KR101007186B1 - Vehicle Control Unit for Bimodaltram - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle control apparatus for a bimodal tram, comprising a central controller connected to peripheral devices by can communication, and a multiplexer (Mux, Multiplexer) activated by a can message of the central controller. In a vehicle control apparatus for a modal tram, the central controller is divided into two CAN nodes, and the multiplexers are connected to first and second branches to two multiplexed can nodes, respectively. The unique code is assigned and stored.

Therefore, the present invention can be connected to various devices in the vehicle such as driving operation switches and sensors, various ECUs, etc., and thus, power short-circuit and overvoltage protection are possible, and multiplexers can be changed or added to two multiplexed branches. It can be deleted and has an input / output logic structure that can be easily changed.

Bimodal Tram, Vehicle Control, Central Controller, Multiplexer, Demultiplexer

Description

Vehicle Control Unit for Bimodal Tram {Vehicle Control Unit for Bimodaltram}

The present invention relates to a vehicle control apparatus for a bimodal tram, and more particularly, a vehicle control for a bimodal tram that can be connected to various devices in a vehicle to collect the state of each device, and control the device of the vehicle based on this. Relates to a device.

 Bimodal tram is an eco-friendly vehicle as a new transportation concept, and it is an advanced public transportation that takes into account the weaknesses and has all the advantages of existing railroad cars and buses. Since various electric and electronic devices are installed in the bimodal tram to perform complicated functions, there is a need for a device that comprehensively and effectively manages and supervises these electric and electronic devices.

The bimodal tram may be operated by a single function of electronic and electronic devices (such as lighting of an outdoor unit), but the functions of several electric and electronic devices are usually combined.

The vehicle control device of such a bimodal tram is responsible for monitoring the status of main equipment such as propulsion, braking, and automatic driving, and controlling and status monitoring of general devices such as lamps, air conditioners, and doors.

Existing vehicle control device can perform control operation by combination of analog wiring and relay, but each individual device which controls various devices by central computer (Central Computer) with built-in CPU and performs complex operation They communicate with each other to monitor the individual status of each device.

However, the vehicle control apparatus for a bimodal tram according to the prior art is vulnerable to power short circuit and overvoltage protection, and has a problem in that the in-out logic is complicated and difficult to change.

Accordingly, an object of the present invention is to provide a vehicle control apparatus for a bimodal tram having an input / output logic structure capable of short-circuit and overvoltage protection and easy to change.

In addition, another object of the present invention is a vehicle control apparatus of a bimodal tram so that the system firmware has a Programmable Logic Controller (PLC) structure by CAN (Controller Area Network) communication as a program changeable by the vehicle interface means. To provide.

Vehicle control apparatus for a bimodal tram according to the present invention for achieving the above object of the present invention, a central controller connected to the peripheral devices by the can communication, and multiplexer activated by the can message of the central controller A vehicle control apparatus for a bimodal tram including (Mux, Multiplexer), wherein the central controller is divided into two CAN nodes, and the multiplexers are divided into two multiplexed CAN nodes. It is characterized in that it is connected to two branches (branch), each assigned a unique code and stored.

In this case, the multiplexer is characterized in that five or eight are connected to each branch.

The multiplexer may include an external power supply unit, an interface unit connected by a CAN message of the central controller, an analog unit state input, an analog input, and an address input to various vehicle devices; It is characterized in that it is connected to the output unit for transmitting each output signal to the high-side switch and the low-side switch performing the opposite switching operation to each other.

On the other hand, the central controller and multiplexer is characterized in that the point-to-point connection method for connecting the nodes.

In addition, the central controller and each multiplexer has a terminating resistor, and both ends of the first and second branches are protected by the terminating resistor.

Here, the terminating resistor may be set using jumpers at the ends of the first and second branches.

The terminating resistor is activated at the first and last multiplexers of the branch.

Alternatively, the terminating resistor is activated at the central controller and the last multiplexer.

Meanwhile, when a specific multiplexer of the multiplexers is separated at the N th position of the branch, the multiplexers from the N + 1 th position are separated at the corresponding branch.

According to the vehicle control apparatus for a bimodal tram as described above, it is connected to various devices in a vehicle such as a driving operation switch, a sensor, and various ECUs to monitor the state of the power supply, and thus, a power short circuit and overvoltage protection are possible. The multiplexer can be changed, added, or deleted to provide a vehicle control device for a bimodal tram having an input / output logic structure that can be easily changed.

According to the vehicle control apparatus for a bimodal tram of the present invention, there is an effect that the system firmware has a programmable logic controller (PLC) structure by CAN communication with a program changeable by the vehicle interface means.

As the invention allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. Like reference numerals are used for like elements in describing each drawing.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art and shall not be construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

Hereinafter, with reference to the accompanying drawings, it will be described in detail a preferred embodiment of the present invention.

1 is a block diagram showing an overall configuration of a vehicle control apparatus for a bimodal tram according to an embodiment of the present invention, Figure 2 is a connection configuration of a multiplexer in a vehicle control apparatus for a bimodal tram according to an embodiment of the present invention The block diagram shown.

1 and 2, a vehicle control apparatus for a bimodal tram according to an embodiment of the present invention includes a central controller 100 connected to peripheral devices by can communication, and a can of the central controller 100. A plurality of multiplexers (Mux, Multiplexer) (200) activated by a message, the central controller 100 is divided into two multiplexed CAN nodes (MCAN1, MCAN2), the multiplexer ( 200 is connected to the first and second branches Branch1 and Branch2 to the two multiplexed CAN nodes MCAN1 and MCAN2, respectively, and is assigned and stored with a unique code.

First, the central controller 100 is connected to peripheral devices through a node through can communication, transmits and receives control information and status information from the peripheral devices, and controls the functions of the peripheral devices to operate according to control logic. Send a signal.

At this time, the peripheral devices include a DCU (Door Control Unit) 101, a HVIC (High Voltage IC) 102, an in-vehicle broadcast 103, a passenger information system (PIS) 104, a diagnosis ( Diagnostics 105, Drive Train 106, and the like.

According to the configuration of the multiplexer 200, up to five or eight multiplexers 200 may be connected to the first and second branches of the two multiplexed can nodes MCAN1 and MCAN2. .

Meanwhile, in the central controller 100, CCAN has a wake-up function as a communication connected to a program, DCAN is a communication connected to a demultiplexer, CAN_1 is a communication connected to the DCU 101, and CAN_2 is a HVIC 102. Communication is connected to the CAN_3 is a communication connected to the in-vehicle broadcast 103, CAN_4 is a communication connected to the PIS 104 connected to the inside and outside the vehicle, and the diagnostic (Diagnostic) 105 is an RS232 communication.

The central controller 100 has two multiplexed can nodes MCAN1 and MCAN2 for can communication, and up to eight multiplexers 200 may be connected to each can node MCAN1 and MCAN2. .

As shown in FIG. 2, the central controller 100 includes a central processing unit (CPU) 110 that decodes instructions and executes operations or data processing. The CPU 110 includes CAN buses. ) An activation unit 111 to which an active signal or a wake-up signal is input, an analog digital converter (ADC) 112 for analog / digital data conversion, and a connection port 113 connected to various switches for connection with an in-vehicle device The flash memory 114 may include, but is not limited to, a predetermined amount of flash memory 114 and an EEPROM 115 capable of electrically erasing data.

On the other hand, the multiplexer 200, the external power supply 210, the interface unit 220 connected by the CAN message of the central controller 100, and similar analog state for various vehicle devices Input unit 230 for input, analog input and address input, and output unit 240 for transmitting the respective output signals to the high-side switch (HSS) and low-side switch (LSS) performing the opposite switching operation )

In this case, the power supply unit 210 uses a constant voltage source, and the central controller 100 operates through the CAN bus, and supplies power to the multiplexer 200 through PLUS_G1 or PLUS_G2, MINUS.

In addition, two interface units 220 are provided per connector (CAN_L, CAN_H), CAN_L consists of CAN_L1 and CAN_L2, CAN_H consists of CAN_H1 and CAN_H2, and the CAN_L1 and CAN_L2, CAN_H1 and CAN_H2 are connected internally. It is.

The input unit 230 inputs a pseudo-analog state input-digital input (IN_STATUS), an analog input (IN_ANALOG), and an address input bit (CAN_ID) to each multiplexer 200.

The output unit 240 includes an output port 241 connected to the connection port 113 of the CPU 110, a first output unit 242 for transmitting an output signal to a high-side switch, and a low value. And a second output part 243 for sending an output signal to the side switch.

The output unit 240 uses a separate external power source, and the external power source is protected by using a fuse having a predetermined capacity.

The central controller 100 and the multiplexer 200 are connected in a point-to-point connection manner connecting nodes.

In addition, the central controller 100 and each multiplexer 200 have termination resistors required for the first and last units, and both ends of the first and second branches 1 and 2 are terminated. Should be protected by

These terminating resistors can be set by using jumpers at the ends of the first and second branches (Branch1, Branch2), and are activated in the first and last multiplexers 200 of the respective branches (Branch1, Branch2), Or activated in the central controller 100 and the last multiplexer 200.

Hereinafter, the operation of the vehicle control apparatus for a bimodal tram according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

The bimodal tram is often operated by a combination of functions of a wide variety of electrical devices. The complex operation is controlled by the central controller 100 in which the central processing unit 110 is embedded, and each individual that performs a complex operation is performed. It communicates with devices to monitor their individual status.

As such, the vehicle control apparatus for the bimodal tram according to the embodiment of the present invention is responsible for the control and status monitoring of the devices mounted in the vehicle, mainly monitoring the status of the main equipment (propulsion, braking, automatic driving), and It is in charge of control and status monitoring of general devices (lights, air conditioners, doors, etc.).

In the vehicle control apparatus for the bimodal tram, the central controller 100 and the multiplexer 200 are connected to peripheral devices through nodes by a CAN (Controller Area Network) method, and the classification and information processing of each peripheral device is performed. The can method is determined by the difference in speed or the like.

At system startup, the central controller 100 performs a self-test of the system and verifies that the proper unique code has been assigned to all connected multiplexers 200 so that the multiplexer 200 which is not operating is excluded from the process. .

That is, the central controller 100 identifies the multiplexer 200 changed or newly added during the self test, generates and allocates a new code, and the EEPROM 115 of the multiplexer 200 with the predefined emergency operation parameter. ).

In the event that a change of the multiplexer 200 is not permitted during system operation, the central controller 100 is turned off while the code is not confirmed and the multiplexer 200 is turned off. It is initialized with parameters and assigned new code.

On the other hand, the central controller 100 periodically checks the multiplexer 200, and when the situation in which the multiplexer 200 disappears during system operation occurs, the error code is reset, and the multiplexer 200 returns to normal processing. Will join.

If the multiplexer 200 is not connected to the central controller 100 during the self test, the multiplexer 200 deactivates all outputs by itself, and if the multiplexer 200 is disconnected from the central controller 100 during operation, 'fail safe' '), And converts the output to the saved emergency operation parameters at initialization.

In this case, the fail-safe output state of the multiplexer 200 may be defined as four states such as an output inactive state, an output active state, a last state maintaining state, and an output initialization state.

When the self test is completed, the central controller 100 may select a vehicle device (not shown) connected to the multiplexer 200 according to a logical sequence so that a corresponding device may be operated based on information collected from various vehicle devices. Sends a control signal to control.

Then, the multiplexer 200 is hard-wired with various vehicle devices, collects the state of the device, and transmits the state of the device to the central controller 100, and the control signal of the specific device received from the central controller 100. By controlling the corresponding device.

Meanwhile, when a specific multiplexer among the multiplexers 200 is separated at the N-th position of the branch, the multiplexers from the N + 1 th position are separated at the corresponding branch.

In this case, the central controller 100 assumes that the separate multiplexer 200 has failed or has been removed, but has no effect on other devices in the branch.

Although described with reference to the embodiments above, those skilled in the art will understand that the present invention can be variously modified and changed without departing from the spirit and scope of the invention as set forth in the claims below. Could be.

1 is a block diagram showing the overall configuration of a vehicle control apparatus for a bimodal tram according to an embodiment of the present invention,

2 is a block diagram showing a detailed configuration of a vehicle control apparatus for a bimodal tram according to an embodiment of the present invention.

*** Explanation of symbols for main parts of drawing ***

100: central controller 110: central processing unit

200: multiplexer 210: power supply

220: interface unit 230: input unit

240: output unit

Claims (9)

A vehicle control apparatus for a bimodal tram comprising a central controller connected to peripheral devices by can communication, and a plurality of multiplexers (Mux, Multiplexer) activated by a can message of the central controller. The central controller is divided into two CAN nodes, and the multiplexers are connected to the first and second branches to two multiplexed CAN nodes, respectively, and store unique codes. Vehicle control device for bimodal tram. The method of claim 1, The multiplexer is a vehicle control device for a bimodal tram, characterized in that five or eight are connected to each branch. The method of claim 1, The multiplexer, An external power supply unit, An interface unit connected by the CAN message of the central controller; An analogue input for analog vehicle status input, analog input, and address input for various vehicle devices; Vehicle control device for a bi-modal tram characterized in that it is connected to the high-side switch and the output unit for transmitting the respective output signal to the low-side switch performing the opposite switching operation. The method of claim 1, And said central controller and multiplexer is a point-to-point connection that connects nodes. The method of claim 1, And said central controller and each multiplexer have termination resistors, and both ends of said first and second branches are protected by said termination resistors. The method of claim 5, The terminal resistor is a vehicle control device for a bimodal tram, characterized in that it is set using a jumper (Jumper) at the end of the first and second branches. The method of claim 5, And the termination resistor is activated at the first and last multiplexers of the branch. The method of claim 5, And the terminating resistor is activated at the central controller and the last multiplexer. The method of claim 1, And when a specific multiplexer of the multiplexers is separated at the Nth position of the branch, the multiplexers from the N + 1th position are separated at the branch.

Images