JPH04182803A - Computer for event driving type vehicle control - Google Patents

Abstract

PURPOSE:To obtain the computer which detects an event fast and is low in cost and high in reliability by providing a processor for event processing, deciding events of high generation frequency at all times, and deciding events which are low in generation frequency by receiving an instruction from a processor for control arithmetic. CONSTITUTION:The processor 1 for event processing decides the events of high generation frequency registered in an event list 2 at all times according to input signals SI from various sensors and decide the events of low generation frequency only when an event decision request means 5 in the processor 4 for control and arithmetic makes a request. The processor 4 performs the arithmetic of a control program corresponding to an event according to the detection result of the processor 1 when the event is generated, and outputs an output signal SO. This constitution enables the events to be decided at a high speed, and reduces the cost and improves reliability.

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a computer used in a vehicle control device, and in particular, a computer for quickly detecting a driver's operation or a change in the driving state of a vehicle, that is, an event, and responding to the change. The present invention relates to a computer that responds immediately and performs arithmetic processing to execute optimal control operations without time delay.

[Prior art]

Various devices have been proposed in the past for controlling various types of vehicles using microcomputers (
For example, JP-A-55-60639, JP-A-55-13
4732, JP-A-54-58116, and many others)
.

In a vehicle control device, it is necessary to immediately detect a driver's operation or a change in the driving state of the vehicle, that is, an event, and immediately execute control in accordance with the detected event. An example of using the word "Pavent" in the above sense is "IEE Transactions on Software Engineering (IEEE TR
ANSACTIONS 0NSOFTWARE ENG
INEERING, VOL, 5E-6, NO, 1, JA
NUARY1980, “Specifying So
ftware Requirements forCo
complex System: New Techni
ques and their application
There is “)”.

[Problem to be solved by the invention]

However, in conventional control devices using microcomputers, processing that should be executed immediately in response to the above events, that is, event processing, is executed in a fixed periodic interrupt routine or in the background. I had no choice but to do this in the program's execution loop.

As a result, there is a time delay between the actual occurrence of an event and its detection and processing, leading to deterioration of vehicle control characteristics such as engine exhaust purification performance and fuel efficiency, and a delay in response that is unpleasant for the driver. This causes unexpected reactions. Furthermore, since the operation of the control equipment differs greatly due to subtle timing discrepancies, it becomes difficult to verify the control equipment from the outside, and furthermore, it requires unnecessarily complicated program logic to realize it, so it is difficult to develop a control program. This requires a large amount of man-hours when creating a program, and because the flow of logic that is separated in time and space does not match the human thinking characteristics, it is easy to make mistakes when creating a program, leading to a decrease in reliability. There is a risk. In addition, such programs have many negative effects, such as making it difficult for third parties to read them and causing deterioration in maintainability.

In order to solve the above problem, the present applicant et al. has provided an event processing processor dedicated to event processing in addition to a control calculation processor that executes calculation processing, and has determined that the occurrence of an event is determined according to the calculation cycle of the control calculation processor. has already filed an application (Japanese Patent Application No. 2-237153) for an event-driven vehicle control computer configured to perform independent detection.

In the above-mentioned vehicle control computer, there is no need for the control calculation processor to detect events according to the calculation cycle as in the conventional case, and therefore events can be detected at high speed.

There is no fear that other calculations will be hindered by the occurrence of a huge number of interrupts. Furthermore, since there is no need for an event detection program that is complicated and difficult to recognize and understand, it also facilitates program development and maintenance.

However, in the device described in the above-mentioned prior application, the event processing processor has a list of all events, and is configured such that all events are always subject to determination. Therefore, when determining events, it takes time to sequentially compare them until a matching event appears from a predetermined group of events, so if there are many events to be determined, event detection will be slow. In some cases, there is a fear that the occurrence of an event may be missed. Furthermore, in order to perform comparisons in a short time, it is necessary to install a large number of comparators in parallel, which increases the cost of the system and is unfavorable from the viewpoint of reliability.

The present invention further improves the prior art as described above, and provides a low-cost, highly reliable event-driven vehicle control computer that detects events even faster, does not require a large number of comparators, etc. The purpose is to

[Means to solve the problem]

In order to achieve the above object, the present invention is configured as described in the claims.

FIG. 1 is a functional block diagram of the present invention as set forth in claim 1.

In FIG. 1, an event processing processor 1 detects which event has occurred based on input signals SI from various sensors.

That is, the event processing processor detects the occurrence of a transient in arbitrary data on an address, determines a set of transients in which the occurrences of the transients are arranged in a predetermined order, and identifies the set of transients arranged in a predetermined order. It detects which of a set of transients corresponds to each event, and outputs it as the occurrence of the predetermined event.

Further, the event processing processor 1 makes a judgment based on a constantly judged event list 2 that judges the occurrence of events with a high occurrence frequency, and a request from an event judgment requesting means 5 in the control calculation processor 4, which will be described later. and an interrupt determination setting means 3 for adding an event to be performed. Events with a high frequency of occurrence registered in the constant determination event list 2 are always determined, but events with a low frequency of occurrence are determined by the event determination requesting means 5 in the control calculation processor 4.
The event is determined only when there is a request.

Reference numeral 4 denotes a control calculation processor 1 which normally performs control calculations according to a predetermined program and outputs a control output signal SO obtained as a result. Further, when an event occurs, based on the check result of the event processing processor 1, calculations of a control program corresponding to the generated event are executed, and an output signal obtained at the time of the event occurrence is outputted as a result. Further, the control calculation processor 4 includes an event determination requesting means 5, and the event determination requesting means 5 instructs the event processing processor 1 regarding the timing of determination for events that occur less frequently.

Next, the invention according to claim 2 is provided with an event-dedicated bus for transferring event-related addresses and data in addition to the normal main bus, and the event processing processor is configured to transfer event-related addresses and data via the event-dedicated bus. It is configured to monitor only specific data related to events.

[Effect]

As described above, in the present invention, in addition to the control calculation processor that executes calculation processing, an event processing processor dedicated to event processing is provided, and the occurrence of an event is detected independently of the calculation cycle in the control calculation processor. It is configured to do so.

That is, when a transient (transition) occurs in arbitrary data on an address, the event processing processor detects a set of transients in which the occurrences of the transient are arranged in a predetermined order, and the event processing processor detects a set of transients in which the occurrence of the transient is arranged in a predetermined order It determines which event the event corresponds to, and outputs it as the occurrence of the predetermined event.

Furthermore, in the invention described in claim 1, events are separated into those with a high frequency of occurrence and those with a low frequency of occurrence, and events with a high frequency of occurrence are constantly determined by the event processing processor, and events with a low frequency of occurrence are determined by the event processing processor. The event processing processor is configured to instruct the event processing processor regarding the timing of the determination from the event determination requesting means in the control processor, and the event processing processor performs the determination only after receiving the request.

With the above configuration, it is no longer necessary for the control calculation processor to detect events according to the calculation cycle as in the past, so events can be detected at high speed, and it is possible to avoid the occurrence of a huge number of interrupts. There is no risk of interfering with other calculations. Further, since a complicated event detection program that is difficult to recognize and understand is unnecessary, the development and maintenance of the program becomes easier.

In addition, by configuring the system so that frequently occurring events are constantly judged by the event processing processor, and infrequently occurring events are judged only after receiving a request from the event judgment requesting means, events that are constantly judged are The number of species can be significantly reduced. Therefore, event determination can be performed at high speed, and even events with low occurrence frequency can be reliably detected. Furthermore, since there is no need to install a large number of comparators, low cost and high reliability can be achieved.

Further, in the invention according to claim 2, in addition to the normal main bus, there is provided an event-dedicated bus for transferring event-related addresses and data, and the event processing processor transfers the event-related addresses and data via the event-dedicated bus. By configuring the system to monitor only specific data related to events, the event processing processor can reduce the amount of data that must be monitored. can be greatly simplified.

[Embodiments of the invention]

FIG. 2 is a block diagram of one embodiment of the present invention, and corresponds to the invention of claim 1.

In FIG. 2, 11 is an event processing processor;
2 is a control calculation processor. Further, the RAM 13 and the ROM 14 are each used by the event processing processor 1.
The RAM 15 and ROM 16 are memories dedicated to the control calculation processor 12, respectively. Further, the RAM 17 is a memory shared by the event processing processor 11 and the control calculation processor 12, and allows both processors to read and write the same information.

Also, SI, ~SI. are input signals from various sensors, such as engine intake air amount signal, rotational speed signal,
Cooling water temperature signal, throttle opening signal.

These are idle switch signals, air-fuel ratio signals, etc. Also, S
O~SO are output signals to various actuators, such as fuel injection signals, brake control signals, and speed change signals to electronically controlled transmissions.

The bathing power device 18 also receives the various input signals SI, .
S.I. (If necessary, input after A/D conversion)
In addition, various output signals 801 to SO of the calculation results are output.

Furthermore, signals are exchanged between the above-mentioned components via a main bus 19 that includes an address bus and a data bus.

Next, FIG. 3(A) is a block diagram showing an example of calculation contents in the event processing processor 11, and FIG. 3(B) is an example of an event management program.

The operation of the event processing processor will be explained below based on FIG.

In FIG. 3(A), 2o is a digital comparing means, which compares predetermined data (in units of bits, words, etc.) of an arbitrary number of bits on the memory (RAM 17). This digital comparison means 20 compares a predetermined value in the event management program 24 with the data on the memory, and an address coincidence detection means 20-1 that detects that a predetermined address has been written to the memory. It is comprised of data comparing means 20-2 which outputs the result as a status code.

Further, 21 is a transient detection means, which inputs the output of the digital comparison means 20, a predetermined bit on the memory, or the state of an input signal and compares it with the past state, and detects the direction of the data state change (on-off). , off → on, both directions, etc.) and outputs it as a transient signal.

Further, reference numeral 22 denotes an event determining means, which determines which event the order of occurrence of transients corresponds to, which is determined in advance, and finally outputs the result as an event detection signal.

Note that the event processing processors can also be configured to be internally connected in series to detect a more complex event occurrence sequence.

In addition, 23 is an event management means, and 20 to 22 above
The event management program 24 controls the cooperative operation of the event management program 24.

Further, 25 is a constant judgment event list, which is a list of events to be judged excluding events with low frequency of occurrence, as will be described in detail later. Note that, in practice, this constant determination event list 25 is included in the event management program 24, but for convenience of explanation, it is displayed separately. This constant judgment event list 2
Regarding the event in item 5, the event determination described in items 20 to 24 above is always performed.

Further, 26 is an interrupt determination setting means, and as will be described in detail later, when there is a determination request from the event determination requesting means in the control calculation processor (not shown) regarding an event not included in the above-mentioned constant determination event list 25. To,
Generates an interrupt to determine the event.

Note that the event management program 24 may be configured as shown in FIG. 3 (
It is as shown in B). This example illustrates a case where an "acceleration event" is determined when the idle switch changes from on to off (throttle valve changes from closed state to open state).

Hereinafter, first, event determination regarding events in the constant determination event list will be described using an acceleration event as an example.

First, the driver's accelerator operation is written into the memory as an on/off switch signal (idle switch) indicating that the throttle is fully closed. Although not shown in FIG. 3, the input/output device 18 shown in FIG. 2 transfers the data in the input register to the memory to which the input register is allocated. As a result.

A write operation to the memory is performed and a WR signal r is generated at the address of the idle switch.

Upon receiving this signal, the address match detection means 20-1 detects whether there is an address that matches the address specified by the event management program 24.

When a match is detected, the comparing means 20-2 normally compares the comparison data in the event management program with the data at the address in the memory where the match was detected.
In this example, since it is bit data, the comparison means 2o
-2 is not used and immediately the transient detection means 21
is input.

If the comparison data is normal data, the comparison means 20-2 compares the comparison value of the set in which address matching was detected and the data of the address written on the memory, and the comparison result is converted into a binary value. It is input to the transient detection means 21 as an output.

The transient detection means 21 detects a pre-designated on-state.
Detects a change in off state (transient when the accelerator is pressed from a fully open state, i.e., an immediate event in this case), and outputs a predetermined output corresponding to that event, i.e., an acceleration event detection signal (aecel-event) in this case.
occurs.

At the same time, for order comparison, the state of the idle switch at this time is stored in the memory (secured for each defined event) of the event processing processor 11.

Note that in this example, since a single transient is directly defined as an event, there is no operation of the event determining means 22.

Next, event determination regarding events not included in the regular determination event list will be explained.

FIG. 4 is a block diagram of an embodiment showing the contents of the event processing processor 11 and the control calculation processor 12. In FIG. 4, the constant judgment event list 3o is a list of events obtained by excluding events with low occurrence frequency from all events, and is provided in the event processing processor 11 (for example, stored in the ROM 14 in FIG. 2). .

Further, the event determination requesting means 32 is a function of the control calculation processor 12, and issues a request for event determination to the event processing processor 11 when it becomes necessary to detect an event that is not in the constant determination event list 30. It is.

The 1-interrupt determination setting means 31 is a function of the event processing processor 11, and adds a determined event based on an event determination request from the control calculation processor 12.

Normally, as explained in FIG. 3, the event processing processor 11 uses the constant judgment event list 30 that excludes events with low occurrence frequency from all events.
Judging events. When it becomes necessary to judge an event that is not on the regular judgment event list, the event judgment requesting means 3 of the control calculation processor 12
2, an event determination request is issued to the event processing processor 11.

In the event processing processor 11, the interrupt determination setting means 31 adds an event to be determined based on the event determination request from the control calculation processor 12.

A detailed explanation will be given below based on an example.

Examples of events to be included in the constant determination event list and events to be excluded from the constant determination event list 30 because of their low frequency of occurrence include, for example, two events: fuel cut (fuel cutoff during deceleration).

The purpose of fuel cut is to improve exhaust purification performance and save fuel during vehicle deceleration, and is to stop fuel supply when deceleration satisfies predetermined conditions.

There are two conditions for entering a fuel cut: In other words, ■ If the idle switch is turned on (throttle valve closed) when the vehicle speed and engine speed are respectively above the predetermined values, ■ After the idle switch is turned on, the vehicle speed and engine speed are If each exceeds a predetermined value, then

The above case (2) is a case where the throttle valve is closed from a high speed and deceleration begins, and is a state that occurs during normal deceleration. Therefore, the frequency with which this event ■ occurs is high. On the other hand, (2) above means that when the throttle valve is closed, the vehicle speed and rotational speed are lower than the predetermined value when the throttle valve is closed, but they gradually accelerate and reach the predetermined value or higher. This is the case. Since such a driving condition rarely occurs, the frequency with which this event (2) occurs is significantly lower than that of the above-mentioned event (2).

As mentioned above, event ■ occurs frequently, so it is included in the constant judgment event list, but event ■ occurs infrequently, so there is no need to constantly monitor it. only need to be monitored. Therefore, the event ■ is removed from the constant determination event list 30 of the event processing processor 11, and instead, the step of ``determine the event ■ when a transient that the idle switch is turned on'' occurs is added to the program flow of the control calculation processor 12. Put it in.

With the above settings, as shown in Figure 5, '
When a transient such as "idle switch is turned on" occurs, the predetermined processing S is completed, and it becomes necessary to determine whether or not event The event determination requesting means 32 of the event processing processor 12 issues an event determination request to the event processing processor 11 to determine whether the event is an event (2) or not.

In response to the above request, the event processing processor 11 inserts ``event ■'' at the beginning of the judgment event.Then, ``idle switch is on,'' 7 vehicle speed is above a predetermined value, and 6 rotation speed is above a predetermined value.'' The event ■ is determined based on the condition, and the result is returned to the control calculation processor 12.The control calculation processor 12, according to the result,
If the event (2) is the event, the fuel is cut off (processing Y), and if the event is not the event (2), the fuel supply is continued (processing N).

Next, a method of interrupting a determination event will be explained based on FIG.

In FIG. 6, the left side is a constant determination event list, and normally, for example, determinations are made in order from top to bottom.

Also, the right side is an interrupt determination event list.

When a request to 'judge event A' is received from the control calculation processor 12, event A is selected from the 1-interrupt judgment event list, and the 1-judge is performed by interrupting before the judgment order in the regular judgment event list. Let's do it.

Furthermore, multiple interrupts may occur. For example, if it becomes necessary to judge event B before the detection of event A is finished, the judgment is made before the regular judgment event list, as described above. Further, when it is not known whether event A or event B will occur, it is conceivable to make an interrupt determination for both events A and B.゛Although in this example, for simplicity, the event (transient) was explained as detecting an exclusive state of the same signal, the effect is greater when multiple transients are combined and judged as one event. Of course.

Next, the invention according to claim 2 will be explained.

In the event-driven vehicle computer described in Japanese Patent Application No. 2-237153, an event processing processor and a control calculation processor exchange signals via a main bus. And on the main bus,
Program data, instruction address data, memory
Since various addresses and data such as addresses and data are transferred, a large amount of hardware is required to monitor all of them with an event processing processor.

That is, in the event processing processor, it is necessary to compare all of the transferred addresses with the addresses of event data specified in advance to determine whether they match or not. Therefore, in the configuration of the event-driven vehicle computer described above, the hardware of the event detection part of the event processing processor becomes large-scale.
There is also the fear that event processing will be delayed.

The invention set forth in claim 2 has been made to solve the above problem, and will be described in detail below.

FIG. 7 is a block diagram of an embodiment of the invention according to claim 2. In FIG. 7, 40 is a dedicated event bus. This event dedicated bus 40 is provided independently of the normal main bus 19, and is a dedicated bus for transmitting event-related addresses and data between the event processing processor 11 and the arithmetic processing processor 12. be. In addition, the inside of the RAM 17 includes a normal address and data section 7-1 and an event-only section 17.
-2. In addition, the same reference numerals as in FIG. 2 indicate the same parts.

On the main bus 19, operations similar to those of a normal processor are performed. For example, as shown in (19) in FIG. 8, address A and data D are transferred one after another (actually, this is not necessarily the order). Examples of the above addresses include memory and boat addresses.

In addition, register instructions are also included. Furthermore, the data includes program data, input data, calculation result data, output data, and the like. (19) in FIG. 8 schematically shows how the various addresses A and their associated data D as described above are transferred one after another according to the microprogram.

On the other hand, address A and data D are transferred to the event dedicated bus 40 in the same manner as described above, but in this case, as shown in (4o) in FIG. “Changes in status that should be monitored”
That is, only the address and data related to the event.

Further, the RAM 17 is divided into two parts: a normal part 17-1 and an event-only part 17-2.

The normal section 17-'1 stores data unrelated to the event, and transfers it from the control calculation processor 12, a timer (not shown), etc. via the normal main bus 19. stores data related to events, and transfers the data to the control calculation processor 12, event processing processor 11, etc. via the event dedicated bus 40. Furthermore, given a program,
Since you can see which data is related to the event,
All you need to do is to allocate memory accordingly.

The event processing processor 11 includes an event dedicated bus 4
0, determine the type of data based on the difference in addresses,
Once the type of data has been identified, it is then determined whether the range and changes in the data correspond to an event. Then, in accordance with the result, processing signals including an interrupt signal and a memory rewriting signal, and a data designation signal designating data related to the event are sent to the control calculation processor 12 via the event dedicated bus 40.

In order to achieve the above bus configuration, parallelization means (leveling microprogram, etc.) or pipeline means are required to transfer event-related data and non-event-related data in parallel. Although it is necessary,
These can be realized using normal parallelization and pipelining techniques.

9 shows a circuit for comparing addresses in the event processing processor 11, (A) shows the case where the event dedicated bus is not used, and (B) shows the case where the event dedicated bus according to the present invention is used. In the case of Figure 9 (A), since a large number of address data are transferred one after another, there is no time to compare them serially, so a large number of comparators 50-1 to 50-n are connected in parallel. It is necessary to arrange them in

On the other hand, when an event-dedicated bus is used, since the amount of data is small, one comparator 50 and one register 51 are used, and the address of the register 51 is set as shown in (B). Even if you change them one by one and compare them serially, there is plenty of time. Therefore, hardware can be significantly reduced. Note that in the above configuration, it is conceivable that the address and data may be close to each other due to the flow of address and data related to an event, so it may be possible to temporarily store the address and data in a FIFO register.

Next, an example will be explained.

The first ON is a diagram showing an actual example of parallel processing in the invention described in claim 2, and (19゛) is a diagram showing the main bus 1.
Addresses and data transferred through 9 and (40) schematically show addresses and data transferred through the event dedicated bus, respectively.

This calculation calculates the basic fuel injection time TP via the main bus 19, and detects an acceleration event via the event dedicated bus, and when accelerating, adds the acceleration correction numerator e to the basic fuel injection time The case is shown in which the actual fuel injection time Ti is calculated by adding .

First, (19) shows the calculation of the basic fuel injection time of the engine, and the case where the address and data are transferred to calculate the basic fuel injection time 'rp from the intake air amount Q and the engine speed N. , and are transferred in the following order (,) to (j).

(a) Address A9゜ to put Q into memory (b)
Transfer of Q data D9 (from external input or internal register).

(c) Address A n e (
d) Transfer of data Dn of N.

(e) Address Au specifying the ALU.

(f) Transfer Dq to the ALU register.

(g) Transfer Dn to the ALU register.

(h) Compare the operation instruction to the ALU (Iu).

(i) Address A for storing the calculation result TP into memory
t.

(j) Store Tp in memory.

Next, (4o) shows that the data of the accelerator opening degree A and the cooling water temperature Tw are transferred to the event processing processor 11.
Now, a case will be shown in which stiffness data is monitored to determine an acceleration event, and the data is transferred in the following order (a') to (k'). In this case, the addresses and data to be transferred need only be the above A and Tw.

(a') Memory address Aa for accelerator opening data Da.

(b') Transfer of Da (monitored by the event processing processor 11).

(C') Memory address Aw for cooling water temperature data DIl+.

(d') Transfer of D- (event processing processor 11 monitors → event occurrence detected from b' and d').

(C') Transfer of event generation instruction Ie (from event processing processor 1 to control calculation processor 12).

(f') Transfer of event number data Di (from event processing processor 11 to control calculation processor 12).

This specifies the event type. The above Ie and Di constitute an event processing signal.

(g') Event processing instruction Ie' (valid within the control calculation processor 12) (h') Address (Aa') specifying the ALU.

(i') Transfer Da to the ALU register.

(j') Transfer Dw to the ALU register.

(k') Output the operation instruction Iu' to the ALU.

Below, calculations and processing at the time of an acceleration event will be performed. That is, calculate the acceleration correction numerator e of the fuel injection time corresponding to the acceleration event, and apply it to the basic fuel injection time "rp".
is added to calculate the actual fuel injection time Ti.

Note that the steps after (g') above can be performed using the main bus ]9, but since the main bus 19 is responsible for calculating the basic fuel injection time "rp" as described above, for parallelization (g') ') to (k').

As mentioned above, when a dedicated event bus is provided, the number of Atto I/S and data for event determination is reduced, which simplifies the hardware for event detection and enables quick event determination. I can do it. Furthermore, normal calculations and event processing calculations in the control calculation processor can be performed in parallel.

However, since the two buses are controlled in parallel, the horizontal direction of the microprogram is approximately doubled, and the two buses and A1. , U, etc., in order to control the pipeline,
Required for pipeline registers.

〔Effect of the invention〕

As explained above, in the present invention, in addition to the control calculation processor that executes calculation processing, an event processing processor dedicated to event processing is provided, and the occurrence of an event is controlled independently of the calculation cycle of the control calculation processor. configured to detect it. Therefore, it is no longer necessary for the control calculation processor to detect events according to the calculation cycle as in the past, so it is possible to detect events at high speed. There's no fear. Also.

This eliminates the need for event detection programs that are complicated and difficult to recognize and understand.

Program development and maintenance will also become easier.

Furthermore, in the invention described in claim 1, events are separated into those with a high frequency of occurrence and those with a low frequency of occurrence.

Events with a high occurrence frequency are constantly judged by the event processing processor, and events with a low occurrence degree are judged by the event judgment requesting means in the control calculation processor, which instructs the event processing processor to judge the timing. The processor is configured to make a determination only after receiving a request. Therefore, the types of events that are constantly determined can be significantly reduced, so that event determination can be performed at high speed, and even events with a low degree of occurrence can be reliably detected. Furthermore, since there is no need to install a large number of comparators, low cost and high reliability can be achieved.

In addition, in the invention described in claim 2, by providing an event-dedicated bus for transferring event-related data in addition to the normal main bus, event detection can be performed in parallel and separately from the transfer of data not related to events. can be done. Therefore, event detection can be performed quickly.

You only need to monitor data related to events.

An excellent effect can be obtained in that the hardware for monitoring can be greatly simplified.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the functions of the present invention, FIG. 2 is a block diagram of an embodiment of the present invention, FIG. 3 is a block diagram showing the functions of the event processing processor, and FIG. 4 is the event processing processor. and a block diagram showing the functions of the control calculation processor, FIG. 5 is a flowchart of an example of an event determination request from the control calculation processor, and FIG. 6 is a diagram of an example of the constant determination event list and the interrupt determination event list. , FIG. 7 is a block diagram of another embodiment of the present invention, FIG. 8 is a schematic diagram showing the state of data transfer within the main bus and the event dedicated bus, and FIG. 9 is a diagram of a comparison circuit for detecting the occurrence of an event. An example diagram, FIG. 10, is a schematic diagram showing an example of the state of data transfer within the main bus and the event dedicated bus. <Explanation of symbols> 1... Processor for event processing 2... Constant judgment event list 3... Interrupt judgment setting means 4... Processor for control calculation 5... Event judgment requesting means SI... Input Signal SO...Output signal 11...Event processing processor 12...Control calculation processor 13, 15, 17...RAM 14, 16...ROM 18...I/O device 19...Main Bus 20...Digital comparing means 20-1...Address matching detecting means 20-2...Data comparing means 21...Transient detecting means 22...Event determining means 23...Event managing means 24... . . . Event management program 25 . . . Constant judgment event list 26 . . . Interrupt judgment setting means 30 . . . Constant judgment event list 31 . . . Interrupt judgment setting means 32 . . . Event judgment requesting means 40 . Event dedicated bus

Claims (1)

[Claims] 1. Inputting sensor signals that detect various driving conditions of the vehicle and operating conditions of the driver, performing various control calculations necessary for controlling the vehicle based on the above signals, and applying the above calculation results to In a vehicle control computer that sends control signals based on the data to various actuators for vehicle control, there is an event processing processor that detects operations during driving or changes in vehicle driving conditions, that is, events from data on addresses; a control calculation processor that executes calculation processing based on the detection result of the processing processor and issues an event determination request to the event processing processor as necessary; The event processing processor is provided with an event judgment requesting means for requesting the event processing processor to judge the event based on the processing content of the event processing processor regarding an event with a low value. detecting the occurrence of the transients, determining a set of transients in which the occurrences of the transients are arranged in a predetermined order,
It detects whether it is one of a set of transients corresponding to a plurality of predetermined events, and outputs it as the occurrence of the predetermined event. It is characterized by having a constant judgment event list for judging the occurrence of an event, and an interrupt judgment setting means for adding an event to be judged based on a request from the event judgment requesting means for an event not included in the list. event-driven vehicle control computer. 2. Input sensor signals that detect various driving conditions of the vehicle and operating conditions of the driver, perform various control calculations necessary for controlling the vehicle based on the above signals, and send control signals based on the above calculation results to the vehicle. In the vehicle control computer that sends data to various actuators for control, there is an event processing processor that detects operations during driving and changes in vehicle driving conditions, that is, events from data on addresses, and a detection result of the event processing processor. a control calculation processor that performs calculation processing based on the event processing; and an event-dedicated bus that transfers event-related addresses and data in addition to the normal main bus; Monitors only specific data related to events transferred via a dedicated bus, detects the occurrence of a transient in any data on an address, and determines a set of transients in which the occurrences of the above transients are arranged in a predetermined order. An event characterized in that it detects whether it is one of a set of transients corresponding to a plurality of predetermined events, and outputs it as the occurrence of the predetermined event. Drive-type vehicle control computer.