Train vehicle split type logic control unit

Abstract

The utility model relates to the technical field of rail transit, in particular to a split type logic control unit for a train vehicle. The split type logic control unit comprises a main control module, N input and output modules and a power supply, the main control module is connected with the power supply, the input and output modules are connected with the main control module, the number of the input and output modules is N (N is larger than or equal to 1), and each input and output module comprises an input channel and an output channel. And each input and output module is connected with the main control module through a controller area network (CAN) bus. According to the split type logic control unit, the main control module and the input and output module are separated, dynamic marshalling is supported, the access requirements of different vehicles can be met, and the space of vehicle-mounted equipment is saved; the split type design is adopted, problem points can be conveniently determined during later maintenance, replacement and maintenance can be carried out, and reference value is provided for popularization and application of an LCU system on a train.

Description

Technical Field

[0001] The utility model relates to the technical field of rail transportation, in particular to a split-type logic control unit for a train vehicle. Background Art

[0002] On subway trains, relays carry the train logic control and signal transmission, and play an important role in vehicle operation. However, the relays used in subway vehicles are mechanical contacts. As the use time continues to increase, the contact resistance will increase, gradually causing poor contact and subsequent vehicle failure. To address these problems, the logic control unit (LCU) came into being. It is a logic control device specially designed for rail transit trains, used to replace train control relays and realize its corresponding logic control function. Due to the use of contactless control, the inherent defects of relay jamming, jittering, poor contact, etc. are fundamentally avoided, and the overall stability of the subway train control circuit is improved. The transformation of LCU to replace the original relays of the vehicle has been widely used.

[0003] As an integral device, the traditional LCU host can support a fixed number of input and output signals. However, in actual applications, different train vehicles have different requirements for the number of input and output signals. At this time, the LCU host can only configure the equipment according to the maximum number. This will inevitably cause some input and output modules to be idle, wasting resources and occupying unnecessary equipment space in the vehicle. With the improvement of the intelligence level of vehicles, the number of on-board equipment is also increasing. The rational use of equipment space on train vehicles has become a consideration that cannot be ignored.

[0004] The traditional LCU host occupies a large space and is difficult to install. The space available for installing on-board equipment on the train is limited. The traditional LCU host often uses a fixed 3U or 6U chassis. Newly produced trains need to reserve installation space for it. For old car reconstruction projects, the available installation space is limited, and the space requirements will be more stringent. It may not be able to meet the equipment installation space requirements, affecting the application of the LCU system and failing to achieve the application goal of LCU replacing relays.

[0005] The resources of traditional LCU hosts cannot be used efficiently because the chassis design size is fixed and the number of its input and output units is also fixed. However, in actual use, the number of relays that need to be replaced in a single carriage is often limited, resulting in idle and wasted resources of most LCU equipment input and output modules. At the same time, the cost of LCU equipment cannot be reduced as needed.

[0006] In addition, traditional LCU hosts are difficult to operate and maintain. When a fault occurs, the LCU equipment is troubleshooted as a whole, and the faults of the main control part and the input module cannot be located and distinguished in the first time, which brings certain difficulties to the subway operation and maintenance personnel in diagnosing and repairing the faults. Utility Model Content

[0007] The purpose of the utility model is to overcome the defects of the prior art and to propose a train vehicle split logic control unit, which can configure the scale of input and output modules as needed to achieve dynamic combination and efficient utilization of resources.

[0008] In order to achieve the above purpose, the utility model adopts the following specific technical solutions:

[0009] The utility model provides a train vehicle split-type logic control unit, comprising a main control module, an input-output module, and a power supply; the main control module is connected to the power supply, and the input-output module is connected to the main control module; the main control module is used to process data transmitted by the input-output module and output control information, the input-output module is used to collect and process the switch quantity data of the train and transmit it to the main control module, and control the switch quantity according to the control information of the main control module; the number of the input-output modules is N (N≥1), the input-output module comprises an input channel and an output channel, and each input-output module is respectively connected to the main control module through a controller area network (CAN) bus.

[0010] Furthermore, the input channel includes an input interface, a comparator, a parallel-to-serial register, and a photoelectric coupler connected in sequence, and the output channel includes a photoelectric coupler, a MOS driver, a MOS switch, and an output interface connected in sequence.

[0011] Furthermore, the number of input-output modules is 6, and the input-output module includes 32 input channels and 16 output channels.

[0012] Furthermore, each input interface and output interface in the input / output module is provided with an indicator light.

[0013] Furthermore, the main control module and the input / output module are connected via a shielded corrugated tube flexible cable.

[0014] The utility model can achieve the following technical effects:

[0015] The utility model provides a split-type logic control unit for train vehicles, which separates a main control module from an input / output module and supports dynamic grouping, can cope with access requirements of different vehicles and save space for on-board equipment; it does not need to add new connection lines or change the original circuits to replace relays or traditional LCU equipment, and has good compatibility; it only needs to connect the original relay input to the input channel of the LCU input / output module, and the original relay output to the output channel of the LCU input / output module to complete the replacement; different numbers of input / output modules can be matched according to the specific requirements of the number of switches on the train, thus avoiding waste of resources, reducing initial installation costs and subsequent maintenance budgets; the split design makes it easy to identify problem points during subsequent maintenance, and to carry out replacement and repair; the main control module and the input / output module are easy to replace, thus avoiding the trouble of overall replacement, and comprehensively improving the actual application value of the LCU system, thus providing a reference value for the popularization and application of the LCU system on trains. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a connection diagram of a power supply, a main control module and an input / output module provided according to an embodiment of the utility model.

[0017] Figure 2 It is a connection diagram of a main control module and an input / output module provided according to an embodiment of the utility model.

[0018] Figure 3 It is a structural diagram of an input-output module provided according to an embodiment of the utility model.

[0019] Figure 4 It is a structural schematic diagram of a main control module provided according to an embodiment of the utility model. DETAILED DESCRIPTION

[0020] Hereinafter, embodiments of the present utility model will be described with reference to the accompanying drawings. In the following description, the same modules are represented by the same reference numerals. In the case of the same reference numerals, their names and functions are also the same. Therefore, the detailed description thereof will not be repeated.

[0021] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and do not constitute a limitation of the utility model.

[0022] The utility model provides a train vehicle split logic control unit, including a main control module, an input-output module, and a power supply. The connection method of the power supply, the main control module, and the input-output module is as follows: Figure 1As shown, the main control module is connected to the power supply, and the input and output modules are connected to the main control module. The power supply inputs DC110V to the main control module, and the power processing module in the main control module outputs stable DC5V after processing. The main control module outputs DC110V and DC5V to the input and output modules at the same time. The main control module has a power processing circuit inside, and the input and output modules do not need to be configured with a power processing circuit.

[0023] The main control module is used to process the data transmitted by the input and output modules and output control information. The input and output modules are used to collect and process the switch quantity data of the train and transmit it to the main control module, and control the switch quantity according to the control information of the main control module. Figure 2 As shown, the number of input-output modules is N (N≥1), the input-output modules include input channels and output channels, and each input-output module is connected to the main control module via a controller area network (CAN) bus.

[0024] Each input and output module communicates with the main control module through the CAN bus and is independent of each other. The CAN bus hardware interface of the main control module is fixed, and the connected input and output modules are managed through the bus interface. The input and output modules can be connected to any interface of the main control module without distinguishing the access position. The main control module can connect up to 6 groups of input and output modules.

[0025] A single group of input and output modules designed with a 3U chassis size has 32 input channels and 16 output channels, and the input and output channels are configured in a 2:1 ratio. When multiple groups of input and output modules work at the same time, the input and output of each group of input and output modules complete the control of the logic function together, and the input channels and output channels can be shared with each other, that is, the input of group A input and output modules can act on the output of group B input and output modules. A single group of 32 inputs, that is, a single group of input and output modules, can replace 32 relays, and a group of master control modules equipped with 6 groups of input and output modules can replace up to 192 relays. In actual application, different numbers of input and output modules can be equipped according to needs. When the number of replaced relays exceeds 192, a set of master control modules and input and output modules can be added, and the master control modules communicate through MVB.

[0026] The structure of the input and output module is as follows Figure 3 As shown in the figure, the input and output module first steps down the DC110V switch signal, then converts it into a digital signal through a comparator, inputs it into the parallel-to-serial register, and then inputs it into the processing module of the input and output module through an optocoupler isolator. Each input and output is designed with a corresponding indicator light, which is off under normal circumstances and always on when there is input and output. The processing module completes the management of multiple inputs through the parallel-to-serial chip.

[0027] The processing module of the input and output module processes the received input information and transmits it to the main control module. After receiving multiple input information at the same time, the main control module outputs it to the input and output module according to the previously defined logic control function program, and the input and output module controls the output of this channel. The output channel of the input and output module is responsible for outputting the processed drive signal, which is used as the input of the MOS drive after optical isolation, and then used as the drive of the MOS switch to control the DC110V output.

[0028] The structure of the main control module is as follows Figure 4 As shown, the main control module includes an Ethernet communication module, an MVB communication module, a power processing module, a storage module and 6 groups of input and output modules. The Ethernet communication module can realize the download of remote logic function control programs and interact with the train Ethernet; the MVB communication module enables the device to access the train MVB bus and communicate with the train TCMS system; the power management module is used to output stable DC5V and other voltages required by the main control module and input and output modules; the storage module is used to record input and output information, and can download data when the train enters the warehouse. The main control module can change the logic function as needed, and the interface of the input and output module can be replaced in the smallest range to complete the change of the logic control function.

[0029] The main control module and the input and output modules are connected by soft cables. Compared with the traditional integrated LCU, the number of exposed cables is increased. To ensure the safety and stability of the system, shielded corrugated tube cables are used.

[0030] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0031] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

[0032] The above specific implementation methods of the utility model do not constitute a limitation on the protection scope of the utility model. Any other corresponding changes and modifications made according to the technical concept of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A split logic control unit for a train vehicle, characterized in that: It includes a main control module, an input / output module, and a power supply; the main control module is connected to the power supply, and the input / output module is connected to the main control module; the main control module is used to process the data transmitted by the input / output module and output control information, the input / output module is used to collect and process the switch quantity data of the train and transmit it to the main control module, and control the switch quantity according to the control information of the main control module; the number of the input / output module is at least one, the input / output module includes an input channel and an output channel, and each of the input / output modules is connected to the main control module through a controller area network bus.

2. The train vehicle split logic control unit according to claim 1, characterized in that: The input channel includes an input interface, a comparator, a parallel-to-serial register, and a photoelectric coupler connected in sequence, and the output channel includes a photoelectric coupler, a MOS driver, a MOS switch, and an output interface connected in sequence.

3. The train vehicle split logic control unit according to claim 1, characterized in that: The number of the input-output modules is 6, and the input-output modules include 32 input channels and 16 output channels.

4. The train vehicle split logic control unit according to claim 2, characterized in that: Each input interface and output interface in the input / output module is provided with an indicator light.

5. The train vehicle split logic control unit according to claim 1, characterized in that: The main control module is connected to the input and output modules through a shielded corrugated tube soft cable.

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