Train tail lamp detection system

Abstract

The utility model relates to the field of train tail lamp detection, and provides a train tail lamp detection system which comprises at least one train tail lamp and a detection device, the detection device is connected with the train tail lamp in parallel, and the detection device comprises a controller, at least one current sensor, a voltage sensor, an indicating lamp and / or an alarm device; the controller is electrically connected with the current sensor, the voltage sensor, the indicating lamp and the alarm device. The controller is used for transmitting a control signal, the current sensor is used for detecting branch current of a train tail lamp, the voltage sensor is used for detecting voltage, the indicator lamp is used for displaying different working states, and the alarm device is used for carrying out sound-light alarm prompt when a fault is detected. The train taillight on-line monitoring system realizes safe, reliable and real-time on-line monitoring of the train taillight, ensures the reliability of the detection system, and improves the accuracy and efficiency of train taillight detection.

Description

TECHNICAL FIELD

[0001] The utility model relates to train tail lamp detection field, especially train tail lamp detection system. BACKGROUND

[0002] With the rapid development of rail transit industry in China, the manufacturing technology of rail vehicles including trains and subways is continuously improved. Train tail lamp is an indicator light used to remind the existence of the front car and the braking deceleration of the front car. It is essential to ensure the safety of train running on the track, and is a vital appearance part and active safety function part. During train operation, tail marker lamp failure often occurs, the main reasons are that there is a gap between the tail marker lamp plug and the socket, the power supply lead is disconnected, the LED lamp bead is burned out, and the power switch is turned off by human error, etc., which causes the train tail marker lamp to be not bright, and after the train tail marker lamp is extinguished, the train has no tail marker, if there is a train tracking behind, train rear-end collision accident may occur.

[0003] In 2021, the State Railway Administration issued a new standard for tail side light TB / T2175-2021, which specifies the rated working voltage of train tail lamp: DC 48V, within the voltage fluctuation range of 33.6V-72V, the train tail lamp can work normally, the train tail lamp can work normally under positive and negative polarity of power supply voltage, and the power consumption is not greater than 15W. Because the train tail lamp is composed of the same power lamp beads, in actual use, the train tail lamp is often determined to be burned out under the condition that a certain number of lamp beads are damaged.

[0004] A Chinese patent with publication number CN216102135U discloses a load abnormality detection alarm system and a train tail lamp power failure detection alarm device, which includes a single-chip microcomputer, a current detection module, a first indicator light, a second indicator light and a buzzer. Although the device can monitor the working state of the tail lamp by detecting current changes and sound and light alarm, it lacks self-checking function and cannot monitor the working state of the detection system itself, which may cause the detection system to fail to be discovered in time when it fails, and there is a safety hazard that the detection system fails to be discovered, which reduces the reliability of train tail lamp detection. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model provides a train tail lamp detection system to solve the problem that the prior art lacks self-checking function, cannot monitor the working state of the detection system itself, and may cause the detection system to fail to be discovered in time when it fails.

[0006] The utility model discloses a technical scheme is realized as follows: provide a train tail lamp detection system, the system includes at least one train tail lamp and detection device, the detection device with train tail lamp parallelly connected, wherein,

[0007] The detection device includes a controller, at least one current sensor, a voltage sensor, an indicator light and / or an alarm device.

[0008] The controller is electrically connected to the current sensor, the voltage sensor, the indicator light and the alarm device, respectively.

[0009] The controller is used for transmitting control signals, the current sensor is used for detecting the branch current of the train tail lamp, the voltage sensor is used for detecting voltage, the indicator light is used for displaying different working states, and the alarm device is used for acousto-optic alarm prompt when detecting a fault.

[0010] On the basis of the above technical scheme, preferably, the detection device further includes a self-checking module, the self-checking module is electrically connected to the controller, and the self-checking module is used for monitoring the state of the detection device itself.

[0011] On the basis of the above technical scheme, preferably, the self-checking module includes an AND gate chip U1, resistors R1, R2 and R3, a transistor Q1 and a light-emitting diode L1.

[0012] Pin 3 of the AND gate chip U1 is grounded, pin 5 of the AND gate chip U1 and the collector of the transistor Q1 are connected to 3VDC voltage, pin 6 of the AND gate chip U1 is electrically connected to one end of the resistor R1, the other end of the resistor R1 is electrically connected to the base of the transistor Q1, the emitter of the transistor Q1 is electrically connected to one end of the resistor R2, the other end of the resistor R2 is electrically connected to one end of the light-emitting diode L1, the other end of the light-emitting diode L1 is electrically connected to one end of the resistor R3, and the other end of the resistor R3 is grounded.

[0013] On the basis of the above technical scheme, preferably, the detection device further includes a backup control system, the backup control system is electrically connected to the controller and the self-checking module, respectively, the backup control system and the controller perform real-time data interaction, and the backup control system is used for monitoring the working state of the controller.

[0014] On the basis of the above technical scheme, preferably, the detection device further includes a display screen, the display screen is electrically connected to the controller, and the display screen is used for setting and displaying parameters.

[0015] On the basis of the above technical scheme, preferably, the current sensor adopts a Hall effect current sensor with a model number of HO1-P.

[0016] Preferably, the voltage sensor is a Hall effect voltage sensor with model LV25-P.

[0017] Preferably, the AND gate chip U1 is a logic gate chip with model SN74LVC1G08DBVR.

[0018] Preferably, the alarm device is a multi-layer warning light with model TB53-3T / W-J.

[0019] The train tail lamp detection system has the following beneficial effects compared with the prior art.

[0020] (1) By adopting the parallel connection mode, the controller is responsible for data processing and signal transmission, the current sensor is used to monitor the train tail lamp branch current in real time, the voltage sensor is used to detect the power supply voltage, and the self-checking module is used to monitor the system working state, which realizes the safe, reliable and real-time online monitoring of the train tail lamp, ensures the reliability of the detection system itself, and improves the accuracy and efficiency of the train tail lamp detection.

[0021] (2) By constructing a self-checking module with logic control function with the AND gate chip, the transistor and the light emitting diode, the light emitting diode can be controlled to be on or off according to the system working state, and the self-checking function of the train tail lamp detection system and the visual display of the working state can be realized in combination with the indicator light. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiment or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0023] Figure 1 It is a structural schematic diagram of the train tail lamp detection system of the present application;

[0024] Figure 2 It is a structural schematic diagram of the detection device of the train tail lamp detection system of the present application;

[0025] Figure 3 It is a wiring diagram of the self-checking module of the train tail lamp detection system of the present application;

[0026] Figure 4 It is a train tail lamp monitoring method flow chart of an embodiment of the present application. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0028] Please refer to Figures 1-2 , a train tail lamp detection system is provided, the system includes at least one train tail lamp and detection device, the detection device is connected in parallel with the train tail lamp, wherein,

[0029] The detection device includes a controller, at least one current sensor, a voltage sensor, an indicator light, and a self-checking module.

[0030] The controller is electrically connected with the current sensor, the voltage sensor, and the self-checking module, respectively.

[0031] The controller is used for transmitting control signals, the current sensor is used for detecting the branch current of the train tail lamp, the voltage sensor is used for detecting the voltage, and the self-checking module is used for monitoring the state of the detection device.

[0032] Specifically, in the embodiment, the controller is responsible for data processing and signal transmission, the current sensor is used for real-time monitoring of the branch current of the train tail lamp, the voltage sensor is used for detecting the supply voltage, and the self-checking module is used for monitoring the state of the detection device, which together realizes safe, reliable, and real-time online monitoring of the train tail lamp, ensures the reliability of the detection system itself, and improves the accuracy and efficiency of train tail lamp detection.

[0033] As shown in Figure 3 , the self-checking module includes an AND gate chip U1, resistors R1, R2, R3, a transistor Q1, and a light-emitting diode L1.

[0034] Pin 3 of the AND gate chip U1 is grounded, pin 5 of the AND gate chip U1 and the collector of the transistor Q1 are connected to 3VDC voltage, pin 6 of the AND gate chip U1 is electrically connected with one end of the resistor R1, the other end of the resistor R1 is electrically connected with the base of the transistor Q1, the emitter of the transistor Q1 is electrically connected with one end of the resistor R2, the other end of the resistor R2 is electrically connected with one end of the light-emitting diode L1, the other end of the light-emitting diode L1 is electrically connected with one end of the resistor R3, and the other end of the resistor R3 is grounded.

[0035] Specifically, the self-checking module of the embodiment realizes real-time monitoring of whether the detection device works normally through the circuit design of the gate chip U1, the resistors R1, R2 and R3, the transistor Q1 and the light-emitting diode L1. When the detection device works normally, the light-emitting diode L1 is lit, indicating that the detection device works normally and the equipment is normal. When the detection device fails, the light-emitting diode L1 is extinguished, directly indicating that the equipment is abnormal, thereby improving the reliability and maintenance efficiency of the detection system and ensuring that the train tail lamp detection system can continuously and stably operate.

[0036] The detection device further comprises a backup control system, which is electrically connected with the controller and the self-checking module respectively, and the backup control system and the controller perform real-time data interaction, for monitoring the working state of the controller.

[0037] Specifically, the backup control system and the main controller are electrically connected with the self-checking module through an OR gate. When the main controller fails or the backup control system detects that the main controller fails, the self-checking module can judge that the detection device fails. The double detection of the backup control system and the main controller ensures the reliability of the system. In addition, when the storage battery cannot supply power to the detection device, the self-checking module can also judge that the detection device fails.

[0038] The detection device further comprises an alarm device, which is electrically connected with the controller, and the alarm device is used for acousto-optic alarm prompt when detecting a failure.

[0039] Specifically, the embodiment timely prompts the failure condition through the acousto-optic alarm mode, so that the maintenance personnel can quickly find and handle the problem, improve the failure response speed and processing efficiency, and effectively prevent the failure from being enlarged.

[0040] The detection device further comprises a display screen, which is electrically connected with the controller, and the display screen is used for setting and displaying parameters.

[0041] Specifically, the embodiment realizes the parameter setting and display function through the display screen, provides a man-machine interface, facilitates the operation personnel to adjust the parameters, adapts to the detection of different models of train tail lamps and the definition of train tail lamp failures under different working conditions, and improves the operability and maintenance convenience of the system.

[0042] The detection device further comprises at least one indicator light, which is electrically connected with the controller, and the indicator light is used for displaying different working states.

[0043] In one specific embodiment, the indicator lights include a voltage indicator light, a power indicator light, a device status indicator light, and N train taillight indicator lights, namely the first train taillight indicator light, the second train taillight indicator light, ..., the Nth train taillight indicator light, where N is the number of train taillights, and the train taillight indicator lights correspond to the train taillights in sequence.

[0044] The voltage indicator light is used to indicate abnormal voltage values, the power indicator light is used to indicate the on / off state of the main switch of the detection device, the equipment status indicator light is used to display whether the detection device is working properly, and the first train taillight indicator light, the second train taillight indicator light, ..., the Nth train taillight indicator light are used to indicate the working status of the first train taillight, the second train taillight, ..., the Nth train taillight, respectively.

[0045] Specifically, this embodiment uses different indicator lights to display various working states of the system, providing operators with intuitive status feedback, facilitating quick judgment of system operation, and improving the system's visibility and efficiency.

[0046] In one specific embodiment, the current sensor is a Hall effect current sensor of model HO1-P.

[0047] In one specific embodiment, the voltage sensor is a Hall effect voltage sensor of model LV25-P.

[0048] In one specific embodiment, the AND gate chip U1 is a logic gate chip with model number SN74LVC1G08DBVR.

[0049] In one specific embodiment, the alarm device uses a multi-layer warning light of model TB53-3T / WJ.

[0050] In one specific embodiment, a train taillight monitoring system based on the present invention performs a train taillight monitoring method, such as... Figure 4 As shown, it includes:

[0051] The current sensor detects the current in the train's taillight circuit and feeds the current data back to the control system in real time.

[0052] The current is the branch current of the train taillight. If there are two train taillights on the train, then there are two corresponding train taillight branch currents.

[0053] The two train taillights are connected in parallel to the train electrical cabinet.

[0054] The voltage sensor or voltage detection module detects the voltage data in real time and feeds the data back to the control system to detect the power supply voltage of the train taillights.

[0055] The power supply voltage is the total voltage for supplying power to the train tail light on the train;

[0056] In the case of voltage fluctuation of the total power supply voltage, the train tail light should work normally under the fluctuation voltage within the standard;

[0057] The fluctuation voltage is considered as the normal working voltage;

[0058] The voltage sensor or voltage detection module detects that the total power supply voltage U is not within the normal working voltage range, which is initially considered as a train tail light failure;

[0059] When the branch current value I detected by the current sensor is α*P / U, it is initially considered as a train tail light failure;

[0060] The value of α is the ratio of the number of damaged lamp beads to the total number of lamp beads in actual work, such as the ratio of 3 damaged lamp beads to 27 common lamp beads as α, i.e. 3 / 27=0.88;

[0061] P is the rated power of the train tail light;

[0062] The rated power is different according to different models or brands, and it is 15W in the GB standard;

[0063] The button is provided to set different rated powers through the display screen;

[0064] The initial train tail light failure is controlled by the control system to alarm the alarm device, and the time threshold for continuous alarm is HYtime1;

[0065] The time threshold HYtime2 for continuous alarm of the alarm device is provided;

[0066] HYtime1<HYtime2;

[0067] The initial train tail light failure disappears within HYtime1, which can be considered as a poor contact of the train tail light;

[0068] If the initial train tail light failure exceeds HYtime2, the control system judges that the train tail light is faulty;

[0069] The alarm device is an audible and visual alarm device;

[0070] Other functions of the detection device are realized through the button, including:

[0071] The function of turning off the current sensor is realized by setting button 1;

[0072] The function of turning off the voltage sensor is realized by setting button 2;

[0073] Reset function is realized by setting button 3, that is, when the alarm device alarms, button 3 is pressed, the alarm device stops sound alarm but the alarm lamp is bright;

[0074] Start function is realized by setting button 4, that is, when button 4 is pressed, the alarm lamp is off, if the control system still judges that there is train tail lamp fault, the alarm device alarms randomly by sound and light;

[0075] The detection device has two power supply modes, one is power supply of the train tail lamp, and the other is battery power supply.

[0076] The battery power supply is that when the detection device is connected to the power supply of the train tail lamp, the battery is charged by the power supply, and after the charging is completed, the charging is stopped.

[0077] The above only describes the preferred embodiment of the present application, and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A train tail light detection system, characterized by, The system comprises at least one train tail light and a detection device connected in parallel with the train tail light, wherein, The detection device comprises a controller, at least one current sensor, a voltage sensor, an indicator light and / or an alarm device; The controller is electrically connected with the current sensor, the voltage sensor, the indicator light and the alarm device respectively; The controller is used for transmitting control signals, the current sensor is used for detecting the branch current of the train tail light, the voltage sensor is used for detecting voltage, the indicator light is used for displaying different working states, and the alarm device is used for acousto-optic alarm prompt when a fault is detected; The detection device further comprises a self-checking module electrically connected with the controller, and the self-checking module is used for monitoring the state of the detection device itself.

2. A train tail light detection system as defined in claim 1, wherein, The self-checking module comprises an AND gate chip U1, resistors R1, R2, R3, a transistor Q1 and a light-emitting diode L1. Pin 3 of the AND gate chip U1 is grounded, pin 5 of the AND gate chip U1 and the collector of the transistor Q1 are connected to 3VDC voltage, pin 6 of the AND gate chip U1 is electrically connected with one end of the resistor R1, the other end of the resistor R1 is electrically connected with the base of the transistor Q1, the emitter of the transistor Q1 is electrically connected with one end of the resistor R2, the other end of the resistor R2 is electrically connected with one end of the light-emitting diode L1, the other end of the light-emitting diode L1 is electrically connected with one end of the resistor R3, and the other end of the resistor R3 is grounded.

3. A train tail light detection system as in claim 1, wherein, The detection device further comprises a backup control system electrically connected with the controller and the self-checking module respectively, and the backup control system is used for monitoring the working state of the controller by real-time data interaction with the controller.

4. The train tail light detection system of claim 1, wherein, The detection device further comprises a display screen electrically connected with the controller, and the display screen is used for setting and displaying parameters.

5. A train tail light detection system as in claim 1, wherein, The current sensor adopts a Hall effect current sensor with a model number of HO1-P.

6. A train tail light detection system as in claim 1, wherein, The voltage sensor adopts a Hall effect voltage sensor with a model number of LV25-P.

7. A train tail light detection system as in claim 2, wherein The AND gate chip U1 adopts a logic gate chip with a model number of SN74LVC1G08DBVR.

8. A train tail light detection system as in claim 1, wherein, The alarm device adopts a multilayer warning light with a model number of TB53-3T / W-J.

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