JP7198836B2 - on-board equipment - Google Patents

Description

TECHNICAL FIELD The present invention generally relates to a multiplex system control device, for example, a train control device connected to signal equipment such as a railway security device and vehicle equipment, and more particularly to an on-board device mounted on a train.

2. Description of the Related Art Control devices used in the industrial field are required to improve the operating rate of the system, so some control devices are multiplexed. On the other hand, the external input/output device connected to the control device may be a non-multiplexed single relay excitation coil, relay contact, or communication device. In such a case, in the connection between the multiplexed control device and the external input/output device, the output section of the multiplexed control device compares the outputs of each system, and even if one system fails, the other system performs control. Connections may be made in an active/active configuration, or in an active/standby configuration in which the standby system performs processing when a failure occurs in the active system. In addition, when the relay contact of the external input/output device is a single contact input, it is branched inside or outside the multiplexed control device and connected to each system. There is an issue of growth.

Further, in a multiplex system control device, multiplexed devices are distributed, and the devices may be connected by cables. In the industrial field, compliance with EMC standards is required, and in consideration of immunity noise and emission noise that are induced from cables when connecting devices, 24V is used as the interface circuit voltage between devices. A high voltage such as For this reason, it is necessary to secure the creeping surface between the signals inside the substrate, which causes a problem of increasing the size of the multiplex system control device. For example, Patent Document 1 (Japanese Unexamined Patent Application Publication No. 2003-244781) discloses a technology in which an arithmetic device and an external input/output device are connected via an input/output control device.

Also known is a device that houses a board in a body case. When the board is pulled out during maintenance, the cable becomes a hindrance and is inconvenient to handle. Patent Document 2 (Japanese Unexamined Patent Application Publication No. 2008-152413) discloses a technique for pulling out cables from the rear surface without changing the size of the backboard.

Japanese Patent Application Laid-Open No. 2003-244781 JP 2008-152413 A

A multiplex system control device is generally constructed by connecting multiple control devices with cables, and therefore tends to be a large-sized device. Therefore, it is difficult to install the device in a place where the installation space is limited, for example, in the cab of a train.

SUMMARY OF THE INVENTION An object of the present invention is to reduce the size of a multiplex system control device.

A multiplex control device that has a plurality of external connectors connected to one or more external devices from the back side and inputs/outputs information has one or more backboards. Each of the multiplex systems has an input/output control unit that receives and outputs information input via at least one external connector out of a plurality of external connectors, and an arithmetic unit that controls the input/output control unit. It is divided into A multiplexed input/output control unit and a multiplexed arithmetic unit are connected to the front surface of the frontmost backboard of one or more backboards. A plurality of external connectors are connected to the rear surface of the rearmost backboard of the one or more backboards.

According to the present invention, it is possible to reduce the size of the multiplex control device.

1 is an internal see-through perspective view of a dual system control device according to Embodiment 1. FIG. FIG. 2 is an internal see-through side view from the right side of the dual system control device according to the first embodiment; 4 is a diagram showing an electrical connection configuration in the dual system control device according to the first embodiment; FIG. 3 is a circuit configuration diagram of an output unit and an output interface unit; FIG. FIG. 4 is a plan view of the first stage backboard as seen from the front side; It is the top view seen from the back side of the second stage backboard. FIG. 11 is an internal see-through perspective view of a dual system control device according to a second embodiment; FIG. 11 is an internal see-through perspective view of a dual system control device according to a third embodiment; FIG. 11 is an internal see-through side view from the right side of the dual system control device according to the fourth embodiment;

Several embodiments of a multiplex system control device connected to external equipment (an example of external equipment) such as railway equipment will be described below with reference to the drawings.

In the following description, common reference numerals may be used when similar elements are not distinguished, and reference numerals may be used when similar elements are distinguished. For example, when the computing units are not distinguished, they are called "computing section 2", and when they are distinguished, they are sometimes called "computing section 2a" and "computing section 2b".

Further, in each of the following embodiments, a double system composed of 1 system and 2 system is adopted as an example of a multiple system, but the present invention is also applicable to a multiple system other than the double system. be. That is, a dual system control device as an example of the multiple system control device according to the embodiment will be described below.

Further, in the following description, with respect to connection (typically electrical connection) between members, the term “direct connection” means connection between members that are not substantially separated from each other. The members may be connectors and may be fitted to each other, or may be connected by soldering. On the other hand, "indirect connection" means connection between members substantially separated from each other, for example, connection between members via cables or signal lines. Hereinafter, in order to avoid redundancy in the description, expressions such as "directly" or "indirectly" relating to connection will be omitted when it is clear from the drawings.

FIG. 1 is an internal see-through perspective view of a dual system control device according to a first embodiment. In the following description, the "+x direction" corresponds to the "front side" (or "front"), the "-x direction" corresponds to the "back side" (or "back"), and the "+y direction". corresponds to the "right side" (or "right side"), the "-y direction" corresponds to the "left side" (or "left side"), and the "+z direction" corresponds to the "top side" (or "upper side"). ”), and the “−z direction” corresponds to the “lower surface side” (or “below”). The y-axis is orthogonal to the x-axis and the z-axis is orthogonal to the x-axis and the y-axis.

In a dual-system control device 100 for inputting and outputting information having four external connectors 9a to 9d (an example of a plurality of external connectors) connected to one or more external equipment (not shown), the external connectors 9a to One or more backboards 5 connected to 9d are provided. Each of the dual systems (system 1 and system 2) receives and outputs information input via at least one of the external connectors 9a to 9d; It is divided into a calculation section 2 that controls the output control section 4 . Namely, the 1st system is composed of the 1st system input/output control unit 4a and the 1st system calculation unit 2a, and the 2nd system is composed of the 2nd system input/output control unit 4b and the 1st system calculation unit 2b. One or more backboards 5 are connected to dual input/output control (input/output control 4a and 4b) and dual computing units (computing units 2a and 2b). In this way, each system is divided into the input/output control unit 4 and the calculation unit 2, and the external connectors 9a to 9d and the input/output control unit 4 and the calculation unit 2 of each system are connected to one or more backboards 5. Thus, a compact dual system control device 100 can be realized.

The dual system control device 100 further includes an output interface unit 3 connected to one or more backboards 5 and converting dual system outputs from the input/output control units 4a and 4b into one output. The output interface section 3 is also a circuit board. The function of converting a dual system output into a single output is provided on a single circuit board separate from the arithmetic unit 2 and the input/output control unit 4, and the circuit board is connected to the backboard 5. It contributes to realization of the system control device 100 .

The one or more backboards 5 include a backboard 5 arranged in multiple stages along the front-rear direction (x direction), specifically, a first-stage backboard 5a (an example of a first backboard) and a single-stage backboard 5a. A second-level backboard 5b (an example of a second backboard) is provided that is arranged on the back side of the second-level backboard 5a and provided in parallel with the first-level backboard 5a. The input/output control units 4a and 4b, the arithmetic units 2a and 2b, and the output interface unit 3 are detachably connected to the front surface of the first-stage backboard 5a. A member (for example, a connector) on the front surface of the second-stage backboard 5b is removably connected to a member on the back surface of the first-stage backboard 5a, for example. Members on the rear surface of the second-stage backboard 5b, such as connectors (hereinafter referred to as relay connectors) 7a to 7d, can be indirectly (specifically, via cables 8a to 8d) inserted into and removed from external connectors 9a to 9d. Connected. By adopting the multistage backboard 5 along the front-rear direction in this way, it is possible to avoid an increase in the size of a single backboard 5, thereby contributing to the realization of a compact dual system control device 100. do.

As will be described in detail later, the first-stage backboard 5a to which the input/output control units 4a and 4b and the arithmetic units 2a and 2b are connected on the front side has a dedicated signal line (for example, a bus described later) for each of the first and second systems. 30), and the second-stage backboard 5b has a second wiring including a signal line common to the input/output control units 4a and 4b. In this way, by distinguishing between individual signal lines for each system and common signal lines for the dual systems, the multistage backboard 5 can be configured.

A multiplex system control device 100 according to the present embodiment has a rectangular parallelepiped main body case 1 having external connectors 9a to 9d on the back. A first-stage backboard 5a is provided in the main body case 1 in parallel with the front surface of the main body case 1, and is arranged in parallel with the side surface (right surface or left surface) of the main body case 1 along the left-right direction (y direction). However, the computing units 2a and 2b, the input/output control units 4a and 4b, and the output interface unit 3 that connects to the input of the external equipment are directly connected to a member (such as a connector) on the front surface of the first backboard 5a. It is removably connected. A member (for example, a connector) on the front surface of the second-stage backboard 5b parallel to the rear surface of the main body case 1 is connected to a member (eg, a connector) on the back surface of the first-stage backboard 5a so as to be directly insertable and removable. External connectors 9a to 9d are detachably connected to relay connectors 7a to 7d (an example of a plurality of second connectors) on the rear surface of the second backboard 5b via cables 8a to 8d, respectively. . As a result, the redundant control device 100 in which the physically separated first and second systems are accommodated in the small rectangular parallelepiped main body case 1 can be realized.

A first-level backboard 5a has an upper-level connector row 21ua made up of a plurality of upper-level connectors 15ua aligned in the left-right direction on its front surface, and is arranged below the plurality of upper-level connectors 15ua aligned in the left-right direction. and a lower connector row 21da composed of a plurality of stacked lower connectors 15da. The second-level backboard 5b has, on its front surface, an upper-level connector row 21ub composed of a plurality of upper-level connectors 15ub, which are a plurality of connectors aligned in the left-right direction. At least one upper connector 15ub of the second tier backboard 5b is electrically connected to at least one upper connector 15ua of the first tier backboard 5a. A signal connected to the upper connector 15ua of the first backboard 5a is transmitted to the second backboard 5b via the upper connector 15ub of the second backboard 5b. On the rear surface of the second-tier backboard 5b, there is an empty area 23 extending in the left-right direction and secured as a result of a configuration to be described later. is provided. The upper connector 15ub is electrically connected to the relay connector 7 via the wiring of the second backboard 5b, and the relay connector 7 is electrically connected to the external connector 9 via the cable 8. In addition, by providing the external connector 9 with a floating function to absorb mounting errors with the relay connector 7 on the receiving side, collective insertion/removal is possible.

FIG. 2 is an internal see-through side view of the dual system control device 100 from the right side.

A shroud (for example, a compact PCI shroud) 12 is attached to pins extending from the upper connector 15ua on the rear surface of the first stage backboard 5a. As a result, a structure in which the connector can be inserted from both the front and rear sides of the first-level backboard 5a is realized, and the area used for attaching the first-level backboard 5a and the second-level backboard 5b is reduced. can be done. That is, in the second-level backboard 5b, an empty area 23 extending in the left-right direction is secured below an area extending in the left-right direction facing the upper connector row 21ua. Relay connectors 7a to 7d are arranged in the horizontal direction in the empty area 23 on the back of 5b, as described above. That is, an area for mounting the relay connectors 7a to 7d is secured under the second-stage backboard 5b. If the first-level backboard 5a has an area where the relay connectors 7a to 7d can be mounted, the second-level backboard 5b may be omitted. In this embodiment, since the first wiring is connected to the lower connector 15da and the second backboard 5b is connected to the upper connector 15ua, the empty area 23 is secured under the second backboard 5b. However, when the first wiring is connected to the upper connector 15ua and the second backboard 5b is connected to the lower connector 15da, the empty area 23 is secured above the second backboard 5b. you can

Each of the computing unit 2 and the input/output control unit 4 has a connector 11u connected to the upper connector 15ua, and a connector 11d connected to the lower connector 15da directly below the upper connector 15ua. Connectors 11u and 11d are directly removably connected to connectors 15ua and 15ud (see FIG. 1), respectively. The connector 11u may be, for example, a compact PCI J2 connector, and the connector 11d may be, for example, a compact PCI J1 connector.

The duplexing control device 100 according to the present embodiment is a device employing a compact PCI with a board size (the size of the backboard 5) of 3U size, but the board size may be 6U size or free size. Also, this configuration can be realized not only by compact PCI but also by serial signals such as VME, PCI Express, original bus, SPI, and I ² C. In addition, although the above embodiment separated into two connectors J1 and J2 (two connectors 11u and 11d), the number of connectors may be one. In other words, it suffices if the connectors 11u and 11d are logically separated (logically the upper connector 15u and the lower connector 15d), and the connectors 11u and 11d and the connectors 15u and 15d are physically one. It can be a connector.

Next, electrical connection will be described with reference to FIGS. 3 and 4. FIG.

The above-described first wiring of the first-stage backboard 5a includes a plurality of independent compact PCI buses 30, respectively. The above-described second wiring of the second-stage backboard 5b includes a wiring 40 including a branch for converting one input into a dual system input, and outputs from the input/output control units 4a and 4b (that is, two and wirings 42a and 42b through which a heavy system output) flows. If a dual system input is received from an external facility, the wiring 40 may be a wiring that does not include a branch, for example, two wirings in which the dual system input flows to the input/output control units 4a and 4b. .

Regarding the first-level backboard 5a, according to the example of FIG. 3, a plurality of lower-level connectors 15daa are connected to the bus 30a, and there are a plurality of upper-level connectors 15uaa corresponding to the plurality of lower-level connectors 15daa. A plurality of lower connectors 15dab are connected to the bus 30b, and there are a plurality of upper connectors 15uab corresponding to the plurality of lower connectors 15dab. There are one or more lower connectors 15dac that are not connected to any bus 30, and one or more upper connectors 15uac corresponding to the one or more lower connectors 15dac. The plurality of lower connectors 15daa and 15dab are examples of the plurality of first first connectors, the plurality of upper connectors 15uaa and 15uab are examples of the plurality of first second connectors, and one or more lower connectors 15dac and one or more upper connectors 15uac are examples of one or more first third connectors.

Regarding the second-level backboard 5b, according to the example of FIG. 3, there are a plurality of upper-level connectors 15ub connected to a plurality of upper-level connectors 15ua, and relay connectors 7a to 7d. The plurality of upper connectors ub is an example of one or more second first connectors, and the relay connectors 7a to 7d are examples of a plurality of second second connectors.

Each computing unit 2 includes a processing unit 32 (including, for example, a processor and a memory), a bus control unit 31 that controls input/output to/from the bus 30, a connector 11uc connected to the upper connector 15ua, and a lower connector 15da. and a connector 11dc to be connected. Each input/output control unit 4 is connected to a bus control unit 36 that controls input/output to/from the bus 30, an input unit 37 that takes in contact information of external equipment, an output unit 38 that drives a relay or the like, and an upper connector 15ua. and a connector 11di connected to the lower connector 15da. The output interface unit 3 has a relay logic 39, a connector 11uo connected to the upper connector 15ua, and a connector 11do connected to the lower connector 15da. The output interface unit 3 may not have the connector 11do, which is not electrically connected to the second-stage backboard 5b, out of the connectors 11uo and 11do. The arithmetic unit 2 and the input/output control unit 4 belonging to the same system are connected to two or more lower connectors 15 da assigned to the same bus 30 . According to the example of FIG. 3, the computing unit 2a and the input/output control unit 4a belonging to system 1 are connected to the two lower connectors 15daa1 and 15daa2 connected to the bus 30a, and the computing unit 2b and input/output control unit 2b belonging to system 2 A control unit 4b is connected to two lower connectors 15dab1 and 15dab2 connected to another bus 30a. In each system, the processing unit 32 accesses the bus control unit 36 of the input/output control unit 4 of the same system via the bus control unit 31 and the compact PCI bus 30, and takes in the contact information of the external equipment. Also, in each system, the computing unit 2 can access the bus control unit 36 of the input/output control unit 4 of the same system and drive the relay of the external equipment.

The relay connector 7a connected to the external connector 9a via the cable 8a is electrically connected via the wiring 45a to the upper connector 15ub1 electrically connected to the upper connector 15uaa1 to which the computing unit 2a is connected. The relay connector 7b connected to the external connector 9b via the cable 8b is connected via the wiring 40 to the upper connectors 15ub2 and 15ub4 electrically connected to the upper connectors 15uaa2 and 15uab2 to which the input/output control units 4a and 4b are respectively connected. are electrically connected at The relay connector 7c connected to the external connector 9c via the cable 8c is electrically connected via the wiring 41 to the upper connector 15ub3 electrically connected to the upper connector 15uac to which the output interface section 3 is connected. The relay connector 7d connected to the external connector 9d via the cable 8d is electrically connected via the wiring 45b to the upper connector 15ub5 electrically connected to the upper connector 15uab1 to which the computing unit 2b is connected.

At least one of the external connectors 9a-9d, for example the external connector 9b, is an input connector. That is, the contact input from the external equipment is taken in from the input external connector 9b. If the external equipment has a single contact, it must be branched to a dual system input. According to the example of FIG. 3, since the input/output control units 4a and 4b are connected to the upper connectors 15uaa2 and 15uab2 connected to the upper connectors 15ub2 and 15ub4 to which the wiring 40 including the branch is connected, as a result, A wiring 40 is connected to the input section 37a of the 1-system input/output control section 4a and the input section 37b of the 2-system input/output control section 4b. On the other hand, regarding the output to the external equipment, the wiring 42a through which the output from the output section 38a of the 1-system input/output control unit 4a flows and the wiring 42b through which the output from the output section 38b of the 2-system input/output control unit 4b flows It is connected to an upper connector 15ub3 connected to an upper connector 15uac to which the interface section 3 is connected. The output interface unit 3 is connected to the output external connector 9c via the wiring 41 and the relay connector 7c by the relay logic 39, which is the logic of active/active configuration or active/standby configuration and is realized by a mechanical relay or a semiconductor relay. Connected. According to the example of FIG. 4, the relay logic 39 has an active/active configuration, and the outputs (output signals) of the 1 system and the 2 system are matched by the diode 61 to drive the relay 62 . The contact 60 of the driven relay 62 is connected to the external output connector 9c via the relay connector 7c. Outputs that particularly require safety can be configured using a safety relay as the relay 62 in consideration of failure modes. Outputs 38a and 38b may have relay contacts 66a and 66b, respectively.

The dual system control device 100 according to the present embodiment includes a first-system arithmetic unit 2a and an input/output control unit 4a, a second-system arithmetic unit 2b and an input/output control unit 4b, and an output interface unit 3 as a common unit. It is a separate configuration, and the 1st system and the 2nd system are physically separated, and the output interface unit 3 is arranged in the center as a common part of the 1st system and the 2nd system. In addition, the number of input/output points is considered to be different for each system to which the dual system control device 100 is applied. Therefore, it is possible to correspond to the number of input/output points according to the system by increasing or decreasing the number of boards and external connectors. Further, in the dual system control device 100, a single configuration that does not require a dual system configuration may be employed. Specifically, the one-system computing unit 2 and input/output control unit 4 may not be mounted on the first stage backboard 5a.

Note that the dual system control device 100 may be a train control device such as an on-board device or a ground device. The external equipment may be equipment related to trains. The input/output information may be security information and non-security information. The 'security information' may be information belonging to a category of relatively high importance among the information regarding the train, and the 'non-security information' may be information other than the security information among the information regarding the train.

Specifically, for example, the security information includes information about the brake output of the train, the non-security information includes information related to an ATO (Automatic Train Operation) device, and the dual system control device 100 is an on-board device. is. Since this embodiment can provide a compact dual system control device 100, it is preferable that the dual system control device 100 be applied to an on-board device that can be installed in a limited space such as a driver's cab.

More specifically, the train control device may be either an on-board device or a ground device, and communication is performed by radio, for example, between the on-board device and the ground device.

Regarding the on-board device, for example, it is as follows. That is, the on-board equipment identifies the location information of the point by detecting the ground coil installed on the train, and based on this location information, the speed information of the train, and the running permission received from the wayside equipment. Also, if the speed of the train exceeds the speed limit, a brake command may be output to reduce the train speed to below the speed limit. The on-board equipment may transmit information such as train location information to the ground equipment.

The ground equipment may, for example, use physical detectors in the track section and train position information received from the on-board equipment to calculate information such as permission to run the train, and may perform signal control and switch control.

FIG. 5 is a plan view of the first stage backboard 5a viewed from the front side.

As described above, a plurality of lower connectors 15daa are assigned to the bus 30a, and a plurality of lower connectors 15dab are assigned to the bus 30b. Signals between the input/output control unit 4 and the output interface unit 3 and Ethernet signals and asynchronous signals related to communication between the calculation unit 2 and other devices are assigned to the upper connector 15ua (Ethernet is a registered trademark).

Among the plurality of upper connectors 15ua arranged in the horizontal direction, the upper connector 15uac to which the output interface unit 3 is connected is arranged in the center of the upper connector row. Similarly, among the plurality of lower connectors 15da arranged in the horizontal direction , the lower connector 15dac to which the output interface unit 3 is connected is arranged in the center of the lower connector row. As a result, it can be expected that the distances on the signal lines from the input/output control units 4a and 4b of both systems are equalized.

FIG. 6 is a plan view of the second-tier backboard 5b as seen from the rear side.

A connector 15ub1 is connected to the relay connector 7a via a wiring 45a through which a 1-system Ethernet signal and an asynchronous signal flow. Connectors 15ub2 and 15ub4 are connected to the relay connector 7b via branch wiring 40 through which external input signals of the 1st and 2nd systems flow. A connector 15ub3 is connected to the relay connector 7c via a wiring 41 through which an external output signal from the output interface section 3 flows. A connector 15ub5 is connected to the relay connector 7d via a wiring 4tb through which two-system Ethernet signals and asynchronous signals flow.

Example 2 will be described below. At that time, differences from at least one of the above-described embodiments will be mainly described, and explanations of points in common with at least one of the above-described embodiments will be omitted or simplified (this applies to Embodiment 3 and later). is also the same).

FIG. 7 is an internal see-through perspective view of a dual system control device according to the second embodiment.

According to the dual system control device 700 according to the second embodiment, the second stage backboard 5b is divided into a plurality of sub-boards 65 in the horizontal direction. Specifically, for example, the second-stage backboard 5b includes the sub-boards 65b having the second wiring and corresponding to the input/output control units 4a and 4b of the two systems, and the sub-boards 65b that do not have the second wiring. It is divided into one or more sub-boards corresponding to at least one computing unit (specifically, sub-boards 65a and 65c respectively corresponding to two systems of computing units 2a and 2b).

Advantages of dividing into a plurality of sub-boards 65 are, for example, at least one of the following.
- At least one of the first-stage backboard 5a and the second-stage backboard 5b is less likely to be affected by errors in the position of the connector 15. In other words, even if there is an error in the position of the connector 15 for at least one of the first-level backboard 5a and the second-level backboard 5b, the entire second-level backboard 5b can be connected to the first-level backboard 5a. Individual fitting of each of the sub-boards 65a to 65c is easier than fitting.
- In order to absorb misalignment between the first-stage backboard 5a and the second-stage backboard 5b, it is possible to employ floating.
When the number of input/output points increases or decreases depending on the system to which the dual system control device 700 is applied, it is also possible to construct the device 700 by changing the design of only the two-stage backboard 5b.
・The insertion/removal force required to individually fit each of the sub-boards 65a to 65c is greater than the insertion/removal force required to fit the entire second-stage backboard 5b to the first-stage backboard 5a. is small, assembling workability and maintainability are improved (for example, the possibility of damage to the backboard 5a or 5b is reduced.

FIG. 8 is an internal see-through perspective view of a dual system control device according to the third embodiment.

According to the dual-system control device 800 according to the third embodiment, the connector 15ub (specifically, the upper connector 15ub of the second-level backboard 5b) that fits between the first-level backboard 5a and the second-level backboard 5b ) is reduced. Specifically, in the first embodiment, the plurality of upper connectors 15ub include connectors ub other than the connectors 15ub related to signals drawn to the outside of the upper connectors 15ua, that is, connectors ub not related to signals drawn to the outside of the upper connectors 15ua. exists, but in this embodiment such connector 15ub is eliminated.

Further, among the plurality of pins of the connector 15ub that connects the first-level backboard 5a and the second-level backboard 2b, an empty pin to which no signal is assigned is connected to another board (that is, the first-level backboard 5a). ) is assigned. This further reduces the number of connectors 15ub for fitting between the first-stage backboard 5a and the second-stage backboard 5b.

If the number of connectors 15ub for fitting between the first-stage backboard 5a and the second-stage backboard 5b is small, the insertion/removal force for fitting the connectors is reduced, and the assembling workability and maintainability are improved.

FIG. 9 is an internal see-through side view from the right side of the dual system control device according to the fourth embodiment.

According to the dual system control device 900 according to the fourth embodiment, there is no cable 8 between the relay connector 7 mounted on the second-stage backboard 5b and the external connector 9 mounted on the rear surface of the device 900, and the relay connector 7 and the external Instead of the connector 9, an external lead-out connector 80, in other words, a connector in which the relay connector 7 and the external connector 9 are integrated is mounted. This embodiment can be employed in applications where maintenance can be performed from the back of device 900 . The advantage of this embodiment is that the cable 8 inside the body case 1 can be eliminated.

At least one of the following effects can be expected for any of the above Examples 1 to 4.
(1) For each of the computing unit 2, the input/output control unit 4, and the output interface unit 3, it is possible to connect at a low voltage and a low current, and protection parts between the interface circuits become unnecessary, thereby reducing the size. Both reduction in failure rate and reduction in heat generation can be expected.
(2) The drawing direction of the external connector 9 can be freely changed according to the usage conditions.
(3) By consolidating various circuit boards belonging to the dual system into the main body case 1, the number of cables can be reduced, the immunity can be improved, and the emission noise can be reduced.
(4) By adopting a general-purpose bus interface such as VME, compact PCI, or PCIe for each of the arithmetic unit 2 and the input/output control unit 4, commercial products can be expected to be adopted.
(5) If the number of input/output points needs to be increased, the input/output control unit 4 can be added to increase the expandability.
(6) Although various circuit boards belonging to a double system are integrated in the main body case 1, complication of the structure inside the main body case 1 is avoided (for example, many cables are installed in the case 1 for each system). required), and as a result, workability of assembly is good.

Although several embodiments have been described above, these are examples for explaining the present invention, and are not meant to limit the scope of the present invention only to these embodiments. The invention can also be implemented in various other forms. For example, two or more of Examples 1-5 (particularly Examples 1-4) can be combined. Further, the multiplexing control device according to the present invention can be applied not only to train control devices such as on-board devices and ground devices, but also to general control devices used in the industrial field.

100, 700, 800, 900: Dual system controller

Claims (4)

An on -board device mounted in the driver's cab of a train, which has a plurality of external connectors on the back side, which are a plurality of connectors connected to one or more external devices from the back side, and inputs and outputs information,
Equipped with a rectangular parallelepiped case,
The one or more external devices are devices related to trains,
Inside the case,
Equipped with two backboards arranged in multiple stages along the front and back direction,
Of the two backboards, the backboard on the front side is the first backboard and the backboard on the back side is the second backboard,
Each of the dual systems controls an input/output control unit that receives and outputs information input via at least one external connector of the plurality of external connectors, and the input/output control unit. It is divided into a calculation part and
The information to be input and output is security information including information on the brake output of the train, and non-security information including information related to the ATO (Automatic Train Operation) device,
The first backboard has a first wiring that is a wiring including a dedicated signal line for each of the dual systems, and the dual system input/output control unit and the dual system arithmetic and an output interface unit, which is a circuit board for converting the dual system output from the dual system input/output control unit into one output, connected to the front surface,
the second backboard has a second wiring that is a wiring including a signal line common to the dual system input/output control unit, the front surface facing the rear surface of the first backboard, connected to the first backboard and having a rear surface connected to the plurality of external connectors;
each of the dual input/output control units and each of the dual computing units is a circuit board;
The back surface of the case is provided with the plurality of external connectors,
The first backboard is
a plurality of first connectors which are a plurality of connectors connected to the first wiring and provided on the front surface of the first backboard;
a plurality of first second connectors that are not connected to the first wiring and are provided on the front surface of the first backboard and correspond to the plurality of first connectors;
one or more first third connectors, which are one or more connectors not connected to the first wiring but provided on the front surface of the first backboard;
has
the output interface section is connected to at least one of the one or more first third connectors;
For each of the dual systems, two or more first connectors connected to the same signal line of the first wiring, and the input/output control unit and the arithmetic unit belonging to the system, connected to two or more first second connectors corresponding to the two or more first first connectors;
The second backboard is
One or more connectors connected to the plurality of first second connectors and the one or more first third connectors and provided on the front surface of the second backboard and connected to the second wiring. one or more second first connectors that are
a plurality of second connectors, which are a plurality of connectors connected to the plurality of external connectors and provided on the rear surface of the second backboard;
has
The first backboard is
an upper connector row composed of a plurality of upper connectors, which are a plurality of connectors arranged in the left-right direction;
a lower connector row composed of a plurality of lower connectors, which are a plurality of connectors arranged in the horizontal direction and below the plurality of upper connectors;
has
One of the upper connector row and the lower connector row includes the plurality of first first connectors, and the other includes the plurality of first second connectors and the one or more first third connectors. and at least one of
On the back surface of the second backboard, the plurality of second connectors are arranged below an area extending in the left-right direction facing the upper connector row or in the left-right direction facing the lower connector row. lined up in the left-right direction in an empty area, which is an area above the area extending along the left-right direction and extending along the left-right direction,
An on-vehicle device characterized by: at least one of the one or more first third connectors is provided in the center of an area in which the plurality of first second connectors are present;
The on-vehicle device according to claim 1 , characterized in that: A portion of the second backboard that has the second wiring and corresponds to the dual input/output control unit, and a portion that does not have the second wiring and corresponds to at least one computing unit. divided into one or more parts and
The on-vehicle device according to claim 1 , characterized in that: On the back side of the first backboard, the second connector is separated by one or more shrouds applied to one or more first second connectors that are part of the plurality of first second connectors. the one or more second first connectors on the front of the backboard are connected;
With respect to each of the one or more first second connectors, signals relating to parts other than the first second connector are assigned to some pins of the first second connector.
The on-vehicle device according to claim 1 , characterized in that:

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