JP5389239B1 - Memory diagnostic device and memory diagnostic method - Google Patents

Abstract

In a memory diagnosis of a control device, the reliability of the entire vehicle is ensured by terminating the memory diagnosis within a predetermined time.
A first microcomputer 110 for executing a control calculation process for controlling vehicle movement of a vehicle and a memory diagnosis process for diagnosing a memory failure, a first vehicle condition confirmation unit 113, and a vehicle condition And a processing content determination means 112 that determines the execution time distribution of the control calculation process and the memory diagnosis process in response, the first measurement time that is the total execution time of the control calculation process exceeds the first threshold, When the second measurement time, which is the total execution time of the memory diagnosis process, does not satisfy the second threshold, the processing time of the control calculation process is suppressed by suppressing the vehicle motion, and the execution time of the memory diagnosis process Increase allocation.
[Selection] Figure 1

Description

  The present invention relates to a memory diagnostic apparatus and a memory diagnostic method, and more particularly to a memory diagnostic apparatus and a memory diagnostic method for inspecting a memory mounted in a vehicle such as an automobile.

  As a conventional memory diagnosis method, for example, there is a method described in Patent Document 1. In the method described in Patent Document 1, in a system configuration in which a host processing device and a plurality of control devices operable under the control thereof are connected to one signal path, each control device is provided with a memory device provided therein. Error detecting means for checking the data error by reading the contents in the predetermined area.

  In the system configuration described in Patent Document 1, the host processing device and the control device exchange signals with each other via a signal path. That is, the control device receives the control signal from the host processing device via the signal path, performs necessary processing, and uses the processing result as a response signal to the control signal via the signal path. Return to processing device.

  In the conventional memory diagnosis method described in Patent Document 1 in such a system configuration, the microprocessor of the control device first reads the contents of the first type designation area of the memory device and detects an error by the error detection means. When a seed failure diagnosis is performed and the error detection means detects an error in the first type failure diagnosis, an area including the address where the error is detected is included in the second type area narrower than the first type designation area of the memory device. On the other hand, the second type failure diagnosis for detecting an error is performed. However, when the control device receives a control signal from the host processing device during execution of the first type failure diagnosis or the second type failure diagnosis, the control device interrupts the failure diagnosis.

Japanese Patent Laid-Open No. 7-306811 (FIG. 1)

  However, the above prior art has the following problems.

  In the memory diagnosis method described in Patent Document 1, the control device needs to stop the memory diagnosis every time a control signal is received from the host processing device. In general, in a vehicle such as an automobile, it is necessary to finish diagnosis of all memory areas within a predetermined time in order to ensure the reliability of the vehicle. When the memory diagnosis method is applied, it is assumed that the frequency of receiving the control signal from the host processing device is increased depending on the vehicle situation. In this case, the control processing frequency is increased accordingly, and therefore the predetermined time There is a problem that there is a high possibility that the diagnosis of the entire memory area cannot be completed.

  Further, unlike the system configuration of Patent Document 1, even when a system configuration in which a host processing device is not provided is assumed, similarly, when the above conventional memory diagnosis method is applied to a vehicle control device, Because the control device needs to increase its own control processing frequency according to the vehicle situation, the diagnosis of all memory areas cannot be completed within a predetermined time, and the reliability of the vehicle cannot be ensured. is there.

  The present invention has been made to solve such a problem. In the memory diagnosis of the control device, the memory diagnosis device and the memory diagnosis can ensure the reliability of the entire vehicle by terminating the memory diagnosis within a predetermined time. The purpose is to obtain a method.

  The present invention is a memory diagnostic device mounted on a vehicle and provided with a control device, wherein the control device includes a memory to be diagnosed mounted on the vehicle and a control amount for controlling vehicle motion of the vehicle. Processing means for performing control calculation processing for calculating the memory, memory diagnosis processing for diagnosing the presence or absence of a failure of the memory, vehicle status confirmation means for acquiring vehicle information indicating the vehicle movement status of the vehicle, and the vehicle status Based on the vehicle information acquired by the confirmation means, a processing content determination means for determining an execution time distribution between the control calculation process and the memory diagnosis process performed by the processing means, and a total operation time of the control device. First measurement means for measuring one measurement time, second measurement means for measuring a second measurement time that is a total execution time of the memory diagnosis processing, and a first for suppressing vehicle movement of the vehicle. And the control calculation process varies in a required processing time in accordance with the vehicle movement situation, and the processing content determination means has the first measurement time as a first threshold value. And the second measurement time does not satisfy the second threshold value, the first suppression means is driven to suppress the vehicle motion of the vehicle, and is necessary for the control calculation process. The memory diagnosis apparatus is characterized in that the processing time distribution of the memory diagnosis process is increased while suppressing a long processing time.

  The present invention is a memory diagnostic device mounted on a vehicle and provided with a control device, wherein the control device includes a memory to be diagnosed mounted on the vehicle and a control amount for controlling vehicle motion of the vehicle. Processing means for performing control calculation processing for calculating the memory, memory diagnosis processing for diagnosing the presence or absence of a failure of the memory, vehicle status confirmation means for acquiring vehicle information indicating the vehicle movement status of the vehicle, and the vehicle status Based on the vehicle information acquired by the confirmation means, a processing content determination means for determining an execution time distribution between the control calculation process and the memory diagnosis process performed by the processing means, and a total operation time of the control device. First measurement means for measuring one measurement time, second measurement means for measuring a second measurement time that is a total execution time of the memory diagnosis processing, and a first for suppressing vehicle movement of the vehicle. And the control calculation process varies in a required processing time in accordance with the vehicle movement situation, and the processing content determination means has the first measurement time as a first threshold value. And the second measurement time does not satisfy the second threshold value, the first suppression means is driven to suppress the vehicle motion of the vehicle, and is necessary for the control calculation process. Since the memory diagnosis device is characterized in that the processing time distribution of the memory diagnosis processing is increased and the memory diagnosis processing time distribution is increased, the memory diagnosis of the control device is completed within a predetermined time in the memory diagnosis of the control device. Ensure reliability.

It is a block block diagram which shows the memory diagnostic apparatus which concerns on Embodiment 1 of this invention. It is a flowchart which shows the processing flow of the memory diagnostic apparatus which concerns on Embodiment 1 of this invention. It is a figure which shows the process pattern determination table of the memory diagnostic apparatus which concerns on Embodiment 1 of this invention. It is a processing time allocation list | wrist with respect to the processing pattern of the memory diagnostic apparatus which concerns on Embodiment 1 of this invention. It is a time flow which shows the process of the memory diagnostic apparatus which concerns on Embodiment 1 of this invention. It is a time flow which shows the process of the memory diagnostic apparatus which concerns on Embodiment 1 of this invention. It is a block block diagram which shows the memory diagnostic apparatus which concerns on Embodiment 2 of this invention. It is a flowchart which shows the processing flow of the memory diagnostic apparatus which concerns on Embodiment 2 of this invention.

  Hereinafter, preferred embodiments of a memory diagnostic device and a memory diagnostic method according to the present invention will be described with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals. In the following embodiments, a case where a control device as a memory diagnostic device is mounted on a vehicle will be described as an example.

Embodiment 1 FIG.
FIG. 1 is a block diagram showing a configuration of a memory diagnostic apparatus (first control apparatus) that performs the memory diagnostic method according to the first embodiment of the present invention. The first control device in FIG. 1 is an antilock brake system control device (hereinafter referred to as an ABS control device) 100. The memory to be diagnosed, on which the ABS control device 100 performs the memory diagnostic method, is the first recording device (memory area) 111 in FIG.

  As shown in FIG. 1, an ABS unit 101 and a wheel speed sensor 102 are connected to the ABS control device 100.

  The ABS control device 100 includes a first microcomputer (processing means) 110, a first recording device (memory area) 111, a processing content determination means 112, a first vehicle status confirmation means 113, and an operating time measurement means. (First measurement means) 114, diagnosis time measurement means (second measurement means) 115, and first suppression means 116.

  The ABS control device 100 actually has necessary components in addition to the components shown in FIG. 1, but since it is not directly related to the first embodiment, the description thereof is omitted here. To do.

  Hereinafter, each configuration shown in FIG. 1 provided in the ABS control apparatus 100 will be described.

  The first microcomputer 110 performs various processes and various calculations based on a program recorded in advance in the first recording device 111. The processing contents of the first microcomputer 110 include at least a control calculation process (ABS unit control calculation process) for calculating a control amount for the ABS unit 101 that is a control target for controlling the vehicle motion of the vehicle, And a memory diagnosis process for diagnosing the presence or absence of a memory failure in one recording device 111.

  The first recording device 111 is configured by a non-volatile memory or a volatile memory, and is a device that records data and programs. As the program, the control arithmetic processing of the ABS unit 101 and the memory diagnostic processing procedure of the first recording device 111, the data necessary for them, the procedure of other processing not directly related to those processings, and other data Etc. are recorded. In the control calculation process of the ABS unit 101, it is assumed that the processing load (processing frequency) increases as the wheel speed increases. As described above, the first recording device 111 is a diagnosis target of the memory diagnosis process of the present invention.

  The processing content determination unit 112 is performed at predetermined time intervals using the vehicle speed information output from the first vehicle state confirmation unit 113 as vehicle information indicating a vehicle movement state (hereinafter simply referred to as a vehicle state). The processing feasible time in the first microcomputer 110 (processing pattern and execution time distribution of processing time assigned to each process included in the processing pattern) is determined. The processing feasible time may be secured continuously or may be secured in a distributed manner. Here, the predetermined time interval is 5 milliseconds (hereinafter referred to as ms).

  The first vehicle status confirmation unit 113 collects wheel speed information from the wheel speed sensor 102 as vehicle information, calculates the vehicle speed based on the wheel speed information, and outputs the vehicle speed information to the processing content determination unit 112.

  The operating time measuring means 114 measures the control device operating time (first measuring time) that is the total operating time that the ABS control device 100 has driven so far.

  The diagnosis time measuring means 115 measures the memory diagnosis total time (second measurement time) that is the total execution time of the memory diagnosis processing up to the present time.

  The first suppression means 116 is a means for suppressing the vehicle motion. Here, the ABS unit 101 is controlled to brake the vehicle, and the vehicle speed is 60 km / hour (hereinafter referred to as km / h). ) Decelerate to below.

  The ABS unit 101 is a part that controls the hydraulic pressure of the brake that brakes each wheel based on the control from the ABS control device 100. Since the internal configuration of the ABS unit 101 is not related to the memory diagnosis method of the present invention, the description thereof is omitted. The internal configuration of the ABS unit 101 is not particularly limited, and any existing conventional configuration can be applied.

  The wheel speed sensor 102 is provided on each wheel of the vehicle, measures the wheel speed of each wheel, and outputs it as wheel speed information.

  Further, in general, there are configurations other than those described above in an actual vehicle, but since they are not directly related to the memory diagnosis method of the present invention, description thereof is omitted here.

  Next, a processing flow of the processing content determination unit 112 will be described with reference to FIGS. The processing content determination means 112 performs the processing of the flowchart shown in FIG. 2 every predetermined time, and determines the processing feasible time of the ABS unit control arithmetic processing and the memory diagnostic processing executed by the first microcomputer 110. . Here, the predetermined time is 5 ms.

  In step S201, the first vehicle status confirmation unit 113 collects wheel speed information from the wheel speed sensor 102 as vehicle information, and calculates the vehicle speed from the collected wheel speed.

  In step S202, the processing content determination means 112 determines a processing pattern in the first microcomputer 110 based on the vehicle speed information obtained in step S201 and the processing pattern determination table shown in FIG. In the processing pattern determination table of FIG. 3, when the vehicle speed is less than 40 km / h, the processing pattern 1 is selected, and when the vehicle speed is 40 km / h or more and less than 60 km / h, the processing pattern 2 is selected as the vehicle speed is 60 km / h. When h or more, the processing pattern to be selected for each vehicle speed is registered in advance so that the processing pattern 3 is selected. Further, the processing content determination means 112 determines the time allocated to each processing included in the selected processing pattern according to the processing time allocation list for the processing pattern per 5 ms in FIG. In the processing time allocation list of FIG. 4, when the processing pattern is 1, the allocation time of the ABS unit control arithmetic processing is 3 ms, the allocation time of the memory diagnosis processing is 1.5 ms, and the allocation time of other processing is 0.5 ms. The total is 5 ms. Similarly, in the case of processing pattern 2, the allocation time of ABS unit control arithmetic processing is 4 ms, the allocation time of memory diagnosis processing is 0.5 ms, and the allocation time of other processing is 0.5 ms. In this case, the allocation time of the ABS unit control calculation process is 4.5 ms, the allocation time of the memory diagnosis process is 0 ms, and the allocation time of the other processes is 0.5 ms, each of which is 5 ms as a whole. . In the present embodiment, the processing pattern determination table in FIG. 3 and the processing time allocation list in FIG. 4 are recorded in the first recording device 111 in advance.

  The processing time allocation list of FIG. 4 will be described in more detail. In the processing pattern 3 when the vehicle speed is high, the memory diagnosis processing executable time is 0 ms, while the ABS unit control calculation processing is 4.5 ms. Therefore, priority is given to the ABS unit control calculation process, which is likely to increase the processing time according to the vehicle speed. Further, in the processing pattern 1 when the vehicle speed is low, the memory diagnostic processing execution time is 1.5 ms, while the ABS unit control calculation processing is 3 ms, so that the memory diagnostic processing execution time is ensured and efficient. High memory diagnosis can be performed. Further, in the processing pattern 2 where the vehicle speed is 40 km / h or more and less than 60 km / h, the memory diagnosis processing executable time is 0.5 ms, while the ABS unit control calculation processing is 4 ms, and the memory diagnosis processing can be executed. While securing the time, the ABS unit control calculation processing executable time is also secured according to the vehicle speed. By using such a processing time allocation list, when the vehicle speed increases, priority is given to ABS unit control arithmetic processing that is likely to increase the processing time according to the vehicle speed by reducing the memory diagnosis processing executable time. When the vehicle speed is low, it is possible to implement a highly efficient memory diagnosis by increasing the allocation of the memory diagnosis process executable time. Further, when it is determined that the memory diagnosis does not end at the specified time, the memory diagnosis time is secured by selecting the processing pattern 2 or the processing pattern 1 by suppressing the vehicle motion, and the specified time (8 hours) The reliability of the entire vehicle is ensured by making it possible to finish the diagnosis of the entire memory area.

  Returning to the description of FIG. In step S203, the measurement time is collected. As the measurement time, the control device operation time is collected from the operation time measurement means 114, and the memory diagnosis total time is collected from the diagnosis time measurement means 115, respectively.

  In step S204, it is confirmed whether or not the operation time of the control device is less than a preset first specified time (first threshold). Here, the first specified time is a value equal to or shorter than the third specified time during which the memory diagnosis of the entire area must be completed, and is set to 6 hours (hereinafter referred to as hr). If it is less than the first specified time, the process ends. If it is longer than the first specified time, the process proceeds to step S205.

  In step S205, it is confirmed whether or not the memory diagnosis total time is equal to or longer than a predetermined second predetermined time (second threshold). Here, the second specified time is a time required for diagnosing the entire area of the first recording apparatus 111 and is 45 min. Here, when the memory diagnosis total time is equal to or longer than the second specified time, it is determined that the memory diagnosis is performed again from the beginning. Accordingly, if the total memory diagnosis time is equal to or longer than the second specified time, the process proceeds to step S207. If the total memory diagnosis time is less than the second specified time, the process proceeds to step S206.

  In step S206, the first suppression means 116 controls the ABS unit 101, brakes the vehicle to suppress the vehicle motion, decelerates the vehicle speed to 60 km / h or less, and ends the process.

  In step S207, if the first suppression means 116 controls the ABS unit 101 to brake the vehicle as a suppression of vehicle motion, it is canceled and the process is terminated.

  In the ABS control apparatus 100 having such a configuration, three processes of an ABS unit control arithmetic process for controlling the ABS unit 101, a memory diagnosis process for the first recording apparatus 111, and other processes in 5 ms are performed. Are repeated every 5 ms.

  The operation according to the memory diagnosis method in the ABS control apparatus 100 having such a configuration will be described with reference to the time charts of FIGS. Here, vehicle speed information calculated from wheel speed information is used as the vehicle situation. 5 and 6, it is assumed that the driver is performing the same driving operation. As a precondition, it is assumed that the memory diagnosis needs to be completed for all areas by the third specified time (8 hours).

  First, the flow of processing when vehicle motion that is normal processing is not suppressed will be described with reference to FIG. At this time, it is assumed that the control device operating time exceeds 6 hr at time t3, and the memory diagnosis total time exceeds 45 min.

  At time t0, the processing content determination means 112 first checks the vehicle speed calculated by the first vehicle status confirmation means 113 according to the processing content determination flow of FIG. Here, it is less than 40 km / h. Next, the processing content determination means 112 determines a processing pattern using the processing pattern determination table of FIG. Here, since the vehicle speed is less than 40 km / h, the processing pattern 1 is selected. Then, as processing pattern 1, according to the processing time allocation list of FIG. 4, a process execution time of 3 ms is determined for the ABS unit control calculation process and 1.5 ms for the memory diagnosis process.

  Next, the processing content determination means 112 collects the measurement time at time t0. As the measurement time, as described above, the control device operation time is collected from the operation time measurement unit 114, and the memory diagnosis total time is collected from the diagnosis time measurement unit 115, respectively. As a result of the collection, the controller operating time is 5 hr 10 min and the memory diagnosis total time is 38 min. Since the control device operating time does not exceed 6 hr (first specified time), the processing is terminated according to the flow of FIG.

  Next, it is assumed that the vehicle speed exceeds 40 km / h at time t1. The processing content determination means 112 confirms the vehicle speed calculated by the first vehicle status confirmation means 113, and since the vehicle speed is not less than 40 km / h and less than 60 km / h, the processing pattern 2 is determined according to the processing pattern determination table of FIG. Select. Then, as process pattern 2, according to the process time allocation list of FIG. 4, a process execution time of 4 ms is determined for the ABS unit control calculation process and 0.5 ms is determined for the memory diagnosis process.

  Next, the processing content determination unit 112 collects the measurement time at the time t1 from the operation time measurement unit 114 and the diagnosis time measurement unit 115. Here, the controller operating time is 5 hr 30 min, and the memory diagnosis total time is 44 min. Since the control device operating time does not exceed 6 hr (first specified time), the processing is terminated according to the flow of FIG.

  Next, it is assumed that the vehicle speed exceeds 60 km / h at time t2. The processing content determination means 112 confirms the vehicle speed calculated by the first vehicle status confirmation means 113, and selects the processing pattern 3 according to the processing pattern determination table of FIG. 3 because the vehicle speed is 60 km / h or higher. Then, as process pattern 3, according to the process time allocation list of FIG. 4, a process execution time of 4.5 ms is determined for the ABS unit control calculation process and 0 ms is determined for the memory diagnosis process.

  Next, the processing content determination unit 112 collects the measurement time at the time t2 from the operation time measurement unit 114 and the diagnosis time measurement unit 115. Here, the control device operating time is 5 hr 50 min, and the memory diagnosis total time is 46 min. Since the control device operating time does not exceed 6 hr (first specified time), the processing is terminated according to the flow of FIG.

  Next, it is assumed that the control apparatus operating time exceeds 6 hr (first specified time) at time t3. The processing content determination means 112 confirms the vehicle speed calculated by the first vehicle status confirmation means 113, and selects the processing pattern 3 according to the processing pattern determination table of FIG. 3 because the vehicle speed is 60 km / h or higher. Then, as process pattern 3, according to the process time allocation list of FIG. 4, a process execution time of 4.5 ms is determined for the ABS unit control calculation process and 0 ms is determined for the memory diagnosis process.

  Next, the processing content determination unit 112 collects the measurement time at the time t3 from the operation time measurement unit 114 and the diagnosis time measurement unit 115. Here, the control device operating time is 6 hr, and the memory diagnosis total time is 46 min. Since the control device operating time exceeds 6 hr (first specified time), the memory diagnosis total time is checked according to the flow of FIG. Here, since the total memory diagnosis time exceeds 45 min (second specified time), the processing is terminated according to the flow of FIG.

  Next, it is assumed that the vehicle speed falls below 60 km / h at time t4. The processing content determination means 112 confirms the vehicle speed calculated by the first vehicle status confirmation means 113, and selects the processing pattern 2 because the vehicle speed is 40 km / h or more and less than 60 km / h. Then, as process pattern 2, according to the process time allocation list of FIG. 4, a process execution time of 4 ms is determined for the ABS unit control calculation process and 0.5 ms is determined for the memory diagnosis process.

  Next, the processing content determination unit 112 collects the measurement time at the time t4 from the operation time measurement unit 114 and the diagnosis time measurement unit 115. Here, the controller operating time is 6 hr 30 min, and the memory diagnosis total time is 46 min. Since the control device operating time exceeds 6 hr (first specified time), the memory diagnosis total time is checked according to the flow of FIG. Here, since the total memory diagnosis time exceeds 45 min (second specified time), the processing is terminated according to the flow of FIG.

  Next, it is assumed that the vehicle speed falls below 40 km / h at time t5. The processing content determination means 112 confirms the vehicle speed calculated by the first vehicle status confirmation means 113, and selects the processing pattern 1 because the vehicle speed is less than 40 km / h. Then, as processing pattern 1, according to the processing time allocation list of FIG. 4, a process execution time of 3 ms is determined for the ABS unit control calculation process and 1.5 ms for the memory diagnosis process.

  Next, the processing content determination unit 112 collects the measurement time at the time t5 from the operation time measurement unit 114 and the diagnosis time measurement unit 115. Here, the control device operating time is 6 hr 40 min, and the memory diagnosis total time is 47 min. Since the control device operating time exceeds 6 hr (first specified time), the memory diagnosis total time is checked according to the flow of FIG. Here, since the total memory diagnosis time exceeds 45 min (second specified time), the processing is terminated according to the flow of FIG.

  In this way, in the first embodiment, the process executable time allocated to the ABS unit control calculation process and the memory diagnosis process at the predetermined time interval (5 ms) is determined in accordance with the wheel speed (that is, the vehicle speed). In addition, the memory diagnosis can finish the diagnosis of the entire area by the third specified time (8 hours).

  Next, with reference to FIG. 6, a normal process flow when the vehicle motion is suppressed will be described. In FIG. 6, the times are t0, t1, t2, t3, t4 ', t5', t4, and t5 in chronological order. At this time, it is assumed that at time t3, the control device operating time exceeds 6 hr and the memory diagnosis total time is 43 min.

  The processing of the processing content determination means 112 from time t0 to time t2 is the same as the processing flow when the vehicle motion that is the normal processing shown in FIG. The controller operating time and memory diagnosis total time at times t0, t1, and t2 are time t0: 5 hr 10 min and 35 min, time t 1: 5 hr 30 min and 41 min, and time t 2: 5 hr 50 min and 43 min, respectively.

  Next, it is assumed that the control apparatus operating time exceeds 6 hr (first specified time) at time t3. The processing content determination means 112 confirms the vehicle speed calculated by the first vehicle status confirmation means 113, and selects the processing pattern 3 according to the processing pattern determination table of FIG. 3 because the vehicle speed is 60 km / h or higher. Then, as process pattern 3, according to the process time allocation list of FIG. 4, a process execution time of 4.5 ms is determined for the ABS unit control calculation process and 0 ms is determined for the memory diagnosis process.

  Next, the processing content determination unit 112 collects the measurement time from the operation time measurement unit 114 and the diagnosis time measurement unit 115. Here, the control device operating time is 6 hr, and the memory diagnosis total time is 43 min. Since the controller operating time exceeds 6 hr (first specified time), the memory diagnosis total time is checked. Here, since the memory diagnosis total time does not exceed 45 min (second specified time), the first suppression means 116 controls the ABS unit 101 to brake the vehicle according to the flow of FIG. Decrease the vehicle speed (inhibit vehicle movement).

  Next, it is assumed that the vehicle speed falls below 60 km / h at time t4 '. The processing content determination means 112 confirms the vehicle speed calculated by the first vehicle status confirmation means 113, and since the vehicle speed is not less than 40 km / h and less than 60 km / h, the processing pattern 2 is determined according to the processing pattern determination table of FIG. Select. Then, as process pattern 2, according to the process time allocation list of FIG. 4, a process execution time of 4 ms is determined for the ABS unit control calculation process and 0.5 ms is determined for the memory diagnosis process.

  Next, the processing content determination unit 112 collects the measurement time from the operation time measurement unit 114 and the diagnosis time measurement unit 115. Here, the controller operating time is 6 hr 5 min, and the memory diagnosis total time is 43 min. Since the control device operating time exceeds 6 hr (first specified time), the memory diagnosis total time is checked according to the flow of FIG. Here, since it does not exceed 45 min (second specified time), the first suppression means 116 controls the ABS unit 101 to brake the vehicle according to the flow of FIG. 2, and the vehicle speed is 60 km / h. Make sure that it does not rise above (suppression of vehicle movement).

  Next, it is assumed that the memory diagnosis total time exceeds 45 min at time t5 '. The processing content determination means 112 confirms the vehicle speed calculated by the first vehicle status confirmation means 113, and since the vehicle speed is not less than 40 km / h and less than 60 km / h, the processing pattern 2 is determined according to the processing pattern determination table of FIG. Select. Then, as process pattern 2, according to the process time allocation list of FIG. 4, a process execution time of 4 ms is determined for the ABS unit control calculation process and 0.5 ms is determined for the memory diagnosis process.

  Next, the processing content determination unit 112 collects the measurement time from the operation time measurement unit 114 and the diagnosis time measurement unit 115. Here, the control device operating time is 6 hr 25 min, and the memory diagnosis total time is 45 min. Since the control device operating time exceeds 6 hr (first specified time), the memory diagnosis total time is checked according to the flow of FIG. Here, since it exceeds 45 min (second specified time), the first suppression means 116 controls the ABS unit 101 to stop braking the vehicle according to the flow of FIG. Exercise suppression release).

  After time t5 ′, the suppression of the vehicle motion is released and the vehicle speed returns to the original value. Therefore, the processing content determination unit 112 sets the processing pattern 3 that is 60 km / h or more according to the processing pattern determination table of FIG. Will be selected. Then, as process pattern 3, according to the process time allocation list of FIG. 4, a process execution time of 4.5 ms is determined for the ABS unit control calculation process and 0 ms is determined for the memory diagnosis process.

  Next, it is assumed that the vehicle is decelerated at time t4 and the vehicle speed falls below 60 km / h. The processing content determination means 112 confirms the vehicle speed calculated by the first vehicle status confirmation means 113, and since the vehicle speed is not less than 40 km / h and less than 60 km / h, the processing pattern 2 is determined according to the processing pattern determination table of FIG. Select. Then, as process pattern 2, according to the process time allocation list of FIG. 4, a process execution time of 4 ms is determined for the ABS unit control calculation process and 0.5 ms is determined for the memory diagnosis process.

  Next, the processing content determination unit 112 collects the measurement time from the operation time measurement unit 114 and the diagnosis time measurement unit 115. Here, the control device operating time is 6 hr 30 min, and the memory diagnosis total time is 45 min. Since the control device operating time exceeds 6 hr (first specified time), the memory diagnosis total time is checked. Here, since the memory diagnosis total time exceeds 45 min (second specified time), the processing is terminated.

  Next, it is assumed that the vehicle speed falls below 40 km / h at time t5. The processing content determination means 112 confirms the vehicle speed calculated by the first vehicle state confirmation means 113, and selects the processing pattern 1 according to the processing pattern determination table of FIG. 3 because the vehicle speed is less than 40 km / h. Then, as processing pattern 1, according to the processing time allocation list of FIG. 4, a process execution time of 3 ms is determined for the ABS unit control calculation process and 1.5 ms for the memory diagnosis process.

  Next, the processing content determination unit 112 collects the measurement time from the operation time measurement unit 114 and the diagnosis time measurement unit 115. Here, the control device operating time is 6 hr 40 min, and the memory diagnosis total time is 47 min. Since the control device operating time exceeds 6 hr (first specified time), the memory diagnosis total time is checked according to the flow of FIG. Here, since it exceeds 45 min (second specified time), the process is terminated.

  In this manner, in the present embodiment, the process executable time allocated to the ABS unit control calculation process and the memory diagnosis process at predetermined time intervals can be determined according to the vehicle speed, and the controller drive time can be determined. When the total time of the memory diagnosis has not reached the second specified time when the specified time of 1 is reached, it is determined that the memory diagnosis does not end at the third specified time (8 hours). By suppressing the vehicle motion, it is possible to reduce the load of the ABS unit control calculation processing, secure the memory diagnosis time, and finish the memory diagnosis in the entire region by the third specified time (8 hr).

  The first specified time is a time less than the third specified time. If the memory diagnosis is prioritized after the first specified time, the entire memory area is diagnosed within the third specified time. It is necessary to set the time that can be completed.

  In such a memory diagnosis method, when the vehicle speed increases, priority is given to ABS unit control calculation processing that is likely to increase the processing time in accordance with the vehicle speed by reducing the memory diagnosis processing executable time, and the vehicle speed is increased. When the time is low, it is possible to carry out a highly efficient memory diagnosis by securing a time during which the memory diagnosis process can be executed. In addition, when it is determined that the memory diagnosis does not end at the specified time, by suppressing the vehicle movement, the memory diagnosis time can be secured and the diagnosis of the entire memory area can be completed by the specified time. Reliability can be secured.

  As described above, according to the first embodiment, in the control device installed in the vehicle, the ABS control device 100 that is the first control device is a processing unit that performs various processes related to the first control device. The first microcomputer 110, the first recording device 111, which is a memory area connected to the processing means, the first vehicle status confirmation means 113 for judging the vehicle status, and the processing contents in the processing means are determined. Measurement content determination means 112 to perform, measurement processing by the processing means, a control calculation process for calculating a control amount related to the control of the control target, and a memory failure diagnosis process for diagnosing a memory failure in the first recording device 111 The operating time measuring means 114 as the first measuring means for measuring the first measuring time that is the sum of the operating times of the control device when the time is executed, and the second that is the total executing time of the memory failure diagnosis process It includes a diagnostic time measuring means 115 is a second measuring means for measuring a measurement time, and the first suppressing means 116 for suppressing the vehicle movement. Therefore, the memory diagnosis can be efficiently performed by changing the process executable time allocated to the ABS unit control calculation process and the memory diagnosis process at a predetermined time interval (for example, 5 ms) according to the vehicle situation. When it is determined that the memory diagnosis does not end by the third specified time within the specified time, the first suppressing means suppresses the vehicle movement by the control target of the first control device, thereby securing the memory diagnosis time. Then, the diagnosis of the entire memory area can be completed by the third specified time, and the reliability of the entire vehicle can be ensured.

  Also, in the first embodiment, when the ABS control device 100 is connected to a notification means to the outside such as a buzzer or a display device and the vehicle motion is suppressed, the total execution time of the memory diagnosis process is insufficient. The notification means may notify the outside that there is a possibility that the memory diagnosis will not end within the third specified time (8 hours). The vehicle movement can be safely suppressed, and the reliability of the entire vehicle can be secured.

Embodiment 2. FIG.
FIG. 7 is a diagram showing the configuration of a memory diagnostic apparatus that implements the memory diagnostic method according to the second embodiment of the present invention. In FIG. 7, the memory diagnostic device includes an ABS control device 100 as a first control device, and an engine control device 420 as a second control device connected to the ABS control device 100 via a network 400.

  In FIG. 7, reference numerals 100, 101, 110 to 115 are the same as those in FIG. In FIG. 7, the ABS control device 100 (first control device) and the engine control device 420 (second control device) are connected by a network 400.

  In the present embodiment, the ABS control apparatus 100 further includes first communication means 410 (first receiving means and second transmitting means) in addition to the configuration shown in FIG. A first suppression means 411 is provided instead of the first suppression means 116.

  The processing content determination means 112 of the ABS control device 100 in the present embodiment uses the vehicle speed information acquired by the first vehicle status confirmation means 113 from the second vehicle status confirmation means 433 of the engine control device 420 as the vehicle status. Using this, the process executable time (that is, the process time assigned to each process in the process pattern) in the first microcomputer 110 to be executed at a predetermined time interval is determined. The processing feasible time may be secured continuously or may be secured in a distributed manner. Here, the predetermined time interval is 5 ms.

  The first communication means 410 serves as an interface for performing transmission / reception of information with the engine control device 420.

  The first suppression means 411 is a means for suppressing the vehicle movement, and here, the vehicle movement suppression that instructs the second suppression means 434 of the engine control device 420 to suppress the vehicle movement. Send a notification signal.

  Other configurations and operations of the ABS control apparatus 100 are the same as those shown in the first embodiment, and thus description thereof is omitted here.

  An engine unit 421 and a vehicle speed sensor 422 are connected to the engine control device 420.

  The engine control device 420 includes a second microcomputer 431, a second recording device 432, a second vehicle state confirmation unit 433, a second suppression unit 434, and a second communication unit 435 (second reception unit). Means, first transmission means).

  The engine control device 420 actually has a necessary configuration other than the above-described means, but since it is not directly related to the second embodiment, the description thereof is omitted.

  The second microcomputer 431 performs various processes and various calculations based on a program recorded in advance in the second recording device 432.

  The second recording device 432 is configured by a nonvolatile memory or a volatile memory, and is a device that records data and programs. As a program, a procedure of engine unit control arithmetic processing, data necessary for it, and other processing procedures and data not directly related thereto are recorded.

  The second vehicle state confirmation unit 433 collects vehicle speed information from the vehicle speed sensor 422 as vehicle information indicating the vehicle movement state.

  The second suppression unit 434 controls the engine unit 421 that is the control target of the second suppression unit 434 according to the vehicle motion suppression notification signal from the first suppression unit 411, reduces the engine speed, and reduces the vehicle speed to 60 km / h or less. Decelerate.

  The second communication unit 435 serves as an interface for performing transmission / reception of information with the ABS control device 100.

  The engine unit 421 is a part that controls the engine speed based on the control from the engine control device 420. Since the internal configuration of the engine unit 421 is not related to the memory diagnosis method of the present invention, the description thereof is omitted. The internal configuration of the engine unit 421 is not particularly limited, and any existing conventional configuration can be applied.

  The vehicle speed sensor 422 may be of any type as long as the vehicle speed can be detected. However, the vehicle speed sensor 422 does not directly detect the vehicle speed, and the wheel speed sensor is similar to the first vehicle condition confirmation unit 113 in FIG. The vehicle speed information such as wheel speed information may be collected from (not shown in FIG. 7) and the vehicle speed may be calculated by calculation based on the information.

  Next, a processing flow of the processing content determination unit 112 will be described with reference to FIG.

  The processing in the processing content determination means 112 executes the flowchart shown in FIG. 8 every predetermined time, and the processing feasible time of the processing executed by the first microcomputer 110 (assigned to the processing pattern and each processing in the processing pattern). Processing time). Here, the predetermined time is 5 ms.

  Note that steps S202 to S205 in the flowchart of FIG. 8 are the same operations as steps S202 to S205 of the flowchart shown in FIG. However, in FIG. 8, in step S205, if the memory diagnosis total time is equal to or longer than the second specified time, the process proceeds to step S402, and if the memory diagnosis total time is less than the second specified time, the process proceeds to step S403. Different from FIG.

  In step S401, the first vehicle condition confirmation unit 113 of the ABS control apparatus 100 uses the vehicle speed information measured by the vehicle speed sensor 422 acquired by the second vehicle condition confirmation unit 433 of the engine control apparatus 420 as vehicle information. Receive and collect via network 400. Then, the process proceeds to step S202.

  In step S402, the first suppression unit 411 of the ABS control device 100 notifies the second suppression unit 434 of the engine control device 420 of the suppression of the vehicle motion, and the second suppression unit 434 of the engine control device 420 The engine speed is reduced to 60 km / h or less by controlling the engine unit 421 and reducing the engine speed to suppress vehicle movement. Then, the process ends.

  In step S403, the first suppression means 411 of the ABS control apparatus 100 notifies the second suppression means 434 of the engine control apparatus 420 that the vehicle motion is stopped, and the second suppression means of the engine control apparatus 420 is The engine unit 421 is controlled to stop the vehicle motion suppression process that reduces the engine speed as the vehicle motion suppression. Then, the process ends.

  The processing pattern determination table and the processing time allocation list for the processing pattern per 5 ms in the second embodiment are the same as the processing pattern allocation table for FIG. 3 and the processing time allocation list for the processing pattern per 5 ms in FIG. 4, respectively. Use things.

  In the ABS control device 100 having such a configuration, the ABS unit control arithmetic processing for controlling the ABS unit 101, the memory diagnosis processing of the first recording device 111, and other processing are performed within 5 ms. These are repeated.

  The operation according to the memory diagnosis method in the ABS control apparatus 100 will be described with reference to the time charts of FIGS. Here, vehicle speed information from the engine control device 420 is used as the vehicle status. 5 and 6, it is assumed that the driver is performing the same driving operation. As a precondition, it is assumed that the memory diagnosis needs to be completed for all areas by the third specified time (8 hours).

  Since the flow of the process in the case where the vehicle motion that is the normal process shown in FIG. 5 is not suppressed is the same as that of the first embodiment, the description thereof is omitted.

  Next, the flow of normal processing for suppressing vehicle motion will be described with reference to FIG. At this time, it is assumed that at time t3, the control device operating time exceeds 6 hr and the memory diagnosis total time is 43 min.

  The processing of the processing content determination means 112 from time t0 to time t2 is the same as the processing flow when the vehicle motion that is the normal processing of the first embodiment is not suppressed, and thus the description thereof is omitted. It is assumed that the control device operating time and the memory diagnosis total time are time t0: 5 hr 10 min, 35 min, time t 1: 5 hr 30 min, 41 min, and time t 2: 5 hr 50 min, 43 min, respectively.

  It is assumed that the control device operating time exceeds 6 hours at time t3. Since the vehicle speed is 60 km / h or higher, the processing content determination unit 112 selects the processing pattern 3 according to the processing pattern determination table of FIG. Then, as the processing pattern 3, in accordance with the processing time allocation list for the processing pattern per 5 ms in FIG. 4, a processing executable time of 4.5 ms is determined for the ABS unit control arithmetic processing and 0 ms is determined for the memory diagnosis processing.

  Next, the processing content determination unit 112 collects the measurement time. Here, the control device operating time is 6 hr, and the memory diagnosis total time is 43 min. Since the controller operating time has exceeded 6 hr (first specified time), the memory diagnosis total time is checked according to the flow of FIG. Here, since 45 minutes (second specified time) has not been exceeded, the first suppression means 116 of the ABS control apparatus 100 notifies the second suppression means 434 of the engine control apparatus 420 of the suppression of the vehicle motion, The second suppression means of the engine control device 420 controls the engine unit 421 to reduce the engine speed and decelerate the vehicle speed.

  Next, it is assumed that the vehicle speed falls below 60 km / h at time t4 '. Since the vehicle speed is 40 km / h or more and less than 60 km / h, the processing content determination means 112 selects the processing pattern 2 according to the processing pattern determination table of FIG. Then, as processing pattern 2, in accordance with the processing time allocation list for the processing pattern per 5 ms in FIG. 4, a processing executable time of 4 ms is determined for the ABS unit control arithmetic processing and 0.5 ms for the memory diagnosis processing.

  Next, the processing content determination unit 112 collects the measurement time. Here, the controller operating time is 6 hr 5 min, and the memory diagnosis total time is 43 min. Since the controller operating time exceeds 6 hr, the memory diagnosis total time is checked. Here, since it does not exceed 45 min, the first suppression means 116 of the ABS control apparatus 100 notifies the second suppression means 434 of the engine control apparatus 420 of the suppression of the vehicle motion, and the second suppression of the engine control apparatus 420. The suppression means controls the engine unit 421 to reduce the engine speed and decelerate the vehicle speed.

  Next, it is assumed that the memory diagnosis total time exceeds 45 min at time t5 '. Since the vehicle speed is 40 km / h or more and less than 60 km / h, the processing content determination means 112 selects the processing pattern 2 according to the processing pattern determination table of FIG. Then, as processing pattern 2, in accordance with the processing time allocation list for the processing pattern per 5 ms in FIG. 4, a processing executable time of 4 ms is determined for the ABS unit control arithmetic processing and 0.5 ms for the memory diagnosis processing.

  Next, the processing content determination unit 112 collects the measurement time. Here, the control device operating time is 6 hr 25 min, and the memory diagnosis total time is 45 min. Since the controller operating time exceeds 6 hr, the memory diagnosis total time is checked. Here, since it exceeds 45 min, the first suppression means 116 of the ABS control apparatus 100 notifies the second suppression means 434 of the engine control apparatus 420 that vehicle motion suppression has been stopped, and the engine control apparatus 420 first The second suppression means controls the engine unit 421 to stop decreasing the engine speed.

  In addition, after time t5 ′, the suppression of the vehicle motion is released and the vehicle speed returns to the original speed. Therefore, the processing content determination unit 112 selects the processing pattern 3 that is 60 km / h or more according to the processing pattern determination table of FIG. Will be. Then, as the processing pattern 3, in accordance with the processing time allocation list for the processing pattern per 5 ms in FIG. 4, a processing executable time of 4.5 ms is determined for the ABS unit control arithmetic processing and 0 ms is determined for the memory diagnosis processing.

  Next, it is assumed that the vehicle speed falls below 60 km / h at time t4. The processing content determination means 112 selects the processing pattern 2 because the vehicle speed is 40 km / h or more and less than 60 km / h. Then, as process pattern 2, according to the process time allocation list of FIG. 4, a process execution time of 4 ms is determined for the ABS unit control calculation process and 0.5 ms is determined for the memory diagnosis process.

  Next, the processing content determination unit 112 collects the measurement time. Here, the control device operating time is 6 hr 30 min, and the memory diagnosis total time is 45 min. Since the controller operating time exceeds 6 hr, the memory diagnosis total time is checked. Here, since it exceeds 45 min, the process is terminated.

  Next, it is assumed that the vehicle speed falls below 40 km / h at time t5. Since the processing content determination means 112 is less than 40 km / h, the processing pattern 1 is selected. Then, as processing pattern 1, according to the processing time allocation list of FIG. 4, a process execution time of 3 ms is determined for the ABS unit control calculation process and 1.5 ms for the memory diagnosis process.

  Next, the processing content determination unit 112 collects the measurement time. Here, the control device operating time is 6 hr 40 min, and the memory diagnosis total time is 47 min. Since the controller operating time exceeds 6 hr, the memory diagnosis total time is checked. Here, since it exceeds 45 min, the process is terminated.

  In this way, in the present embodiment, the process executable time allocated to the ABS unit control calculation process and the memory diagnosis process at a predetermined time interval can be determined according to the vehicle speed measured by the engine control device 420, When it is determined that the memory diagnosis does not end within the third specified time (8 hr) when the controller driving time reaches the first specified time, the processing content determining means 112 of the ABS control device 100 Then, the second suppression means 434 of the engine control device 420, which is a separate unit connected to the network, is notified of the suppression of the vehicle motion, and the second suppression means 434 of the engine control device 420 controls the engine unit 421, By suppressing the vehicle movement, the load of the ABS unit control calculation processing was reduced and the memory diagnosis time was secured. The memory diagnosis third specified time (-8 hr) can terminate the diagnosis of the entire region to.

  The first specified time is a time less than the third specified time. If the memory diagnosis is prioritized after the first specified time, the entire memory area is diagnosed within the third specified time. It is necessary to set the time that can be completed.

  In such a memory diagnosis method, when the vehicle speed increases, priority is given to ABS unit control calculation processing that is likely to increase the processing time in accordance with the vehicle speed by reducing the memory diagnosis processing executable time, and the vehicle speed is increased. When the time is low, it is possible to carry out a highly efficient memory diagnosis by securing a time during which the memory diagnosis process can be executed. Further, when it is determined that the memory diagnosis does not end at the specified time, the ABS control device 100 as the first control device controls itself by suppressing the vehicle movement from the engine control device 420 connected via the network 400. Without having means for suppressing vehicle movement, and even when there is no means for suppressing vehicle movement, the memory diagnosis time can be secured and diagnosis of the entire memory area can be completed by the specified time, The reliability of the entire vehicle can be secured.

  Further, in such a memory diagnosis method, the ABS control device 100 as the first control device does not use a means for confirming its own vehicle information, and even when there is no means for confirming the vehicle information itself. Priority is given to ABS unit control calculation processing that is likely to increase the processing time according to the vehicle speed, and when the vehicle speed is low, it is possible to carry out highly efficient memory diagnosis by ensuring the memory diagnosis processing executable time And the reliability of the entire vehicle can be secured.

  As described above, according to the second embodiment, in the control device installed in the vehicle, the first control device includes the processing means for performing various processes related to the first control device, and the processing means. A memory area to be connected, a vehicle status confirmation unit for determining the vehicle status, a processing content determination unit for determining the processing content in the processing unit, and a control amount related to control of the control target is calculated as the processing content of the processing unit Control arithmetic processing, memory failure diagnosis processing for diagnosing a memory failure, first measurement means for measuring a first measurement time that is the total operation time of the control device, and total execution time of the memory failure diagnosis processing A second measuring means for measuring the second measuring time, a first suppressing means for suppressing vehicle movement, a first receiving means for receiving vehicle information, and a second for notifying the suppression of vehicle movement. Transmission means, and a second means The control device includes a first transmission unit that transmits vehicle information, a second reception unit that receives a notification of suppression of vehicle movement, and a second suppression unit that controls its own control target to suppress vehicle movement. Is provided. Therefore, it is possible to efficiently perform memory diagnosis by changing the control execution time that is allocated to the control calculation process and the memory diagnosis process for calculating the control amount related to the control of the control target at a predetermined time interval according to the vehicle situation. In addition, when it is determined that the memory diagnosis does not end by the third specified time in the first specified time, the suppression of the vehicle motion is notified from the first suppressing means to the second suppressing means, and the second suppression is performed. The means suppresses the vehicle movement by the control target of the second control device, so that the memory diagnosis time of the first control device is secured and the diagnosis of the entire memory area is completed by the third specified time. And the reliability of the entire vehicle can be secured.

  In the second embodiment, the engine control device 420 provides the vehicle information and suppresses the vehicle motion. However, the same effect can be obtained even if these are implemented by separate control devices.

  Furthermore, in the second embodiment, the collection of vehicle information in the ABS control device 100 is connected not only to the engine control device 420 but also to a plurality of other control devices and only when necessary not permanently connected to the network. If the vehicle information is comprehensively determined from the apparatus, it is possible to more finely switch the process executable time allocated to the control calculation process and the memory diagnosis process in the ABS control apparatus 100 based on more accurate vehicle information.

  Further, in the second embodiment, when a notification means to the outside such as a buzzer or a display device is connected to the ABS control device 100 or the engine control device 420 and the vehicle motion is suppressed, the notification means notifies the outside. By doing so, the vehicle movement can be more safely suppressed for the driver and surrounding vehicles.

  Furthermore, in the first and second embodiments, the vehicle motion is suppressed from the ABS control device 100 and the engine control device 420, but the present invention is not limited to this. In other control devices, if the vehicle motion can be suppressed by controlling the control target, the control target can be used.

  Further, in the first and second embodiments, it is assumed that the memory diagnosis is finished by the third specified time. However, when the third specified time is reached, the total operation time of the control device is reached. By resetting the first measurement time, the second measurement time, which is the total execution time of the memory failure diagnosis process, and repeating the completion of the memory failure diagnosis process for all memory areas by the third specified time again, In addition, the reliability of the entire vehicle can be ensured.

  Furthermore, in the first and second embodiments, when the second measurement time, which is the total execution time of the memory failure diagnosis process, reaches the second specified time, the control device operation time and the memory diagnosis total time are reset. Then, the reliability of the entire vehicle can be further ensured by repeating the completion of the memory failure diagnosis process for all the memory areas again by the third specified time.

  In the first and second embodiments, after the second measurement time, which is the total execution time of the memory failure diagnosis process, reaches the second specified time, the memory failure diagnosis process is not performed and the control is performed. The memory diagnosis can be efficiently performed by performing only the control calculation process for calculating the control amount related to the target control.

  Furthermore, in the first and second embodiments described above, the vehicle motion suppression is not performed and released in situations where there is a high possibility of risking the driver during acceleration / deceleration, steering, etc. Reliability can be ensured.

  Further, in the first and second embodiments, by carrying out the execution and release of the suppression of the vehicle motion step by step, it is possible to suppress a sudden change in the vehicle motion and to further improve the reliability of the entire vehicle. Can be secured.

  DESCRIPTION OF SYMBOLS 100 ABS control apparatus (1st control apparatus), 101 ABS unit, 102 Wheel speed sensor, 110 1st microcomputer, 111 1st recording apparatus (memory area | region), 112 Process content determination means, 113 1st vehicle condition Confirmation means, 114 operation time measurement means, 115 diagnosis time measurement means, 116 first suppression means, 400 network, 410 first communication means, 411 first suppression means, 420 engine control device, 421 engine unit, 422 vehicle speed Sensor, 431 second microcomputer, 432 second recording device, 433 second vehicle status confirmation means, 434 second suppression means, 435 second communication means.

Claims (6)

A memory diagnostic device mounted on a vehicle and provided with a control device,
The control device includes:
A diagnosis target memory mounted on the vehicle;
Processing means for performing a control calculation process for calculating a control amount for controlling the vehicle movement of the vehicle, and a memory diagnosis process for diagnosing the presence or absence of a failure of the memory;
Vehicle status confirmation means for obtaining vehicle information indicating the vehicle motion status of the vehicle;
Processing content determination means for determining an execution time distribution between the control calculation processing and the memory diagnosis processing performed by the processing means based on the vehicle information acquired by the vehicle status confirmation means;
First measuring means for measuring a first measuring time which is a total operating time of the control device;
A second measuring means for measuring a second measuring time which is a total execution time of the memory diagnosis process;
First suppressing means for suppressing vehicle movement of the vehicle,
The control calculation process is a process in which a required processing time varies depending on the vehicle movement situation,
The processing content determination unit drives the first suppression unit when the first measurement time exceeds the first threshold and the second measurement time does not satisfy the second threshold. A memory diagnostic apparatus characterized by suppressing a vehicle movement of the vehicle to suppress a processing time required for the control calculation process and to increase an execution time distribution of the memory diagnostic process. A second control device connected to the control device via a network;
The second control device includes:
Vehicle status detection means for detecting the vehicle motion status of the vehicle;
The memory diagnostic apparatus according to claim 1, further comprising: a transmission unit configured to transmit the detected vehicle movement status information as the vehicle information to the vehicle status confirmation unit of the control device. The memory diagnosis device according to claim 1, wherein the first suppression unit of the control device controls its own control target in order to suppress the vehicle motion. The first suppression means of the control device transmits a vehicle motion suppression notification signal instructing the second control device to suppress vehicle motion,
The second control device includes:
Receiving means for receiving the vehicle motion suppression notification signal;
In order to suppress the vehicle movement, the second suppression means for controlling its own control object,
The memory diagnosis apparatus according to claim 2, wherein the vehicle movement is suppressed by the second suppression unit of the second control apparatus. The control device includes:
5. The memory diagnostic apparatus according to claim 1, further comprising notification means for notifying outside that the vehicle motion is to be suppressed. 6. A memory diagnosis method for diagnosing the presence or absence of a failure of a memory mounted on a vehicle,
Vehicle status confirmation step for obtaining vehicle information indicating the vehicle motion status of the vehicle;
Implementation time allocation between a control calculation process for calculating a control amount for controlling vehicle movement of the vehicle based on the vehicle information acquired in the vehicle status confirmation step and a memory diagnosis process for diagnosing the presence or absence of a failure of the memory A processing content determination step for determining
A first measurement step for measuring a first measurement time which is a total operation time of the control device up to the present time;
A second measurement step of measuring a second measurement time which is a total execution time of the memory diagnosis processing up to the present time;
A first determination step of determining whether or not the first measurement time is less than a first threshold;
A second determination step of determining whether or not the second measurement time is equal to or greater than a second threshold when the first measurement time is equal to or greater than a first threshold;
When the first measurement time is equal to or greater than the first threshold and the second measurement time is less than the second threshold, the first suppression means is driven to suppress the vehicle motion of the vehicle. And a vehicle motion suppression step of suppressing a processing time of the control calculation process that changes a required processing time according to the vehicle motion state and increasing an execution time distribution of the memory diagnosis process. Memory diagnostic method.

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