circuit in a control signal unit in an LED centralized control power supply to drive an MOSFET (metal oxide semiconductor field effect transistor), when the input PWM is high level, the driving grid level reaching the dimming MOSFET through the push-pull circuit is grounded to be low level, at the moment, an LED-ground is disconnected, the output is low level, when the input PWM is low level, the driving grid level reaching the dimming MOSFET through the push-pull circuit is connected to be high level, at the moment, the LED-ground is connected, and the output is high level. Adjust pulse PWM ripples duty cycle in short and adjust the luminance of LED lamp pearl, play the automatic dimming function. As shown in fig. 4, a 24V power supply (VLoop) is provided by the digital dimmer control to the automatic photoreceptor. The automatic photoreceptor collects external environment light for measurement and then outputs a current of 4-20mA, which is proportional to the intensity of the external environment light. This current is transmitted to a Receiver system (Receiver) via a line. The current then encounters a Resistor (RL) to develop a voltage, which is read out by an analog-to-digital converter (ADC) and then further processed. The connection is back, via a wire, to the voltage source (VLoop) supplying the loop, thus forming a complete loop.

The color temperature adjusting function is realized by that the digital dimming controller 2 sets two groups of switch signal interfaces K1 and K2 and receives an external switch circuit, and the switch signal is DC 110V. The DC110V signal is received when the switch is closed, as indicated by the number "1" and by the number "0" when the switch is not open. The K1 and K2 two groups of signals are combined and arranged to determine 4 color temperature modes, and the output duty ratio of the cold and warm lamp beads of the LED light-emitting module is realized. See table below and output waveform:

K1	K2	color temperature value
			1	1	3000K
0	0	4000K
			0	1	4500K
1	0	6000K

The fault feedback function of the LED centralized control power supply 3 is realized by detecting whether output exists between an LED + and an LED-through a 48V normally closed contact relay (1RLY) in the power supply. As shown in fig. 2, when the power fails, the output is 0, the internal relay is pulled in due to the power-off contact, so that the relay contact (2RLY) in the power failure feedback unit is pulled in and conducted, a high-level DC110V signal is output through the failure port (G1, G2) and transmitted to the man-machine interaction system 6 through the I/O module of the train management system 5 for display, and the failure record and storage are performed inside the train management system 5, so as to remind a maintenance person to replace the failed LED power module in time.

Specifically, the positive electrodes of the cold and warm double-color lamp beads share one port.

Specifically, the input end of the LED centralized control power supply 3 is electrically connected to the vehicle power supply system 7.

Specifically, the light sensing controller 1 transmits ambient light data by using a two-wire current loop signal of 4-20 milliamperes.

The number of the LED centralized control power supplies 3 is two, wherein one LED centralized control power supply controls odd number passenger room lamp belts, and the other LED centralized control power supply controls even number passenger room lamp belts.

It is obvious that the above-described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Claims

1. A LED control system for rail transit passenger room illumination is characterized in that: the intelligent light-sensitive control system comprises a light-sensitive controller (1), a digital dimming controller (2), an LED centralized control power supply (3), an LED light-emitting module (4), a train management system (5) and a man-machine interaction system (6); the photosensitive controller (1) is electrically connected with the digital dimming controller (2) through a cable; the digital dimming controller (2) is provided with two groups of switch signal interfaces; the LED centralized control power supply (3) comprises a control signal unit, a fault feedback unit and a redundancy function unit, the control signal unit of the LED centralized control power supply (3) is electrically connected with the digital dimming controller (2), the fault feedback unit of the LED centralized control power supply (3) comprises a contact relay, the fault feedback unit of the LED centralized control power supply (3) is electrically connected with the train management system (5), and the output end of the LED centralized control power supply (3) is electrically connected with the LED light-emitting module (4); the train management system (5) is electrically connected with the man-machine interaction system (6); the LED light-emitting modules (4) are arranged in parallel by adopting cold and warm bicolor lamp beads.

2. The LED control system for rail transit passenger room lighting according to claim 1, wherein: and the positive electrodes of the cold and warm double-color lamp beads share one port.

3. The LED control system for rail transit passenger room lighting according to claim 1, wherein: the input end of the LED centralized control power supply (3) is electrically connected with a vehicle power supply system (7).

4. The LED control system for rail transit passenger room lighting according to claim 1, wherein: the light sensing controller (1) adopts a two-wire system current loop signal with 4-20 milliamperes to transmit ambient light data.

5. The LED control system for rail transit passenger room lighting according to claim 1, wherein: the number of the LED centralized control power supplies (3) is two, wherein one LED centralized control power supply (3) controls odd number passenger room lamp belts, and the other LED centralized control power supply (3) controls even number passenger room lamp belts.