JPH11222083A - On-vehicle load synchronizing drive control system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make drive control of an on-vehicle load harmonized as a total unit realizable, even in the case that each of the on-vehicle load of a common attribute belongs to a mutually different multiloop control unit. SOLUTION: A plurality of multiloop control units 3, 5, 7, 9, 11 is connected among them respectively through multiplex signal transmission lines 2a, 2b, 2c, 2d and a synchronizing signal transmission lines 4a, 4b, 4c, 4d, of a plurality of the multiloop control units 3, 5, 7, 9, 11, and each of the multiloop control units 3, 7, 11, receiving a load drive control signal related to an on-vehicle load belonging to itself and a synchronizing signal respectively drive controls each of on-vehicle loads 13, 17, 21, 25, 29, 33 of a common attribute by the timing in accordance with the synchronizing signal in a condition maintaining a cooperation relation among the itself and the other multiloop control units.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle-mounted load having a common attribute, such as a turn signal lamp or a hazard lamp, among a plurality of vehicle-mounted loads distributed in various parts of a vehicle. The present invention relates to an in-vehicle load synchronous drive control system that can realize harmonized in-vehicle load drive control as a whole even when belonging to different multiplex control units.

[0002]

2. Description of the Related Art Conventionally, for example, Japanese Unexamined Patent Publication No.
As disclosed in Japanese Unexamined Patent Publication No. 8 (KOKAI) No. 8, there is known an on-vehicle load drive control system that drives and controls a plurality of on-vehicle loads distributed in various places in a vehicle.

As an example of this kind of on-vehicle load drive control system, as shown in FIG. 3, an on-vehicle load drive control system 101 is composed of a plurality of on-vehicle loads 103 distributed in various places of a vehicle, and a power supply line. A battery 105 that supplies power to a plurality of on-vehicle loads 103 and the like via the 104, and a plurality of operation switches 1 provided in association with the on-vehicle loads 103
07, a first multiplex control unit 109 to which a plurality of operation switches 107 are connected, a plurality of driving elements 111 for respectively controlling the driving of the plurality of in-vehicle loads 103, and a second driving unit 111 to which the plurality of driving elements 111 are connected. Multiple control unit 11
3 and connection 1 between multiplex control units 109 and 113
And multiple multiplexed signal lines 115.

In the on-vehicle load drive control system 101, first, the first multiplex control unit 109 multiplexes the load drive control signals input from the plurality of operation switches 107 and generates a multiplexed load drive control signal train. Is serially transmitted to the second multiplex control unit 113 via the multiplex signal line 115. In response to this, the second multiplexing control unit 113 receives and stores the multiplexed load drive control signal sequence, and distributes and supplies the corresponding load drive control signal to each of the plurality of drive elements 111. , The driving of each of the plurality of on-vehicle loads 103 is controlled in each of the plurality of driving elements 111.

[0005] The above-mentioned load control system 101
According to the above, a plurality of operation switches 107 and a plurality of in-vehicle loads 103 corresponding to the plurality of operation switches 107 are connected in series with each other, and a plurality of series circuits are compared with a system in which the plurality of operation switches 107 are connected in parallel to the battery 105. Thus, a simple wiring structure in which the control signal line 115 and the power supply line 104 are independently separated can be realized.

[0006]

However, in the above-described conventional vehicle load drive control system 101,
It is difficult to drive-control each of the in-vehicle loads having a common attribute, such as a turn signal lamp and a hazard lamp, in a state where synchronization is maintained, among a plurality of in-vehicle loads distributed in various parts of the vehicle. There were inherent problems to be solved.

More specifically, in the above-described load control system 101, each of the first and second multiplex control units 109 and 113 multiplexes the load drive control signals input from the plurality of operation switches 107. The multiplexing process or the demultiplexing process for distributing and supplying the multiplexed load drive control signal sequence to each of the corresponding plurality of driving elements 111 is performed, and the time corresponding to the multiplexing process or the demultiplexing process is respectively corresponding. Therefore, as shown in FIG.
As a result, when each of the vehicle loads having the common attribute among the plurality of vehicle loads belongs to different multiplex control units, each of the vehicle loads having the common attribute has a time delay. It is difficult to control the drive of each of them in a state where synchronization is maintained.

Therefore, even when each of the vehicle loads having the common attribute belongs to mutually different multiplex control units, each of the vehicle loads having the common attribute is drive-controlled in a state where synchronization is maintained. The development of a new system that can do so has been awaited among the stakeholders.

The present invention has been made in view of the above-mentioned circumstances, and a plurality of multiplex control units are connected via a multiplex signal transmission line and a synchronization signal transmission line, respectively. Among the units, each of the multiplex control units that has received the load drive control signal and the synchronization signal related to the on-vehicle load belonging to itself, maintains the cooperative relationship with itself and the other multiplex control units, and outputs the synchronization signal. By controlling the driving of each of the on-vehicle loads having the common attribute with the timing according to the above, even when each of the on-vehicle loads having the common attribute belongs to a different multiplex control unit, harmonization is achieved as a whole. An object of the present invention is to provide an on-vehicle load synchronous drive control system capable of realizing on-vehicle load drive control.

[0010]

In order to solve the above-mentioned problems, the present invention of claim 1 relates to a plurality of on-vehicle loads distributed in various parts of a vehicle and a plurality of on-vehicle loads associated with the plurality of on-vehicle loads. A plurality of operation input means provided, and a load drive control signal generated in response to an operation input from the plurality of operation input means to drive and control the plurality of in-vehicle loads; A plurality of load drive control means for driving and controlling each of the plurality of load control means; a plurality of multiplex control units each configured by dispersively connecting at least one of the operation input means and the load drive control means; A multiplexed signal transmission line connecting the multiplexed control units so as to transmit the multiplexed load drive control signals, and Common Attributes and synchronization signal transmission path for as connection for transmitting a synchronization signal to be shared among in-vehicle loads, is configured to include a, among the plurality of multiplex control unit,
Each of the multiplex control units receiving the load drive control signal and the synchronization signal destined for the load drive control means connected thereto has a cooperative relationship with itself and the other multiplex control units. At a timing according to the synchronization signal, the load drive control signal is respectively supplied to the load drive control means corresponding to the common attribute vehicle load, and each of the load drive control means corresponding to the common attribute vehicle load is Each of the in-vehicle loads of the common attribute is
The gist of the present invention is to perform drive control in a state where synchronization is maintained.

According to the first aspect of the present invention, among the plurality of multiplex control units, each of the multiplex control units receiving the load drive control signal and the synchronization signal destined for the load drive control means connected thereto has: While maintaining the cooperative relationship between itself and the other multiplex control units, the load drive control signal is supplied to the load drive control means corresponding to the in-vehicle load having the common attribute at a timing according to the synchronization signal, and the common attribute is provided. Each of the load drive control means corresponding to the on-vehicle load drives and controls each of the on-vehicle loads having the common attribute in a state in which synchronization is maintained. Even when each of the on-vehicle loads having the common attribute belongs to a different multiplex control unit, the on-vehicle load drive control is harmonized as a whole. It can be realized.

Further, the invention of claim 2 is characterized in that the on-vehicle load having the common attribute is a turn signal lamp.

Further, the invention according to claim 3 is characterized in that the on-vehicle load having the common attribute is a hazard lamp.

According to a fourth aspect of the present invention, there is provided a multiplex control unit which receives a load drive control signal and a synchronization signal destined for load drive control means connected to itself, among the plurality of multiplex control units. The multiplex control unit functioning as one arbitrary master controls the operation of each slave multiplex control unit under the control of the multiplex control unit functioning as another slave, thereby allowing the multiplex control unit to communicate with itself and other multiplex control units. The main point is to maintain a cooperative relationship.

[0015]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of an on-vehicle load synchronous drive control system according to the present invention.

FIG. 1 is a schematic block diagram of an on-vehicle load synchronous drive control system according to the present invention, and FIG. 2 is a timing chart for explaining the operation of the on-vehicle load synchronous drive control system according to the present invention.

As shown in FIG. 1, an on-vehicle load synchronous drive control system 1 according to the present invention transmits a multiplexed load drive control signal between a plurality of multiplex control units 3, 5, 7, 9, and 11. Multiplexed signal transmission lines 2a, 2b, 2c, 2
d, and on-vehicle loads 13, 17, 21, 25, 25 of the common attribute
It is configured to be connected via synchronization signal transmission lines 4a, 4b, 4c, 4d for transmitting a synchronization signal shared between 29 and 33.

As shown in FIG. 1, for example, as shown in FIG. 1, a plurality of multiplex control units are provided at appropriate positions on the front side of the vehicle such as in an engine room.
And a cowl side multiplex control unit 5 provided on the cowl side, a meter multiplex control unit 7 and a column switch multiplex control unit 9 provided near the combination meter and the like, and provided at an appropriate position on the vehicle rear side such as in a trunk room. And the rear multiplex control unit 11 to be used. The number and arrangement position of the multiplex control units are not limited to the above-described embodiments, and an appropriate number of multiplex control units can be arranged at appropriate positions in the vehicle.

The front multiplex control unit 3 is connected to the front left (F) via first and second transistors 15 and 19, respectively, which are positioned as load drive control means.
L) Turn signal lamp 13 and front right (F
R) The turn signal lamp 17 is connected, and the other ends of the turn signal lamps 13 and 17 are connected to the battery B.

First and second transistors 15, 19
Turns on only while the load drive control signal for lighting the turn signal lamps 13 and 17 is being input from the front multiplex control unit 3, and the current supplied from the battery B flows to the turn signal lamps 13 and 17, respectively. As a result, while the turn signal lamps 13 and 17 are turned on, they are turned off when the input of the load drive control signal from the front multiplex control unit 3 is interrupted, and the current path from the battery B to the turn signal lamps 13 and 17 is cut off. Thereby, the turn signal lamps 13 and 17 are configured to be turned off.

The meter multiplexing control unit 7 has a left (L side) meter indicator 21 and a right (R side) meter indicator 25 via third and fourth transistors 23 and 27, respectively, which are positioned as load drive control means. Are connected, and the meter indicators 21 and 25
Is connected to the battery B.

Third and fourth transistors 23 and 27
Is turned on only during a period in which a load drive control signal for turning on the meter indicators 21 and 25 is input from the meter multiplexing control unit 7 and the current supplied from the battery B flows to the meter indicators 21 and 25, respectively. , While the meter indicators 21 and 25 are turned on, when the input of the load drive control signal from the meter multiplexing control unit 7 is interrupted, the meter indicators 21 and 25 are turned off and the current path from the battery B to the meter indicators 21 and 25 is cut off. It is configured so that the indicators 21 and 25 are turned off.

The column switch multiplex control unit 9 includes:
Column switch 3 for left and right turn signal lamps
A plurality of switches positioned as operation input means such as 7 and 39 are connected, and column switches 37 and 39 are connected.
Is grounded.

Each time the occupant operates the column switches 37 and 39, the contacts are switched to an open position or a closed position, and are configured to generate a load drive control signal corresponding to the contact position. The load drive control signal thus input is input to the column switch multiplex control unit 9. In addition,
The operation input means is not limited to the left and right turn signal lamp column switches 37 and 39. For example, a hazard lamp switch for inputting a flashing instruction of a hazard lamp, and a flashing instruction for a headlight are input. Any type of switch used in a vehicle, such as a headlight switch, a vehicle width light switch for inputting a flashing instruction of a vehicle width light, and a horn switch for inputting a horn sounding instruction, may be employed.

The rear multiplex control unit 11 receives a rear left (RL) turn signal lamp 29 and a rear right (RR) turn signal via fifth and sixth transistors 31 and 35, respectively, which are positioned as load drive control means. The lamp 33 is connected, and the other ends of the turn signal lamps 29 and 33 are connected to the battery B.

Fifth and sixth transistors 31, 35
Turns on only while the load drive control signal for turning on the turn signal lamps 29 and 33 is being input from the rear multiplex control unit 11, and the current supplied from the battery B flows to the turn signal lamps 29 and 33, respectively. As a result, the turn signal lamps 29 and 33 are turned on, and are turned off when the input of the load drive control signal from the rear multiplex control unit 11 is interrupted, and the current path from the battery B to the turn signal lamps 29 and 33 is cut off. Thereby, the turn signal lamps 29 and 33 are turned off.

Next, the operation of the on-vehicle load synchronous drive control system 1 according to the present invention will be described in detail with reference to FIGS.

First, the column switch multiplex control unit 9
When a load drive control signal is input from switches such as the column switches 37 and 39 positioned as operation input means, an on-vehicle load to be driven is changed to another on-vehicle load based on the input load drive control signal. Then, it is determined whether or not a cooperative condition is satisfied that indicates whether the load is a common attribute that requires a cooperative relationship and is distributed and belongs to a plurality of multiple control units.

As a result of this determination, when it is determined that the cooperative condition is not satisfied, that is, the vehicle load to be driven has a single attribute vehicle load that does not require a cooperative relationship with another vehicle load such as a horn. Or the in-vehicle load having the common attribute but all the in-vehicle loads belong to one multiplex control unit, the column switch multiplex control unit 9 outputs the input load drive control signal. Is transmitted to a multiplex control unit serving as a predetermined destination via the multiplex signal transmission path 2, and the multiplex control unit serving as a destination
The normal driving control of the vehicle-mounted load is executed.

On the other hand, when it is determined that the coordination condition is satisfied, the column switch multiplex control unit 9 determines, for each type of the vehicle load to be driven, based on the input load drive control signal. The synchronization signal shared between the vehicle loads having the common attribute, which is set and stored in advance, is read, and the input load drive control signal and the read synchronization signal are transmitted to the multiplex signal transmission line 2 and the synchronization signal transmission line 4, respectively. Then, the data is transmitted to a plurality of multiplex control units serving as predetermined destinations.

In response, each of the destination multiple control units maintains a cooperative relationship between itself and the other multiple control units, and outputs a load drive control signal at a timing according to the synchronization signal. Each of the load drive control means corresponding to the common attribute vehicle load is supplied to the load drive control means corresponding to the common attribute vehicle load. Drive control.

Specifically, as shown in FIG. 1, when the left turn signal lamp column switch 37 is operated and input, the plurality of turn signal lamps installed on the left side of the vehicle and the combination meter are arranged. A load drive control signal to turn on the meter indicator is generated, but the turn signal lamp and the meter indicator as the on-vehicle load are on-vehicle loads having a common attribute that requires a cooperative relationship with other lamps, and a plurality of multiplexed loads. Since they belong to the control units in a distributed manner, the above-described coordination condition is satisfied.

Therefore, the column switch multiplex control unit 9 is shared among the turn signal lamps having the common attribute, which includes the blink cycle of the turn signal lamp and the meter indicator, based on the input load drive control signal. The synchronization signal is read out, and the input load drive control signal and the read out synchronization signal are transmitted to the plurality of multiplex control units 3, 7, and 11 respectively.

In response to this, each of the destination multiplex control units 3, 7, and 11, while maintaining a cooperative relationship with itself and the other multiplex control units, has a blinking cycle timing according to the synchronization signal. And the load drive control signal is used as a turn signal type lamp 13, 1 having a common attribute.
7, 21, 25, 29, 33 are supplied to the transistors 15, 19, 23, 27, 31, 35, respectively.
Each transistor 1 corresponding to 21, 25, 29, 33
Each of 5, 19, 23, 27, 31, 35 is a turn signal type lamp 13, 17, 21, 25, 25 of a common attribute.
As shown in FIG. 2, each of 29 and 33 is drive-controlled in a state where synchronization is maintained. As a result, of the plurality of on-vehicle loads distributed in various places of the vehicle, turn signal lamps 13, 17, 21, and 22 having a common attribute are provided.
Even when each of 5, 29, 33 belongs to a mutually different multiplex control unit, it is possible to realize the drive control of the turn signal lamps that is harmonized as a whole.

As described above in detail, according to the on-vehicle load synchronous drive control system of the present invention, the load drive control signal destined to the load drive control means connected to itself among the plurality of multiplex control units. Each of the multiplex control units receiving the synchronization signal, while maintaining a cooperative relationship between itself and the other multiplex control units, responds to the load drive control signal with the timing according to the synchronization signal to the vehicle load having the common attribute. Respectively, and each of the load drive control means corresponding to the in-vehicle load having the common attribute drives and controls each of the in-vehicle loads having the common attribute in a state where synchronization is maintained. When a plurality of on-vehicle loads having a common attribute among a plurality of on-vehicle loads distributed in various parts of a vehicle belong to mutually different multiplex control units, Even, it is possible to realize the drive control of the harmonious vehicle load as a whole.

The present invention is not limited to the above-described embodiment, but can be embodied in other modes by making appropriate modifications within the scope of the claims.

That is, for example, the wiring topology of each of the multiplex signal transmission line and the synchronization signal transmission line connecting the multiplex control units is not limited to the example of the above-described embodiment, but may be a ring type or a bus type. , A tree form, or a composite form thereof, may be employed.

Further, in the embodiment according to the present invention, the form in which the column switch as the operation input means is connected to the column switch multiplex control unit has been described as an example, but the present invention is not limited to the above-described embodiment. The present invention is not limited to this, and a mode in which at least one of the operation input unit and the load drive control unit is connected to each of one or two or more arbitrary multiplex control units in a distributed manner may be adopted.

Further, in the embodiment according to the present invention,
As an on-vehicle load, a turn signal lamp and a meter indicator have been described by way of example. However, the present invention is not limited to the above-described example of the embodiment. Any form of on-vehicle load used in a vehicle, such as an indoor light, a wheel braking device, or the like, can be adopted. In particular, when a wheel braking device is employed as the on-vehicle load, the vehicle speed can be reduced by maintaining the posture of the vehicle in a stable state.

Finally, in the present invention, among the plurality of multiplex control units, each of the multiplex control units receiving the load drive control signal and the synchronizing signal destined for the load drive control means connected thereto has its own and its own. Described as a technical idea that, while maintaining cooperative relations with other multiplex control units, load drive control signals are supplied to load drive control means corresponding to the on-vehicle load with the common attribute at the timing according to the synchronization signal. However, specifically, among a plurality of multiplex control units, a multiplex control unit that receives a load drive control signal and a synchronization signal destined for a load drive control unit connected to itself, The multiplex control unit functioning as a master is controlled by each slave multiplex control unit under the multiplex control unit functioning as another slave. By performing the bets operation management, it can of course be also be composed as to maintain the cooperative relationship between itself and other multiple control units.

[0041]

According to the first aspect of the present invention, among a plurality of on-vehicle loads distributed in various parts of the vehicle, each of the on-vehicle loads having a common attribute belongs to a different multiplex control unit. Even in this case, there is an extremely excellent effect that it is possible to realize harmonious drive control of the on-vehicle load as a whole.

[Brief description of the drawings]

FIG. 1 is a schematic block configuration diagram of an on-vehicle load synchronous drive control system according to the present invention.

FIG. 2 is a timing chart for explaining the operation of the on-vehicle load synchronous drive control system according to the present invention.

FIG. 3 is a schematic block diagram of a vehicle-mounted load synchronous drive control system according to a conventional example.

FIG. 4 is a timing chart for explaining a problem according to a conventional example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 On-vehicle load synchronous drive control system 2a, 2b, 2c, 2d Multiple signal transmission line 3 Front multiple control unit 4a, 4b, 4c, 4d Synchronous signal transmission line 5 Cowling side multiple control unit 7 Meter multiple control unit 9 Column switch multiple control Unit 11 Rear multiplex control unit 13 Front left (FL) turn signal lamp (vehicle load) 15 First transistor (load drive control means) 17 Front right (FR) turn signal lamp (vehicle load) 19 Second transistor (load) Drive control means) 21 Left (L side) meter indicator (vehicle load) 23 Third transistor (load drive control means) 25 Right (R side) meter indicator (vehicle load) 27 Fourth transistor (load drive control means) 29 Rear left (RL) turn signal Pump (vehicle load) 31 fifth transistor (load drive control means) 33 rear right (RR) turn signal lamp (vehicle load) 35 sixth transistor (load drive control means) 37 column switch for left turn signal lamp (operation) Input means) 39 Column switch for right turn signal lamp (operation input means) B Battery

Claims (4)

[Claims] 1. A plurality of in-vehicle loads distributed in various places of a vehicle, a plurality of operation input means provided in association with the plurality of in-vehicle loads, and operation inputs from the plurality of operation input means A plurality of load drive control means for driving and controlling each of the plurality of in-vehicle loads according to a load drive control signal for driving and controlling the plurality of in-vehicle loads; A plurality of multiplex control units each configured by dispersively connecting at least one of the load drive control means; and transmitting the multiplexed load drive control signal between the plurality of multiplex control units. A multiplexed signal transmission path connected as described above, and a synchronous signal shared between the on-vehicle loads having a common attribute among the on-vehicle loads among the plurality of multiplex control units. And a multiplex receiving the synchronization signal and the load drive control signal destined to the load drive control means connected to itself, among the plurality of multiplex control units. Each of the control units maintains a cooperative relationship between itself and the other multiplex control units, and, at a timing according to the synchronization signal, converts the load drive control signal to a load drive control corresponding to the on-vehicle load having the common attribute. Each of the load driving control means corresponding to the vehicle load having the common attribute controls the driving of each of the vehicle loads having the common attribute in a state where synchronization is maintained. Load synchronous drive control system. 2. The on-vehicle load synchronous drive control system according to claim 1, wherein the on-vehicle load having the common attribute is a turn signal lamp. 3. The on-vehicle load synchronous drive control system according to claim 1, wherein the on-vehicle load having the common attribute is a hazard lamp. 4. A multiplex control unit that receives a load drive control signal and a synchronization signal destined for a load drive control unit connected to itself from among the plurality of multiplex control units, and as one arbitrary master. The multiplex control unit that functions is to maintain the cooperative relationship between itself and other multiplex control units by managing the operation of each slave multiplex control unit under the control of the multiplex control unit that functions as another slave. The on-vehicle load synchronous drive control system according to claim 1, wherein: