JP5397188B2 - Control device start / stop method, control system, and control device - Google Patents

Description

  The present invention provides a control in a control system in which a plurality of control devices connected to a communication line and a control line are classified into a master that outputs a control signal to the second bus and a slave that inputs a control signal from the second bus. The present invention relates to an apparatus start / stop method, a control system, and a control apparatus.

2. Description of the Related Art In recent years, various electronic devices mounted on a vehicle are controlled by an electronic control unit (ECU), which controls power distribution to the electrical devices. As the functions and performance of vehicles increase, these ECUs tend to increase rapidly.
The ECU is driven by supplying power from a battery. The battery is also used to drive the engine. For this reason, it is necessary to reduce battery consumption of the ECU and the electrical equipment to prevent battery overdischarge (so-called battery exhaustion) as much as possible. In addition, reducing current consumption during travel leads to improved fuel consumption.

For this reason, the in-vehicle ECU has a function of switching to at least two operation states, that is, a wake-up state (normal operation state) that is a high power consumption mode and a sleep state (power saving state) that is a low power consumption mode. ing. When the engine is stopped, such as when the vehicle is parked, the ECU that does not need to be in the wake-up state is switched to the sleep state to reduce the power consumed by the ECU. Conversely, ECUs (power sliding door ECUs, smart entry ECUs, etc.) that do not need to be in a wake-up state when the vehicle is running can switch to a sleep state to reduce current consumption and improve fuel efficiency. Yes.
Switching between the sleep state and the wake-up state is performed simultaneously by each ECU. For example, when the ignition switch is turned off, the sleep state is switched to the sleep state. When the ignition switch is turned on or when the door switch is turned on from the outside of the vehicle by a remote control switch or the like, the wake-up state is switched.

  Patent Document 1 discloses a multiplex transmission apparatus that performs sleep / wake-up transmission using a dedicated line other than a communication line. Each ECU has an output circuit and an input circuit for the dedicated line, and transmits sleep / wake-up to other ECUs by controlling the dedicated line.

  In Patent Document 2, a dedicated wakeup line is provided separately from the communication line, and the bus manager (master ECU) outputs a frequency pulse to the dedicated wakeup line, and each device (slave ECU) outputs the frequency pulse. A method of operating a device connected to a vehicle communication network that is activated upon detection is disclosed. Each device has a frequency filter (band-pass filter), and the bus manager can specify and activate the device by outputting a prescribed frequency pulse.

JP-A-5-58233 Special table 2004-503135 gazette

In the multiplex transmission apparatus disclosed in Patent Document 1, there is a problem that each ECU cannot sleep individually.
In the operation method of the device connected to the vehicle communication network disclosed in Patent Document 2, since the frequency pulse is vulnerable to noise, there is a risk of malfunction in a vehicle where noise frequently occurs. Also, when adding a slave ECU Has a problem that the master ECU needs to be modified to output frequency pulses for the added ECU.
Furthermore, in the multiplex transmission apparatus disclosed in Patent Document 1 and the operation method of the device connected to the vehicle communication network disclosed in Patent Document 2, there is a problem that the slave ECU cannot be activated.

The present invention has been made in view of the above-described circumstances. In the first to third aspects of the invention, each control device can be individually stopped in the control system, is resistant to noise, and is activated from the slave control device. It is an object of the present invention to provide a method for starting / suspending a control device that can be used.
It is an object of the fourth to sixth inventions to provide a control system in which each control device can be individually stopped, is resistant to noise, and can be activated from a slave control device.
It is an object of the seventh to ninth inventions to provide a control device that can be individually stopped in the control system, is resistant to noise, and can be activated by itself.

  According to a first aspect of the present invention, there is provided a method for starting / suspending a control device, wherein a plurality of control devices each having a power supply circuit and connected to a first bus and a second bus are controlled by control signals created internally. Each of the control systems includes a first control device that outputs a control signal to the second bus and a second control device that inputs a control signal from the second bus. In the control device start / stop method for starting / suspending the control device, when starting the second control device, the second control device is started based on a control signal from the second bus, and then the first control device is started. The second control device that determines whether or not to suspend based on the communication signal from the bus, and the second control device that is determined to suspend is the control signal from the second bus and other signals created in the second control device. Based on control signal It rested, when halting the second control device is characterized in that to the second control signal from the bus, and pause, based on the other control signal generated by the second control unit.

  The control device activation / pause method according to the second invention is characterized in that one or a plurality of second control devices output a control signal to the second bus.

  According to a third aspect of the present invention, there is provided a method for starting / suspending a control device, wherein the power supply circuit in the second control device is turned on / off when the second control device is started / paused.

  A control system according to a fourth aspect of the present invention includes a plurality of control devices each having a power supply circuit and controlling devices to be controlled by control signals created therein, a first bus and a second bus connecting the control devices. A first control device having means for outputting a control signal to the second bus, and a second control device having means for inputting a control signal from the second bus. In the control system, the second control device includes a pause unit that pauses based on the control signal from the second bus and another control signal created in the second control device, and the control signal from the second bus. And a means for determining whether or not to suspend based on a communication signal from the first bus after being activated by the activation means, and determined that the means should suspend When the front Characterized in that the rest means is arranged to rest on the basis of the control signal and other control signals from the second bus.

  In the control device activation / deactivation method according to the first invention and the control system according to the fourth invention, each of the plurality of control devices has a power supply circuit, and a device to be controlled by a control signal created inside each control device. Control, the first bus and the second bus connect a plurality of control devices. The control device includes a first control device having means for outputting a control signal to the second bus and a second control device having means for inputting a control signal from the second bus. In the second control device, the pause means pauses based on the control signal from the second bus and other control signals created in the second control device, and the activation means starts based on the control signal from the second bus. To do. After being activated by the activation means, the determination means determines whether or not to pause based on the communication signal from the first bus, and when the determination means determines to pause, the pause means causes the second bus to Pause based on the control signal from and other control signals.

  A control system according to a fifth aspect of the present invention includes one or a plurality of second control devices further including means for outputting a control signal to the second bus.

  In the method for starting / suspending the control device according to the second invention and the control system according to the fifth invention, one or a plurality of second control devices output a control signal to the second bus, so that they can start themselves. It is.

  The control system according to a sixth aspect of the present invention is characterized in that the starting means and the suspending means are configured to turn on / off the power supply circuit in the second control device when starting / suspending.

  In the control device activation / deactivation method according to the third aspect of the invention and the control system according to the sixth aspect of the present invention, the activation unit and the deactivation unit turn on / off the power supply circuit in the second control unit when activating / deactivating.

  A control device according to a seventh aspect of the present invention comprises means for inputting a control signal from the connected second bus connected to the first bus and the second bus, and controlling a device to be controlled by an internally created control signal. In the control device configured to do so, pause means for pausing based on the control signal from the second bus and other control signals created by itself, and starting activated based on the control signal from the second bus And a means for determining whether or not to suspend based on a communication signal from the first bus after being activated by the activating means. According to the present invention, the apparatus is configured to pause based on the control signal and other control signals.

  This control device is connected to the first bus and the second bus, receives a control signal from the connected second bus, and controls a device to be controlled by a control signal created internally. The pause means pauses based on the control signal from the second bus and another control signal created by itself, and the activation means starts based on the control signal from the second bus. After being activated by the activation means, the determination means determines whether or not to pause based on the communication signal from the first bus, and when the determination means determines that it should pause, the pause means determines whether the control signal and Pause based on other control signals.

  The control device according to an eighth aspect of the present invention further comprises means for outputting a control signal to the second bus.

  Since this control device further includes means for outputting a control signal to the second bus, it can be started by itself.

  The control device according to a ninth aspect of the invention is characterized in that the activation means and the suspension means are configured to turn on / off the power supply circuit when starting / suspending.

  In this control device, the activation means and the suspension means turn on / off the power supply circuit when starting / suspending.

  According to the start / stop method of the control device according to the first to third inventions, each control device can be stopped individually in the control system, and since it does not use frequency pulses and frequency filters, it is resistant to noise, and from the slave control device. It is possible to realize a method for starting / suspending the control device that can also be started.

  According to the control system according to the fourth to sixth inventions, each control device can be individually stopped, and since it does not use frequency pulses and frequency filters, it is resistant to noise and can be activated from a slave control device. A system can be realized.

  According to the control devices according to the seventh to ninth aspects of the present invention, it is possible to realize a control device that can be individually stopped in the control system and is resistant to noise because it does not use frequency pulses and frequency filters, and can be started by itself. Can do.

It is a block diagram which shows the principal part structure of embodiment of the starting / suspending method of the control apparatus which concerns on this invention, a control system, and a control apparatus. It is a block diagram which shows the example of an internal structure of slave ECU. It is a timing chart which shows operation of a control system concerning the present invention. It is a block diagram which shows the principal part structure of slave ECU of embodiment of the starting / suspending method of the control apparatus which concerns on this invention, a control system, and a control apparatus. It is a timing chart which shows operation of a control system concerning the present invention. It is a truth table which shows the operation example of slave ECU. It is a block diagram which shows the principal part structure of slave ECU of embodiment of the starting / suspending method of the control apparatus which concerns on this invention, a control system, and a control apparatus. It is a timing chart which shows operation of a control system concerning the present invention. It is a block diagram which shows the principal part structure of embodiment of the starting / suspending method of the control apparatus which concerns on this invention, a control system, and a control apparatus. It is a timing chart which shows operation of a control system concerning the present invention. It is a block diagram which shows the principal part structure of embodiment of the starting / suspending method of the control apparatus which concerns on this invention, a control system, and a control apparatus. It is a timing chart which shows operation of a control system concerning the present invention.

Hereinafter, the present invention will be described with reference to the drawings illustrating embodiments thereof.
(Embodiment 1)
FIG. 1 is a block diagram showing the main configuration of Embodiment 1 of a control device start / stop method, control system, and control device according to the present invention.
In this control system, a master ECU (control device) 1, a slave ECU a (control device) 2, a slave ECU b (control device) 3, and a slave ECU c (control device) 4 connected to a power supply line 7 from a battery are respectively connected to a CAN. (Controller Area Network) communication line (first bus) 6 and wake-up dedicated line (second bus) 5 are bus-connected.

FIG. 2 is a block diagram illustrating an internal configuration example of the slave ECU 8 having the same internal configuration as the slave ECU a2, the slave ECU b3, and the slave ECU c4.
The slave ECU 8 has a power supply line 7 connected to a power supply IC 83. The power supply IC 83 converts the battery voltage to 5V and supplies it to a power supply terminal Vcc of a microcomputer (hereinafter referred to as a microcomputer) 81 and a power supply terminal of the CANIC 82. A CAN communication line 6 (CAN-H, CAN-L) is bus-connected to the CANIC 82, and the CANIC 82 is connected to the microcomputer 81 by two lines.

The output terminal of the AND gate 84 is connected to the interrupt terminal INT of the microcomputer 81. A wakeup dedicated line 5 (second bus) is connected to one input terminal of the AND gate 84 by a bus. A control signal (another control signal) from the control signal output terminal SL of the microcomputer 81 is inverted and input to the other input terminal of the AND gate 84.
The microcomputer 81 includes an I / O port (not shown) that is connected to the control target device of the slave ECU 8 and the like.

The slave ECU a2, the slave ECU b3, and the slave ECU c4 having such an internal configuration operate as shown in the truth table of the ECU A shown in FIG.
That is, when the wakeup signal WK (control signal) output from the master ECU 1 is at L level and the control signal from the control signal output terminal SL of the slave ECU 8 (slave ECU a2 to slave ECU c4) is at H level, the interrupt terminal The input signal to the INT is at the L level, and the slave ECU 8 is in the normal mode (wake-up state). (Pattern 1)

When the wakeup signal WK is at L level and the control signal from the control signal output terminal SL of the slave ECU 8 is at L level, the input signal to the interrupt terminal INT is at L level, and the slave ECU 8 is in the normal mode (wakeup). State). (Pattern 2)
When the wakeup signal WK is at the H level and the control signal from the control signal output terminal SL of the slave ECU 8 is at the H level, the input signal to the interrupt terminal INT is at the L level, and the slave ECU 8 is in the normal mode (wakeup). State). (Pattern 3)

When the wakeup signal WK is at the H level and the control signal from the control signal output terminal SL of the slave ECU 8 is at the L level, the input signal to the interrupt terminal INT is at the H level, and the slave ECU 8 enters the power saving mode (sleep mode). State). (Pattern 4)
Here, when the control signal from the control signal output terminal SL of the slave ECU 8 is at the L level, the slave ECU 8 is set to the sleep state depending on the microcomputer, because the I / O port changes to the input port at the time of sleep. This is because a signal may not be output.

  The internal configuration of the master ECU 1 is the same as the internal configuration of the master ECU 1 shown in FIG. 9, and the power supply line 7 is connected to the power supply IC 13. The power supply IC 13 converts the battery voltage to 5V and supplies it to the power supply terminal Vcc of the microcomputer 11 and the power supply terminal of the CANIC 12. A CAN communication line 6 (CAN-H, CAN-L) is bus-connected to the CANIC 12, and the CANIC 12 is connected to the microcomputer 11 by two lines.

In the microcomputer 11, a wakeup terminal WKm for outputting a wakeup signal WK is connected to the base of an NPN transistor 16 through an inverter 14 and a resistor 15. The emitter of the transistor 16 is grounded, and the collector is connected to the wake-up dedicated line 5 through a 1 kΩ resistor. The wake-up dedicated line 5 is connected to a battery power source through a 100 kΩ pull-up resistor 18. In the case of the first embodiment, these wired AND circuits connected to the wakeup terminal WKm may be omitted.
The microcomputer 11 is connected to an antenna and various switches through an I / O port (not shown).

The operation of the control system having such a configuration will be described below with reference to the timing chart of FIG.
Here, when the master ECU activates the slave ECU, the wakeup signal WK is set to L level, and otherwise, the wakeup signal WK is set to H level.
The slave ECU sets the control signal from the control signal output terminal SL to H level during wakeup, and sets the control signal to L level when the sleep condition is satisfied.

  When all of the slave ECU a2, the slave ECU b3, and the slave ECU c4 are in an operating state (FIG. 3 (a), S4), the master ECU 1 does not cause any of the slave ECUs to wake up (b). The up signal WK is set to H level (c). In the slave ECU a2, the slave ECU b3, and the slave ECU c4, each microcomputer 81 is in a wake-up state (d) (f) (h), and the control signal from the control signal output terminal SL is at the H level (e) (g). (I).

  When all of slave ECUa2, slave ECUb3, and slave ECUc4 are in a stopped state (FIG. 3 (a), S5), there is no factor that causes any of the slave ECUs to wake up (b) in master ECU1. The up signal WK is set to H level (c). In the slave ECU a2, the slave ECU b3, and the slave ECU c4, each microcomputer 81 is in the sleep state (d) (f) (h), and the control signal from the control signal output terminal SL is at the L level (e) (g) ( i).

  When only one of the slave ECU a2, the slave ECU b3, and the slave ECU c4 (for example, the slave ECU a2) is in an operating state (FIG. 3A), in the master ECU 1, the microcomputer 11 puts only the slave ECU a2 into a wake-up state. The cause is detected (b), and the wakeup signal WK is set to L level ((c), S6). Next, the microcomputer 11 transmits a factor for setting the slave ECU a <b> 2 in the wake-up state through the communication line 6.

  When the wake-up signal WK becomes the L level ((c), S6), in the slave ECU a2, the slave ECU b3, and the slave ECU c4, each microcomputer 81 enters the wake-up state ((d), (f), (h), S7). Next, each microcomputer 81 (determining means) sets the control signal from the control signal output terminal SL to the H level, acquires a factor that causes the slave ECU to wake up by the communication line 6, and the factor relates to itself. ((E) (g) (i), S8).

The microcomputer 81 of the slave ECU (slave ECU a2 in this case) that caused the wake-up state to be related to itself continues to set the control signal from the control signal output terminal SL to the H level (e) and changes the wake-up state. Continue ((d), S9). Next, the fact that the factor has been confirmed is transmitted to the master ECU 1 via the communication line 6 (S10).
The microcomputer 81 of the slave ECU (slave ECU b3, slave ECU c4 in this case) whose cause of the wake-up state is not related to itself sets the control signal from the control signal output terminal SL to the L level ((g) (i ), S9). Next, the fact that the factor has been confirmed is transmitted to the master ECU 1 via the communication line 6 (S10).

In the master ECU 1, the microcomputer 11 receives from the slave ECU a2, the slave ECU b3, and the slave ECU c4 a signal confirming the cause through the communication line 6, and then sets the wake-up signal WK to the H level ((c), S11).
When the wakeup signal WK becomes H level ((c), S11), the microcomputer 81 of the slave ECU a2 continues to set the control signal from the control signal output terminal SL to H level (e) and continues the wakeup state ( (D), S12).
When the wakeup signal WK becomes H level ((c), S11), the microcomputers 81 of the slave ECU b3 and slave ECU c4 again enter the sleep state ((f) (h), S12).

  When all of the slave ECUs a 2, b 3, and c 4 are in a stopped state (FIG. 3A), the master ECU 1 does not cause any of the slave ECUs to wake up (b), and the wake-up signal Set WK to H level (c). In the slave ECU a2, the slave ECU b3, and the slave ECU c4, each microcomputer 81 is in the sleep state (d) (f) (h), and the control signal from the control signal output terminal SL is at the L level (e) (g) ( i).

(Embodiment 2)
FIG. 4 is a block diagram showing the main configuration of the slave ECU according to the second embodiment of the control device start / stop method, control system, and control device according to the present invention.
The configuration example of this control system is the same as the block diagram showing the main configuration of the first embodiment in FIG. 1, and the internal configuration examples of the slave ECU a2, the slave ECU b3, and the slave ECU c4 shown in FIG. 1 are shown in FIG. It is the same as ECUB9.

  In the ECU B 9, the power supply line 7 is connected to the power supply IC 93. The power supply IC 93 converts the battery voltage to 5V and supplies it to the power supply terminal Vcc of a microcomputer (hereinafter referred to as a microcomputer) 91 and the power supply terminal of the CANIC 92. A CAN communication line 6 (CAN-H, CAN-L) is bus-connected to the CANIC 92, and the CANIC 92 is connected to the microcomputer 91 with two lines.

The output terminal of the AND gate 94 is connected to the control terminal INH of the power supply IC 93. A wakeup dedicated line 5 is connected to one input terminal of the AND gate 94 by bus. A control signal from the control signal output terminal SL of the microcomputer 91 is inverted and input to the other input terminal of the AND gate 94. The AND gate 94 is connected to a power supply (not shown) other than the power supply IC 93.
The microcomputer 91 includes an I / O port (not shown) that is connected to a control target device of the ECU B9.

The slave ECU a2, the slave ECU b3, and the slave ECU c4 having such an internal configuration operate as shown in the truth table of the ECUB shown in FIG.
That is, when the wake-up signal WK output from the master ECU 1 is at L level and the control signal from the control signal output terminal SL of the ECU B9 (slave ECU a2 to slave ECU c4) is at H level, the input signal to the control terminal INH is At the L level, the ECUB9 is supplied with 5V power from the power supply IC93. (Pattern 1)

When the wakeup signal WK is at L level and the control signal from the control signal output terminal SL of the ECU B9 is at L level, the input signal to the control terminal INH is at L level, and the ECUB9 is supplied with 5V power from the power supply IC93. Supplied. (Pattern 2)
When the wakeup signal WK is at the H level and the control signal from the control signal output terminal SL of the ECU B9 is at the H level, the input signal to the control terminal INH is at the L level, and 5V power is supplied to the ECU B9 from the power supply IC93. Is done. (Pattern 3)

When the wake-up signal WK is at H level and the control signal from the control signal output terminal SL of the ECU B9 is at L level, the input signal to the control terminal INH is at H level, and the 5V power supply from the power supply IC 93 to the ECU B9 is Blocked. (Pattern 4)
Other configurations of the control system and the control device of the second embodiment are the same as those of the control system and the control device of the first embodiment described above, and thus the description thereof is omitted.

The operation of the control system having such a configuration will be described below with reference to the timing chart of FIG.
Here, when the master ECU activates the slave ECU, the wakeup signal WK is set to L level, and otherwise, the wakeup signal WK is set to H level.
The slave ECU sets the control signal from the control signal output terminal SL to the H level when it is on, and sets the control signal to the L level when the condition for turning off is satisfied.

  When all of the slave ECU a2, the slave ECU b3, and the slave ECU c4 are on (FIG. 5A), the microcomputer 11 of the master ECU 1 sets the wakeup signal WK to the H level (b). In the slave ECU a2, the slave ECU b3, and the slave ECU c4, each microcomputer 81 sets the control signal from the control signal output terminal SL to the H level (c), (e), and (g), and the 5V power supply from the power supply IC 93 is on, respectively. (D) (f) (h).

  When all of the slave ECU a2, the slave ECU b3, and the slave ECU c4 are off (a), the microcomputer 11 of the master ECU 1 sets the wakeup signal WK to the H level (b). In the slave ECU a2, the slave ECU b3, and the slave ECU c4, each microcomputer 81 sets the control signal from the control signal output terminal SL to the L level (c), (e), and (g), and the 5V power supply from the power supply IC 93 is off. (D) (f) (h).

  When any one of the slave ECU a2, the slave ECU b3, and the slave ECU c4 (for example, the slave ECU a2 and the slave ECU b3) is turned on (a), in the master ECU 1, the microcomputer 11 detects a factor that turns on the slave ECU a2 and the slave ECU b3. Then, the wakeup signal WK is set to L level (b). Next, the microcomputer 11 transmits a factor for turning on the slave ECU a <b> 2 and the slave ECU b <b> 3 through the communication line 6.

  When the wakeup signal WK becomes L level (b), the slave ECU a2, the slave ECU b3, and the slave ECU c4 turn on the 5V power from the power supply IC 93 (d), (f), and (h). Next, each microcomputer 91 sets the control signal from the control signal output terminal SL to the H level (c), (e), and (g), acquires a factor for turning on the slave ECU through the communication line 6, and the factor is itself It is determined whether it is related.

The microcomputer 91 of the slave ECU (slave ECU a2, slave ECU b3 in this case) that caused the slave ECU to turn on continues to set the control signal from the control signal output terminal SL to the H level (c) ( e) Continue the ON state of the 5V power supply from the power supply IC 93 (d) (f). Next, the fact that the factor has been confirmed is transmitted to the master ECU 1 via the communication line 6.
The microcomputer 91 of the slave ECU (slave ECU c4 in this case) whose cause for turning on the slave ECU does not relate to itself sets the control signal from the control signal output terminal SL to L level (g). Next, the fact that the factor has been confirmed is transmitted to the master ECU 1 via the communication line 6.

In the master ECU 1, the microcomputer 11 receives from the slave ECU a2, the slave ECU b3, and the slave ECU c4 a signal confirming the cause through the communication line 6, and then sets the wakeup signal WK to the H level (b).
When the wakeup signal WK becomes H level (b), the microcomputers 91 of the slave ECU a2 and slave ECU b3 continuously set the control signal from the control signal output terminal SL to H level (c) and (e), and 5 V from the power supply IC 93 The power-on state is continued (d) (f).
In the slave ECU c4, when the wakeup signal WK becomes H level (b), the 5V power supply from the power supply IC 93 is turned off again (h).

  When the slave ECU b3 and the slave ECU c4 are turned off from the state where the slave ECU a2 and the slave ECU b3 are turned on (a), the microcomputer 91 of the slave ECU b3 sets the control signal from the control signal output terminal SL to the L level (e ). As a result, the 5V power supply from the power supply IC 93 of the slave ECU b3 is turned off (f).

  When all of the slave ECU a2, the slave ECU b3, and the slave ECU c4 are off (a), in the master ECU 1, the wakeup signal WK is at the H level (b). In the slave ECU a2, the slave ECU b3, and the slave ECU c4, in each microcomputer 91, the control signal from the control signal output terminal SL is L level (c) (e) (g). Accordingly, the 5V power supply from each power supply IC 93 of the slave ECU a2, the slave ECU b3, and the slave ECU c4 is off (d), (f), and (h).

(Embodiment 3)
FIG. 7 is a block diagram showing the main configuration of the slave ECU according to the third embodiment of the control device start / stop method, control system, and control device according to the present invention.
The configuration example of this control system is the same as the block diagram showing the main configuration of the first embodiment of FIG. 1, and the internal configuration example of the slave ECU a2 shown in FIG. 1 is the same as the ECU 10 shown in FIG. An example of the internal configuration of the slave ECU b3 shown in FIG. 1 is the same as that of the ECU B9 shown in FIG.

In the ECU 10, the power supply line 7 is connected to the power supply IC 938. The power supply IC 93 converts the battery voltage to 5V and supplies it to the power supply terminal Vcc of the microcomputer 101 and the power supply terminal of the CANIC 92. A CAN communication line 6 (CAN-H, CAN-L) is bus-connected to the CANIC 92, and the CANIC 92 is connected to the microcomputer 101 with two lines.
The output terminal of the AND gate 94 is connected to the control terminal INH of the power supply IC 93. A wakeup dedicated line 5 is connected to one input terminal of the AND gate 94 by bus. A control signal from the control signal output terminal sl of the microcomputer 101 is inverted and input to the other input terminal of the AND gate 94. The AND gate 94 is connected to a power supply (not shown) other than the power supply IC 93.

In the microcomputer 101, a wakeup terminal wk for outputting a wakeup signal WK is connected to the base of an NPN transistor 97 through a resistor 96. The emitter of the transistor 97 is grounded, and the collector is connected to the wakeup dedicated line 5 through a 1 kΩ resistor 98. These wired AND circuits cooperate with the wired AND circuit of the master ECU 1 described above.
The microcomputer 101 also includes an I / O port (not shown) that is connected to a control target device of the ECU 10 and the like.
Other configurations of the control system and the control device of the third embodiment are the same as the configurations of the control system and the control device of the above-described first embodiment, and thus description thereof is omitted.

The operation of the control system having such a configuration will be described below with reference to the timing chart of FIG.
Here, when the master ECU activates the slave ECU, the wakeup signal WK is set to L level, and otherwise, the wakeup signal WK is set to H level.
The slave ECU sets the control signal from the control signal output terminal SL to the H level when it is on, and sets the control signal to the L level when the condition for turning off is satisfied.

When all of the slave ECU a2, the slave ECU b3, and the other slave ECUs are on (FIG. 8A), the microcomputer 11 of the master ECU 1 sets the signal from the wake-up terminal WKm to the H level (b).
In the slave ECU a2, the microcomputer 101 sets the signal from the wakeup terminal wk to L level (c), sets the control signal from the control signal output terminal sl to H level (d), and the 5V power from the power supply IC 93 is Is on (e). The wakeup signal WK is at the H level (h) by the signals from the wakeup terminals WKm and wk.
In the slave ECU b3, the microcomputer 91 sets the control signal from the control signal output terminal SL to the H level (f), and the 5V power supply from the power supply IC 93 is turned on (g).

When all of the slave ECU a2, the slave ECU b3, and the other slave ECUs are off (a), the microcomputer 11 of the master ECU 1 sets the signal from the wake-up terminal WKm to the H level (b).
In the slave ECU a2, the microcomputer 101 indicates that the signal from the wakeup terminal wk is L level (c), the control signal from the control signal output terminal sl is also L level (d), and the 5V power from the power supply IC 93 is It is off (e). The wakeup signal WK is at the H level (h) by the signals from the wakeup terminals WKm and wk.
In the slave ECU b3, the microcomputer 91 sets the control signal from the control signal output terminal SL to the L level (f), and the 5V power supply from the power supply IC 93 is turned off (g).

When only the slave ECU a2 is turned on (a), in the master ECU 1, the microcomputer 11 detects a factor that turns on the slave ECU a2, and sets the signal from the wake-up terminal WKm to the L level (b). As a result, the wakeup signal WK also becomes L level (h). Next, the microcomputer 11 transmits a factor for turning on the slave ECU a <b> 2 through the communication line 6.
When the wakeup signal WK becomes L level (h), the slave ECU a2 turns on the 5V power supply from the power supply IC 93 (e). Next, the microcomputer 101 sets the control signal from the control signal output terminal sl to the H level (d). Next, a factor for turning on the slave ECU is acquired by the communication line 6, and it is determined whether or not the factor relates to itself.

  When the wakeup signal WK becomes L level (h), the slave ECU b3 turns on the 5V power supply from the power supply IC 93 (g). Next, the microcomputer 91 sets the control signal from the control signal output terminal SL to the H level (f), acquires a factor for turning on the slave ECU through the communication line 6, and determines whether the factor is related to itself. To do.

The microcomputer 101 of the slave ECU a2 that has caused the slave ECU to turn on continues to set the control signal from the control signal output terminal sl to the H level (d). Thereby, the ON state of the 5V power supply from the power supply IC 93 is continued (e), and then the fact that the cause is confirmed is transmitted to the master ECU 1 through the communication line 6.
The microcomputer 91 of the slave ECU c4 that did not turn on the slave ECU causes the control signal from the control signal output terminal SL to be L level (f). Next, the fact that the factor has been confirmed is transmitted to the master ECU 1 via the communication line 6.

In the master ECU 1, the microcomputer 11 receives signals from the slave ECU a2, the slave ECU b3, and other slave ECUs confirming the cause through the communication line 6, and then sets the signal from the wake-up terminal WKm to the H level. (B). As a result, the wake-up signal WK also becomes H level (h).
When the wakeup signal WK becomes H level (b), the microcomputer 101 of the slave ECU a2 continues to set the control signal from the control signal output terminal sl to H level (d), and continues the ON state of the 5V power supply from the power supply IC 93. (E).
When the wakeup signal WK becomes H level (h), the microcomputer 91 of the slave ECU b3 turns off the 5V power supply from the power supply IC 93 again (g).

When the slave ECU a2 activates the slave ECU b3 from the state in which the slave ECU a2 is on (a), the microcomputer 101 of the slave ECU a2 detects a factor that turns on the ECU b3 and sets the signal from the wake-up terminal wk to the H level. (C). As a result, the wakeup signal WK becomes L level (h). Next, the microcomputer 101 transmits a factor for turning on the slave ECU b <b> 3 through the communication line 6.
When the wakeup signal WK becomes L level (h), the slave ECU b3 turns on the 5V power supply from the power supply IC 93 (g). Next, the microcomputer 91 sets the control signal from the control signal output terminal SL to the H level (f), acquires a factor for turning on the slave ECU through the communication line 6, and determines whether the factor is related to itself. To do.

The microcomputer 91 of the slave ECU b3 that has caused the slave ECU to turn on continues to set the control signal from the control signal output terminal SL to the H level (f). Thereby, the ON state of the 5V power supply from the power supply IC 93 is continued (g), and then the fact that the cause is confirmed is transmitted to the slave ECU a2 via the communication line 6.
The microcomputer 91 of the other slave ECUs whose factors for turning on the slave ECU did not relate to itself set the control signal from the control signal output terminal SL to the L level, and then confirmed that the cause was confirmed by the communication line 6. It transmits to slave ECUa2.

In the slave ECU a2, the microcomputer 101 receives a signal confirming the cause from the slave ECU b3 and other slave ECUs via the communication line 6, and then sets the signal from the wake-up terminal wk to the L level (c). . As a result, the wakeup signal WK becomes H level (h).
When the wakeup signal WK becomes H level (h), the microcomputer 91 of the slave ECU b3 continuously sets the control signal from the control signal output terminal SL to H level (f), and continues the ON state of the 5V power supply from the power supply IC 93. (G).
The microcomputers 91 of other slave ECUs turn off the 5V power supply from the power supply IC 93 again when the wakeup signal WK becomes H level.

When all of slave ECU a2, slave ECU b3, and other slave ECUs are off (a), in master ECU 1, the signal from wake-up terminal WKm is at the H level (b). In the slave ECU a2, the slave ECU b3, and the other slave ECUs, each microcomputer sets the control signal from the control signal output terminal to the L level (d) (f). Accordingly, the 5V power supply from each power supply IC 93 of the slave ECU a2, the slave ECU b3, and the other slave ECUs is turned off (e) and (g).
Since the signal from the wakeup terminal WKm is at H level (b) and the signal from the wakeup terminal wk of the microcomputer 101 of the slave ECU a2 is at L level (c), the wakeup signal WK is at H level (h ).

(Embodiment 4)
FIG. 9 is a block diagram showing a main configuration of the fourth embodiment of the control device start / stop method, control system, and control device according to the present invention.
This control system is mounted on a vehicle, and a master ECU (control device) 1, a body ECU A (control device) 8a, and a seat ECU B (control device) 9a connected to a power line 7 from a battery are respectively used for CAN. The communication line 6 and the dedicated wake-up line 5 are bus-connected. The master ECU 1 is a smart entry ECU for remotely operating a door key.

  The body ECU A 8 a can be activated by itself from the sleep state, and the power line 7 is connected to the power IC 83. The power supply IC 83 converts the battery voltage to 5V and supplies it to the power supply terminal Vcc of the microcomputer 81a and the power supply terminal of the CANIC 82. A CAN communication line 6 (CAN-H, CAN-L) is bus-connected to the CANIC 82, and the CANIC 82 is connected to the microcomputer 81a by two lines.

The output terminal of the AND gate 84 is connected to the interrupt terminal INT of the microcomputer 81a. The wake-up dedicated line 5 is connected to one input terminal of the AND gate 84 by a bus. A control signal from the control signal output terminal SL of the microcomputer 81 a is inverted and input to the other input terminal of the AND gate 84.
The microcomputer 81 a includes a wake-up terminal WKs that outputs a wake-up signal WK. The wake-up terminal WKs is connected to the base of the NPN transistor 87 through a resistor 86. The emitter of the transistor 87 is grounded, and the collector is connected to the wakeup dedicated line 5 through a 1 kΩ resistor 88.

The microcomputer 81a includes an I / O port (not shown) that is connected to a driver seat door courtesy and various switches that are controlled devices of the body ECU A8a.
Since the internal configuration example of the master ECU 1 has been described in the first embodiment, the description thereof is omitted here. An example of the internal configuration of the seat ECU B9a is the same as the internal configuration of the ECU B9 (FIG. 4) described in the second embodiment, and a description thereof will be omitted.

The operation of the control system having such a configuration will be described below with reference to the timing chart of FIG.
When the vehicle is parked with the engine off and the driver is away from the vehicle (S20), the smart entry ECU (master ECU) 1 is operating and the signal output from the wake-up terminal WKm of the microcomputer 11 is It is at the H level (FIG. 10A).
The microcomputer 81a of the body ECU A8a is in the sleep state (b), the control signal from the control signal output terminal SL is at L level (c), and the signal output from the wakeup terminal WKs is at L level (d).
The microcomputer 91 of the seat ECU B9a is in the sleep (power supply IC 93 off) state (e), and the control signal from the control signal output terminal SL is at the L level (f).
The wakeup signal WK is at the H level (g) due to the signal output from the wakeup terminals WKm and WKs.

When the microcomputer 11 of the smart entry ECU 1 detects that the driver has approached (S21), the smart entry ECU 1 sets the signal output from the wake-up terminal WKm to L level (a).
As a result, the wakeup signal WK also becomes L level (g), the microcomputer 81a of the body ECU A8a enters the wakeup state (b), and the control signal from the control signal output terminal SL becomes H level (c). The signal output from the wake-up terminal WKs remains at the L level (d).
The microcomputer 91 of the seat ECU B9a enters the wake-up (power supply IC 93 ON) state (e), and the control signal from the control signal output terminal SL becomes the H level (f).

Next, the microcomputer 11 of the smart entry ECU 1 notifies the microcomputer 81a of the body ECU A8a and the microcomputer 91 of the seat ECU B9a via the communication line 6 that the driver has approached (S23).
As a result, the microcomputer 81a of the body ECU A8a continues to be in a wake-up state in preparation for a person to get on (b), the control signal from the control signal output terminal SL is also kept at the H level (c), and the wake-up terminal WKs is The output wakeup signal WK is also kept at the L level ((d), S24). Next, a message indicating that the driver has approached the vehicle is returned to the smart entry ECU 1 via the communication line 6.

  Since the microcomputer 91 of the seat ECU B9a is not related to the person getting on, the control signal from the control signal output terminal SL is set to the L level ((f) although it is in the wake-up (power supply IC 93 ON) state (e). ), S24). Next, a message indicating that the driver has approached the vehicle is returned to the smart entry ECU 1 via the communication line 6.

  When the microcomputer 11 of the smart entry ECU 1 receives a reply from the microcomputer 81a of the body ECU A8a and the microcomputer 91 of the seat ECU B9a that it has confirmed that the driver has approached, the signal output from the wake-up terminal WKm is H. The level is set ((a), S25). As a result, the wakeup signal WK also becomes H level (g), and the microcomputer 91 of the seat ECU B9a enters the sleep (power supply IC 93 off) state (e).

When the microcomputer 81a of the body ECU A8a detects that the driver has opened the driver's seat door (S26), the microcomputer 81a sets the signal output from the wake-up terminal WKs to the H level ((d), S27).
As a result, the wakeup signal becomes L level (g), the microcomputer 91 of the seat ECU B9a enters the wakeup (power supply IC 93 ON) state (e), and the control signal from the control signal output terminal SL becomes H level ( f).

Next, the microcomputer 81a of the body ECU A8a notifies the microcomputer 91 of the seat ECU B9a via the communication line 6 that the driver has opened the driver's seat door (S28).
As a result, the microcomputer 91 of the seat ECU B9a enters the wake-up (power supply IC 93 on) state in preparation for the operation of the memory seat ((e), S29), and sets the control signal from the control signal output terminal SL to the H level. (F). Next, the fact that the driver has confirmed that the driver's seat door has been opened is sent back to the microcomputer 81a of the body ECU A8a via the communication line 6.

  When the microcomputer 81a of the body ECU A8a receives a reply from the microcomputer 91 of the seat ECU B9a that the driver has confirmed that the driver's seat door has been opened, the signal output from the wake-up terminal WKs is set to L level ((d ), S30). As a result, the wakeup signal WK becomes H level (g), and the microcomputer 91 of the seat ECU B9a enters the wakeup (power supply IC 93 on) state (e).

(Embodiment 5)
FIG. 11 is a block diagram showing the main configuration of Embodiment 5 of the control device start / stop method, control system, and control device according to the present invention.
This control system is mounted on a vehicle. A master ECU (control device) 1, a seat ECU B (control device) 9a, and a power slide door ECU B (control device) 9b connected to a power line 7 from a battery are respectively provided. The CAN communication line 6 and the wake-up dedicated line 5 are bus-connected. The master ECU 1 is a body ECU 1.
Since the internal configuration example of the master ECU 1 has been described in the first embodiment, the description thereof is omitted here. Further, the internal configuration examples of the seat ECU B9a and the power slide door ECU B9b are the same as the internal configuration of the ECU B9 (FIG. 4) described in the second embodiment, and thus description thereof is omitted.

The operation of the control system having such a configuration will be described below with reference to the timing chart of FIG.
In this control system, when the body ECU 1 determines that the vehicle is traveling, the signal output from the wake-up terminal WKm is set to L level (a). As a result, the wake-up signal WK also becomes L level (d) and (g), and the microcomputers 91 of the seat ECU B9a and the power slide door ECU B9b enter the wake-up state (b) and (e), respectively, from the control signal output terminal SL. (C) and (f).
In this state, the body ECU 1 notifies the power slide door ECU B9b and the seat ECU B9a via the communication line 6 that it is determined that the vehicle is in a traveling state.

Upon receipt of the notification, the power slide door ECU B9b and the seat ECU B9a confirm that the power slide door ECU B9b and the seat ECU B9a are not in operation, return to the body ECU 1 that they can be stopped, and send the control signal from the control signal output terminal SL to the L level. (C) and (f).
When the body ECU 1 receives the reply, the signal output from the wakeup terminal WKm is set to H level (a), and the wakeup signal WK is also set to H level (d) (g). Thereby, each microcomputer 91 of seat ECUB9a and power slide door ECUB9b will be in a sleep state (b) and (e), and cut | disconnect each consumption current of seat ECUB9a and power slide door ECUB9b which are inactive, while a vehicle is drive | working. This can lead to improved fuel economy.

When the body ECU 1 determines that the vehicle is in a stopped state, the body ECU 1 sets the signal output from the wake-up terminal WKm to L level (a). As a result, the wake-up signal WK also becomes L level (d) and (g), and the microcomputers 91 of the seat ECU B9a and the power slide door ECU B9b enter the wake-up state (b) and (e), respectively, from the control signal output terminal SL. (C) and (f).
In this state, the body ECU 1 notifies the power slide door ECU B9b and the seat ECU B9a via the communication line 6 that the vehicle has been determined to be stopped.

The power sliding door ECU B9b and the seat ECU B9a receive the notification and return to the body ECU 1 that the stop state notification has been received, and maintain the control signal from the control signal output terminal SL at the H level (c) (f) .
When the body ECU 1 receives the reply, the signal output from the wakeup terminal WKm is set to H level (a), and the wakeup signal WK is also set to L level (d) (g). Thereby, each microcomputer 91 of seat ECUB9a and power slide door ECUB9b continues a wake-up state (b) (e).

1 Master ECU (control device, smart entry ECU, body ECU)
2 Slave ECUa (control device)
3 Slave ECUb (control device)
4 Slave ECUc (control device)
5 Wake-up dedicated line (second bus)
6 Communication line (1st bus)
7 Power line 8 Slave ECU
8a Body ECUA (control device)
9 ECUB
9a Seat ECUB (control device)
9b Power sliding door ECUB (control device)
10 ECU
11, 81, 81a, 91, 101 Microcomputer
12, 82, 92, CANIC
13, 83, 93 Power IC
84,94 AND gate

Claims (9)

A plurality of control devices each having a power supply circuit and connected to each of the first bus and the second bus control devices to be controlled by control signals created inside, respectively. Control device start / stop method for starting / suspending each control device of a control system including a first control device that outputs a control signal to two buses and a second control device that inputs a control signal from the second bus In
When activating the second control device, each second control device is activated based on a control signal from the second bus, and then determines whether or not to pause based on a communication signal from the first bus. When the second control device that has been determined to be paused pauses based on the control signal from the second bus and other control signals created in the second control device, and pauses the second control device. A control device activation / pause method, comprising: making a pause based on a control signal from the second bus and another control signal created in the second control device.   The method of starting / suspending a control device according to claim 1, wherein the one or more second control devices output a control signal to the second bus.   The method for starting / suspending a control device according to claim 1, wherein the power supply circuit in the second control device is turned on / off when the second control device is started / paused. Each of the control devices includes a plurality of control devices each having a power supply circuit and controlling a device to be controlled by a control signal created therein, and a first bus and a second bus connecting the control devices. Is a control system including a first control device having means for outputting a control signal to the second bus and a second control device having means for inputting a control signal from the second bus.
The second control device includes a pause unit that pauses based on the control signal from the second bus and other control signals created in the second control device, and an activation that starts based on the control signal from the second bus. And a means for determining whether or not to suspend based on a communication signal from the first bus after being activated by the activating means. The control system is configured to pause based on the control signal from the second bus and other control signals by means.   The control system according to claim 4, further comprising one or a plurality of second control devices further including means for outputting a control signal to the second bus.   The control system according to claim 4, wherein the activation unit and the suspension unit are configured to turn on / off a power supply circuit in the second control device when starting / suspending. A control device that is connected to the first bus and the second bus and includes means for inputting a control signal from the connected second bus, and is configured to control a device to be controlled by a control signal created internally. In
After activating by the activating means, the suspending means for suspending based on the control signal from the second bus and other control signals created by itself, the activating means activated based on the control signal from the second bus, And a means for determining whether or not to pause based on a communication signal from the first bus, and when the means determines to pause, the pause signal causes the control signal and other control signals to be A control device characterized in that it is configured to pause based on the above.   The control device according to claim 7, further comprising means for outputting a control signal to the second bus.   8. The control apparatus according to claim 7, wherein the activation unit and the suspension unit are configured to turn on / off the power supply circuit when starting / suspending.

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