CN219678719U - Light-adjusting reading lamp for railway vehicle cab - Google Patents
Light-adjusting reading lamp for railway vehicle cab Download PDFInfo
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- CN219678719U CN219678719U CN202321148106.7U CN202321148106U CN219678719U CN 219678719 U CN219678719 U CN 219678719U CN 202321148106 U CN202321148106 U CN 202321148106U CN 219678719 U CN219678719 U CN 219678719U
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- 238000006243 chemical reaction Methods 0.000 description 4
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Abstract
The utility model discloses a dimming reading lamp for a railway vehicle cab, which comprises the following components: the device comprises a power supply and drive control module, a light value sensing module, a light source plate and a knob module; one end of the power supply and drive control module is connected with the light value sensing module, and the other end of the power supply and drive control module is connected with the light source plate. The utility model uses the knob module to switch between automatic dimming state and manual dimming state. Further, in the manual dimming state, the knob module is directly utilized to adjust the illumination intensity of the dimming reading lamp of the railway vehicle cab; under the automatic dimming state, the light value sensing module is utilized to change the illumination brightness state of the light source plate in real time according to the illumination brightness in the current cab, so that the illumination intensity is always kept in a comfortable state for a driver. Therefore, the utility model reduces the glare value when looking at the screen or the indicator lamp during driving, improves the definition and increases the safety degree of a driver during driving.
Description
Technical Field
The utility model relates to the technical field of vehicle lights, in particular to a dimming reading lamp for a railway vehicle cab.
Background
The cab reading lamp is arranged on the cab and used for lighting the interior of the cab. However, the existing reading lamp of the driver's desk can only realize two states of on-off, the light sensation effect is fixed, self-adaption cannot be realized, and the illumination intensity cannot be always kept in a comfortable state for a driver. Thus, a new cab reading light is needed.
Disclosure of Invention
In view of the above, the embodiment of the utility model provides a dimming reading lamp for a cab of a railway vehicle, which aims to solve the technical problems that the cab reading lamp in the prior art can only realize two states of on and off, the light sensation effect is fixed, self-adaption cannot be realized, and the illumination intensity cannot be always kept in a comfortable state for a driver.
The technical scheme provided by the utility model is as follows:
in a first aspect, an embodiment of the present utility model provides a rail vehicle cab dimming reading lamp, including: the device comprises a power supply and drive control module, a light value sensing module, a light source plate and a knob module; one end of the power supply and drive control module is connected with the light value sensing module, and the other end of the power supply and drive control module is connected with the light source plate; the knob module is connected with the power supply and drive control module.
With reference to the first aspect, in a possible implementation manner of the first aspect, the power supply and driving control module includes: the power supply module is connected with the drive control module.
With reference to the first aspect, in another possible implementation manner of the first aspect, the light value sensing module includes at least one light value sensing probe, and a light value sensor is disposed inside each of the light value sensing probes.
With reference to the first aspect, in a further possible implementation manner of the first aspect, the light source board includes an LED soft light bar module, the LED soft light bar module includes at least one LED soft light bar, and each of the LED soft light bars includes at least one LED lamp.
With reference to the first aspect, in a further possible implementation manner of the first aspect, the LED lamp includes a medium power patch super bright light emitting diode and a zener diode.
With reference to the first aspect, in a further possible implementation manner of the first aspect, the LED lamps in each LED soft light bar module are connected in series to form one path, and each path is connected in parallel.
With reference to the first aspect, in a further possible implementation manner of the first aspect, each of the LED soft light bars further includes a current limiting resistor.
With reference to the first aspect, in a further possible implementation manner of the first aspect, the knob module includes an incremental encoder and a power-down flash memory.
The technical scheme provided by the utility model has the following effects:
the dimming reading lamp for the cab of the railway vehicle provided by the embodiment of the utility model comprises the following components: the device comprises a power supply and drive control module, a light value sensing module, a light source plate and a knob module; one end of the power supply and drive control module is connected with the light value sensing module, and the other end of the power supply and drive control module is connected with the light source plate. The utility model uses the knob module to switch between automatic dimming state and manual dimming state. Further, in the manual dimming state, the knob module is directly utilized to adjust the illumination intensity of the dimming reading lamp of the railway vehicle cab; under the automatic dimming state, the light value sensing module is utilized to change the illumination brightness state of the light source plate in real time according to the illumination brightness in the current cab, so that the illumination intensity is always kept in a comfortable state for a driver. Therefore, the utility model reduces the glare value when looking at the screen or the indicator lamp during driving, improves the definition and increases the safety degree of a driver during driving.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a rail vehicle cab dimming reading lamp according to an embodiment of the present utility model;
fig. 2 is a functional block diagram of a voltage conversion circuit according to an embodiment of the present utility model.
Detailed Description
The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "inner", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element in question must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, or can be communicated inside the two components, or can be connected wirelessly or in a wired way. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.
The embodiment of the utility model provides a dimming reading lamp for a railway vehicle cab, as shown in fig. 1, the dimming reading lamp 1 for the railway vehicle cab comprises: the power supply and drive control module 11, the light value sensing module 12, the light source plate 13 and the knob module 14.
One end of the power supply and drive control module 11 is connected with the light value sensing module 12, and the other end is connected with the light source plate 13; the knob module 14 is connected with the power supply and drive control module 11.
It should be appreciated that the rail vehicle cab dimming reading lamp 1 described above also includes other devices, equipment.
Specifically, the power supply and drive control module 11 includes a power supply module 111 and a drive control module 112, wherein the power supply module 111 and the drive control module 112 are connected.
The light value sensing module 12 includes light value sensing probes 121, wherein the number of the light value sensing probes 121 may be one or more, which is not limited in this embodiment, and further, each light value sensing probe 121 is internally provided with a light value sensor 1211.
The light source board 13 includes an LED soft light bar module 131, and further, the LED soft light bar module 131 includes an LED soft light bar 1311, and the LED soft light bar 1311 includes an LED lamp 13111.
The number of the LED soft light bars 1311 and the LED lamps 13111 may be one or more, which is not limited in this embodiment.
Further, the LED lamp 13111 includes a medium power patch superbright light emitting diode 131111 and a zener diode 131112.
Specifically, in the embodiment of the utility model, the LED lamp 13111 adopts a 2835 packaged power patch LED, and a built-in protection zener diode has the advantages of high brightness, high light efficiency, good color temperature uniformity, good heat dissipation performance and the like.
Further, the LED lamps 13111 in the LED soft light bar 1311 are connected in series as one path, and each path is connected in parallel. For example, each soft LED strip 1311 includes 5 LED lamps 13111, and then 5 LEDs are connected in series to form one path, and each path adopts a parallel connection mode, that is, the LED lamps adopt a 5-string N-parallel arrangement mode.
Through this kind of connected mode, even single LED lamp damages the LED lamp that can not influence other ways, and the inside built-in zener diode of LED lamp: when the LED is damaged and broken, the zener diode provides a current channel, so that the other four LEDs of the circuit are not affected to work normally.
Further, the LED soft light bar 1311 also includes a current limiting resistor 13112.
Specifically, the light source board 13 adopts a control mode of overall constant current, namely constant input current is controlled, and each path of LEDs equally divide the current. Each LED can be connected in series with a current limiting resistor, when a certain LED in a single path is short-circuited, the voltage of the path is reduced to enable the current of the path to be suddenly increased and burnt to damage the LED, and at the moment, the current limiting resistor can balance the voltage to play a role in current limiting, so that the influence of single-path faults on the whole is reduced.
Further, the knob module 14 includes an incremental encoder 141 and a power down flash memory 142.
Further, the functions of the respective devices in the above-described rail vehicle cab dimming reading lamp 1 will be described.
Specifically, the brightness adjustment of the LED lamp 13111 is divided into a manual mode and an automatic mode, and the manual mode authority is greater than the automatic mode authority, and the two modes do not interfere with each other.
In the embodiment of the present utility model, the knob module 14 is used to switch between the manual dimming mode and the automatic dimming mode, and default to the automatic mode. Specifically, the automatic dimming mode and the automatic dimming mode can be switched by pressing the knob module 14.
In the manual dimming mode, the light sensing display effect of the LED lamp 13111 in the light source board 13 can be manually changed by directly pressing the knob module 14.
Specifically, in the manual dimming mode, the incremental encoder 141 is mainly controlled to change from 1 gear to 15 gears, the high-low level control value of the IO pin of the singlechip (the driving control module 112) is changed, and the illumination intensity of the LED lamp is adjusted by the PWM duty ratio which is divided into 0% to 100% by the singlechip program processing. Wherein the incremental encoder may convert the displacement into a periodic electrical signal.
Further, since the power-down flash memory 142 is provided, the gear of the incremental encoder is stored when power is lost, and the data stored in the singlechip is continuously executed when power is restored again.
Further, in the automatic dimming mode, the real-time illumination intensity state in the cab is used as a reference value basis, and the light sensation display effect of the LED lamp 13111 in the light source plate 13 is changed in real time.
First, cab power supply DC24V is converted to DC12V, DC5V and dc3.3v using power supply module 111, the functional block diagram of which is shown in fig. 2. Wherein, DC12V is used for driving the light source plate 13, DC12V is used for driving the light value sensor 1211, and DC3.3V is used for driving the singlechip and peripheral circuits.
Next, the illumination intensity of the LED lamp 13111 in the light source plate 13 inside the cab is adjusted by the light value sensor 1211.
Specifically, the light value sensor 1211 detects the ambient illumination brightness in the cab, and transmits the signal to the drive control module 112 to perform PWM dimming, so as to automatically change the display brightness of the flexible LED soft light bar.
In one embodiment, the light value sensor transmits data in an analog-to-digital (AD) conversion mode, converts 4-20 mA current into voltage and supplies the voltage to the IO pin of the singlechip, and the singlechip processes the voltage to adjust the illumination intensity of the LED lamp by the PWM duty ratio.
The dimming reading lamp for the cab of the railway vehicle provided by the embodiment of the utility model comprises the following components: the device comprises a power supply and drive control module, a light value sensing module, a light source plate and a knob module; one end of the power supply and drive control module is connected with the light value sensing module, and the other end of the power supply and drive control module is connected with the light source plate. The utility model uses the knob module to switch between automatic dimming state and manual dimming state. Further, in the manual dimming state, the knob module is directly utilized to adjust the illumination intensity of the dimming reading lamp of the railway vehicle cab; under the automatic dimming state, the light value sensing module is utilized to change the illumination brightness state of the light source plate in real time according to the illumination brightness in the current cab, so that the illumination intensity is always kept in a comfortable state for a driver. Therefore, the utility model reduces the glare value when looking at the screen or the indicator lamp during driving, improves the definition and increases the safety degree of a driver during driving.
In an example, a controllable self-adaptive dimming reading lamp of a railway vehicle cab is provided, and is installed on a driver console and applied to a motor train unit, an intercity motor train and a city railway vehicle, and the controllable self-adaptive dimming reading lamp comprises: the device comprises a power supply control module, a control driving module, an inductive probe, a power-down flash memory, a knob module and a flexible LED soft light bar module. Further, the sensor probe is internally provided with more than 1 optical value sensors.
The power supply control module is integrated with the control driving module and connected with the light value sensing probe and the LED soft light bar module. Through this set of system, can realize detecting the interior ambient light luminance of cab through inductive probe, carry out PWM through signal transmission for control drive module and adjust luminance to automatic change flexible LED soft lamp strip display luminance. In addition, under special conditions, the pressing of the adjusting knob can be performed, and the driving plate is directly controlled, so that the display brightness of the flexible LED soft light bar is changed. The brightness adjustment is divided into a manual mode and an automatic mode, wherein the authority of the manual mode is larger than that of the automatic mode, and the two modes cannot interfere with each other. The special conditions are changed to drive the board to perform DC dimming.
Specifically, the method comprises the following aspects:
1.1 Voltage conversion: the power supply module converts cab power supply DC24V to DC12V, DC5V and DC3.3V.
1.2 light value sensor detection:
the light value sensor is arranged in the sensing probe inside the cab to adjust the light of the illumination environment inside the cab. The probe adopts a real-time acquisition mode. And transmitting data in a mode of analog-to-digital (AD) conversion, converting 4-20 mA current into voltage, supplying the voltage to an IO pin of the singlechip, and processing by a singlechip program to change the illuminance of the lamp by PWM duty ratio.
1.3 knob module:
the automatic state and the manual state can be switched through keys on the knob, the manual state mainly controls the change from 1 gear to 15 gear of the incremental encoder, the high-low level control numerical value of the IO pin of the singlechip is changed, and the PWM duty ratio which is divided into 0% to 100% by the processing of the singlechip program changes the illuminance of the lamp.
Further, due to the fact that the power-down flash memory is arranged, the gear of the incremental encoder can be stored under the condition that power supply is lost, and power supply is restored again to execute data stored in the singlechip.
1.4 flexible LED soft light bar module:
the flexible LED soft light bar module is arranged in the light source plate, wherein the light source plate adopts an FPC flexible circuit board, and has the characteristics of light weight, thin thickness and good flexibility.
The LED adopts 2835 packaged middle-power patch light-emitting diode, and the built-in protection zener diode has the advantages of high brightness, high light efficiency, good color temperature consistency, good heat dissipation performance and the like.
The arrangement mode of the LEDs adopts a 5-string N-parallel arrangement mode, namely 5 LEDs are connected in series to form one path, and each path is connected in parallel. In the connection mode, even if a single LED is damaged, the LEDs on other paths are not affected, and a zener diode is arranged in the LEDs: when the LED is damaged and broken, the zener diode provides a current channel, so that the other four LEDs of the circuit are not affected to work normally.
The light source plate is formed by adopting a control mode of overall constant current, namely constant input current is controlled, and each path of LEDs equally divide the current. Each path of LED can be connected in series with a current limiting resistor, when a certain LED in a single path is short-circuited, the voltage of the path is reduced, so that the current of the path is increased to burn the LED, the effect of the resistor is that the balance voltage plays a role in limiting current, and the influence of the single path fault on the whole is reduced.
The light intensity is adjusted in two modes through the light value sensor and the knob gear control driving module, and the two modes cannot generate mutual interference. Further, the illumination brightness state of the reading lamp is changed through the two modes, and the effects of automatic dimming and manual dimming are achieved, so that the glare value of a screen or an indicator lamp is reduced when a driver looks at the screen or the indicator lamp, the definition is improved, and the safety degree of the driver during driving is increased. Compared with the existing reading lamp of the driver's desk, the automatic dimming reading lamp can only realize two states of on-off, has a fixed light sensation effect, cannot adapt to the reading lamp, has the advantages of controlling and changing intelligent science and technology, more prominently shows people and nature, and more importantly brings safer driving experience for drivers.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.
Claims (8)
1. A rail vehicle cab dimming reading lamp, comprising: the device comprises a power supply and drive control module, a light value sensing module, a light source plate and a knob module;
one end of the power supply and drive control module is connected with the light value sensing module, and the other end of the power supply and drive control module is connected with the light source plate;
the knob module is connected with the power supply and drive control module.
2. The rail vehicle cab dimming reading light of claim 1, wherein the power and drive control module comprises: the power supply module is connected with the drive control module.
3. The rail vehicle cab dimming reading light of claim 1, wherein the light value sensing module comprises at least one light value sensing probe, each light value sensing probe having a light value sensor disposed therein.
4. The rail vehicle cab dimming reading light of claim 1, wherein the light source panel comprises a soft LED light bar module comprising at least one soft LED light bar, each soft LED light bar comprising at least one LED light.
5. The rail vehicle cab dimming reading light of claim 4, wherein the LED light comprises a medium power patch superbright light emitting diode and a zener diode.
6. The dimming reading lamp for the cab of the railway vehicle according to claim 4, wherein the LED lamps in each LED soft lamp strip in the LED soft lamp strip module are connected in series to form one path, and each path is connected in parallel.
7. The rail vehicle cab dimming reading light of claim 6, wherein each of the LED soft light bars further comprises a current limiting resistor.
8. The rail vehicle cab dimming reading light of claim 1, wherein the knob module comprises an incremental encoder and a power down flash.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321148106.7U CN219678719U (en) | 2023-05-11 | 2023-05-11 | Light-adjusting reading lamp for railway vehicle cab |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321148106.7U CN219678719U (en) | 2023-05-11 | 2023-05-11 | Light-adjusting reading lamp for railway vehicle cab |
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| Publication Number | Publication Date |
|---|---|
| CN219678719U true CN219678719U (en) | 2023-09-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321148106.7U Active CN219678719U (en) | 2023-05-11 | 2023-05-11 | Light-adjusting reading lamp for railway vehicle cab |
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| Country | Link |
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| CN (1) | CN219678719U (en) |
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- 2023-05-11 CN CN202321148106.7U patent/CN219678719U/en active Active
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