JP3457171B2 - In-vehicle load synchronous drive control system - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plurality of vehicle-mounted loads dispersedly arranged in various places of a vehicle, each of which has a common attribute such as a turn signal lamp or a hazard lamp. The present invention relates to an in-vehicle load synchronous drive control system capable of realizing in-vehicle drive load control in harmony as a whole even when belonging to different multiple control units.

[0002]

2. Description of the Related Art Conventionally, for example, Japanese Patent Laid-Open No. 7-25726.
As disclosed in Japanese Patent Publication No. 8, there is known an in-vehicle load drive control system for driving and controlling a plurality of in-vehicle loads dispersedly arranged in various places of the vehicle.

As an example of this type of vehicle-mounted load drive control system, as shown in FIG. 3, a vehicle-mounted load drive control system 101 includes a plurality of vehicle-mounted loads 103 dispersedly arranged in various places of a vehicle and a power supply line. A battery 105 that supplies electric power to a plurality of vehicle-mounted loads 103 and the like via 104, and a plurality of operation switches 1 provided in association with the vehicle-mounted loads 103.
07, a first multiplex control unit 109 to which a plurality of operation switches 107 are connected, a plurality of drive elements 111 that respectively drive and control a plurality of vehicle-mounted loads 103, and a second drive element 111 to which a plurality of drive elements 111 are connected. Multiple control unit 11
3 to connect between the multiplex control units 109 and 113 1
And a multiplex signal line 115 of a book.

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 the multiplexed load drive control signal sequence. Are 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 demultiplexes the load drive control signal corresponding to each of the plurality of drive elements 111 to be distributed and supplied. By performing the above, each of the plurality of drive elements 111 drives and controls each of the plurality of vehicle-mounted loads 103.

The on-vehicle load drive control system 101 described above
According to the method, a plurality of operation switches 107 and a plurality of in-vehicle loads 103 corresponding to the operation switches 107 are connected in series to each other, and a plurality of series circuits are connected in parallel to a battery 105 in comparison with a system. It is possible to realize a simple wiring structure in which the control signal line 115 and the power supply line 104 are independently separated.

[0006]

However, in the conventional vehicle-mounted load drive control system 101 described above,
It is difficult to drive and control each of the on-vehicle loads having common attributes, such as turn signal lamps and hazard lamps, among a plurality of on-vehicle loads dispersedly arranged in various places of the vehicle while maintaining synchronization. There was an inherent problem to be solved.

To describe this, in the above-described vehicle-mounted load drive 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. A multiplexing process or a demultiplexing process for distributing and supplying the multiplexed load drive control signal sequence to each of the corresponding plurality of drive elements 111 is performed, and the multiplexing process or the demultiplexing process has a time corresponding to each. Therefore, as shown in FIG. 4, the in-vehicle load 103 corresponding to the input of the operation switch 107
As a result, there is a time delay in the rise of each of the vehicle loads having a common attribute among a plurality of vehicle loads, and when the vehicle loads having the common attribute belong to mutually different multiplex control units, the vehicle loads having the common attribute respectively. However, it has been difficult to control the drive of each of them while maintaining the synchronization.

Therefore, even if each of the vehicle-mounted loads having the common attribute belongs to different control units, the vehicle-mounted loads having the common attribute are drive-controlled in a state where the synchronization is maintained. There was a long-awaited development of a new system capable of doing so.

The present invention has been made in view of the above-mentioned circumstances, and a plurality of multiplex control units are connected to each other through 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 in-vehicle load belonging to the other unit, maintains the cooperative relationship with itself and the other multiplex control units while maintaining the synchronization signal. By controlling each of the in-vehicle loads having the common attribute with the timing according to the above, even if each of the in-vehicle loads having the common attribute belong to different multiple control units, the overall harmony is achieved. An object of the present invention is to provide an in-vehicle load synchronous drive control system capable of realizing in-vehicle load drive control.

[0010]

In order to solve the above-mentioned problems, the invention according to claim 1 relates to a plurality of vehicle-mounted loads distributedly arranged in various places of a vehicle and the plurality of vehicle-mounted loads. A plurality of operation input means provided, and according to a load drive control signal generated in response to an operation input from the plurality of operation input means to drive control the plurality of vehicle loads, A plurality of load drive control means for driving and controlling each of the plurality of load control means; and a plurality of multiple control units each configured by connecting a plurality of at least one of the operation input means and the load drive control means in a distributed manner. Of the plurality of vehicle-mounted loads between the multiplex control units and the multiplex signal transmission line that connects the multiplex control units so as to transmit the multiplexed load drive control signals. A synchronization signal transmission line as connected to transmit a synchronization signal that is shared among in-vehicle loads common attributes, is configured to include a, enter the load driving control signal multiplexing
In the control unit, the in-vehicle load to be driven is
Is it an in-vehicle load with a common attribute that requires a cooperative relationship with the load?
Belong to each of the multiple control units
Whether or not the cooperation condition with the content of
If it is determined that the cooperation condition is satisfied,
The settings are stored in advance for each type of vehicle load.
Read the synchronization signal that is shared between the in-vehicle loads
And outputs the load drive control signal together with the multiple control signals.
Transmitted to the control unit, among the plurality of multiplex control unit, each of the load driving control signal, and a multiplex control unit that has received the synchronization signal to the load drive control means connected to itself and the destination is itself and 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 while maintaining the cooperative relationship with other multiplex control units, and the common control is performed. Each of the load drive control means corresponding to the on-vehicle load of the attribute is characterized in that each of the on-vehicle loads of the common attribute is drive-controlled in a state where the synchronization is maintained.

According to the invention of claim 1, among the multiplex control units, each of the multiplex control units receiving the load drive control signal and the synchronization signal destined to the load drive control means connected to itself is While maintaining the cooperative relationship between itself and other multiplex control units, the load drive control signal is supplied to the load drive control means corresponding to the on-vehicle load of the common attribute at a timing according to the synchronization signal, and the common attribute of the common attribute is supplied. Since 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 where the synchronization is maintained, as a result, a plurality of vehicle-mounted loads dispersedly arranged in various places of the vehicle are arranged. Even if each of the on-vehicle loads of the common attribute among the on-vehicle loads belong to different control units, the drive control of the on-vehicle load is harmonized as a whole. It can be realized.

The invention according to claim 2 is characterized in that the on-vehicle load having the common attribute is a turn signal lamp.

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

According to a fourth aspect of the present invention, there is provided, among the plurality of multiplex control units, a multiplex control unit which receives a load drive control signal and a synchronization signal destined for a load drive control means connected to itself. , A multiplex control unit functioning as any one master is controlled by itself and other multiplex control units by managing the operation of each slave multiplex control unit under the multiplex control unit functioning as another slave. The main idea is to maintain a cooperative relationship in.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of an in-vehicle load synchronous drive control system according to the present invention will be described in detail below with reference to the drawings.

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

As shown in FIG. 1, an in-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, 11. Multiple signal transmission lines 2a, 2b, 2c, 2
d, and vehicle-mounted loads 13, 17, 21, 25 having common attributes
It is configured to be connected via sync signal transmission lines 4a, 4b, 4c and 4d which transmit a sync signal shared between 29 and 33.

As the plurality of multiplex control units, for example, as shown in FIG. 1, a front multiplex control unit 3 provided at an appropriate position on the front side of the vehicle such as in the 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, etc., and provided at appropriate positions on the vehicle rear side such as in the trunk room. The rear multiplex control unit 11 can be illustrated. The number and arrangement position of the multiplex control units are not limited to the above-mentioned form, 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 side (F) via first and second transistors 15 and 19 positioned as load drive control means, respectively.
L) Turn signal lamp 13 and front right side (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
Is turned on only during a period in which a load drive control signal for turning on the turn signal lamps 13 and 17 is input from the front multiplex control unit 3, and the current supplied from the battery B is supplied to the turn signal lamps 13 and 17, respectively. Thus, the turn signal lamps 13 and 17 are turned on, while the turn signal lamps 13 and 17 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. Thus, the turn signal lamps 13 and 17 are turned off.

In the meter multiplex control unit 7, a left (L side) meter indicator 21 and a right (R side) meter indicator 25 are provided via third and fourth transistors 23 and 27 positioned as load drive control means, respectively. Is connected, and the meter indicators 21, 25 are connected.
The other end of is connected to the battery B.

Third and fourth transistors 23, 27
Is turned on only while the load drive control signal for turning on the meter indicators 21 and 25 is input from the meter multiplex control unit 7, and the current supplied from the battery B is supplied to the meter indicators 21 and 25, respectively. , The meter indicators 21 and 25 are turned on, and when the input of the load drive control signal from the meter multiplex control unit 7 is stopped, 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 to turn off the indicators 21 and 25.

The column switch multiple 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, 39, etc. are connected to the column switches 37, 39.
The other end of is grounded.

Each time the column switches 37 and 39 are operated by an occupant, the contact is switched between the open position and the closed position, and a load drive control signal corresponding to the contact position is generated. The load drive control signal 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 blink instruction of a hazard lamp and a blink instruction for a headlight are input. Any type of switch used in a vehicle, such as a headlight switch, a vehicle side light switch for operating and inputting a blinking instruction of a vehicle side light, and a horn switch for operating and inputting a ringing instruction of a horn, can be adopted.

In the rear multiplex control unit 11, a rear left (RL) turn signal lamp 29 and a rear right (RR) turn signal are provided through fifth and sixth transistors 31 and 35 respectively positioned as load driving 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
Is turned on only during a period in which a load drive control signal for turning on the turn signal lamps 29, 33 is input from the rear multiplex control unit 11, and the current supplied from the battery B is supplied to the turn signal lamps 29, 33, respectively. As a result, the turn signal lamps 29, 33 are turned on, while the turn signal lamps 29, 33 are turned on when the input of the load drive control signal from the rear multiplex control unit 11 is cut off, and the current path from the battery B to the turn signal lamps 29, 33 is cut off. As a result, the turn signal lamps 29 and 33 are turned off.

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

First, the column switch multiple control unit 9
When a load drive control signal is input from a switch such as a column switch 37 or 39 positioned as an operation input unit, the vehicle-mounted load to be driven is the other vehicle-mounted load based on the input load drive control signal. It is determined whether or not a vehicle-mounted load having a common attribute that requires a cooperative relationship with and satisfying a cooperative condition having the contents of whether they belong to a plurality of multiple control units in a distributed manner.

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

On the other hand, when it is determined that the cooperative condition is satisfied as a result of the above determination, the column switch multiplex control unit 9 determines, on the basis of the input load drive control signal, for each type of on-vehicle load to be driven. A synchronization signal that is preset and stored and is shared between vehicle-mounted loads having a common attribute is read, and the input load drive control signal and the read synchronization signal are transmitted to the multiple signal transmission path 2 and the synchronization signal transmission path 4, respectively. Via a plurality of multiplex control units which are predetermined destinations.

In response to this, each of the plurality of destination multiplex control units receives the load drive control signal at the timing according to the synchronizing signal while maintaining the cooperative relationship between itself and the other multiplex control units. Each of the load drive control means corresponding to the on-vehicle load of the common attribute supplies the load drive control means corresponding to the on-vehicle load of the common attribute, and each of the load drive control means corresponding to the on-vehicle load of the common attribute respectively in a state where synchronization is maintained. Drive control.

More specifically, as shown in FIG. 1, when the left turn signal lamp column switch 37 is operated and input, a plurality of turn signal lamps are installed on the left side of the vehicle, and the turn signal lamps are installed in the combination meter. A load drive control signal to light the meter indicator is generated, but the turn signal lamp and the meter indicator as vehicle-mounted loads are vehicle-mounted loads with a common attribute that require a cooperative relationship with other lamps, and multiple multiplexes are used. Since they belong to the control units in a distributed manner, the above-mentioned cooperation condition is satisfied.

Therefore, the column switch multiplex control unit 9 is commonly used among the turn signal type lights having the common attribute, which has the blinking cycle of the turn signal lamp and the meter indicator based on the input load drive control signal. A plurality of multiplex control units 3, 7, which are destinations for a predetermined destination of the load drive control signal that is read out of the synchronization signal, and the input synchronization signal that is read out are respectively transmitted through the multiplex signal transmission line 2 and the synchronization signal transmission line 4. 11 respectively.

In response to this, each of the destination multiplex control units 3, 7 and 11 maintains the cooperative relationship with itself and the other multiplex control units, and the blinking cycle timing according to the synchronization signal. The load drive control signal with the common attribute turn signal type lights 13, 1
It supplies to each transistor 15, 19, 23, 27, 31, 35 corresponding to 7, 21, 25, 29, 33 respectively, and the turn signal type lamps 13, 17, of a common attribute.
Each transistor 1 corresponding to 21,25,29,33
5, 19, 23, 27, 31, and 35 are turn signal type lights 13, 17, 21, 21, 25 having a common attribute.
As shown in FIG. 2, drive control is performed on each of 29 and 33 while maintaining synchronization. As a result, among a plurality of vehicle-mounted loads dispersedly arranged in various places of the vehicle, turn signal type lights 13, 17, 21, 2 having a common attribute.
Even when each of 5, 29 and 33 belongs to different multiple control units, it is possible to realize a harmonious drive control of the turn signal type lights and the like as a whole.

As described in detail above, according to the vehicle-mounted load synchronous drive control system according to the present invention, the load drive control signal destined to the load drive control means connected to itself among the multiplex control units is the destination. Each of the multiplex control units receiving the sync signal and the other multiplex control unit maintains the cooperative relationship with itself and other multiplex control units, and at the timing according to the synchronous signal, the load drive control signal corresponds to the in-vehicle load having the common attribute. Each of the load drive control means corresponding to the on-vehicle load having the common attribute drives and controls each of the on-vehicle loads having the common attribute in a state where the synchronization is maintained. Among multiple on-vehicle loads distributed in various places of the vehicle, if each of the on-vehicle loads having the common attribute belongs to different multiple 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 embodiments, but can be carried out 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 synchronous signal transmission line for 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 format, or a composite format of these, an appropriate wiring topology can be adopted.

Further, in the embodiment according to the present invention, the column switch multiple control unit is connected to the column switch as the operation input means, but the present invention is not limited to the above embodiment. Without being limited thereto, it is also possible to adopt a mode in which a plurality of at least one of the operation input means and the load drive control means are connected in a distributed manner to each of the one or more arbitrary multiple control units.

Further, in the embodiment according to the present invention,
Although the turn signal lamp and the meter indicator have been described as an example of the vehicle-mounted load, the present invention is not limited to the example of the above-described embodiment, and the vehicle-mounted load may be, for example, a hazard lamp, a headlight, or a side lamp. For example, any type of vehicle-mounted load used in a vehicle, such as an indoor light, a wheel braking device, or the like, can be adopted. In particular, when the wheel braking device is adopted as the on-vehicle load, the attitude of the host vehicle can be maintained in a stable state and the host vehicle speed can be reduced.

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 synchronization signal destined for the load drive control means connected thereto is the same as that of the multiplex control unit. It is described as a technical idea that the load drive control signal is supplied to the load drive control means corresponding to the in-vehicle load having the common attribute at the timing according to the synchronization signal while maintaining the cooperative relationship with other multiplex control units. However, more specifically, it is a multiplex control unit that receives a load drive control signal and a synchronization signal destined for the load drive control means connected to itself from among a plurality of multiplex control units. The multiplex control unit that functions as a master is subordinate to the multiplex control unit that functions as another slave, and each slave multiplex control unit 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 vehicle-mounted loads dispersedly arranged in various places of the vehicle, each of the vehicle-mounted loads having a common attribute belongs to different multiplex control units. Even in such a case, there is an extremely excellent effect that the drive control of the vehicle-mounted load that is harmonious as a whole can be realized.

[Brief description of drawings]

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

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

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

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

[Description of Codes] 1 vehicle-mounted load synchronous drive control system 2a, 2b, 2c, 2d multiplex signal transmission line 3 front multiplex control units 4a, 4b, 4c, 4d synchronous signal transmission line 5 cowl side multiplex control unit 7 meter multiplex control unit 9 Column switch multiple control unit 11 Rear multiple control unit 13 Front left side (FL) turn signal lamp (vehicle load) 15 First transistor (load drive control means) 17 Front right side (FR) turn signal lamp (vehicle load) 19th 2 transistor (load drive control means) 21 left side (L side) meter indicator (vehicle load) 23 3rd transistor (load drive control means) 25 right side (R side) meter indicator (vehicle load) 27 4th transistor ( Load drive control means) 29 Rear left side (RL) Signal lamp (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 Left turn signal lamp column switch ( Operation input means) 39 Right-hand turn signal lamp column switch (operation input means) B Battery

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) B60R 16/02 660 B60Q 1/00

Claims (4)

(57) [Claims] 1. A plurality of vehicle-mounted loads distributed in various places of a vehicle, a plurality of operation input means provided in association with the plurality of vehicle-mounted loads, and an operation input from the plurality of operation input means. A plurality of load drive control means for driving and controlling each of the plurality of on-vehicle loads, according to a load drive control signal indicating that the plurality of on-vehicle loads are drive-controlled, and the operation input means. Transmitting the multiplexed load drive control signal between a plurality of multiplex control units configured by connecting at least one of the load drive control means in a plurality of distributed connections, respectively. Between the multiple signal transmission lines connected as described above and the plurality of multiplex control units, a synchronization signal shared among the multiple on-vehicle loads having the common attribute is transmitted. Is configured to include a, a synchronization signal transmission line for connection, multi-control unit that inputs the load driving control signal,
The in-vehicle load to be driven has a cooperative relationship with other in-vehicle loads.
In-vehicle load with common attributes required, and multiple control
Content is distributed to each unit and belongs
It is determined whether or not the cooperation condition is satisfied, and if it is determined that the cooperation condition is satisfied, the driving target
The settings are stored in advance for each type of vehicle load.
Read the synchronization signal that is shared between the in-vehicle loads
And outputs the load drive control signal together with the multiple control signals.
Transmitted to the control unit, among the plurality of multiplex control unit, each of the load driving control signal, and a multiplex control unit that has received the synchronization signal to the load drive control means connected to itself and the destination is itself and The load drive control signal is supplied to the load drive control means corresponding to the on-vehicle load having the common attribute at a timing according to the synchronization signal while maintaining a cooperative relationship with other multiplex control units. The in-vehicle load synchronous drive control system, wherein each of the load drive control means corresponding to the in-vehicle load of the attribute drives and controls each of the in-vehicle loads of the common attribute in a state where synchronization is maintained. 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 in-vehicle load synchronous drive control system according to claim 1, wherein the in-vehicle load having the common attribute is a hazard lamp. 4. A multiplex control unit which receives a load drive control signal and a synchronization signal destined for a load drive control means connected to itself among the plurality of multiplex control units, and which serves as any one master. The functioning multiplex control unit maintains the cooperative relationship between itself and other multiplex control units by managing the operation of each slave multiplex control unit under the other multiplex control units functioning as slaves. The vehicle-mounted load synchronous drive control system according to claim 1.