JP5648612B2 - In-vehicle device control system - Google Patents

Description

  In the present invention, a plurality of in-vehicle devices mounted on a vehicle and a control device that outputs an operation instruction signal for operating the plurality of in-vehicle devices are connected via an in-vehicle local area network (in-vehicle LAN). The present invention relates to an in-vehicle device control system.

  For example, Patent Document 1 discloses a multiplex communication system that multiplexes transmission and reception of information between a switch display terminal in which an input switch and an information display unit are integrated and an external device. In this multiplex communication system, the external device includes various loads (lamps, etc.) and actuators (motors, solenoids, relays, etc.), as well as sensors and switches that detect abnormal conditions. In such a configuration, when the switch display terminal detects a switch input for instructing the operation of the external device, the instruction signal is transmitted to the external device by multiplex communication. On the other hand, when an abnormal state is detected by the sensor and the switch in the external device, the detection signal is transmitted to the switch display terminal, and a screen is displayed when the abnormal state occurs at the switch display terminal. As described above, in the multiplex communication system disclosed in Patent Document 1, multiplex communication is performed between the switch display terminal and the external device, thereby reducing the number of wire harnesses and saving space.

  It is also known that a control device controls actuators, switches, sensors, and the like mounted on a vehicle using a multiplex communication network technology such as LIN. In this case, the control device, the actuator, the switch, the sensor, and the like are individually connected to the multiplex communication network and given a unique ID number. Then, the control device uses this ID number to specify a communication target for transmitting / receiving information, thereby giving a drive instruction to a desired actuator, or obtaining a detection signal from a desired switch, sensor, or the like. Or

JP-A-62-2658

  Here, some in-vehicle devices need to operate a plurality of in-vehicle devices at the same time. For example, turn signal lamps are usually provided in the front part, the side part, and the rear part on the right and left sides of the vehicle body, respectively. When blinking the blinker lamp for turning left or right or changing the course, it is necessary to blink the right or left front blinker lamp, side blinker lamp, and rear blinker at regular intervals while synchronizing. Furthermore, when the hazard switch is operated, it is necessary to blink all the blinker lamps in synchronization.

  However, in the configuration in which each of the in-vehicle devices including the turn signal lamp and the turn-on / off circuit for turning on / off the turn signal lamp is individually connected to the multiplex communication network, for example, when the hazard switch is operated, the turn signal lamp A turn-on instruction and a turn-off instruction are sequentially given to all the in-vehicle devices including. Then, the turn-on timing and turn-off timing of each turn signal lamp are shifted, and the user may feel uncomfortable. In particular, when turning on or off a plurality of turn signal lamps in turn, it is necessary to drive other in-vehicle devices, and in the middle of outputting a turn-on or turn-off instruction for a plurality of turn signal lamps, In the case where output is required, the deviation of the lighting timing and the lighting timing is increased.

  The present invention has been made in view of the above-described points, and even when a configuration in which a plurality of in-vehicle devices are individually connected to an in-vehicle network is employed, a desired plurality of in-vehicle devices are synchronized. An object is to provide an in-vehicle device control system that can be operated.

In order to achieve the above-described object, an in-vehicle device control system according to claim 1 includes a plurality of in-vehicle devices mounted on a vehicle and a control device that outputs an operation instruction signal for operating the plurality of in-vehicle devices. Is connected to be communicable via the in-car local area network,
The operation instruction signal is composed of a control command signal for instructing each of the plurality of in-vehicle devices to be operated, and a timing command signal for instructing a timing for starting the operation in an aspect instructed by the control command signal.
Each of the plurality of in-vehicle devices is individually connected to the in-vehicle local area network, a unique ID code is determined in advance for each of the plurality of in-vehicle devices, and a control device is determined for each of the plurality of in-vehicle devices. The ID code is used to output a control command signal to a desired in-vehicle device, and the in-vehicle device that has received the control command signal enters an operation start standby state.
When the control device completes the output of the control command signal to one or more desired in-vehicle devices, it then outputs a timing command signal,
The timing command signal is sent to all of the plurality of in-vehicle devices using an identification code that designates the plurality of in-vehicle devices as a destination, and is in an operation start standby state among the plurality of in-vehicle devices. The in-vehicle device that has been received by the in-vehicle device and has received the timing command signal starts to operate in a manner instructed by the control command signal ,
In a plurality of in-vehicle devices, two types of ID codes are defined for the same in-vehicle device, and when one ID code is used, the in-vehicle device that has received the control command signal is in an operation start standby state, When the other ID code is used, the in-vehicle device that has received the control command signal immediately starts operating in a mode indicated by the control command signal .

Thus, in the in-vehicle device control system according to claim 1, the operation instruction signal for operating each in-vehicle device indicates the mode in which each in-vehicle device should be operated, and the in-vehicle device is operated. The control command signal to be in the start standby state and the timing command signal to instruct the timing to start the operation in the instructed manner for the in-vehicle device in the operation start standby state. For this reason, when a control command signal is transmitted in order using an ID code to a desired in-vehicle device that is desired to operate in synchronization, each in-vehicle device does not start operation but simply starts operation. It just becomes a standby state. Then, after completing the transmission of the control command signal to the in-vehicle device that is desired to operate in synchronization, the control device transmits the timing command signal. This timing command signal is transmitted using an identification code that designates all of the plurality of in-vehicle devices as transmission destinations, and is received by the in-vehicle device in the operation start standby state among the plurality of in-vehicle devices. Therefore, the vehicle-mounted device that is in the operation start standby state by the transmitted control command signal before transmitting the timing command signal starts operation almost simultaneously in response to the reception of the timing command signal. It becomes possible to operate synchronously.
Further, among a plurality of in-vehicle devices, there are some in-vehicle devices that need to be operated in synchronization with other in-vehicle devices or that need to be operated independently. By setting two types of ID codes as described above for such an in-vehicle device, it is only necessary to transmit a control command signal when it is necessary to operate it alone.

  As described in claim 2, when a control command signal is received, an in-vehicle device that immediately starts operation may be connected to the in-vehicle local area network in a mode instructed by the control command signal. Some in-vehicle devices do not need to operate in synchronism with other in-vehicle devices, and some operate exclusively. This is because such an in-vehicle device may start operating immediately after receiving a control command signal without waiting for reception of a timing command signal.

It is a block diagram which shows an example of a structure of the vehicle equipment control system by embodiment. It is a figure which shows the group ID code defined in order to specify the separate ID code defined with respect to each vehicle equipment, and several vehicle equipment collectively. It is a block diagram which shows the structure of the blinker apparatus as vehicle equipment. It is a flowchart which shows an example of the control processing of the microcomputer of vehicle equipment. It is a time chart which shows the operating state of each vehicle equipment when blinking the right turn signal lamp.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a configuration diagram showing an example of the configuration of the in-vehicle device control system according to the present embodiment.

  As shown in FIG. 1, in the in-vehicle device control system of the present embodiment, a plurality of winker devices including a winker lamp and a turn-on / off circuit for turning on / off the winker lamp are provided as the on-vehicle device. That is, the left front turn signal device 11 that turns on and off the turn signal installed at the left front portion of the vehicle, the right front turn signal device 12 that turns on and off the turn signal installed at the right front portion, and the right that turns on and off the turn signal installed on the right side surface. Side turn signal device 13, right rear turn signal device 15 for turning on / off the turn signal installed at the right rear, left rear turn signal device 16 for turning on / off the turn signal installed at the rear left side, and turning on / off the turn signal installed on the left side A left side blinker device 17 is provided.

  Furthermore, in the in-vehicle device control system according to the present embodiment, left and right door mirror devices 14 and 18 including a door mirror and a drive device for deploying and storing the door mirror are provided as the in-vehicle device.

  Each of these turn signal devices 11 to 13 and 15 to 17 and the door mirror devices 14 and 18 are individually connected to a multiplex communication network 19 such as a LIN (Local Interconnect Network).

  The master controller 10 outputs an operation instruction signal to a corresponding in-vehicle device via the multiplex communication network 19 in response to an operation of a switch or the like by a vehicle user. For example, when the winker switch is operated so that the right turn signal blinks by the user, the master controller controls the right front turn signal device 12, the right side turn signal device 13, and the right rear turn signal device 15 based on a signal from the turn signal switch. In response to this, an operation instruction signal is output so as to blink. Further, when the hazard switch is operated, an operation instruction signal is output to all the winker devices 11 to 13 and 15 to 17 so that all the winkers blink. Further, when a switch operation for instructing to store one or both of the left and right drag mirrors is performed, an operation instruction signal is sent to the corresponding door mirror devices 14 and 18 so as to store the instructed door mirror. Is output.

  In this way, the winker devices 11 to 13, 15 to 17 as the in-vehicle devices, and the master controller 10 can specify the desired in-vehicle devices and issue an operation instruction to the specified in-vehicle devices. As shown in FIG. 2, each door mirror device 14, 18 has a unique ID code.

  However, in the configuration in which each of the plurality of in-vehicle devices is individually connected to the multiplex communication network 19 as in the present embodiment, when the master controller 10 individually instructs the in-vehicle device to operate, If each in-vehicle device starts operation immediately in response to the operation instruction, for example, it is necessary to operate a plurality of in-vehicle devices such as turn signal devices in synchronization, but such synchronous operation It becomes difficult to make it.

  Therefore, in the in-vehicle device control system according to the present embodiment, the operation instruction signal for operating each in-vehicle device is instructed by the control command signal instructing the mode in which each in-vehicle device should be operated and the control command signal. The operation start instruction signal (timing command signal) for instructing the timing for starting the operation is divided. For this reason, even if a control command signal is sequentially transmitted using a respective ID code to a plurality of in-vehicle devices that are desired to operate in synchronization, at that time, each in-vehicle device starts operating. There is nothing to do.

  Then, after completing the transmission of the control command signal to a plurality of in-vehicle devices that are desired to operate in synchronization, the master controller 10 transmits an operation start instruction signal. This operation start instruction signal is transmitted using a special ID code (identification code) that designates all of the plurality of in-vehicle devices as transmission destinations. Therefore, the vehicle-mounted device whose operation mode is instructed by the transmitted control command signal before transmitting the operation start instruction signal starts to operate almost simultaneously in response to reception of the operation start instruction signal. Thus, in the in-vehicle device control system of the present embodiment, it becomes possible to operate a desired plurality of in-vehicle devices in synchronization.

  In addition, when it is not necessary to operate a plurality of in-vehicle devices in synchronization, it is possible that only the control command signal is transmitted to one in-vehicle device, and then the operation start instruction signal is transmitted.

  In addition, the control command signal output from the master controller 10 includes an ID code for specifying a target in-vehicle device and a control command for instructing in what manner the operation should be performed. The operation start instruction signal output from the master controller 10 includes a special ID code for designating all in-vehicle devices, not a specific in-vehicle device, and a command for instructing operation start.

  Next, the structure of the blinker apparatuses 11-13 and 15-17 is demonstrated. In addition, each blinker apparatus 11-13, 15-17 has the same structure. Therefore, the configuration of the winker device 11 will be described with reference to FIG. 3 as an example.

  As shown in FIG. 3, the winker device 11 includes a lamp driver circuit 21 that switches on / off states of the winker lamp 20 by supplying a driving current to the winker lamp 20 or stopping the supply of the driving current. The lamp driver circuit 21 supplies a driving current to the blinker lamp 20 or stops the supply in accordance with a lighting instruction or a lighting instruction from the microcomputer 22.

  The communication I / F circuit 24 receives a control command signal and an operation start instruction signal from the master controller 10 via the in-vehicle LAN 19 and returns a reception notification to the master controller 10 in response to receiving the control command signal. (Acknowledgment response). The reception notification is returned by the communication I / F circuit 24 based on an instruction from the microcomputer 22.

  The power supply circuit 25 transforms a power supply voltage supplied from the outside to a power supply voltage for the microcomputer 22 and the communication I / F circuit 24 and outputs the power supply voltage.

  The microcomputer 22 executes various processes in accordance with a control program stored in the memory 23 and controls the operation of the entire winker device 11. FIG. 4 is a flowchart showing an example of control processing of the microcomputer 22 in the winker device 11 as the in-vehicle device. Hereinafter, an example of processing executed in the microcomputer 22 will be described based on this flowchart.

  First, in step S100, as an initialization process, the winker device 11 is set in a command waiting state. This command waiting state refers to a state waiting for reception of a control command signal transmitted from the master controller 10, and even when an operation start instruction signal is transmitted from the master controller 10 in this command waiting state. The in-vehicle device does not start any operation.

  In a succeeding step S110, it is determined whether or not the communication I / F circuit 24 has received a signal. In this determination process, when it is determined that no signal is received, the process of step S110 is executed again, and the communication I / F circuit 24 waits until it receives the signal. On the other hand, if the communication I / F circuit 24 determines that a signal has been received, the process proceeds to step S120.

  In step S120, based on the ID code included in the signal received by the communication I / F circuit 24, the received signal is a control command signal directed to itself, an operation start instruction signal, or other signal (other signal). The control command signal directed to the in-vehicle device or the reception notification from the in-vehicle device) is determined. If it is determined that the control command signal is directed to itself, the process proceeds to step S130. If it is determined that the control command signal is an operation start instruction signal, the process proceeds to step S160. When it determines, it returns to the process of step S110.

  In order to execute the above-described determination process, the memory 23 stores an ID code assigned to itself and a special ID code indicating an operation start instruction signal. Then, the microcomputer 22 determines the attribute of the received signal by comparing the ID code of the received signal with the ID code stored in the memory 23.

  In step S <b> 130, a control command for instructing an operation mode, for example, in the case of the winker device 11, included in the received signal is stored in the memory 23. In the subsequent step S140, the winker device 11 that is the in-vehicle device is changed from the command waiting state to the operation instruction waiting state. When the in-vehicle device is in the operation instruction waiting state, in response to the reception of the operation start instruction signal from the master controller 10, the in-vehicle apparatus starts the operation in a mode instructed by the received control command signal. In step S150, the control command signal reception notification is transmitted to the master controller 10, and then the process returns to step S110.

  On the other hand, in step S160 executed when an operation start instruction signal is received from the master controller 10, it is determined whether or not the in-vehicle device is in an operation instruction waiting state. At this time, if it is determined that it is not in the operation instruction waiting state, the process returns to step S110 without performing any process for operating the in-vehicle device. On the other hand, if it is determined that the operation instruction is in the waiting state, the process proceeds to step S170, and the operation of the in-vehicle device is started in a manner instructed by the control command stored in the memory 23.

  The door mirror devices 14 and 18 are also configured in accordance with the winker device 11 described above. That is, in the case of the door mirror devices 14 and 18, the load is not the turn signal lamp 20 but only a motor for changing the angle of the door mirror, and other microcomputers, memories, communication I / F circuits, and the like are similarly configured. .

  Next, a specific control example of how each in-vehicle device is controlled in the in-vehicle device control system according to the present embodiment will be described.

  FIG. 5 shows that when the vehicle is stopped with the right door mirror retracted, the driver of the vehicle performs a switch operation to instruct the deployment of the right door mirror and starts the vehicle toward the right. 4 is a time chart showing the operating state of each in-vehicle device when the right door mirror is expanded and the right blinker lamp is blinked because the winker switch is operated for this purpose.

  In this case, the master controller 10 sequentially gives control command signals for instructing turn-on of the turn signal to the turn signal device on the right side of the vehicle (the right front turn signal device 12, the right side turn signal device 13, and the right rear turn signal device 15). Send. Furthermore, the master controller 10 transmits a control command signal that instructs the right door mirror device 14 to deploy the door mirror. Each of the winker devices 12, 13, 15 and the right door mirror device 14 changes from the command waiting state to the operation instruction waiting state at the timing when the control command signal is received.

  And master controller 10 will transmit an operation start directions signal after completing transmission of a control command signal to all the in-vehicle devices which should be operated synchronously. As described above, this operation start instruction signal is received by the in-vehicle device in the operation instruction waiting state. Each vehicle-mounted device that has received the operation start instruction signal starts operation in a manner instructed by the already received control command signal. Therefore, in the example shown in FIG. 5, the winker device on the right side of the vehicle (the right front winker device 12, the right side winker device 13, and the right rear winker device 15) is almost synchronized with the reception of the operation start instruction signal. Each turn signal is turned on, and the right door mirror device 14 unfolds the right door mirror.

  Then, the master controller 10 sends a control command signal so that the blinker lamp group on the right side of the vehicle is repeatedly turned on and off until the vehicle turns straight from the right turn state and the turn signal switch is canceled. An operation start signal is transmitted at a substantially constant cycle while transmitting the turn signal devices 12, 13, and 15 in order.

  The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention. .

  For example, in the above-described embodiment, the example in which the winker devices 11 to 13 and 15 to 17 and the door mirror devices 14 and 18 are connected to the network 19 has been described. The blinker device needs to blink in synchronization with multiple blinker lamps when the blinker switch or hazard switch is operated, and the door mirror device also stores the left and right door mirrors synchronously, for example when parking This is because there is a case where it is likely to expand or expand.

  However, the in-vehicle devices connected to the network 19 are not limited to these devices. In other words, the in-vehicle device is composed of a plurality of devices such as a headlight device, a taillight device, a fog light device, a door lock device, and a power window device, and those devices need to be operated in synchronization. Thus, the present invention can be applied. Furthermore, it is not necessarily limited to the same type of in-vehicle device. For example, a motor that drives a washer pump that injects the washer liquid onto the windshield and a wiper motor that drives the wiper may be operated in synchronism with each other. . In this way, when the driver performs a switch operation for injecting the washer liquid onto the windshield, the wiper can be operated in synchronization.

  In addition, when receiving a control command signal, the network 19 may be connected to an in-vehicle device that starts operation immediately in a manner instructed by the control command signal. Some in-vehicle devices do not need to operate in synchronism with other in-vehicle devices, and some operate exclusively. This is because such an in-vehicle device may start operating immediately after receiving a control command signal without waiting for reception of a timing command signal. In this way, it is possible to connect the network of the in-vehicle device control system according to the present invention to an existing network.

  Further, in a plurality of in-vehicle devices, two types of ID codes are defined for the same in-vehicle device, and when one ID code is used, the in-vehicle device that has received the control command signal is in an operation start standby state. When the other ID code is used, the in-vehicle device that has received the control command signal may be configured to immediately start operating in a manner instructed by the control command signal. Among a plurality of in-vehicle devices, there are some in-vehicle devices that need to be operated in synchronization with other in-vehicle devices or that need to be operated independently. By setting two types of ID codes as described above for such an in-vehicle device, it is only necessary to transmit a control command signal when it is necessary to operate it alone. As a result, it is possible to reduce the processing load on the master controller and the communication volume on the network 19.

  Alternatively, the control command signal may include an operation state instruction command for instructing whether the in-vehicle device that has received the control command signal enters an operation start standby state or starts operation immediately. is there. Even if it does in this way, when it becomes necessary to operate an in-vehicle apparatus independently, it can be completed only by transmission of a control command signal. Further, in this case, since it is not necessary to define two types of ID codes, the number of devices that can be connected to the network 19 can be increased.

10 master controllers 11-13, 15-17 turn signal device 14, 18 door mirror device

Claims (2)

In an in-vehicle device control system in which a plurality of in-vehicle devices mounted on a vehicle and a control device that outputs an operation instruction signal for operating the plurality of in-vehicle devices are communicably connected via an in-vehicle local area network ,
The operation instruction signal includes a control command signal for instructing each of the plurality of in-vehicle devices to be operated, and a timing command signal for instructing a timing for starting the operation in an aspect instructed by the control command signal. ,
The plurality of in-vehicle devices are individually connected to the in-vehicle local area network, a unique ID code is predetermined for each of the plurality of in-vehicle devices, and the control device includes the plurality of in-vehicle devices. Using the ID code determined for each, the control command signal is output to a desired in-vehicle device, and the in-vehicle device that has received the control command signal enters an operation start standby state,
The control device outputs the timing command signal after completing the output of the control command signal to one or more desired in-vehicle devices,
The timing command signal is transmitted to all of the plurality of in-vehicle devices by using an identification code that designates the plurality of in-vehicle devices as a transmission destination. The in-vehicle device that is received by the in-vehicle device that is in the start standby state and receives the timing command signal starts operation in a mode instructed by the control command signal ,
In the plurality of in-vehicle devices, two types of ID codes are defined for the same in-vehicle device, and when one ID code is used, the in-vehicle device that has received the control command signal is in the operation start standby state. However, when the other ID code is used, the in-vehicle device that has received the control command signal immediately starts operating in a mode indicated by the control command signal. .   The in-vehicle local area network is also connected to an in-vehicle device that immediately starts operation in a mode instructed by the control command signal when the control command signal is received. In-vehicle device control system.

Images