KR102073954B1 - emergency lighting system with self-diagnostic function for railway vehicle - Google Patents

Abstract

The present invention relates to an emergency lighting system for a railway vehicle equipped with a self-diagnostic function, according to the present invention, the external power input unit 125 and the external power input according to the switching control signal input from the controller 120 The power switch unit 115 for switching to the module 130 or switching the power supply of the rechargeable battery 150 to the LED module 130, the LED module 130, the rechargeable battery 150, and an external power source are input. If not, the control unit 120 for switching the power supply of the rechargeable battery 150 is supplied to the LED module 130, and comprises an operator computer 200, the reference voltage increase change value in the control unit 120 The controller 120 calculates a voltage increase change value of the rechargeable battery 150 while the railroad vehicle is in operation, transmits the calculated voltage increase change value to the operator computer 200, and operates the operator computer 200. ) Is the fortune received from the controller 120. According hayeoseo based on a rise in the voltage change value, and characterized in that it calculates the remaining life of the battery charge, and thus, there is an advantage that can predict the life of the rechargeable battery.

Description

Emergency lighting system with self-diagnostic function for railway vehicle

The present invention relates to a railway vehicle lighting, and in particular, by making it possible to remotely check the remaining life of the rechargeable battery of emergency light installed in the railway vehicle, the presence or absence of the LED and the remaining life of the LED, it is mainly installed on the ceiling of the cabin The present invention relates to an emergency lighting system for railway vehicles equipped with a self-diagnosis function suitable for remotely and conveniently managing emergency lights.

In general, it is required to provide evacuation facilities and structures so that passengers and crews can escape quickly and safely in the event of a fire in a railroad car. This is included.

Emergency lights are installed in guest rooms, restrooms, entrance doors around emergency exits, and are constructed in a redundant structure and operated for more than 30 minutes with brightness of 10 lux or more based on the floor by battery power.

Therefore, emergency lights installed in domestic railroad cars are connected to batteries installed in the cab (high-speed rail cars are also mounted in passenger cars) and operate under the control of on-board computer devices installed in the cab along with other lighting systems. .

The interior lighting system of the railroad car is equipped with cabin side light (top and bottom), cabin reading light, toilet light, nursing room light, door corridor light, switchboard hall light, toilet corridor light, gangway light, crew room light, destination indicator light, It is composed of step lamps, and the on-board computer installed in the cab is controlled according to the conditions such as battery power supply status, charger abnormality and surrounding emergency condition. .

The emergency lights are connected to the battery power and are turned on under the control of the onboard computer.However, if a problem occurs in the power line or communication line due to fire, collision, derailment, or overturning, the emergency lights are turned on despite the emergency condition. It may not be lit. Therefore, additional supplementary measures are necessary to ensure visibility for passengers to evacuate safely under any circumstances.

The technology developed to solve this problem has been disclosed by the patent application No. 10-1774386 (patent date: September 05, 2017) filed by the applicant of the present invention, "Emergency lighting system of the train" is disclosed have.

"Emergency lighting system of trains" according to the above Patent No. 10-1774386 is composed of a control unit, a sensor unit, a power supply unit, a battery unit, an illumination unit, as well disclosed in the registered publication, the railway through a plurality of sensors in an emergency The technical problem is to provide an emergency lighting system that detects the presence of passengers in a vehicle and secures minimal lighting for evacuation of passengers from a battery included in an individual lighting device.

However, the "emergency lighting system of a train" according to the above Patent No. 10-1774386 has the following problems.

The control unit by the emergency lighting system of the train according to the registered patent No. 10-1774386 monitors the external power supply, and if it is determined that an emergency condition is generated through a signal generated from the sensor unit, the control unit controls the power supply unit. The lighting unit is operated to turn on.

As with most general lights, the rest of the lights, except for the emergency lights, are located inside the ceiling and are not visible from the outside. Therefore, in order to check the state of the battery unit and the control unit constituting the emergency lighting system, it must be removed and measured by measuring equipment. However, this task is time consuming and expensive. Nevertheless, the residual life of the components cannot be measured by the equipment, so separate measures must be mobilized.

The emergency lighting system is a device in case an emergency situation occurs, it is very important to maintain a normal state and the life of the component can be guaranteed within a certain period, but there was a problem that there is no special measures.

Document 1: Registered Patent Publication No. 10-1774386 (Notice Date: September 05, 2017) Document 2: Registration Utility Model Publication No. 20-0450358 (Announcement date: September 28, 2010)

The present invention was created to solve the problems of the prior art as described above, the object of the emergency lighting system for railway vehicle equipped with a self-diagnostic function according to the present invention,

First, it is possible to remotely check the remaining life of the rechargeable battery of emergency lamps installed in railway vehicles, check for abnormalities of LEDs, and the remaining life of LEDs. To do it,

Secondly, it is possible to drastically increase the maintenance and management efficiency of the emergency lighting system by diagnosing the state of the rechargeable battery or LED module by itself so that the remote operator can know not only the abnormality but also the remaining life.

Third, because the rechargeable battery repeats charging and discharging according to the driving and stopping of the vehicle, it is necessary to predict how much life remains, so that the prediction of the remaining life can be made.

Fourth, to provide an emergency lighting system for a railway vehicle equipped with a self-diagnosis function that can be expected to predict the remaining life of the LED module to always maintain its role as emergency lighting.

Emergency lighting system for a railway vehicle with a self-diagnosis function of the present invention for achieving the above object, the external power is normally in an emergency state (hereinafter, emergency state) including the railway vehicle overturn, power cut, fire or collision In the emergency lighting system for railway vehicles to provide lighting to the railway vehicle when it is not supplied to the cabin provided in the railway vehicle, an external power detection unit for detecting whether the external power is supplied from the external power supply, and input from the controller A power switching unit for switching the external power input to the LED module or the charging battery power supply to the LED module according to the switching control signal, and an LED module installed in the railway vehicle to provide lighting to the railway vehicle in an emergency situation; When the external power is normally supplied by railroad cars, When the external power supply is cut off, it receives a charging battery for supplying power to the LED module and the voltage value detected by the external power detection unit, and determines whether power is supplied from an external power source based on the received voltage value. The controller determines that the external power is supplied to the LED module when the external power is input, and the controller switches the power of the rechargeable battery to be supplied to the LED module when the external power is not input. The control unit is configured to include an operator computer provided in the cab of the control unit, the reference voltage increase change value is stored in at least one of the control unit and the operator computer, the control unit is stored The voltage rise change value is transmitted to the operator's computer, and the control unit operates a railway vehicle. While periodically detecting the voltage of the rechargeable battery and calculating a voltage increase change value in each cycle of the rechargeable battery based on the detected voltage value of the charge battery, and converting the calculated voltage increase change value to the operator computer. And the operator computer calculates the remaining life of the rechargeable battery based on the change in voltage rise during operation received from the controller.

Emergency lighting system for a railway vehicle with a self-diagnosis function of the present invention having the configuration as described above has the following effects.

First, it is possible to remotely check the remaining life of the rechargeable battery of emergency lamps installed in railway vehicles, the presence of LEDs, and the remaining life of LEDs remotely. As a result, it is convenient to remotely manage the emergency lights installed on the ceiling of the cabin. There is an effect that can be performed.

Second, it is effective to diagnose the status of the rechargeable battery or LED module by the operator remotely and not only whether there is any abnormality but also the remaining life. As a result, it is possible to drastically increase the maintenance and management efficiency of the emergency lighting system. There is.

Third, since the rechargeable battery repeats the charging and discharging according to the driving and the stop of the vehicle, it is necessary to estimate how long the remaining battery life remains, and thus, the residual battery may have an effect of predicting the remaining life.

Fourth, it is possible to predict the remaining life of the LED module has the effect that can always maintain its role as emergency lighting.

1 is a block diagram of an emergency lighting system for a railway vehicle equipped with a self-diagnosis function according to an embodiment of the present invention.
FIG. 2 is a detailed structural diagram of the main part of FIG. 1. FIG.
3 is an exemplary configuration diagram of an essential part of the LED module 130.

Next, with reference to the accompanying drawings a preferred embodiment of the emergency lighting system for railway vehicle equipped with a self-diagnostic function of the present invention will be described in detail.

In the following description of the present invention, detailed descriptions of well-known functions or configurations will be omitted when it is deemed that they may unnecessarily obscure the subject matter of the present invention.

Embodiments according to the concepts of the present invention may be variously modified and may have various forms, and specific embodiments will be illustrated in the drawings and described in detail in the present specification or application.

However, this is not intended to limit the embodiments in accordance with the concept of the present invention to a particular disclosed form, it should be understood to include all changes, equivalents, and substitutes included in the spirit and scope of the present invention.

When a component is said to be "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that another component may be present in the middle. Should be. On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that there is no other component in between. Other expressions describing the relationship between components, such as "between" and "immediately between" or "neighboring to" and "directly neighboring", should be interpreted as well.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. As used herein, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, action, component, part, or combination thereof that is described, and that one or more other features or numbers are present. It should be understood that it does not exclude in advance the possibility of the presence or addition of steps, actions, components, parts or combinations thereof. Like reference numerals refer to like elements throughout.

Emergency lighting system for a railway vehicle equipped with a self-diagnosis function according to an embodiment of the present invention, is disposed in the cabin of a plurality of railway vehicles together with the AC general light and DC, the railway vehicle overturn, power cut, fire or collision In an emergency lighting system for supplying lighting to a passenger compartment of a railway vehicle when the external power is not normally supplied to a cabin provided in the railway vehicle in an emergency state (hereinafter, emergency state), the external power detection unit ( 125, a power switch 115, an LED module 130, a rechargeable battery 150, a controller 120, and an operator computer 200 provided in a cab (not shown) of a railway vehicle.

The external power detector 125 is configured to detect whether external power is supplied from an external power supply (not shown). The external power detector 125 may detect whether external power is supplied by, for example, voltage sensing.

The power switching unit 115 switches the external power input to the LED module 130 according to the switching control signal input from the control unit 120 or switches the power supply of the rechargeable battery 150 to the LED module 130. Configuration.

The LED module 130 is installed in the cabin interior (ceiling or sidewall) of the railroad car to provide lighting to the railroad car in an emergency state.

The rechargeable battery 150 is configured to store power when the external power is normally supplied to the railway vehicle, and supply power to the LED module 130 when the external power supply is cut off such as an emergency state.

The control unit 120 receives a voltage value detected by the external power detection unit 125, and determines whether the power is supplied from an external power source, for example, a railway vehicle in an emergency state based on the received voltage value, When the power is input, the power switching unit 115 switches so that external power is supplied to the LED module 130, and when the external power is not input, the power of the rechargeable battery 150 is transferred to the LED module 130. It is a configuration for switching to be supplied.

Emergency lighting system for a railway vehicle with a self-diagnosis function according to an embodiment of the present invention, the communication module 160 for transmitting the data value output from the control unit 120 to the remote operator computer 200 further includes It is constructed. The communication module 160 and the operator computer 200 may be communicated by, for example, the RS-485 communication standard.

In the emergency lighting system for a railway vehicle with a self-diagnosis function according to an embodiment of the present invention, at least one of the control unit 120 and the operator computer 200 stores a reference voltage increase change value, and the control unit ( When the reference voltage increase change value is stored in the control unit 120, the controller 120 transmits the stored voltage increase change value to the operator computer 200, where the operator computer 200 receives the reference voltage received from the control unit 120. The rising change value is stored in an internal memory, and the control unit 120 detects the voltage of the charging battery 150 periodically, that is, at regular time intervals, while the railroad vehicle is running. The voltage rise change value of the corresponding period (for a predetermined time) of the rechargeable battery 150 is calculated based on the voltage value, and the calculated voltage rise change value is transmitted to the operator computer 200. The operator computer 200 may calculate the remaining life of the rechargeable battery based on the voltage increase change value during operation received from the controller 120.

The operator computer 200 is characterized in that the TCMS (Train Control Management System) for controlling the entire railway vehicle.

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Emergency lighting system for a railway vehicle with a self-diagnosis function according to an embodiment of the present invention, according to the embodiment, the voltage conversion unit for dropping the power source (AC power supply or DC power supply) supplied from the outside to a reference voltage of direct current And a boosting and constant current unit 112 provided at a front end of the LED module 130 and stepping up to an operating voltage for operating each LED of the LED module 130 and outputting it at a constant current; It may be configured to further include a charging circuit unit 152 to control the current charged in the 150 to prevent overcharge.

The voltage converter 111, the boost and constant current unit 112, the external power detector 125, the power switch 115, the controller 120, the LED voltage measurer 142, and the battery voltage measurer 144 ), The voltage detection switching unit 146, the charging circuit unit 152, the charging battery 150 and the communication module 160 is provided in the emergency light 100 for a railway vehicle.

The emergency lighting 100 for a railway vehicle is a lamp that provides lighting by connecting the power of the rechargeable battery 150 to the LED module 130 when the power line is damaged due to an emergency condition and thus cannot receive power from the railway vehicle. As an example, the railroad may be installed mainly on the ceiling of the cabin of the railroad car, and in some embodiments, may be installed on the wall of the cabin.

Emergency lighting system for a railway vehicle with a self-diagnostic function according to an embodiment of the present invention, may be configured to include the emergency lighting 100 and the operator computer 200 for the railway vehicle.

According to the emergency lighting system for a railway vehicle equipped with a self-diagnostic function according to an embodiment of the present invention as described above, it is possible to predict the remaining life of the rechargeable battery 150, which is the earlier the life of the rechargeable battery 150 This is the result of an experimental consideration that the charge voltage is lowered and the charge rise time is shortened to increase the voltage rise change value.

The operator computer 200 receiving the determination determines that the remaining life of the rechargeable battery 150 is short and displays it through the display unit.

In the emergency lighting system for a railway vehicle equipped with a self-diagnosis function according to an embodiment of the present invention, the operator computer 200, the voltage rise change value of the rechargeable battery 150 and the remaining life of the rechargeable battery 150 The battery residual life database 211 is stored in a one-to-one correspondence as a table value. When the operator computer 200 receives the voltage increase change value in the state of being charged from the controller 120, the controller ( Residual life data matched one-to-one with the voltage rise change value received from 120 is extracted, and the extracted residual life data is displayed on a display unit (not shown).

The battery residual life database 211 stores as a statistics table how many hours remain when the voltage increase change value is reached.

When the statistical data value storing the battery life time corresponding to the voltage rise change value as a table value is stored in the operator computer 200, and the voltage rise change value is transmitted from the controller 120, the operator computer 200 Is operated by reading the remaining lifetime data matched one-to-one to the received voltage rise change value and displaying the read lifetime value on the screen display of the operator computer.

For example, except when an emergency occurs and the LED module 130 is turned on by the rechargeable battery 150 for more than 1 hour, the initial voltage is generally 12 V or more and shows a gentle rising curve when the rechargeable battery 150 is charged. . However, at the end of their lifespan, the initial voltage is below 12V and the time to reach 14V is significantly shorter.

In the emergency lighting system for a railway vehicle equipped with a self-diagnosis function according to another embodiment of the present invention, at least one of the control unit 120 and the operator computer 200 at the initial time when the emergency light 100 is installed When the voltage value (hereinafter, referred to as a reference charging voltage value) when the charging battery 150 is fully charged is stored, and the reference charging voltage value is stored in the controller 120, the controller 120 stores the stored reference value. The charging voltage value is transmitted to the operator computer 200, and the controller 120 transmits the detected voltage value of the charged battery 150 and the calculated voltage increase change value together to the operator computer 200. The operator computer 200 may calculate the remaining life of the rechargeable battery 150 based on the charging voltage value and the voltage increase change value during the operation received from the controller 120.

In the emergency lighting system for railway vehicle equipped with a self-diagnosis function according to another embodiment of the present invention, the operator computer 200, the voltage rise change value and the remaining life of the rechargeable battery 150 correspond to the table value one-to-one The battery residual life database 211 is stored and stored, the operator computer 200, the charging voltage in the state in which the charge battery 150 received from the control unit 120 is being charged is the reference charging voltage value If less than, it is characterized in that the remaining life data matched to the voltage rise change value received from the controller 120 in one-to-one extraction and display on the display (not shown).

In the emergency lighting system for railway vehicle equipped with a self-diagnosis function according to another embodiment of the present invention, the control unit 120, when the voltage increase change value during charging is greater than the reference voltage rise change value, the alarm signal Characterized in that the transmission to the operator computer (200).

In the emergency lighting system for a railway vehicle equipped with a self-diagnosis function according to another embodiment of the present invention, the control unit 120 has a charging voltage in a state where the charging battery 150 is being charged, is less than the reference charging voltage value, The alarm signal is transmitted to the operator computer 200 when the voltage increase change value of the charging state is greater than the reference voltage increase change value. The operator computer 200 receiving this determines that the remaining life of the rechargeable battery 150 is short.

In the emergency lighting system for a railway vehicle provided with a self-diagnostic function according to an embodiment of the present invention, the controller 120 is connected between the rechargeable battery 150 and the controller 120 is charged battery 150. Is connected between the battery voltage measuring unit 144 and the charging battery 150 and the battery voltage measuring unit 144 so as to receive a switching control signal from the control unit 120. When the switching control signal is not received from the control unit 120, the voltage detection switching unit 146 switching off the control unit 120 and the charge battery 150 when the switching control signal is received from the control unit 120. ) Is further included and configured.

Preferably, the battery voltage measuring unit 144 is composed of a voltage divider consisting of two resistance elements (R1, R2), the voltage detection switching unit 146 is composed of a relay 146 '. It is done.

When the railway vehicle is supplied with power in a normal state, the charging battery 150 is charged. At this time, the control unit 120 sends an enable signal (switching control signal) to the relay 146 'to change the relay 146' connection to the second switching terminal b, and adjusts the voltage divided by the distribution resistor. The control unit 120 operates to sense.

The controller 120 sends a signal to the relay 146 'when the voltage is sensed to change the connection of the relay 146' to the first switching terminal a so that the rechargeable battery 150 can continue to charge.

According to this, while the rechargeable battery 150 remains in a state capable of being charged, the relay 146 ′ is connected regardless of the charging of the rechargeable battery 150, thereby minimizing the power consumption of the rechargeable battery 150. There is an advantage to this.

That is, by adopting the relay 146 'as described above and connecting the relay 146' only when the controller 120 detects the voltage of the rechargeable battery 150, the power of the rechargeable battery 150 is distributed. Since discharge is continued by the resistors R1 and R2, unnecessary discharge can be prevented.

The controller 120 generates an enable signal (switching control signal) to the relay 146 'when a predetermined time (for example, a 20 minute period) is reached, connecting the charging battery 150 being charged to the distribution resistors R1 and R2. After the detection is completed, the relay 146 'is disconnected.

Next will be described the technical configuration for checking the state of the LED module 130.

In the emergency lighting system for a railway vehicle with a self-diagnosis function according to an embodiment of the present invention, the control unit 120 measures the voltage or current at both ends of the LED module 130 periodically, Transmitting the voltage or current value of the LED module 130 to the operator computer 200, the operator computer 200, the received voltage or current value of the LED module 130, the reference voltage or current stored in the internal memory If the range exceeds or falls short of the LED module 130 is characterized in that it determines the abnormal state.

Specifically, the operator computer 200 is provided in the LED module 130 when the voltage or current value of the received LED module 130 exceeds the reference voltage or current value stored in the internal memory (not shown). It is characterized by determining that at least one or more of the plurality of LEDs are open.

Checking the status of the LED module 130 by measuring the brightness requires a light sensor and the circuit becomes very complicated, so the production cost is problematic, but it is not necessary to determine the abnormality only by changing the voltage or current. It can be immediately confirmed whether the abnormality of the LED module 130 by a simple configuration.

In the emergency lighting system for railway vehicle equipped with a self-diagnosis function according to an embodiment of the present invention, the operator computer 200, the received voltage value of the LED module 130 is smaller than the reference voltage value stored therein At least one of the plurality of LEDs provided in the LED module 130 is characterized in that it is determined that the short-circuited state.

Emergency lighting system for a railway vehicle with a self-diagnosis function according to an embodiment of the present invention, the LED voltage measuring unit 142 for measuring the voltage of both ends of the LED module 130 is further configured, the control unit 120 receives the voltage value measured by the LED voltage measuring unit 142 to recognize the voltage value of the LED module 130.

Next, the technical configuration which predicts the lifetime of LED is demonstrated.

In the emergency lighting system for railway vehicle equipped with a self-diagnosis function according to an embodiment of the present invention, the control unit 120 detects the operation threshold voltage value Vf at which the LED module 130 emits light. The operation threshold voltage value of the detected LED module 130 is transmitted to the operator computer 200.

The operator computer 200 is provided with an LED residual life database 212 in which the operation threshold voltage value of the LED module 130 and the residual life of the LED module 130 correspond to one-to-one as table values, and are stored. When the operator computer 200 receives the operation threshold voltage value Vf from the controller 120, the operator computer 200 extracts LED residual life data that is matched one-to-one to the operation threshold voltage value Vf received from the controller 120. And display the extracted LED residual life data on the display unit.

According to this, the remaining life of the LED module can be predicted by measuring the operating threshold voltage value of the LED module 130.

Next, a method for predicting the remaining life of a rechargeable battery and a method for confirming an abnormality of an LED module of an emergency lighting system for a railway vehicle equipped with a self-diagnosis function according to an embodiment of the present invention will be described.

First, the operation of determining the remaining life of the rechargeable battery will be described.

The control unit 120 stores a voltage value (standard charging voltage value) when the initial charging battery 150 in which the lamp is installed is fully charged and a voltage increase change value (standard voltage rising change value) when being charged. There is,

When the vehicle runs normally, the vehicle power is supplied, so the battery is charged. At this time, the controller 120 measures the voltage periodically (for example, every 20 minutes) and transmits the voltage increase change width data to the operator computer. When the charge battery rises and falls outside the standard, the rechargeable battery sends an alarm signal.

The data sent from the controller 120 to the operator computer are the initial setting values for the voltage value when fully charged and the voltage increase when charged, the voltage and voltage change measured periodically while the vehicle is operating, and an alarm signal. .

Next, a description will be given of how to check the LED module for abnormalities.

The LED module 130 used as an emergency light in a railroad vehicle is configured by combining several LEDs. Although LEDs can be combined in various configurations, FIG. 3 shows an example in which 33 LEDs are connected in parallel by three and 11 are configured in series again. Even if one of the LEDs is damaged, the lighting can be maintained to some extent and the voltage required for LED operation can be lowered, so this series-parallel configuration is widely used in a room light.

LED's optical and electrical characteristics change as they are exposed to electrical shocks (surge, overvoltage, overcurrent, etc.) or end of life. Thus, analyzing these characteristics reveals the state of the LED.

However, if the module is composed of several LEDs, it is not only difficult to grasp the characteristics of the individual LEDs but also does not have a great meaning, but it is necessary to diagnose the characteristics of the LED module 130. When the LED is subjected to an electrical shock, the internal circuitry is open or shorted.

For example, in the case of the LED module shown in FIG. 3, when at least one LED is opened in the LED module 130, a large amount of current is generated in the normal LED because currents distributed in three parallel flows into two. The flow increases brightness and voltage.

In FIG. 3, when 600 mA current is sent through the (+) terminal of the LED module 130, 200 mA current flows through LD1, LD12, and LD23 connected in parallel, respectively. If the LED D1 is open, the current is LED. Since it needs to flow to D12 and LED D23, the current of 300mA increased by 100mA each increases brightness and voltage.

On the other hand, when the LED D1 is shorted, all currents flow to the shorted LED D1 so that the LEDs D12 and LEDs D23 are turned off. At this time, three parallel LEDs show little voltage.

This change in electrical characteristics allows the LED to be monitored. Therefore, the voltage between LED + and LED- can be checked periodically to store data, and to analyze the statistical changes of these data to perform self-diagnosis.

As described above, the preferred embodiments of the present invention have been described, and it is common knowledge in the art that the present invention may be implemented in other specific forms without changing the technical spirit or essential features in addition to the above-described embodiments. It is self-evident to those who have.

Therefore, the above-described embodiments are to be understood as illustrative and not restrictive.

The scope of the invention is indicated by the following claims rather than the above description, and it should be construed that all changes or modifications derived from the meaning and scope of the claims and their equivalents are included in the scope of the invention.

100: emergency lighting
111: voltage converter
112: boost and constant current unit
115: power switching unit
120: control unit
125: external power detector
130: LED module
142: LED voltage measuring unit
144: battery voltage measuring unit
146: voltage detection switching unit
150: rechargeable battery
152: charging circuit
160: communication module
200: operator computer
211: Battery Remaining Life Database
212: LED Residual Life Database

Claims (4)

Emergency lighting for railway vehicles that provide lighting to railway vehicles when the railway vehicle cannot be supplied to a cabin equipped with the railway vehicle in an emergency state (hereinafter, emergency state) including rollover, power interruption, fire or collision. In the system,
An external power detector 125 for detecting whether external power is supplied from an external power supply;
A power switching unit 115 for switching external power input to the LED module 130 according to a switching control signal input from the control unit 120 or switching the power supply of the rechargeable battery 150 to the LED module 130;
An LED module 130 installed inside a cabin of a railroad vehicle and providing lighting to the railroad vehicle in an emergency;
When external power is normally supplied to railway cars, it accumulates Charging battery 150 for supplying power to the LED module 130 when the external power supply is cut off,
Receives a voltage value detected by the external power detection unit 125, and determines whether power is supplied from an external power source based on the received voltage value, when the external power supply is input the power switching unit 115 ) Is switched so that the external power is supplied to the LED module 130, and if the external power is not input, the controller 120 for switching the power of the rechargeable battery 150 is supplied to the LED module 130,
It is configured to include an operator computer 200 is provided in the cab of the railway vehicle,
A reference voltage increase change value is stored in at least one of the controller 120 and the operator computer 200,
When the reference voltage increase change value is stored in the control unit 120, the control unit 120 transmits the stored voltage increase change value to the operator computer 200,
The controller 120 periodically detects the voltage of the charging battery 150 while the railroad vehicle is running, and accordingly detects the voltage of the charging battery 150 based on the detected voltage value of the charging battery 150. Calculate a rise change value, and transmit the calculated rise rise value to the operator computer 200,
The operator computer 200 calculates the remaining life of the rechargeable battery based on the voltage increase change value during operation received from the controller 120,
The operator computer 200,
A battery residual life database 211 is provided in which the voltage rise change value of the rechargeable battery 150 and the residual life of the rechargeable battery 150 correspond to one-to-one correspondence as table values.
When the operator computer 200 receives the voltage increase change value in the state of being charged from the controller 120, the operator computer 200 extracts the residual life data matched one-to-one to the voltage rise change value received from the controller 120, and The extracted residual life data is displayed on the display.
The controller 120 transmits an alarm signal to the operator computer 200 when the voltage increase change value during charging is greater than the reference voltage increase change value.
A battery voltage measurement unit 144 connected between the control unit 120 and the charging battery 150 and allowing the control unit 120 to detect the voltage of the charging battery 150;
Is connected between the charging battery 150 and the battery voltage measuring unit 144, when the switching control signal is received from the control unit 120 is connected to the control unit 120 and the charging battery 150 by switching on, When the switching control signal is not received from the control unit 120, the voltage detection switching unit 146 for switching off the control unit 120 and the charge battery 150 is further included,
The voltage detection switching unit 146 is composed of a relay 146 ',
The control unit 120 is a railway vehicle emergency lighting system having a self-diagnosis function, characterized in that connecting the relay (146 ') only when detecting the voltage of the rechargeable battery (150).
The method according to claim 1,
The controller 120 periodically measures the voltage or current at both ends of the LED module 130, and transmits the measured voltage or current of the LED module 130 to the operator computer 200.
When the voltage value of the received LED module 130 is smaller than the reference voltage value stored therein, the operator computer 200 indicates that at least one or more of the plurality of LEDs included in the LED module 130 is short-circuited. To judge,
LED voltage measuring unit 142 for measuring the voltage of both ends of the LED module 130 is further included, the control unit 120 receives the voltage value measured by the LED voltage measuring unit 142 LED Emergency lighting system for a railway vehicle with a self-diagnosis function, characterized in that for recognizing the voltage value of the module (130).
The method according to claim 1 or 2,
The controller 120 detects an operation threshold voltage value Vf at which the LED module 130 emits light and transmits the detected operation threshold voltage value of the LED module 130 to the operator computer 200. ,
The operator computer 200 is provided with an LED residual life database 212 in which the operation threshold voltage value of the LED module 130 and the residual life of the LED module 130 correspond to one-to-one as table values, and are stored.
When the operator computer 200 receives the operation threshold voltage value Vf from the controller 120, the operator computer 200 extracts LED residual life data that is matched one-to-one to the operation threshold voltage value Vf received from the controller 120. And emergency light system for a railway vehicle with a self-diagnosis function, which displays the extracted LED residual life data on a display unit.
The method according to claim 1,
The operator computer 200 is a railway vehicle emergency lighting system having a self-diagnostic function, characterized in that the TCMS (Train Control Management System) for controlling the entire railway vehicle.

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