JP2015020579A - Electric system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve desired communication necessary for a vehicle while suppressing the enlargement of a wiring harness accompanied by an increase of the number of apparatuses to be connected and the versatility of the apparatuses, and also suppressing a cost increase imposed on a control device and a communication device.SOLUTION: An electric system include: a plurality of in-vehicle modules M1, M21 to M23; a smart connecting part J1 having a function of a power distribution and communication control; wiring harnesses W1 to W4 for connecting the modules and the connecting part; and module-side communication control parts which are arranged at points for connecting W1 to W4. As the module-side communication control parts, there are a control circuit incorporated connector part 10 and a multi-driver gateway part 30, the former 10 includes a function which controls apparatuses in the modules, and a communication control function which multiplexes a signal and performs data communication, and the latter 30 includes a massage control function which controls a message to a driver.

Description

  The present invention relates to an electrical system that connects a plurality of modules via a wire harness on a vehicle.

  In a vehicle, various electrical devices are arranged in various locations on a vehicle body in a dispersed state. For example, an electrical device related to the traveling of the vehicle, an electrical device related to audio, an electrical device related to the function of the vehicle body, etc. are arranged at each position such as a steering column, a glove box, a center cluster, and a center console. . Each of such electrical devices is usually equipped with various switches, various sensors, various loads, control relays, and the like.

  It is necessary to supply electric power from such a power source (on-vehicle battery or alternator) to the various electric devices. In addition, it is necessary to transmit signals from switches and sensors provided in each electrical device to other electrical devices or various electronic control units (ECUs) provided in the vehicle.

  Therefore, conventionally, the power source on the vehicle side and various electrical devices and various electronic control devices are connected via the wire harness. Such a wire harness is generally configured by bundling a large number of electric wires. Moreover, the length of each electric wire is adjusted according to the positional relationship of each apparatus, and the shape of a wire harness is determined so that between the apparatuses arrange | positioned at each site | part can be connected reliably. Moreover, the thickness of the electric power supply electric wire which comprises a wire harness is determined according to the magnitude | size of the electric power which the load of each electrical equipment consumes. Furthermore, a connector is connected to the end of each wire bundle constituting the wire harness so that the electrical connection between the wire harness and each device can be easily attached and detached.

  In recent vehicles, many electronic control devices are often mounted at various locations on a single vehicle. Therefore, it is necessary to connect the communication lines included in the wire harness so that the multiple electronic control devices can communicate with each other. Therefore, when the number of electronic control devices mounted on the vehicle increases, the wire harness becomes enlarged, and it becomes difficult to secure a space for arranging the wire harness, and the weight also increases.

  Therefore, the vehicle electrical system disclosed in Patent Document 1 discloses a technique for using a power supply line for supplying power also as a communication line. In Patent Document 1, one power supply line is distributed to a plurality. Further, it is disclosed that a gateway apparatus for forming a control system network and a body system network and exchanging data between these two networks is incorporated in the connection box.

JP 2003-152762 A

  For example, by adopting the technique disclosed in Patent Document 1, it becomes possible to suppress the enlargement of the wire harness. However, in recent vehicles, the contents of control are becoming more complicated, the number of devices mounted on the vehicle is increasing, and the information handled on the vehicle is diversifying. As described, various events to be solved are expected to occur.

(1) For example, if the number of devices to be controlled such as sensors, switches, various loads, etc. increases, the type and amount of data to be generated and data to be processed increase, so a large amount of data can be sent via a communication line in a short time. Must be transmitted. In addition, various data are included in the data to be transmitted, and there are various characteristics such as presence / absence of urgency, necessity of high-speed transmission, presence / absence of redundancy, etc. May occur. Furthermore, in order to improve the reliability of the vehicle, a function for diagnosing disconnection or failure of each device is also required.

(2) For example, when handling multimedia information having continuity such as video and audio, the reproduction operation is interrupted or delayed due to the transmission delay of the signal accompanying communication, so the communication line can be connected to other information. Problems are likely to occur in communication when sharing with transmission or when the transmission speed or transmission quality of the communication line is insufficient.

(3) If the processing of the control device is complicated or the transmission speed is increased in response to the increase in the number of devices to be controlled and the diversification of devices, the cost of the control device and the communication device is inevitably increased. In particular, increasing the number of control devices that perform advanced processing leads to a significant cost increase.

  The present invention has been made in view of the above-described circumstances, and an object of the present invention is to suppress an increase in the number of connected devices and an increase in wire harness accompanying diversification, and to increase the cost of a control device and a communication device. It is an object of the present invention to provide an electrical system capable of realizing desired communication required on a vehicle while suppressing the above.

In order to achieve the above-described object, the electrical system according to the present invention is characterized by the following (1) to (7).
(1) In-vehicle module;
A smart connection unit having a power distribution function for supplying power to a plurality of the in-vehicle modules from a main power supply on the vehicle, and a communication control function for controlling information transmission on the vehicle;
A wire harness connecting between the smart connection part and the plurality of in-vehicle modules;
A module-side communication control unit disposed at each location where the wire harness and the in-vehicle module are connected;
An electrical system comprising:
The module side communication control unit comprises a control circuit built-in connector unit and a multi-driver gateway unit,
The control circuit built-in connector unit has a function of controlling a device in the corresponding in-vehicle module, and a communication control function of multiplexing signals and data communication between the smart connection unit and each device in the in-vehicle module. ,
The multi-driver gateway unit has a message control function for controlling a message for a vehicle driver in addition to the function of the control circuit built-in connector unit.
about.
(2) The electrical system according to (1) above,
The message control function of the multi-driver gateway unit collects information from the corresponding in-vehicle module and outside the in-vehicle module, automatically distinguishes the collected information for each type, and prioritizes according to the priority order according to the type. High-level information is output first to the device in the corresponding in-vehicle module.
about.
(3) The electrical system according to (2) above,
The message control function of the multi-driver gateway unit is configured such that when a plurality of multimedia devices including at least one of a display and an audio output unit are connected to a corresponding in-vehicle module, the plurality of multimedia devices High priority information should be output first to specific multimedia devices with high priority.
(4) The electrical system according to (1) above,
The multi-driver gateway unit includes a wireless communication router function for data communication with a communication network outside the vehicle via a wireless line.
(5) The electrical system according to (1) above,
The wire harness includes a backbone cable configured by bundling a power line, an earth line, a communication wire, and an optical fiber for optical communication.
(6) The electrical system according to (5) above,
The wire harness further includes three independent sets of communication cables respectively assigned to a vehicle body system, a control system, and a multimedia system.
(7) The electrical system according to (1) above,
The plurality of smart connection portions are arranged at different locations on the vehicle, and at least a power line, a ground line, a communication wire, and an optical communication optical fiber are bundled between the plurality of smart connection portions. Connected via a wire harness including backbone cable.

According to the electrical system having the configuration of (1) above, data communication between the smart connection unit and the plurality of in-vehicle modules is multiplexed, so the number of wires such as electric wires necessary for communication is reduced. It can reduce, and the enlargement of the said wire harness can be suppressed. In addition, the module-side communication control unit has two types, a control circuit built-in connector unit and a multi-driver gateway unit, and the functions included in the control circuit built-in connector unit can be minimized. Even when the number of in-vehicle modules increases, the cost increase of the entire system can be suppressed. Further, by using the multi-driver gateway unit, it is possible to optimize the message provided to the vehicle driver.
According to the electrical system having the configuration of (2), among the various information collected by the multi-driver gateway unit, information with higher importance is preferentially output to the device in the module, and the vehicle It can be provided to the driver.
According to the electrical system having the configuration of (3) above, among the various information collected by the multi-driver gateway unit, more important information is output using a specific multimedia device having a higher priority. can do. Therefore, it is possible to optimize the message provision to the driver of the vehicle.
According to the electrical system having the configuration (4), the multi-driver gateway unit can wirelessly connect to a network outside the vehicle such as the Internet and collect various information.
According to the electrical system having the configuration (5), it is possible to perform power supply and data communication using the backbone cable. In addition, since both communication using an electrical signal and communication using an optical signal can be performed at the same time, communication can be optimized.
According to the electrical system having the configuration (6), each of the body system, the control system, and the multimedia system communication control unit can secure a communication line by using an independent communication cable. Therefore, even when a plurality of systems communicate simultaneously, an increase in signal transmission delay time can be suppressed.
According to the electrical system having the configuration of (7) above, a large number of devices arranged at various locations on the vehicle are configured as a plurality of in-vehicle modules, and a plurality of smart connection units are provided between the plurality of in-vehicle modules. And can be connected via a wire harness. In addition, since the module-side communication control unit multiplexes data communication, the number of wires such as electric wires constituting a wire harness that connects between the plurality of smart connection units can be reduced.

  According to the electrical system of the present invention, it is required on the vehicle while suppressing the increase in the number of devices to be connected and the enlargement of the wire harness accompanying diversification, and suppressing the cost increase of the control device and the communication device. Desired communication can be realized.

  The present invention has been briefly described above. Further, the details of the present invention will be further clarified by reading through a mode for carrying out the invention described below (hereinafter referred to as “embodiment”) with reference to the accompanying drawings. .

FIG. 1 is a block diagram illustrating a configuration outline of a main part of the electrical system according to the embodiment. FIG. 2 is a block diagram showing a specific configuration in the vicinity of the instrument panel upper submodule. FIG. 3 is a block diagram illustrating a configuration example of an electrical system for the entire vehicle. FIG. 4 is a block diagram illustrating a basic configuration of a module that does not include a multimedia device. FIG. 5 is a block diagram showing a basic configuration of a module including a multimedia device. FIG. 6 is a longitudinal sectional view showing a sectional structure of the trunk cable.

  Specific embodiments relating to the electrical system of the present invention will be described below with reference to the drawings.

<Outline of electrical system>
An outline of the configuration of the main part of the electrical system in this embodiment is shown in FIG. FIG. 2 shows a specific configuration near the instrument panel upper submodule. Furthermore, the structural example of the electrical system of the whole vehicle is shown in FIG. FIG. 3 shows the layout and connection relationship of each component on a plane when the vehicle is viewed from above.

  That is, the electrical system in the present embodiment is mounted on a vehicle as shown in FIG. Moreover, the outline | summary of only the principal part of the electrical equipment system containing this invention is shown by FIG. Moreover, the more specific structure of the location containing the electrical component module M1 shown by FIG. 1 is shown by FIG.

<System configuration>
As shown in FIG. 3, various electrical component modules M <b> 1 to M <b> 17 are arranged on the vehicle 100 at different positions. In addition to the electrical component module shown in FIG. 3, electrical component modules M21 to M23 shown in FIG. 1 are also present on the vehicle. The outline of the electrical component modules M1 to M17 shown in FIG. 3 is as follows. Note that characteristic matters such as communication and control in each electrical component module will be described later.

M1: A module arranged at the top of the instrument panel, for example, various electrical components such as a meter unit (main part of the instrument panel), a center display, a head-up display (HUD), a speaker, and a multi-driver described later A gateway (GW) unit 30 is included.
M2: A sub-module disposed on the right side of the instrument panel, and includes a switch (SW), an electric motor (MTR), and a control circuit built-in connector section 10 (hereinafter simply referred to as a control connector section) described later. I have.
M3: A sub-module disposed on the left side of the instrument panel, and includes a switch, an electric motor, and a control connector unit 10.
M4: a roof module disposed at a roof portion of the vehicle body, and includes a plurality of lamps (LP) and a control connector unit 10.
M5: A lamp module disposed on the front right side of the vehicle body, and includes a lamp, an electric motor, a solid state relay (SSR), and a control connector unit 10.
M6: A lamp module disposed on the front left side of the vehicle body, and includes a lamp, an electric motor, a solid state relay, and a control connector unit 10.
M7: A lamp module disposed on the rear right side of the vehicle body, and includes a lamp, an electric motor, a solid state relay, and a control connector unit 10.
M8: A lamp module disposed on the rear left side of the vehicle body, and includes a lamp, an electric motor, a solid state relay, and a control connector unit 10.
M9: A front end module disposed at the front end of the vehicle body, and includes a plurality of solid state relays and a driver module DM. The driver module DM performs on / off control of a load (such as SSR) according to the received signal.
M10: A rear end module disposed at the rear end of the vehicle body, and includes a plurality of solid state relays and a driver module DM.
M11: A front door module disposed at the front right door of the vehicle body, and includes a switch, an electric motor, a solid state relay, and a driver module DM.
M12: A front door module disposed at the front left door of the vehicle body, and includes a switch, an electric motor, a solid state relay, and a driver module DM.
M13: A rear door module disposed at the position of the rear right door of the vehicle body, and includes a switch, an electric motor, a solid state relay, and a driver module DM.
M14: A rear door module disposed at the rear left door of the vehicle body, and includes a switch, an electric motor, a solid state relay, and a driver module DM.
M15: A seat module disposed at the right seat, and includes a switch, an electric motor, a solid state relay, and an electronic control unit (ECU) for controlling the position and posture of the right seat.
M16: A seat module disposed at the left seat, and includes a switch, an electric motor, a solid state relay, and an electronic control device for controlling the position and posture of the left seat.
M17: An audio module that can be placed at the center of the instrument panel, etc., and includes a power amplifier, a media driver, and the like. The media driver controls various media that hold content to be played (moving images, music, etc.).

  On the other hand, as shown in FIG. 3, four connection boxes (smart J / B) J1 to J4 are provided on the vehicle 100 at different positions. Each of the electrical component modules M1 to M17 described above is connected to one or more of the connection boxes J1 to J4 via the wire harness WH. An integrated ECU for controlling the entire vehicle is connected to the connection box J1.

  Each of the connection boxes J1 to J4 has a function of distributing power supplied from the main power supply of the vehicle and supplying it to each load connected under the control, and a function of controlling communication. The main power source of the vehicle is an in-vehicle battery or an alternator (generator), and on / off of power supply is controlled according to a key position (key position) used for driving the vehicle.

  The wire harness WH used in the present embodiment includes a backbone cable W1, a body LAN cable W2, a control LAN cable W3, and a multimedia LAN cable W4. Each of the backbone cable W1, the body LAN cable W2, the control LAN cable W3, and the multimedia LAN cable W4 connects the connection boxes J1 to J4. A power line for supplying power from the main power source of the vehicle to each part is included in the backbone cable W1.

<Configuration of main parts of electrical system>
In the electrical system shown in FIG. 3, the configuration of FIG. 1 and FIG. In FIG. 1, the connection box J1, the electrical component module M1, and the main components connected in the vicinity thereof in FIG. 3 are shown. FIG. 2 shows an internal configuration of the electrical component module M1 and a specific connection state between the electrical component module M1 and the connection box J1.

<Description of wire harness WH>
As shown in FIG. 2, between the connection box J1 and the electrical component module M1, the backbone cable W1, the body LAN cable W2, the control LAN cable W3, and the multimedia LAN cable W4 included in the wire harness WH are connected. Are connected to each other.

  As shown in FIG. 2, a multi-driver gateway unit 30 is disposed at a location where the connection box J1 is connected to the outside, and a backbone cable W1, a body LAN cable W2, a control LAN cable W3, and a multimedia LAN cable W4 is connected to the multi-driver gateway unit 30.

  As shown in FIG. 6, the trunk cable W1 is composed of six independent wires W1a, W1b, W1c, W1d and fibers W1e, W1f. The wire W1a is an electric wire for supplying power, and the wire W1b is an electric wire for grounding (GND: ground) wiring. The wire W1c is an electric wire for communicating (receiving) with an electric signal, and the wire W1d is an electric wire for communicating (transmitting) with an electric signal. The wires W1a, W1b, W1c, and W1d are each coated with an electrically insulating material. The fiber W1e is an optical fiber for communicating (receiving) with an optical signal, and the fiber W1f is an optical fiber for communicating (transmitting) with an optical signal.

  Each of the body LAN cable W2, the control LAN cable W3, and the multimedia LAN cable W4 is necessary to transmit a signal equivalent to a signal defined by a general LAN (local area network) standard. It consists of multiple electric wires.

<Configuration of electrical component module M1>
In the example shown in FIG. 2, the meter unit 51, the center display 52, the head-up display 53, the external device interface 54, the solar radiation sensor 55, the speakers SP1, SP2, SP3, and the operation as the electrical components inside the electrical component module M1. A switch SW1 is included. These electrical components are connected to the multi-driver gateway unit 30 via sub cables. For each sub-cable, the number and type of wires can be changed as appropriate according to the specifications of each electrical component.

  The meter unit 51 is similar to a general meter unit, such as a speedometer, a tachometer, an integrated odometer, a section odometer, a fuel meter, a warning display unit that displays the occurrence of an abnormality in each part of the vehicle, An information display unit capable of displaying information useful for driving, messages, images, and the like is provided.

  The center display 52 is constituted by a liquid crystal display panel or the like, and has a display screen capable of displaying various information such as characters, figures, images, and the like. The head-up display 53 can project a display image of various information such as characters, graphics, and images on the vicinity of the front windshield (window glass) and display it as a virtual image.

  The external device interface 54 is an interface for connecting various external devices prepared by the user to the electrical component module M1, and is a standard such as USB (Universal Serial Bus) or HDMI (High-Definition Multimedia Interface). A connector for connection that conforms to

  The operation switch SW1 is a switch that can be operated by the driver. For example, the operation switch SW1 can be used to switch between the integrated travel distance and the section travel distance displayed by the meter unit 51 and to reset the numerical value of the section travel distance. The solar radiation sensor 55 can detect the received light intensity of solar radiation on the surface of the instrument panel. The speakers SP1, SP2, and SP3 can convert an electrical signal such as a voice signal or synthesized voice into sound and output the sound.

<Connection form of electrical system>
In the electrical system shown in FIG. 1, a plurality of electrical component modules M1, M21, M22, M23 and the like are connected to the downstream side of the connection box J1 by the wire harness WH.

  Since the electrical component module M1 includes the meter unit 51, the center display 52, the head-up display 53, and the speakers SP1 to SP3 as described above, it can reproduce multimedia information such as still images, moving images, and sounds. it can. The electrical component module M1 incorporating the electrical component (multimedia device) for reproducing such multimedia information is connected to the connection box J1 via the multi-driver gateway unit 30 as shown in FIG.

  On the other hand, the electrical component module M21 is a steering sub-module including electrical components such as various switches and sensors arranged on the steering column of the vehicle. The electrical component module M22 is an I / P lower submodule including electrical components such as various switches, sensors, and loads arranged at the lower part of the instrument panel. The electrical component module M23 is a console submodule including electrical components such as various switches, sensors, and loads arranged in the vicinity of the console of the vehicle. Since these electrical component modules M21, M22, and M23 do not incorporate electrical components for reproducing multimedia information, each is connected to the connection box J1 via the control connector unit 10.

  Further, as shown in FIG. 1, a distribution control unit J1a and a communication control unit J1b are provided inside the connection box J1. The power distribution control unit J1a distributes the power supplied from the main power of the vehicle via the trunk cable W1 and supplies the power to each electrical component module connected under the power. The communication control unit J1b communicates according to a predetermined communication protocol for each of the four types of communication networks connected to the backbone cable W1, the body LAN cable W2, the control LAN cable W3, and the multimedia LAN cable W4. It performs the function of a gateway for performing control and enabling mutual communication between a plurality of networks.

  The communication protocol used by the communication control unit J1b is determined according to the type of network and the type of information to be transmitted. For example, when signals such as switches and sensors are multiplexed and communicated, a general communication protocol such as CAN (Controller Area Network), FlexRay, Ethernet (registered trademark) is selected as necessary. Also, when transmitting digital video or audio signals, optical communication is used, and a general communication protocol such as MOST (Media Oriented Systems Transport), IDB1394, Ethernet (registered trademark) is selected as necessary. . Also, when transmitting analog video or audio signals that need to reduce transmission delays associated with digitization, select a general communication protocol such as AVC-LAN or AVC-LAN plus as necessary. To do.

<Configuration of Control Connector Unit 10>
FIG. 4 shows a basic configuration of the module M01 that does not include a multimedia device. For example, a module that does not include a multimedia device, such as any one of the electrical component modules M21, M22, and M23 illustrated in FIG. 1, is basically configured as illustrated in FIG.

  As shown in FIG. 4, the module M01 is connected to the wire harness WH via the control connector unit 10, and the connection boxes J1 to J4 are connected to the upstream side of the wire harness WH. The module M01 includes electrical components such as a lamp 21, a motor 22, a sensor 23, and a switch 24 as shown in FIG.

  The control connector unit 10 included in the module M01 includes a load control unit 11, a communication control unit 12, a signal input unit 13, and an abnormality detection unit 14, as shown in FIG. The load control unit 11 performs energization control such as on / off of output devices such as the lamp 21 and the motor 22 in accordance with a predetermined control signal. The signal input unit 13 monitors electrical signals output from input devices such as the sensor 23 and the switch 24, and generates various input information indicating the current state. The abnormality detection unit 14 detects abnormalities such as disconnection of output devices such as the lamp 21 and the motor 22 and input devices such as the sensor 23 and the switch 24.

  The communication control unit 12 performs control for communicating with a device outside the module via a communication line included in the wire harness WH. Specifically, the communication control unit 12 converts the input information collected by the signal input unit 13 using the input device such as the sensor 23 and the switch 24 and the information indicating the detection state of the abnormality detection unit 14 into a multiplexed signal. To send to the communication line. Further, the communication control unit 12 gives the content of the control signal received from the communication line to the load control unit 11 to control on / off of output devices such as the lamp 21 and the motor 22. As a communication protocol used by the communication control unit 12, a general communication protocol such as CAN, FlexRay, Ethernet (registered trademark) or the like can be selected as necessary.

<Configuration of multi-driver gateway unit 30>
A basic configuration of the module M02 including the multimedia device is shown in FIG. For example, like an electrical component module M1 shown in FIG. 1, a module including a multimedia device is basically configured as shown in FIG.

  As shown in FIG. 5, the module M02 is connected to a wire harness WH via a multi-driver gateway (GW) unit 30, and connection boxes J1 to J4 are connected to the upstream side of the wire harness WH. The module M02 includes electrical components such as multimedia devices 41 and 42, various loads 43, and various input devices 44 as shown in FIG.

  Each of the multimedia devices 41 and 42 is a device that can output displayable or viewable multimedia information such as a still image, a moving image, and audio information. For example, the display unit provided in each of the meter unit 51, the center display 52, the head-up display 53, etc. in the electrical component module M1 shown in FIG. 2 can display multimedia information as visible information, and can be used as a speaker. SP1 to SP3 can output multimedia information including voice information as sound. That is, the electrical component module M1 includes electrical components corresponding to the plurality of multimedia devices 41 and 42 shown in FIG.

  Various loads 43 shown in FIG. 5 are electrical components equivalent to, for example, the lamp 21 and the motor 22 shown in FIG. Also, the various input devices 44 shown in FIG. 5 are electrical components equivalent to, for example, the sensor 23 and the switch 24 shown in FIG.

  The multi-driver gateway unit 30 included in the electrical component module M02 includes a wireless communication unit 31, a router unit 32, a gateway control unit 33, a message control unit 34, and a control unit 35 equivalent to the control connector unit.

  The wireless communication unit 31 performs wireless communication with a wireless base station placed at various points by a specific mobile communication carrier or the like that the user has previously contracted with, and communicates with the multi-driver gateway unit 30. Secure a wireless communication line.

  The router unit 32 may connect a communication line with a predetermined provider via a wireless communication line secured by the wireless communication unit 31, and may connect to a network such as the Internet via a server of the connected provider. it can.

  The gateway control unit 33 is a server on the Internet to which the router unit 32 is connected, and each communication network on the vehicle connected to the multi-driver gateway unit 30 via the wire harness WH (body LAN, control LAN, multi-router). Enables mutual communication with a media LAN or the like.

  The message control unit 34 collects various information such as the state of each part of the vehicle, the driving state, the road state, etc. from each communication network outside the module, outside the module, and the Internet, and performs the following control.

(1) The various information collected is classified by type, and high priority information that is most likely to be required by the driver in the current driving situation is extracted. The priority of information is comprehensively determined by combining both the priority for each type determined in advance and the priority that changes according to the driving situation.
(2) The extracted high-priority information is first output to the multimedia device in at least one of screen display and audio output according to the priority order.
(3) When a plurality of multimedia devices are connected in the module, a specific multimedia device having a high priority among the plurality of multimedia devices is automatically selected, and the selected multimedia device is selected. In contrast, information with higher priority is output first. The priorities of a plurality of multimedia devices are determined in advance according to the screen resolution, high visibility, and the like.

<Description of characteristic configuration>
Each electrical component module shown in FIGS. 1 and 3 can communicate with each part of the vehicle via the wire harness WH using a signal obtained by multiplexing the input signal and the output signal by the communication control unit 12. Therefore, even when the number of electrical components and modules mounted on the vehicle increases, the number of wires such as electric wires constituting the wire harness WH can be reduced. Thereby, the cross-sectional area of the wire harness WH can be reduced and the weight thereof can be reduced, and the space for arranging the wire harness WH can be easily secured.

  In addition, any one of the control connector unit 10, the multi-driver gateway unit 30, the driver module DM, and the electronic control unit (ECU) is disposed at a place where each electrical component module and the wire harness WH are connected. As shown in FIG. 4, the control connector unit 10 has only basic functions for control and communication of modules including only simple electrical components such as switches, sensors, and loads. Even when the number of modules increases, it is possible to suppress an increase in the cost of the entire system. Further, by connecting the multi-driver gateway unit 30 instead of the control connector unit 10, it is possible to control the electrical component module including the multimedia device.

  For the electrical component module to which the multi-driver gateway unit 30 is connected, the message control unit 34 controls each multimedia device. Therefore, the optimum information is preferentially selected according to the driving conditions of the vehicle, and the multimedia device is selected. Can be provided to the driver.

Here, the features of the above-described embodiment of the electrical system according to the present invention are summarized and listed in the following [1] to [7], respectively.
[1] In-vehicle modules (M1, M21, M22, M23);
A smart connection unit (J1) having a power distribution function (J1a) for supplying power from a main power supply on the vehicle to the plurality of in-vehicle modules, and a communication control function (J1b) for controlling information transmission on the vehicle )When,
A wire harness (WH) for connecting between the smart connection part (J1) and the plurality of in-vehicle modules (M1, M21, M22, M23);
Module-side communication control units (10, 30) arranged at locations where the wire harness (WH) and the in-vehicle module are connected;
An electrical system comprising:
The module side communication control unit (10, 30) includes a control circuit built-in connector unit (10) and a multi-driver gateway unit (30),
The control circuit built-in connector section (10) is a function (11, 13) for controlling the device in the corresponding in-vehicle module, and data is multiplexed by multiplexing signals between the smart connection section and each device in the in-vehicle module. Having a communication control function (12) for communication;
The multi-driver gateway unit (30) has a message control function (34) for controlling a message for a vehicle driver in addition to the function of the control circuit built-in connector unit (10).
An electrical system characterized by that.
[2] The electrical system according to [1],
The message control function (34) of the multi-driver gateway unit (30) collects information from the corresponding in-vehicle module and from the outside of the in-vehicle module, automatically distinguishes the collected information for each type, and according to the type According to the priority order, the information with high priority is output first to the device in the corresponding in-vehicle module.
An electrical system characterized by that.
[3] The electrical system according to [2],
The message control function (34) of the multi-driver gateway unit (30) is connected to an in-vehicle module to which a plurality of multimedia devices (41, 42) including at least one of a display and an audio output unit are applied. In this case, the electrical system is characterized in that high priority information is first output to a specific multimedia device having a high priority among the plurality of multimedia devices.
[4] The electrical system according to [1],
The multi-driver gateway unit (30) includes a wireless communication router function (31, 32) for performing data communication with a communication network outside the vehicle via a wireless line.
[5] The electrical system according to [1],
The wire harness (WH) includes a power cable (W1a), an earth line (W1b), a communication wire (W1c, W1d), and an optical fiber for optical communication (W1e, W1f) bundled to form a backbone cable (W1) The electrical system characterized by including.
[6] The electrical system according to [5],
The wire harness (WH) further includes three independent communication cables (W2, W3, W4) respectively assigned to a vehicle body system, a control system, and a multimedia system.
[7] The electrical system according to [1],
The plurality of smart connection portions are arranged at different locations on the vehicle, and at least a power line, a ground line, a communication wire, and an optical fiber for optical communication are provided between the plurality of smart connection portions (J1 to J4). Are connected via a wire harness (WH) including a backbone cable (W1) configured by bundling the cables.

DESCRIPTION OF SYMBOLS 10 Control connector part 11 Load control part 12 Communication control part 13 Signal input part 14 Abnormality detection part 21 Lamp 22 Motor 23 Sensor 24 Switch 30 Multidriver gateway part 31 Wireless communication part 32 Router part 33 Gateway control part 34 Message control part 41, 42 Multimedia equipment 43 Various loads 44 Various input equipment 51 Meter unit 52 Center display 53 Head-up display 54 External equipment interface 55 Solar sensor 60 Audio amplifier ANT Antenna section WH Wire harness W1 Core cable W2 Body LAN cable W3 Control system LAN cable W4 Multimedia LAN cable M01, M02 Electrical component module M1-M17 Electrical component module M21, M22, M23 Electrical component Module SP1, SP2, SP3 speaker SW1 operation switch J1, J2, J3, J4 connection box

Claims (4)

An in-vehicle module;
A smart connection unit having a power distribution function for supplying power to a plurality of the in-vehicle modules from a main power supply on the vehicle, and a communication control function for controlling information transmission on the vehicle;
A wire harness connecting between the smart connection part and the plurality of in-vehicle modules;
A module-side communication control unit disposed at each location where the wire harness and the in-vehicle module are connected;
An electrical system comprising:
The module side communication control unit comprises a control circuit built-in connector unit and a multi-driver gateway unit,
The control circuit built-in connector unit has a function of controlling a device in the corresponding in-vehicle module, and a communication control function of multiplexing signals and data communication between the smart connection unit and each device in the in-vehicle module. ,
The multi-driver gateway unit has a message control function for controlling a message for a vehicle driver in addition to the function of the control circuit built-in connector unit.
An electrical system characterized by that. The electrical system according to claim 1,
The message control function of the multi-driver gateway unit collects information from the corresponding in-vehicle module and outside the in-vehicle module, automatically distinguishes the collected information for each type, and prioritizes according to the priority order according to the type. High-level information is output first to the device in the corresponding in-vehicle module.
An electrical system characterized by that. The electrical system according to claim 2,
The message control function of the multi-driver gateway unit is configured such that when a plurality of multimedia devices including at least one of a display and an audio output unit are connected to a corresponding in-vehicle module, the plurality of multimedia devices A high-priority information is output first to a specific multimedia device having a high priority. The electrical system according to claim 1,
The multi-driver gateway unit includes a wireless communication router function for performing data communication with a communication network outside the vehicle via a wireless line.

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