FR2920721A1 - METHOD FOR CONTROLLING POWER GENERATION SYSTEM FOR VEHICLE - Google Patents

Abstract

A method of controlling a vehicle power generation system having a plurality of vehicle power generation devices in a single vehicle, wherein power generation control commands are provided to the plurality of generation devices. vehicle power from a high level device and status reports are made for the high level controller via a communication interface, a device identification adjustment terminal being made available to each vehicle power generation device for enabling high level device communications to a particular vehicle power generation device, and the particular vehicle power generation device being identified on the basis of a potential level of level of the setting terminal.

Description

METHOD FOR CONTROLLING POWER GENERATION SYSTEM FOR VEHICLE CONTEXT OF THE INVENTION

FIELD OF THE INVENTION The present invention relates to a method of controlling a vehicle power generation system for controlling a plurality of vehicle power generation devices mounted in a single vehicle.

DESCRIPTION OF THE RELATED ART For vehicle power generation devices, the voltage of the power supply line in a vehicle has simply been controlled to remain a constant value. However, in order to improve the fuel efficiency and increase the comfort of the occupants, the operations of the vehicle power generation devices (for example, the setting of the power generation voltage value) are actively controlled by a device. high level control (for example, the engine control device) in recent years. A method using digital communications is now becoming routine as one of the methods of controlling the vehicle power generation devices by the high level device.

The use of digital communications allows the high level controller to acquire various operating states of the respective devices connected to the communication line, thereby achieving a more sophisticated vehicle control.

For example, according to JP-A-2002-325085, a plurality of vehicle accessories are connected to the communication line, and vehicle power generation devices are connected to the communication line as one of these accessories.

In a case where the vehicle power generation devices are controlled by a plurality of accessories connected to the communication line, the high level device specifies the communication identifiers within a communication frame and transmits the control information. the vehicle power generation devices for exchanging information, which enables the high level device to control the operations of the vehicle power generation devices and to acquire status reports of the power generation devices for vehicle.

A communication identifier assigned to each vehicle accessory in the present circumstances is sufficient in a case where a vehicle power generation device is mounted in a single vehicle such as an automobile. However, in the case of a heavy vehicle (for example, a truck or a bus) that consumes a large amount of power, a plurality of power generating devices each having a communication capability are attached to a single vehicle. In this case, even when all the vehicle power generation devices are controlled according to the same settings, it is necessary to assign a different communication identifier to each vehicle power generation device. In addition, to enable normal communication control to be accomplished, each of the plurality of power generation devices for

vehicle must respond to a different communication identifier. SUMMARY OF THE INVENTION

The invention has been developed to solve the problems discussed above and is intended to provide a method of a vehicle power generation system to enable the high level controller to efficiently control devices. power generation devices for vehicles via communications in a vehicle power generation system equipped with a plurality of vehicle power generation devices such as a heavy vehicle.

A first aspect of the invention is a method of controlling a vehicle power generation system having a plurality of vehicle power generation devices in a single vehicle, wherein the power generation control commands are issued to the a plurality of vehicle power generation devices from a high level device and status reports are made from the plurality of vehicle power generation devices to the high level controller via a communication interface . In this control method, a device identification adjustment terminal is provided to each vehicle power generation device to enable communications from the high level controller to a particular vehicle power generation device, and the particular power generation device for vehicle is identified on the basis of a potential level at the control terminal.

A second aspect of the invention is a method of controlling a vehicle power generation system equipped with a plurality of vehicle power generation devices in a single vehicle, wherein power generation control commands are issued to a plurality of vehicle power generation devices from a high level device and status reports are made from a plurality of vehicle power generation devices to the high level device through a communication interface. In this control method, a plurality of communication terminals are provided to each vehicle power generation device, and a particular vehicle power generation device is identified from the plurality of vehicle power generation devices based on the terminal, among the plurality of communication terminals, from which a communication signal is inputted.

A third aspect of the invention is a method of controlling a vehicle power generation system having a plurality of vehicle power generation devices in a single vehicle, wherein power generation control commands are issued to a plurality of vehicle power generation devices from a high level device and status reports are made from a plurality of vehicle power generation devices to the high level controller via a communication interface . In this control method, one of the plurality of vehicle power generation devices is directly connected to a communication line of the system connected to the high level controller to serve as a master power generation device in vehicle communication. , and any of the other vehicle power generation devices is connected not directly to the communication line of the system connected to the high level device but to a line of

local communication connected to the communication line of the system by means of the master power generation device in vehicle communication to serve as a slave power generation device in vehicle communication.

According to the first aspect of the invention, providing the setting terminal for the device identification to enable communications of the high level device to a particular vehicle power generation device to identify the device for generating the device. particular vehicle power on the basis of a potential level at the control terminal, the respective power generation devices for vehicle become capable of responding to

respectively different communication identifiers, which allows the high level device to effectively control a plurality of vehicle power generation devices.

Likewise, according to the second aspect of the invention, by making several communication terminals available to each vehicle power generation device, it is possible to change a communication identifier to which a corresponding power generating device for a vehicle responds. among power generating devices of a certain type on the basis of the terminal, among the plural communication terminals, from which a communication signal is inputted. It is thus possible to control several power generation devices efficiently.

In addition, according to the third aspect of the invention, by setting one of a plurality of vehicle power generation devices as a master power generation device in vehicle communication which is directly connected to the communication line connected to the communication device. high, and connecting any of the other vehicle power generation devices not directly to the communication line of the system connected to the high level controller but to the local communication line connected to the communication line of the system. by means of the master power generation device in vehicle communication to serve as a slave power generation device in vehicle communication, the high level controller becomes capable of controlling all of the vehicle power generation devices effectively without a born to leave a new communication identifier.

The foregoing and other objects, features, aspects, and advantages of the present invention will become apparent from the following detailed description of the present invention taken in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a configuration view used to describe a method of controlling a vehicle power generation system according to a first embodiment of the invention;

Fig. 2 is a circuit diagram used to describe a device identification distinguishing method of the first embodiment; Fig. 3 is a view used to describe an example of a device identification distinction level of Fig. 2;

Fig. 4 is a configuration used for describing a method of controlling a vehicle power generation system according to a second embodiment of the invention;

Fig. 5 is a configuration view used to describe a method of controlling a vehicle power generation system according to a third embodiment of the invention;

Fig. 6 is a configuration view used to describe a method of controlling a vehicle power generation system according to a fourth embodiment of the invention;

Fig. 7 is a view used to describe the operations of a master communication power generating device for a vehicle that has received an order message from a high level device in a control method of a control system. vehicle power generation according to a fifth embodiment of the invention;

Fig. 8 is a view used to describe the operations of a communication slave power generating device which has received an order message from a master device in vehicle communication in the control system of a control system. vehicle power generation of the fifth embodiment;

Fig. 9 is a view used to describe the operations of a vehicle communication master power generation device that has received a response message from the high level device in the control method of a power generation system. for vehicle of the fifth embodiment;

Fig. 10 is a view used to describe the operations of the slave power generation device in vehicle communication that has received a response message from the master device in vehicle communication in the control method of a power generation system. for vehicle of the fifth embodiment;

Fig. 11 is a view used to describe the operations of the master power generation device in vehicle communication in a control method of a vehicle power generation system according to a sixth embodiment of the invention; and

Fig. 12 is a view used to describe the operations of a slave power generation device in vehicle communication in the control method of a vehicle power generation system of the sixth embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First Embodiment

Hereinafter, an embodiment of the invention will be described.

Fig. 1 is a configuration view used to describe a method of controlling a vehicle power generation system according to a first embodiment of the invention. Several, for example, three, 300a, 300b, and 300c power generation devices for vehicles, and other accessories, for example, a vehicle starter device 400 and a vehicle air conditioner 500, are controlled by a high level device 200 by means of a communication line 100 of the system.

In a case where the high level device 200 controls the respective power generating devices 300a, 300b, and 300c for vehicle via communications, the communications are made by means of a communication message frame attached to a communication identifier that differs from one vehicle power generation device to another. In the power generation devices 300a, 300b and 300c for the vehicle, the communication identifiers intended to respond are set on the basis of the potential levels V1, V2, and V3 entered in the setting terminals (Set terminals).

The set terminal is a setting terminal through which the communication interface portion receives an input. It should be noted that the adjustment terminal of the vehicle power generation device is not limited to one.

Fig. 2 and Fig. 3 are views used respectively to describe the circuit diagram of the setting terminal portion and an example of the device identification distinction level of each of the power generation devices 300a, 300b and 300c. for vehicle, and the voltage Vin at the set terminal indicates that the device numbers are switched.

Referring to Fig. 2, a potential level, which is, for example, a power source VB divided by respective resistors R1, R2, and R3 in a resistive voltage-dividing circuit 320, is inputted into the set terminal of the communication interface portion 310, and the voltage dividing resistive circuit 320 is connected to a connector 340 at the end of the vehicle via a connector 330 at the end of the generating device power for a vehicle.

The connector 330 at the end of the vehicle power generation device has a communication terminal 330a of the vehicle power generation device and an adjustment terminal 330b of the vehicle power generation device. The connector 340 at the end of the vehicle is provided with a communication terminal 340a at the end of the vehicle to be connected to the communication terminal 330a of the vehicle power generation device and an adjustment terminal 340b at the vehicle end. from the end of the vehicle to be connected to the control terminal 330b of the vehicle power generation device.

For example, in the case of FIG. 2, since S2 and S3 of the vehicle power generating device setting terminal 330b are connected by connecting the connector 340 at the vehicle end to the connector 330 at the level of the vehicle. from the end of the vehicle power generation device, the voltage at the set terminal is found to be: (Formula 1) Vin = R3 VB R1 + R3 and "3" is set as device identification.

In addition to the above, the device numbers can be set as set forth in FIG. 3 by a combination describing which resistors among the resistors S1, S2, and S3 are to be connected or disconnected.

As described, according to the first embodiment, in a control method of a vehicle power generation system equipped with a plurality of vehicle power generation devices in a single vehicle, wherein control commands generation devices are provided to the plurality of vehicle power generation devices from a high level device and status reports are made from the plurality of vehicle power generation devices to the high level device by

the communication interface intermediate, a device identification adjustment terminal is provided for each vehicle power generation device to enable communication of the high level controller to a device for generating the device. particular power for a vehicle, and the particular power generating device for a vehicle is identified on the basis of a potential level at the control terminal. This configuration allows the respective vehicle power generation devices to respond to respectively different communication identifiers, which allows the high level device to effectively control the plurality of vehicle power generation devices. Second embodiment

Fig. 4 is a configuration view used to describe a method of controlling a vehicle power generation system according to a second embodiment of the invention. Several, for example, three vehicle power generation devices 300a, 300b and 300c and other accessories, for example, a vehicle start device 400 and a vehicle air conditioning system 500, are controlled by a level device. 200 up through a communication line 100 of the system.

Referring to Fig. 4, each of the vehicle power generation devices 300a, 300b and 300c has a plurality of C1, C2, and C3 communication terminals. For connection to the system communication line 100 from the high level device 200, each vehicle power generation device uses a different communication terminal (the power generation device No. 1 for a vehicle indicated by the number 300a uses the terminal Cl, the power generation device No. 2 for vehicle indicated by the number 300b uses the terminal C2, and the power generation device No. 3 for a vehicle indicated by the number 300c uses the terminal C3).

For example, the vehicle power generation devices in Fig. 3 respond to a communication identifier as the first vehicle power generation device when detecting a communication carrier (350) at the terminal C1. and respond to a communication identifier as a second or third vehicle power generation device when detecting a communication carrier at the C2 or C3 terminal.

By establishing a connection between the communication line in this way, it is not only possible to identify one of several vehicle power generation devices, but it is also possible to increase the reliability by reducing the defective contacts by only one connection point is sufficient to establish communications with the high level device.

As has been described, according to the second embodiment of the invention, in a method of controlling a vehicle power generation system equipped with a plurality of vehicle power generation devices in a single vehicle, wherein power generation control commands are provided to the plurality of vehicle power generation devices from a high level device and status reports are made from the plurality of vehicle power generation devices to the high level via a communication interface, a plurality of communication terminals are provided for each vehicle power generation device, and a particular power generation device for a vehicle is identified among the plurality of power generation devices. power for vehicle on the basis of the terminal among the several communication terminals, from which a communication signal is inputted. According to this configuration, since only one connection point is sufficient to establish communications with the high level controller, reliability can be increased by reducing the faulty contacts. Third embodiment

Fig. 5 is a configuration view used to describe a method of controlling a vehicle generation system according to a third embodiment of the invention. Several, for example, three, 300a, 300b and 300c power generation devices for vehicles and other accessories, for example, a vehicle starter device 400 and a vehicle air conditioner 500 are controlled by a control device. high level 200 by means of a communication line 100 of the system.

As shown in FIG. 5, in the third embodiment, a device directly connected to the communication line 100 of the system connected to the high level device 200 is the power generation device No. 1 (300a) for vehicle serving as a master power generation device in vehicle communication, and another one or more other slave power generating devices in communication (the power generation device No. 2 indicated by the vehicle number 300b and the generating device No. 3, indicated by the vehicle number 300c in FIG. 5), are connected to a local communication line 110 from the master communication power generating device 300a for a vehicle.

In a case where the high level controller 200 controls the vehicle power generation devices 300a, 300b and 300c, a message frame is transmitted to the master power generation device in vehicle communication 300a via the communication line 100 of the system. The master communication power generation device 300a for a vehicle accordingly performs an operation as a response to the message frame. Meanwhile, the vehicle communication master power generation device 300a converts the message frame from the high level controller 200 into an appropriate message frame and transmits the converted message frame to the slave power generation devices. communication 300b and 300c via the local communication line 110.

The slave communication power generation devices 300b and 300c for vehicle connected to the local communication line 110 acquire the message from the high level device 200 indirectly through the master power generation device in communication 300a for vehicle and perform operations as a response to the message.

In a case in which the message frame transmitted by the high level device 200 is a response request for acquiring operating state information of the vehicle power generation devices, the master power generating devices in communication and Communications slaves 300a, 300b and 300c for vehicle acquire the message frame from the high level device 200 directly or through the master communication power generation device 300a for a vehicle. The slave power generation devices in vehicle communication 300b and 300c report by transmitting their own internal state information to the master power generation device in vehicle communication 300a via the local communication line 110. The master communication power generation device 300a for vehicle then edits the own internal state information and the internal state information of the slave communication power generating devices 300b and 300c for vehicle reported via local communications. to collect them and transmit the resulting report to the high level controller 200.

As described, it is necessary to operate a vehicle power generation device among a plurality of vehicle power generation devices as a master power generation device in vehicle communication while operating other devices. vehicle power generation devices as slave power generation devices in vehicle communication. This can be achieved by, for example, preparing vehicle power generation devices of several types in which communication modes are set at the stage of manufacture. However, in the third embodiment, a method as follows is used as a method for determining whether the power generating devices of one type are operating as a master power generating device in vehicle communication or as a slave power generation device in vehicle communication.

In other words, with reference to FIG. 5, each of the power generation devices 300a, 300b and 300c for a vehicle is provided with a terminal Cm as the main communication terminal to be connected to the communication line 100 of the system to which the high level device 200 is connected, and a terminal Cs as a local communication terminal to be connected to the master communication power generation device in vehicle communication 300a, so that when the terminal Cm is connected to the communication line 100 of the system, that is to say, for example, when detecting a communication carrier at the terminal Cm, the corresponding device operates as a master power generating device in communication for vehicle, and when the terminal Cs is connected to the master power generation device in communication 300a for a vehicle, i.e., for example, detection of a communication carrier not at the level of the terminal Cm but

at the terminal Cs, the corresponding devices operate as slave power generation devices in communication 300b and 300c for vehicle.

As has been described, the master power generation device in vehicle communication can be distinguished from the slave power generating devices in vehicle communication based on the terminal in which a communication signal is inputted. For example, in a case where only one slave device in maximum communication can be connected to the local communication line, it is sufficient to distinguish the master power generation device in vehicle communication from the power generation device slave in communication for vehicle.

However, in a case such as that shown in FIG. 5, where several slave power generation devices in communication 300b and 300c for a vehicle are connected to a local communication line 110, it is necessary to identify the power generation devices. slave in communication for vehicle.

In this case, as a method of identifying the slave devices in communication, by providing the setting terminal Set as in the first embodiment, it is not only possible to identify the slave power generation devices in communication for vehicle based on the potential level, but it is also possible to set the functions as the master power generation device in vehicle communication and the slave power generation device in vehicle communication.

As described, according to the third embodiment, in a method of controlling a vehicle power generation system equipped with a plurality of vehicle power generation devices in a single vehicle, wherein control commands of power generation are provided to the plurality of vehicle power generation devices from a high level device and status reports are made from the plurality of vehicle power generation devices to the high level controller by the Through a communication interface, one of the plurality of vehicle power generation devices is directly connected to a communication line of the system connected to the high level controller to serve as a communication master power generating device. for a vehicle, and any of the other The vehicle power generation system is connected not directly to the communication line of the system connected to the high level device but to a local communication line connected to the system communication line through the master power generation device. in vehicle communication for use as a slave power generation device in communication. This configuration allows the high level controller to effectively control all of the vehicle power generation devices without requiring a new communication identifier. Fourth embodiment

Fig. 6 is a configuration view used to describe a method of controlling a vehicle power generation system according to a fourth embodiment of the invention. Several, for example, three vehicle power generation devices 300a, 300b and 300c and other accessories, for example, a vehicle start device 400 and a vehicle air conditioning system 500, are controlled by a level device. 200 up through a communication line 100 of the system.

In the fourth embodiment, each of the power generation devices 300a, 300b, and 300c is provided with a terminal Cm as the main communication terminal to connect to the communication line 100 of the system that is connected to the level device. 200, and Cs1 and Cs2 terminals as two local communication terminals to be connected to the master communication power generation device 300a for vehicle. Thus, the slave power generation devices in vehicle communication can be identified by inputting a communication signal from the master power generation device in vehicle communication 300a into different terminals Cs1 and Cs2.

For example, in the vehicle power generation system of Fig. 6, a vehicle power generation device becomes capable of responding to a communication identifier as a second vehicle power generation device when detecting a vehicle. a communication carrier not at the level of the terminal Cm but at the terminal Cs1, or responding to a communication identifier as the third vehicle power generation device when detecting a communication carrier at the level of the Cs2 terminal.

However, it should be noted that according to the configuration of Fig. 6, the communication master power generation device 300a for vehicle and the slave power generation devices in communication 300b and 300c for vehicle are connected through the lines 110 local communication according to a one-to-one correspondence. Therefore, it is not necessary to distinguish a slave power generation device in vehicle communication from another except in a case where the operations are individually set in the respective power generating devices for the vehicle.

When configured in this manner, since the modes of operation of the respective power generating devices for a vehicle can be set, omission of the settings will never occur, and the operating modes can be switched through the use devices of a single widespread pattern.

As described, according to the fourth embodiment, each vehicle power generation device has a main communication terminal to connect to the communication line of the system and a local communication terminal to connect to the communication line. of the system via the local communication line, and a vehicle power generation device having received a communication signal from the main communication terminal automatically operates as a master power generating device in vehicle communication while a vehicle power generation device having received the communication signal from the local communication terminal automatically operates as a slave power generation device in vehicle communication. Since the power generating device having received a communication signal from the main communication terminal connected to the system communication line from the high level device automatically operates as a master power generation device in vehicle communication devices of the same model may be used as a vehicle power generation device which functions as a master and as a vehicle power generation device which functions as a slave. It is thus possible to avoid a situation in which the vehicle power generation device as a master and the vehicle power generation device as a slave are mistakenly connected at the time of maintenance. Fifth embodiment

For example, the communication line 100 of the system shown in Fig. 6 is determined by the communication specification of the high level controller. However, as described, since the local communication line 110 makes a connection through the communication master power generation device 300a for a vehicle, it is possible to convert the communication protocol into the communication device. communication master power generation 300a for vehicle. One can thus more simply achieve a circuit by making identical the communication protocol of the local communication line and the communication protocol of the communication line of the system.

Figures 7 to 10 are views showing the control method of the vehicle power generation system according to the fifth embodiment of the invention and used to describe the operations of the master power generation device in vehicle communication and devices for generating slave power in communication for a vehicle of FIG. 6.

Fig. 7 shows operations of the master power generation device in vehicle communication when a message frame

An order for adjusting the operations of the vehicle power generation devices is transmitted from the high level controller.

A message frame consisting of, for example, a synchronous marker, an identifier, an order content, and an error test is transmitted from the high level device to the line of error. system communication.

With respect to the synchronous marker and the identifier, the communication master power generation device 300a for vehicle transmits the contents of the message frame input from the terminal Cm to which the communication line of the system is connected by the intermediate local communication lines connected to the terminal Csl and Cs2 terminal in the form of an intact signal. Meanwhile, the vehicle master 300a communication power generation device detects the starting position of the frame by means of the synchronous marker within the message frame and confirms that the frame message is a base order. the identifier transmitted from the high level device.

Upon confirmation that the message frame is an order based on the identifier transmitted by the high level device, the master communication power generation device 300a for vehicle transmits the contents of the message frame on the communication line of the

system input from the terminal Cm through the local communication lines connected to the terminal Csl or terminal Cs2 for the order content and the error test. Meanwhile, the vehicle master 300a communication power generation device converts the order content, for example, from serial content to parallel content to temporarily buffer the contents and normally completes the reception of the frame. message on the communication line of the system entered from the terminal Cm.

Therefore, the vehicle master 300a communication power generation device makes the adjustments according to the buffered content and begins to operate according to the modified content.

As has been described, by making the communication protocol of the local communication lines and the communication protocol of the communication line of the system identical, the message frame can be directly used on the communication line of the system as communication signal in the local communication lines. The master power generation device in vehicle communication therefore does not require a particular circuit serving as an interface with the local communication lines.

Fig. 8 is a view showing the operations of the slave communication power generating devices 300b and 300c for vehicle when a command message frame for setting operations is transmitted from the master power generating device in communication 300a. for vehicle.

As has been described, a message frame consisting of, for example, the synchronous marker, the identifier, the order content, and the error test is transmitted to the local communication lines from the communication device. high level through the communication communication master device 300a for vehicle.

Upon confirmation that the message frame is an order based on the identifier transmitted from the master communication power generation device 300a for a vehicle, the communication slave 300b and 300c slave power generation devices for vehicle convert the order content, for example, from serial content to parallel content, to temporarily store the content and normally complete reception of the message frame on the local communication lines inputted from the Csl terminal or the Cs2 terminal after which they perform the settings according to the buffered content and start working according to the modified content.

As has been described, by making the communication protocol of the local communication lines identical to the communication protocol of the communication line of the system, the need for a particular circuit can be eliminated because the same portion used for the command analysis in the master power generation device in vehicle communication can be used in the slave power generation devices in vehicle communication.

Fig. 9 is a view showing the operations of the vehicle communication master power generation device 300a when a response message frame for generating a status report is transmitted from the high level device to the generation devices. respective power for a vehicle.

A message frame consisting of, for example, a synchronous marker and an identifier is transmitted to the communication line of the system from the high level device.

With respect to the synchronous marker and the identifier, the communication master power generation device 300a for vehicle transmits the contents of the message frame input from the terminal Cm to which the communication line of the system is connected by the intermediate local communication lines connected to the terminal Csl and Cs2 terminal in the form of an intact signal. Meanwhile, the vehicle master 300a communication power generation device detects the starting position of the frame based on the synchronous marker within the message frame and confirms that the message frame is a response on the message frame. base of the identifier transmitted by the high level device.

Upon confirmation that the message frame is a response based on the identifier transmitted by the high level device, the master communication power generation device 300a for a vehicle converts the data portion of the entered signals to terminal level Csl

and the Cs2 terminal connected to the parallel data serial local data communication lines, and provisionally buffers the contents of the status reports of the slave communication power generating devices 300b and 300c for the vehicle. Meanwhile, the vehicle master 300a communication power generation device converts the status report content of the master power generating device into a vehicle communication 300a, for example, a content parallel to a serial content and transmits the content at the terminal Cm connected to the system bus. It then continuously edits the content of the status report of the slave power generation device in communication for vehicle connected to the terminal Csl and the content of the status report of the slave power generation device in communication for vehicle connected to the terminal Cs2. , both being provisionally buffered, as well as the status report contents of all the vehicle power generation devices to gather them into a single content. It further joins the resulting content with a redundancy bit line for an error test determined by the communication protocol, and generates a report for the high level device.

In a case where the high level device fails to normally receive the response message frames on the local communication lines that are received by the master communication power generation device 300a for a vehicle (in a case where a error is detected following an error test), by transmitting invert data of a normal bit line as a redundancy bit line for error testing by the master power generation device in a vehicle communication 300a, the high level device becomes capable of confirming the presence of an error in the data received from the master power generation device in the vehicle communication 300a.

As described, the vehicle master 300a communication power generation device requires the interface circuit to receive response messages from the slave communication power generating devices 300b and 300c for the vehicle. However, by making the communication protocol of the local communication lines identical to the communication protocol of the communication line of the system, the need for a particular design can be eliminated because the circuit block used to receive the message of The order at the terminal Cm can also be used to receive the response messages.

Fig. 10 is a view showing the operations of the slave communication power generating devices 300b and 300c for a vehicle when a response message frame for generating a status report is transmitted from the master power generating device to 300a communication for vehicle.

As described, for example, the synchronous marker and the identifier are transmitted to the local communication lines from the high level device through the communication master power generation device 300a for a vehicle.

Upon confirmation that the message frame is a response based on the identifier transmitted by the master communication power generation device 300a for vehicle, the contents of status reports of the slave power generation devices in communication 300b and 300c for vehicle are converted, for example, from a parallel content into a serial content and transmitted to the communication terminals connected to the master power generation device in communication 300a for vehicle, so that the reports are developed for the communication master power generation device 300a for a vehicle with a redundancy bit line for an error test determined by the communication protocol attached to the contents.

In this way, by making the communication protocol of the local communication lines identical to the communication protocol of the communication line of the system, the need to resort to a particular circuit can be eliminated because the same portions used to prepare the reports in the slave power generation devices in vehicle communication can be used in the master power generation device in vehicle communication.

As has been described, according to the fifth embodiment, by directly transmitting the communication frame of the high level device to the local communication lines, it is possible to eliminate the need to make a particular circuit available to the interface with the local communication lines. Also, using the same communication protocol as the communication protocol of the system communication line for the local communication lines, it is possible to control all of the power generation devices for vehicles efficiently by virtue of the high level control device with fewer additional circuits. Sixth embodiment

Fig. 11 is a view used to describe the operations of the master power generation device in vehicle communication that has received individual order messages for the high level control device vehicle power generation devices in a method. for controlling a vehicle power generation system according to a sixth embodiment of the invention. Fig. 12 is a view used to describe the operations of the vehicle communication slave power generation devices that have received individual order messages for the respective power generation devices for the communication master power generation device vehicle. for vehicle.

In the fifth embodiment above, the order content within the command message frame for setting the operations of the respective power generating devices from the high level device has a common content to the set of devices generating

power for vehicle. In contrast to the fifth embodiment, by causing a message frame to have the order contents

(orders M1, S1, and S2) for the respective power generation devices for vehicle such as those shown in Figures 11 and 12, it is possible in the sixth embodiment to make the settings of several power generation devices for a vehicle individually.

Various modifications and variations of this invention will be apparent to those skilled in the art without departing from the scope and spirit of this invention, and it should be understood that this is not limited to the embodiments illustrated herein disclosed.

Claims (9)

A method of controlling a vehicle power generation system having a plurality of power generation devices (300a, 300b, 300c) for a vehicle in a single vehicle, wherein power generation control commands are issued to a plurality of power generation devices (300a, 300b, 300c) for a vehicle from a high level device (200) and status reports are generated from the plurality of power generation devices (300a, 300b, 300c) for a vehicle to the high level device (200) via a communication interface (310), comprising the steps of. providing an adjustment terminal (330b) for identification of each vehicle power generating device (300a, 300b, 300c) for enabling communications of the high level device (200) to a particular power generating device for a vehicle ; and identifying the particular vehicle power generation device based on a potential level at the setting terminal (330b). A method of controlling a vehicle power generation system having a plurality of power generation devices (300a, 300b, 300c) for a vehicle in a single vehicle, wherein power generation control commands are issued to the plurality of power generation devices (300a, 300b, 300c) for a vehicle by a high level device (200) and status reports are developed from a plurality of power generating devices (300a, 300b, 300c) for a vehicle at high level device (200) via a communication interface (310), comprising the steps of: providing a plurality of communication terminals (C1, C2, C3) for each power generating device (300a) , 300b, 300c) for vehicles; and identifying a particular vehicle power generation device among the plurality of power generation devices (300a, 300b, 300c) for a vehicle based on the terminal, among the plurality of communication terminals (C1, C2, C3) from which a communication signal is input. A method of controlling a vehicle power generation system having a plurality of power generation devices (300a, 300b, 300c) for a vehicle in a single vehicle, wherein power generation control commands are issued to a plurality of power generation devices (300a, 300b, 300c) for a vehicle from a high level device (200) and status reports are generated from the plurality of power generation devices (300a, 300b, 300c) for a vehicle to the high level device (200) via a communication interface (310), comprising the steps of. connecting one of the plurality of vehicle power generation devices (300a) directly to a communication line (100) of the system connected to the high level device (200) to serve as a master power generation device in vehicle communication , and connect any of the other power generation devices (300b, 300c) for the vehicle not directly to the communication line (100) of the system connected to the high level device (200) but to a communication line local device (110) connected to the communication line (100) of the system via the master communication power generating device (300a) for a vehicle for use as a slave power generating device in vehicle communication. The method of controlling a vehicle power generation system according to claim 3, wherein: each power generating device (300a, 300b, 300c) has a main communication terminal (Cm) connected to the power line. communication (100) of the system and a local communication terminal (Cs1, Cs2) connected to the communication line (100) of the system via the local communication line (110); a power generation device (300a). ) for a vehicle which has received a communication signal from the main communication terminal (Cm) operates automatically as a master power generation device in vehicle communication, and power generation devices (300b, 300c) for a vehicle which has received the communication signal of the local communication terminal (Cs1, Cs2) operate automatically as a slave power generation device in communication with each other. r vehicle. The method of controlling a vehicle power generation system according to claim 3, wherein: each vehicle power generating device (300a, 300b, 300c) is provided with a device identification adjusting terminal for to enable communications from the high level device (200) to a particular power generation device for a vehicle, and the master communication power generating device (300a) for a vehicle and the slave power generating device in communication (300b). , 300c) for a vehicle are identified on the basis of a potential level at the control terminal. The method of controlling a vehicle power generation system according to claim 4, wherein: two or more power generating devices (300b, 300c) for a vehicle operating as a slave power generating device in communication for are present, and each automatically acquires an identifier as a slave power generation device in vehicle communication by receiving an input of a communication signal from the master communication power generating device (300a) for a vehicle. a different terminal. A method of controlling a vehicle power generation system according to claim 4, wherein: in a case where a single slave communication power generating device for vehicle is connected to the local communication line (110) , the vehicle master communication power generation device (300a) establishes communications using a communication protocol of the local communication line (110) identical to a communication protocol of the communication line (100) of the system. A method of controlling a vehicle power generation system according to claim 4, 6, or 7 wherein: the communication signal is a message frame containing a synchronous marker, an identifier, a command content, and an error test. The method of controlling a vehicle power generation system according to claim 8, wherein: the message frame contains an order content for each vehicle power generation device (300a, 300b, 300c).