JP2019067081A - Electronic control device and power supply device - Google Patents

Abstract

To provide a technology capable of quickly interrupting power supply to a computing device in which latch-up has occurred among a plurality of computing devices.SOLUTION: An electronic control device 11 comprises a plurality of computing devices U1 to UN, and a power supply device 13 for supplying power to the computing devices U1 to UN. A shutoff control circuit 17 provided in the power supply device 13, which functions as a detection unit and a shutoff control unit. The detection unit detects, among the plurality of computing devices U1 to UN, a current increasing device that is a computing device having a larger consumption current than the other computing devices by a predetermined value or more. The shutoff control unit shuts off the power supply to the current increasing device detected by the detection unit for a predetermined time.SELECTED DRAWING: Figure 1

Description

  The present disclosure relates to an electronic control device and a power supply device.

  In an electronic control device for automotive applications and the like, in order to prevent erroneous control, a configuration is adopted in which arithmetic devices for performing processing for control are made redundant. Here, redundancy means that the same processing is performed by the same hardware. Further, since the arithmetic device is formed of a semiconductor integrated circuit, latch-up may occur.

  In Patent Document 1, as a technique for preventing a malfunction due to latch-up of an arithmetic device, among a plurality of arithmetic devices, an arithmetic device in which latch-up occurs is detected, and power supply to the detected arithmetic device is interrupted for a predetermined time To be, is described. Specifically, in the technique of Patent Document 1, the current (that is, consumption current) flowing to each of the plurality of arithmetic devices is monitored, and latch-up occurs in the arithmetic device in which the consumption current is equal to or more than a predetermined threshold. It is detected as an arithmetic unit.

Unexamined-Japanese-Patent No. 3-212743

  However, in the technique of Patent Document 1, the fact that the consumption current of the arithmetic device is equal to or more than the threshold value is regarded as the occurrence of latch-up, so the interruption of the power supply to the arithmetic device where the latch-up occurs is delayed. . The threshold is a fixed threshold for latch-up determination, and needs to be set to a value sufficiently larger than the maximum value of the normal current consumption. For this reason, it is easy to cause an event that latch-up is not detected, that is, the power supply is interrupted, only after the consumption current of the arithmetic device in which latch-up has occurred is considerably increased.

  Then, if the interruption of the power supply to the arithmetic device in which the latch-up occurs is delayed, the operation of the other arithmetic devices in which the latch-up does not occur can be inhibited by the temperature rise and the decrease in the power supply voltage. Sex is increased.

  Thus, the present disclosure provides a technique capable of rapidly interrupting power supply to an arithmetic device in which latch-up has occurred among a plurality of arithmetic devices.

  The electronic control unit of the present disclosure includes a plurality of arithmetic units (U1 to UN) and a power supply unit (13) that supplies power to the plurality of arithmetic units. And a power supply device is provided with a detection part (17, S110-S130, S150, S210-S230) and a cutoff control part (17, S140, S160, S240, S250).

  The detection unit detects, among the plurality of arithmetic devices, a current increasing device that is an arithmetic device that consumes a current larger than a predetermined value than another arithmetic device. Then, the shutoff control unit shuts off the power supply to the current increasing device detected by the detection unit for a predetermined time.

If the plurality of arithmetic devices are normal, the consumption current of each arithmetic device will be the same value. On the other hand, when latch-up occurs in any of the arithmetic devices, the consumption current of the arithmetic device in which the latch-up occurs (hereinafter, latch-up generation device) becomes larger than the consumption current of the other arithmetic devices. Then, when the consumption current of the latch-up generation device is larger than the consumption current of the other arithmetic devices, the latch-up generation device is detected by the detection unit as the current increase device. Then, the power supply to the latch-up generation device is cut off for a predetermined time, and the normal recovery of the latch-up generation device is attempted.

  According to such a configuration, when the consumption current of the latch-up generation device becomes larger than the consumption current of the other arithmetic devices, not later than the fixed threshold for latch-up determination, the latch The power supply to the power-up generator is cut off for a predetermined time. Therefore, when latch-up occurs in any of the arithmetic devices, it becomes possible to cut off the power supply to the arithmetic devices promptly.

Further, the power supply device of the present disclosure includes a plurality of output lines (L1 to LN) for supplying power to a plurality of arithmetic devices (U1 to UN), and detection units (17, S110 to S130, S150, S210 to S230. And a shutoff control unit (17, S140, S160, S240, S250).
The detection unit detects, among the plurality of output lines, a current increase line which is an output line in which the conduction current, which is the current flowing, is larger than a predetermined value, than the other output lines. Then, the shutoff control unit shuts off the current increase line detected by the detection unit for a predetermined time.

  The conduction current of each output line corresponds to the consumption current of each arithmetic device to which power is supplied by each output line. Therefore, in the power supply device of the present disclosure, the detection unit detecting the current increase line is equivalent to the detection unit of the electronic control device of the present disclosure detecting the current increase device. Then, in the power supply device of the present disclosure, the cutoff control unit interrupting the current increase line detected by the detection unit for a predetermined period of time corresponds to the current detected by the detection unit of the cutoff control unit in the electronic control device of the present disclosure. It is equivalent to shutting off the power supply to the increasing device for a predetermined time.

  Therefore, the power supply device of the present disclosure can be used as a power supply device in the electronic control device of the present disclosure. And according to the power supply device of the present disclosure, the same effects as the effects described for the electronic control device of the present disclosure are obtained.

  In addition, the reference numerals in parentheses described in this column and the claims indicate the correspondence with specific means described in the embodiment described later as one aspect, and the technical scope of the present disclosure It is not limited.

It is a block diagram showing composition of an electronic control unit of a 1st embodiment. It is a flowchart of interruption | blocking control processing of 1st Embodiment. It is a flowchart of interruption | blocking control processing of 2nd Embodiment.

Hereinafter, embodiments of the present disclosure will be described with reference to the drawings.
[1. First embodiment]
[1-1. Constitution]
An electronic control unit (hereinafter, ECU) 11 according to the first embodiment shown in FIG. 1 includes a plurality of arithmetic devices U1 to UN and a power supply device 13 for supplying power to the arithmetic devices U1 to UN. ECU is an abbreviation of "Electronic Control Unit".

In the present embodiment, the number of arithmetic units U1 to UN is three or more. And "UN" etc.
The second character “N” of the code beginning with an alphabet and “N” in the following description are integers the same as the number of arithmetic devices U1 to UN. The number of arithmetic units may be two.

  Arithmetic units U1 to UN are microcomputers having the same hardware. The same control information is input to the arithmetic devices U1 to UN, for example, as control information for controlling an engine in a vehicle. The arithmetic devices U1 to UN perform the same process as the process for controlling the engine.

  In the ECU 11, the N processing results by each of the arithmetic devices U1 to UN are used, for example, for control of the engine by majority decision. Assuming that any integer from 1 to N is “n”, in FIG. 1, the processing result by the arithmetic device Un is described as “nth output”.

  The power supply device 13 is provided corresponding to each of the arithmetic devices U1 to UN, and a power supply circuit 15 that generates a constant power supply voltage from the voltage of the vehicle battery (that is, battery voltage) VB and outputs the power supply voltage VD. And N output lines L1 to LN.

The output lines L1 to LN supply power to the arithmetic devices U1 to UN by supplying the power supply voltage VD output from the power supply circuit 15 to the arithmetic devices U1 to UN.
Furthermore, the power supply device 13 includes N measurement circuits M1 to MN, N cutoff circuits C1 to CN, and a cutoff control circuit 17.

  The measurement circuits M1 to MN are provided on the output lines L1 to LN. And each measurement circuit M1-MN measures the electric current (following, conduction current) which flows into each output line L1-LN as consumption current of each arithmetic unit U1-UN. The measurement result of the current by each of the measurement circuits M1 to MN is input to the cutoff control circuit 17.

  The blocking circuits C1 to CN are also provided in the output lines L1 to LN. Then, in response to the shutoff command from the shutoff control circuit 17, each of the shutoff circuits C1 to CN shuts off the output lines L1 to LN provided with the shutoff circuits C1 to CN. Assuming that any integer of 1 to N is “n”, the output circuit Ln is cut off by the cut-off circuit Cn, whereby the power supply to the arithmetic device Un corresponding to the output line Ln is cut off.

  Interruption control circuit 17 detects an output line (hereinafter referred to as a current increase line) having a larger conduction current by a predetermined value or more than other output lines among output lines L1 to LN, using the measurement results of measurement circuits M1 to MN. Do. The conduction current of each of the output lines L1 to LN is the consumption current of each of the arithmetic devices U1 to UN. Therefore, detection of the current increase line means, in other words, among the calculation devices U1 to UN, a calculation device (hereinafter referred to as current increase device) whose consumption current is larger than the other calculation devices by a predetermined value is detected. It is.

  Then, the shutoff control circuit 17 shuts off the current increase line for a predetermined time by controlling the shutoff circuit provided in the detected current increase line among the shutoff circuits C1 to CN. That the current increase line is cut off for a predetermined time Ta means, in other words, the power supply to the arithmetic device corresponding to the current increase line (i.e., the current increase device) among the calculation devices U1 to UN is cut off for a predetermined time Ta It is to be done. The predetermined time Ta is set to a time that is equal to or longer than the minimum time that can eliminate latch-up generated in the arithmetic devices U1 to UN.

The cutoff control circuit 17 may be realized using one or more hardware. For example, when the shutoff control circuit 17 is implemented by an electronic circuit that is hardware, the electronic circuit may be implemented by a digital circuit including multiple logic circuits, an analog circuit, or a combination thereof. Further, the cutoff control circuit 17 may be configured around at least one microcomputer. In this case, each function of the shutoff control circuit 17 is realized by the CPU, which is a component of the microcomputer, executing a program stored in a non-transitional tangible storage medium such as a ROM.

[1-2. processing]
Next, the shutoff control process performed by the shutoff control circuit 17 will be described using the flowchart of FIG. The shutoff control circuit 17 executes the shutoff control processing of FIG.

  As shown in FIG. 2, when the shutoff control circuit 17 starts the shutoff control process, in S110, the shutoff control circuit 17 acquires measurement results of the conduction current of the output lines L1 to LN from the measurement circuits M1 to MN. The measurement result obtained in S110 is also the measurement result of the current consumption of each of the arithmetic devices U1 to UN.

  The shutoff control circuit 17 selects one output line to be determined from the output lines L1 to LN in the next S120. The output line to be determined is an output line to be determined whether it is a current increase line or not. In S120, among the output lines L1 to LN, an output line not selected yet after the start of the shutoff control process is selected as an output line to be determined.

  Moreover, since the output lines L1 to LU correspond to the arithmetic devices U1 to UN one-to-one, selecting one output line to be judged in S120 is determined from among the arithmetic devices U1 to UN. It is equivalent to selecting one target arithmetic device. The arithmetic device to be determined is an arithmetic device to be determined whether it is a current increasing device.

  In the next S130, the cut-off control circuit 17 determines whether the conduction current of the output line to be determined in S120 is greater than or equal to the conduction current of another output line among the output lines L1 to LN. Determine The determination in S130 is performed using the measurement result acquired in S110.

  In other words, in S130, it is determined whether the consumption current of the arithmetic device to be determined in S120 is larger than the consumption current of other arithmetic devices among the arithmetic devices U1 to UN by a predetermined value or more. Ru.

  If the cutoff control circuit 17 determines “YES” in S130, it determines that the output line to be determined is the current increase line. Therefore, the current increase line is detected by the determination of S130.

  Further, in other words, when the disconnection control circuit 17 determines “YES” in S130, it determines that the arithmetic device to be determined is the above-described current increasing device. Therefore, the current increase device is detected by the determination of S130.

  When the interruption control circuit 17 determines “YES” in S130, the interruption control circuit 17 determines that the arithmetic device corresponding to the output line to be determined among the arithmetic devices U1 to UN, that is, the current increasing device. It is determined that latch-up has occurred in the arithmetic device to be determined, and the process proceeds to S140. This is because the consumption current of the computing device in which the latch-up has occurred is larger than the consumption current of the normal computing device in which the latch-up has not occurred.

In S140, the shutoff control circuit 17 shuts off the judgment target output line by giving a shutoff command to the shutoff circuit provided in the judgment target output line among the shutoff circuits C1 to CN. Therefore, the power supply to the arithmetic device corresponding to the output line to be determined determined to be the current increase line, in other words, the power supply to the arithmetic device to be determined determined to be the current increase device, It is cut off. Then, the shutoff control circuit 17 proceeds to S150 after performing the process of S140.

  In addition, when the cutoff control circuit 17 determines “NO” in S130, that is, determines that the conduction current of the output line to be determined is not larger than the conduction current of other output lines by a predetermined value or more. , S140 without performing the process of S140.

  In S150, the cutoff control circuit 17 determines whether the loop end condition is satisfied, and if the loop end condition is not satisfied, the process returns to S120. The loop termination conditions will be described later.

If the interruption control circuit 17 determines that the loop end condition is satisfied in S150, the process proceeds to S160.
In S160, the cutoff control circuit 17 performs processing to release the cutoff of the output line that was blocked in S140. Specifically, the interruption control circuit 17 cancels the interruption when a predetermined time period Ta elapses after the interruption of the interrupted output line. Then, the shutoff control circuit 17 ends the shutoff control process. By releasing the interruption of the output line by the process of S160, the power supply to the arithmetic device corresponding to the output line is resumed. If there is no output line cut off in S140, the process is not performed in S160, and the cut-off control process is ended.

Next, a loop end condition in which establishment / non-establishment is determined in S150 will be described.
First, among the output lines L1 to LN, an output line for which a predetermined specified time Tb has not passed since the disconnection in S160 is not selected as an output line to be determined in S120, and the determination in S130 is performed. It is not selected as another output line.

  Then, as the loop end condition, “all output lines of the output lines L1 to LN except the output line for which the specified time Tb has not passed since the release of the shutoff are selected as output lines to be determined in S120. Condition.

  For this reason, among the output lines L1 to LN, the output lines for which the specified time Tb has not elapsed since the release of the shutoff are excluded from targets to which current flows are compared in order to detect the current increase line. In other words, among the arithmetic devices U1 to UN, the arithmetic devices for which the specified time Tb has not elapsed since the interruption of the power supply is canceled are excluded from the targets to which the current consumption is compared to detect the current increasing device. Ru.

[1-3. effect]
According to the first embodiment described above, the following effects can be obtained.
(1a) The power supply device 13 of the ECU 11 detects a current increase line which is an output line having a larger conduction current by a predetermined value or more than the other output lines among the output lines L1 to LN, and the current increase line is detected for a predetermined time Ta Only cut off. In other words, among the arithmetic devices U1 to UN, a current increasing device which is an arithmetic device whose consumption current is larger than other arithmetic devices by a predetermined value or more is detected, and power supply to the current increasing device is interrupted for a predetermined time Ta. Ru.

  Therefore, it is not after the consumption current of the operation device (hereinafter, latch-up generation device) in which the latch-up has occurred among operation devices U1 to UN becomes equal to or more than the fixed threshold for latch-up determination, and other operations When the current consumption of the device exceeds a predetermined value, the power supply to the latch-up generator is interrupted for a predetermined time Ta.

  Therefore, when latch-up occurs in any one of the arithmetic devices U1 to UN, power supply to the arithmetic device can be cut off promptly. Therefore, it is possible that the operation of another arithmetic device in which latch-up does not occur is inhibited by a temperature rise or a decrease in power supply voltage VD due to the occurrence of latch-up in any of arithmetic devices U1 to UN. Sex can be lowered.

  (1b) For each of the output lines L1 to LN, the shutoff control circuit 17 determines whether or not the conduction current of the output line is larger than the conduction current of the other output lines by the predetermined value or more. An output line which is determined that the conduction current is larger than a conduction current of another output line by a predetermined value or more is detected as a current increase line. This is realized by S110 to S130 and S150 in FIG. In other words, the shutoff control circuit 17 determines, for each of the arithmetic devices U1 to UN, whether the consumption current of the arithmetic device is larger than the consumption current of the other arithmetic devices by a predetermined value or more. An arithmetic unit determined to have a current larger than a consumption current of another arithmetic unit by a predetermined value or more is detected as a current increasing device.

Therefore, it is possible to specify, among the arithmetic devices U1 to UN, the arithmetic device (i.e., the latch-up generation device) in which the latch-up has occurred by relatively simple processing.
(1c) Of the output lines L1 to LN, the shutoff control circuit 17 is configured to exclude the output lines for which the specified time Tb has not elapsed since the cancellation of the shutoff from being subjected to comparison of the supplied current. . In other words, the shutoff control circuit 17 is configured such that among the arithmetic devices U1 to UN, the arithmetic devices for which the specified time Tb has not elapsed since the interruption of the power supply is canceled are excluded from the current consumption comparison targets. It is done.

  Therefore, among the arithmetic units U1 to UN, an arithmetic unit that has not yet started processing for engine control after power supply is resumed, that is, an arithmetic unit that has not yet started the same processing as other arithmetic units. , The current consumption is not compared. Therefore, it becomes possible to more correctly identify the arithmetic device in which the latch-up has occurred.

  (1d) The power supply device 13 includes the measuring circuits M1 to MN and the blocking circuits C1 to CN on the output lines L1 to LN. For this reason, the measurement of the energizing current for each of the output lines L1 to LN and the interruption for each of the output lines L1 to LN can be correctly performed. In other words, the measurement of the consumption current for each of the arithmetic devices U1 to UN and the interruption of the power supply for each of the arithmetic devices U1 to UN can be performed correctly.

  In the first embodiment, the shutoff control circuit 17 functions as a detection unit and a shutoff control unit. Further, among the steps in FIG. 2, S110 to S130 and S150 correspond to processing as a detection unit, and S140 and S160 correspond to processing as a cutoff control unit.

[2. Second embodiment]
[2-1. Differences from the First Embodiment]
The basic configuration of the second embodiment is the same as that of the first embodiment, so the difference will be described below. The same reference numerals as in the first embodiment denote the same components, and reference is made to the preceding description.

In the ECU 11 of the second embodiment, the shutoff control circuit 17 of the power supply device 13 performs the shutoff control process of FIG. 3 instead of the shutoff control process of FIG. 2.
[2-2. processing]
As shown in FIG. 3, when the shutoff control circuit 17 starts the shutoff control process, at S210, as in S110 of FIG. 2, from the respective measurement circuits M1 to MN, the conduction currents of the respective output lines L1 to LN are Get measurement results.

  In the next S220, based on the measurement result acquired in S210, the shutoff control circuit 17 among the output lines L1 to LN, the output line with the largest conduction current (hereinafter, the largest current line) and the smallest conduction current. An output line (hereinafter, the minimum current line) is detected.

  However, in S220, among the output lines L1 to LN, the output lines for which the above-mentioned prescribed time Tb has not elapsed since the disconnection in S250 described later are excluded from the targets of detection. For this reason, an output line for which the specified time Tb has not elapsed since the release of the cutoff is excluded from the targets to which the conduction current is compared in S230 described later.

  The maximum current line detected in S220 corresponds to the computing device with the largest current consumption (hereinafter, the maximum current device) among the computing devices U1 to UN. Similarly, the minimum current line detected in S220 corresponds to the computing device with the smallest current consumption (hereinafter, the minimum current device) among the computing devices U1 to UN. For this reason, in other words, in S220, the maximum current device and the minimum current device of the arithmetic devices U1 to UN are detected.

  The shutoff control circuit 17 determines whether or not the difference between the conduction current of the maximum current line and the conduction current of the minimum current line is equal to or greater than a predetermined value in the next S230. The determination process in S230 is also a process of determining whether the difference between the current consumption of the maximum current device and the current consumption of the minimum current device is equal to or more than a predetermined value.

  If the cutoff control circuit 17 determines “YES” in S230, it determines that the maximum current line is the aforementioned current increase line, and proceeds to S240. Therefore, the current increase line is detected by the determination of S230.

  Further, in other words, when the cutoff control circuit 17 determines “YES” in S230, it determines that the maximum current device is the aforementioned current increase device, and proceeds to S240. Therefore, the current increase device is detected by the determination of S230.

  In S240, the shutoff control circuit 17 shuts off the maximum current line by giving a shutoff command to the shutoff circuit provided in the maximum current line among the shutoff circuits C1 to CN. By the process of S240, the power supply to the maximum current device is cut off. Then, the cutoff control circuit 17 proceeds to S250 after performing the processing of S240.

Further, when the cutoff control circuit 17 determines “NO” in the above-described S230, the processing proceeds to S250 without performing the processing of S240.
In S250, the blocking control circuit 17 performs processing for releasing the blocking of the output line disconnected in S240, as in S160 of FIG. Specifically, the interruption control circuit 17 cancels the interruption when a predetermined time period Ta elapses after the interruption of the interrupted output line. Then, the shutoff control circuit 17 ends the shutoff control process. If there is no output line cut off at S240, no processing is performed at S250, and the cut-off control processing is terminated.

[2-3. effect]
Also in the second embodiment described above, the effects (1a), (1c), and (1d) of the first embodiment described above are exhibited, and the following effect (2a) is also exhibited.

(2a) The shutoff control circuit 17 detects the maximum current line and the minimum current line among the output lines L1 to LN, and the difference between the maximum current line conduction current and the minimum current line conduction current is a predetermined value or more Then, the maximum current line is detected as a current increase line. This is realized by S210 to S230 in FIG. In other words, the shutoff control circuit 17 detects the maximum current device and the minimum current device among the arithmetic devices U1 to UN, and the difference between the consumption current of the maximum current device and the consumption current of the minimum current device is a predetermined value or more Then, the maximum current device is detected as a current increasing device.

For this reason, it is possible to specify the latch-up generation device among the operation devices U1 to UN by simpler processing.
In the second embodiment, of the steps in FIG. 3, S210 to S230 correspond to the processing as the detection unit, and S240 and S250 correspond to the processing as the shutoff control unit.

[3. Other embodiments]
The power supply device 13 of each of the above embodiments may be configured by an element according to a process for which a latch-up countermeasure is taken. With this configuration, the reliability of the ECU 11 is further improved. As a latch-up measure to be applied, for example, there is SOI (i.e., Silicon on Insulator). Further, as another example of the latch-up measures, there are, for example, use of SOS (i.e., Silicon on Sapphire), a circuit of a static configuration, reinforcement of a guard band, an increase in distance between transistors, and the like.

As mentioned above, although embodiment of this indication was described, this indication can be variously deformed and implemented, without being limited to the above-mentioned embodiment.
For example, although the single power supply circuit 15 is provided in the power supply device 13 of each of the embodiments, a plurality of power supply circuits similar to the power supply circuit 15 may be provided. In this case, one power supply circuit may be provided for each of the output lines L1 to LN, or one power supply circuit may be provided for each set of multiple (for example, two) output lines. In addition, the arithmetic devices U1 to UN may have different hardware or may perform different processing as long as the current consumption at the normal time is not largely different.

  Further, a plurality of functions possessed by one component in the above embodiment may be realized by a plurality of components, or one function possessed by one component may be realized by a plurality of components. Further, a plurality of functions possessed by a plurality of components may be realized by a single component, or a single function realized by a plurality of components may be realized by a single component. In addition, part of the configuration of the above embodiment may be omitted. Further, at least a part of the configuration of the above-described embodiment may be added to or replaced with the configuration of the other above-described embodiment. It is to be noted that all aspects included in the technical concept specified from the words described in the claims are the embodiments of the present disclosure.

  11: ECU, U1 to UN: arithmetic device, 13: power supply device, 17: shutoff control circuit, L1 to LN: output line, M1 to MN: measurement circuit, C1 to CN: shutoff circuit

Claims (12)

An electronic control device comprising: a plurality of arithmetic devices (U1 to UN); and a power supply device (13) for supplying power to the plurality of arithmetic devices,
The power supply device
A detection unit (17, S110 to S130, S150, and S210 to S230) configured to detect a current increasing device that is an arithmetic device having a current consumption larger by a predetermined value or more than other arithmetic devices among the plurality of arithmetic devices. )When,
A shutoff control unit (17, S140, S160, S240, S250) configured to shut off the power supply to the current increasing device detected by the detection unit for a predetermined period of time;
Electronic control unit. The detection unit (17, S110 to S130, S150)
For each of the plurality of arithmetic devices, it is determined whether the consumption current of the arithmetic device is larger than the consumption current of the other arithmetic devices by the predetermined value or more, and according to this determination, the consumption current is consumption of the other arithmetic devices The arithmetic device determined to be larger than the current by the predetermined value or more is configured to be detected as the current increase device.
The electronic control device according to claim 1. The detection unit (17, S210 to S230)
Among the plurality of arithmetic devices, the arithmetic device with the largest consumption current is detected as the largest current device, and the arithmetic device with the smallest consumption current is detected as the smallest current device, and the consumption current of the largest current device and the smallest current The maximum current device is configured to be detected as the current increase device if the difference between the current consumption of the device and the current consumption is equal to or more than the predetermined value.
The electronic control device according to claim 1. The detection unit is
Among the plurality of arithmetic devices, the arithmetic devices for which a predetermined time has not elapsed since the interruption of the power supply is canceled are configured to exclude the consumption current from the objects to be compared.
The electronic control device according to any one of claims 1 to 3. The power supply device is configured by an element by a process in which a latch-up countermeasure is applied.
The electronic control unit according to any one of claims 1 to 4. The power supply device
A plurality of output lines (L1 to LN) for supplying power to the plurality of arithmetic devices;
A plurality of measurement circuits (M1 to MN) which are provided in the respective output lines and which measure the current flowing in the respective output lines as the consumption current of the respective arithmetic devices;
And a plurality of blocking circuits (C1 to CN) provided on the respective output lines and capable of blocking the respective output lines,
The detection unit is configured to perform detection of the current increase device using measurement results of the plurality of measurement circuits.
The shutoff control unit controls the shutoff circuit provided on the output line corresponding to the current increase device detected by the detection unit, to thereby supply power to the current increase device detected by the detection unit. Configured to shut off the supply,
The electronic control device according to any one of claims 1 to 5. A plurality of output lines (L1 to LN) for supplying power to a plurality of arithmetic units (U1 to UN);
A detection unit (17, S110 to S110) configured to detect a current increase line, which is an output line whose conduction current, which is a current flowing, is larger than a predetermined value, among the plurality of output lines. S130, S150, S210 to S230),
A shutoff control unit (17, S140, S160, S240, S250) configured to shut off the current increase line detected by the detection unit for a predetermined time period;
Power supply. The detection unit (17, S110 to S130, S150)
For each of the plurality of output lines, it is determined whether or not the conduction current of the output line is greater than or equal to the conduction current of the other output line by the predetermined value, The output line determined to be larger than the current by the predetermined value or more is configured to be detected as the current increase line.
The power supply device according to claim 7. The detection unit (17, S210 to S230)
Among the plurality of output lines, the output line with the largest conduction current is detected as the largest current line, and the output line with the smallest conduction current is detected as the smallest current line, and the conduction current of the largest current line and the minimum current The maximum current line is configured to be detected as the current increase line if the difference between the current flow of the line and the current is equal to or greater than the predetermined value.
The power supply device according to claim 7. The detection unit is
Among the plurality of output lines, an output line for which a predetermined specified time has not passed since the release of the shutoff is configured to be excluded from the targets to which the conduction current is compared.
The power supply device according to any one of claims 7 to 9. The power supply unit is configured by an element by a process in which a latch-up countermeasure is taken.
The power supply device according to any one of claims 7 to 10. A plurality of measurement circuits (M1 to MN) which are provided in the respective output lines and which measure the conduction current of the respective output lines;
And a plurality of blocking circuits (C1 to CN) provided on the respective output lines and capable of blocking the respective output lines,
The detection unit is configured to detect the current increase line by using measurement results of the plurality of measurement circuits.
The shutoff control unit is configured to shut off the current increase line detected by the detection unit by controlling the shutoff circuit provided in the current increase line detected by the detection unit. ,
The power supply device according to any one of claims 7 to 11.

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