JP6061973B2 - Programmable device configuration control method and control device having programmable device - Google Patents

Description

  The present invention relates to a configuration control method for a programmable device and a control apparatus having the programmable device, and more particularly to a control method for reducing the control stop time as compared with the conventional method and completing the configuration of the programmable device.

  2. Description of the Related Art A programmable device capable of configuring information that can arbitrarily determine a device function is generally known. When such a programmable device is reset at the time of power-on or the like, the configuration information is lost. Then, after the configuration information is lost, it is known that the configuration needs to be executed for the programmable device to be in a controllable state.

  In addition, when an external device (for example, a microcomputer) detects an abnormality of the programmable device during the control operation of the programmable device, it is necessary to reset the programmable device from the external device and then execute the configuration again. It is also known that there is.

  Here, the programmable device cannot be used during configuration execution. For this reason, it is also known that the time required for configuration becomes a problem in a system using a programmable device.

  For example, when a programmable device is applied to the drive circuit control of the injector of the engine control apparatus, the injector cannot be driven during configuration. If the external device detects an abnormality of the programmable device during engine control while the engine is running and performs configuration at the detected timing, fuel will not be supplied and the engine will stop during that time. There is a possibility.

  In order to solve the above problems, a dedicated processing circuit that can execute part of the control contents executed by the programmable device is added, and during the configuration execution, the dedicated processing circuit is used to control the configuration. A method of controlling a programmable device that avoids the disabled state has been proposed (see, for example, Patent Document 1).

Japanese Patent No. 4213472

However, the prior art has the following problems.
As described above, Patent Document 1 can start control without waiting for completion of configuration by performing control by a dedicated processing circuit during configuration. However, since Patent Document 1 requires a dedicated processing circuit different from the programmable device, there arises a problem that the cost is increased and the configuration of the control device is complicated.

  The present invention has been made in order to solve the above-described problems, and can be quickly controlled without adding a dedicated processing circuit and without affecting the system at the time of power-on and reset during operation. It is an object of the present invention to obtain a programmable device configuration control method and a control device having a programmable device capable of starting and returning.

The programmable device configuration control method according to the present invention provides a programmable device that can be configured by externally providing configuration information that can arbitrarily determine the function of the device, and provides configuration information to the programmable device. A programmable device configuration control method executed by communication between a programmable device and a microcomputer in a control device including a microcomputer that executes configuration of a programmable device, the programmable device from the microcomputer by prohibited state control operations, to the programmable device during control stop, the programmable device is minimally operation By transmitting the first configuration information necessary for programmable devices in control stop from microcomputer, to complete the configuration for the first configuration information, the microcomputer is first configuration information to the programmable device By allowing the control operation based on the control state to be permitted, the control operation by the programmable device is started, and then the second configuration information other than the first configuration information is transmitted from the microcomputer to the programmable device. The configuration related to the configuration information is completed, and two-stage configuration control is performed.

Moreover, the control apparatus which has the programmable device which concerns on this invention provides the configuration information to the programmable device which can be configured by providing the configuration information which can determine the function of a device arbitrarily from the outside, and a programmable device Thus, in a control apparatus having a programmable device including a microcomputer that executes configuration of the programmable device, the microcomputer performs the configuration control of the programmable device through communication with the programmable device. the control operation by a disabled state, to the programmable device during control stop, the necessary for the programmable device to minimize operation By sending configuration information to the programmable device in control stop, allow a first configuration control section to complete the configuration for the first configuration information, the control operation based on the first configuration information by a programmable device state Thus, after starting the control operation by the programmable device , the second configuration information other than the first configuration information is transmitted to the programmable device, thereby completing the configuration related to the second configuration information. A configuration control unit.

  According to the present invention, the configuration information required for the minimum operation of the programmable device is preferentially configured, the programmable device is operated, and then the remaining configuration information is configured. Control. As a result, it is possible to provide a configuration control method for a programmable device capable of quickly starting and returning control in a time that does not affect the system at the time of power-on and reset during operation without adding a dedicated processing circuit. It has an excellent effect.

It is a figure which shows schematic structure of the control apparatus which concerns on Embodiment 1 of this invention. It is a figure which shows the internal structure of the programmable device in the control apparatus in Embodiment 1 of this invention. It is a figure which shows the drive current waveform of the generally known direct injection injector. It is a flowchart which shows a series of processing of the configuration control operation performed with the microcomputer in Embodiment 1 of this invention. It is a flowchart which shows the series process of the configuration operation | movement performed at the time of power activation by the programmable device which concerns on Embodiment 1 of this invention. It is a flowchart which shows the series process of the configuration operation | movement performed at the time of the reset during operation | movement with the programmable device which concerns on Embodiment 1 of this invention.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of a configuration control method for a programmable device according to the invention will be described with reference to the drawings. In the following description, a case where a programmable device is applied to the drive circuit control of the injector of the engine control apparatus will be described as an example.

Embodiment 1 FIG.
FIG. 1 is a diagram showing a schematic configuration of a control device according to Embodiment 1 of the present invention. The control device 1 according to the first embodiment shown in FIG. 1 has a programmable device 2 and a microcomputer 3 as processing circuits, and is a control device used for the purpose of controlling the engine.

Various sensor signals such as a crank angle sensor, an air flow sensor, an accelerator opening sensor, a throttle opening sensor, a water temperature sensor, an intake air temperature sensor, and an O ₂ sensor are input to the microcomputer 3 via the input circuit 4. .

  The microcomputer 3 outputs various drive signals such as an ignition drive signal and an electric throttle drive signal via the output circuit 5.

  The programmable device 2 and the microcomputer 3 are controlled by a power supply IC 6 that detects that a voltage is supplied from the battery 7.

  An injector drive signal is output from the microcomputer 3 to the programmable device 2. Then, the programmable device 2 generates an injector drive current waveform according to the injector drive signal.

  Further, the microcomputer 3 and the programmable device 2 are connected to each other via a communication bus, and can transmit and receive various data. Therefore, the configuration of the programmable device 2 is also executed through this communication bus.

  Further, the microcomputer 3 has a function of outputting a reset signal for controlling reset of the programmable device 2 as necessary. The microcomputer 3 detects an abnormality of the programmable device 2 from the received data information obtained via the communication bus, and resets the programmable device 2 with a reset signal when it is determined as abnormal.

  Further, the microcomputer 3 has a function of outputting an operation permission / prohibition signal for permitting and prohibiting the injector drive current generation operation of the programmable device 2 as necessary. Then, the microcomputer 3 uses this operation permission / prohibition signal to reliably complete the configuration without starting the operation of the programmable device 2 during the configuration execution after releasing the reset signal. The programmable device 2 can be operated after that.

  FIG. 2 is a diagram showing an internal configuration of the programmable device 2 in the control device 1 according to Embodiment 1 of the present invention. The programmable device 2 in the first embodiment shown in FIG. 2 includes a parameter information recording unit 20, a program information recording unit 21, an input / output information setting unit 22, an injector drive circuit 23, a current monitor circuit 24, a communication circuit 25, and A CPU 26 is provided.

  The microcomputer 3 corresponding to the external device is configured to be accessible to the parameter information recording unit 20, the program information recording unit 21, and the input / output information setting unit 22 in the programmable device 2 via the communication bus and the communication circuit 25. ing. The microcomputer 3 can write to and read from each access destination in the programmable device 2.

  Further, the CPU 26 in the programmable device 2 operates according to the program recorded in the program information recording unit 21. Further, the CPU 26 extracts an output device drive signal corresponding to the input injector drive signal according to the information of the parameter information recording unit 20 in which the output pattern information of the injector drive circuit 23 is recorded in association with the injector drive signal. Output to the injector drive circuit 23.

  The current monitor circuit 24 generates injector drive current information by monitoring the injector drive current generated by the injector drive circuit 23 and feeds it back to the CPU 26.

  The input / output information setting unit 22 stores information for selecting the connection destination of the input circuit and the output circuit, such as which injector drive circuit (OUT1 to 4) is driven in response to the injector drive signal (IN1 to IN4). .

  FIG. 3 is a diagram showing a drive current waveform of a generally known direct injection injector. When the injector drive signal, which is an input signal, is turned on, the CPU 26 keeps the injector drive circuit 23 on until the detected value of the current monitor circuit 24 that detects the injector drive current reaches the set current a.

  Then, when the fed-in injector drive current reaches the set current a, the CPU 26 turns off the injector drive circuit 23 and continues the off state until the current drops to the set current c.

  When the injector drive current decreases to the set current c, the CPU 26 turns on the injector drive circuit 23 again and continues the on state until the set current b is reached. Thereafter, when the injector drive current reaches the set current b, the CPU 26 turns off the injector drive circuit 23 again and continues the off state until the current drops to the set current c. Thereafter, the CPU 26 controls the injector drive current between the set current b and the set current c until the injector drive signal is turned off.

  The parameter information recording unit 20 records the set currents a to c described above.

  Next, a specific operation of the control device 1 will be described in detail below. FIG. 4 is a flowchart showing a series of configuration control operations executed by microcomputer 3 in the first embodiment of the present invention.

  First, after the microcomputer 3 is turned on by turning on the power to the control device 1 in step S101, the microcomputer 3 is permitted or prohibited operation during initialization processing of the microcomputer 3 in step S102. Set the signal to disabled.

  Next, in step S103, the microcomputer 3 executes the configuration of the programmable device 2 via the communication bus. At that time, the microcomputer 3 executes the configuration with the information to be configured as only the injector drive current waveform generation information necessary for the injector drive.

  Here, the minimum required injector drive current waveform generation information corresponds to program information recorded in the program information recording unit 21 of the programmable device 2 and input / output setting information recorded in the input / output information setting unit 22.

  The injector drive current waveform actually used requires various pattern formation depending on the engine operating state, and the amount of information to be recorded is not small. However, the information necessary for driving the injector at a minimum can be limited to the set currents a to c described above.

  The CPU 26 detects the presence or absence of parameter information in the parameter information recording unit 20 by incorporating it as a program in the program information recording unit 21 only for the set currents a to c. It is possible to drive the injector using the set currents a to c incorporated therein.

  After the necessary minimum configuration is completed, in step S104, the microcomputer 3 sets the operation permission / prohibition signal for the programmable device 2 to “permitted” and operates the programmable device 2. Thereafter, in step S105, the microcomputer 3 starts its own control.

  Furthermore, in step S106, the microcomputer 3 executes configuration of the remaining information that has not been configured in the previous step S103.

  Here, the remaining information that has not been configured corresponds to the generation parameter information of various current waveforms recorded in the parameter information recording unit 20 and is not the minimum necessary information, but the engine control is optimized. This corresponds to the data necessary for this.

  After detecting that there is parameter information in the parameter information recording unit 20, by programming the program information so as to use the current waveform generation parameter information, the programmable device 2 completes the remaining configuration. Thereafter, it can be driven with a desired injector drive current waveform.

  As described above, the parameter information recording unit 20 is executed by performing two-stage configuration control in which the minimum configuration is preferentially executed and the programmable device is activated and then the remaining regular information is configured. It is possible to reduce the time required for the configuration to be recorded and to start the control operation of the programmable device 2 at an early stage.

  After the two-stage configuration is completed, in step S107, the microcomputer 3 constantly monitors the operation of the programmable device 2 during the control operation and determines whether an abnormality has been detected. If the microcomputer 3 does not detect any abnormality, the microcomputer 3 continues the control as it is.

  On the other hand, when an abnormality of the programmable device 2 is detected in step S107, the process proceeds to step S108, and the microcomputer 3 resets the programmable device 2 with a reset signal.

  Next, in step S109, the microcomputer 3 prohibits the operation of the programmable device 2 by setting the operation permission / prohibition signal for the programmable device 2 to be prohibited.

  Thereafter, reconfiguration is performed. In step S110, the microcomputer 3 executes reconfiguration only of information that can generate an injector drive current waveform that is at least necessary for starting the engine, as in step S103 when the power is turned on.

  After the necessary minimum reconfiguration is completed, in step S111, the microcomputer 3 sets the operation permission / prohibition signal for the programmable device 2 to permission, and operates the programmable device 2. Thereafter, in step S112, the microcomputer 3 performs configuration of the remaining regular information that has not been configured in the previous step S110.

Summarizing the series of processes shown in FIG. 4 described above, the microcomputer 3 can execute configuration control in the following two steps when the power is turned on and during resetting during operation.
<First configuration control>
By transmitting the first configuration information necessary for the programmable device 2 to operate at a minimum to the programmable device 2, the configuration related to the first configuration information is completed.
<Second configuration control>
After permitting the control operation based on the first configuration information by the programmable device 2, the second configuration information other than the first configuration information is transmitted to the programmable device 2, thereby completing the configuration related to the second configuration information. Let

  Next, a configuration operation when the programmable device 2 is activated will be described in detail. FIG. 5 is a flowchart showing a series of configuration operations executed when the power is turned on in programmable device 2 according to the first embodiment of the present invention.

  First, after the power is turned on in step S201, the programmable device 2 receives the minimum necessary configuration information from the microcomputer 3 via the communication bus in step S202.

  When the necessary minimum configuration is completed, in step S203, the programmable device 2 determines whether or not the operation permission / prohibition signal from the microcomputer 3 is permitted. Wait for permission.

  On the other hand, if it is determined in step S203 that the operation permission / prohibition signal is permitted, the process proceeds to step S204, and the programmable device 2 starts its own control.

  Thereafter, in step S205, the programmable device 2 receives the configuration of the remaining regular information that has not been received in the previous step S202 during the control operation. In step S206, the programmable device 2 performs reception completion determination. If reception is not complete, the programmable device 2 proceeds to step S208, and generates an injector drive current waveform based on the minimum necessary information. On the other hand, if the reception has been completed, the process proceeds to step S207, and the programmable device 2 generates an injector drive current waveform based on the regular information.

  Next, details of the operation of the programmable device 2 after the microcomputer 3 resets the programmable device 2 when the microcomputer 3 detects an abnormality of the programmable device 2 while the programmable device 2 is in the control operation. Explained. FIG. 6 is a flowchart showing a series of configuration operations performed at the time of resetting in the programmable device 2 according to the first embodiment of the present invention.

  First, when the reset from the microcomputer 3 is released in step S301, the programmable device 2 receives the minimum necessary reconfiguration information from the microcomputer 3 via the communication bus in step S302.

  When the minimum reconfiguration is completed, in step S303, the programmable device 2 determines whether or not the operation permission / prohibition signal from the microcomputer 3 is permitted. Wait until you receive a permission signal.

  On the other hand, if it is determined in step S303 that the operation permission / prohibition signal is permitted, the process proceeds to step S304, and the programmable device 2 starts its own control.

  Thereafter, in step S305, the programmable device 2 receives the configuration of the remaining regular information that was not received in the previous step S302 during the control operation. In step S306, the programmable device 2 performs reception completion determination. If reception is not complete, the programmable device 2 proceeds to step S308, and generates an injector drive current waveform based on the minimum necessary information. On the other hand, if the reception has been completed, the process proceeds to step S307, and the programmable device 2 generates an injector drive current waveform based on the regular information.

  According to the present invention, the microcomputer 3 detects an abnormality of the programmable device 2, resets the programmable device 2, and then receives the operation permission signal from the microcomputer 3 after the necessary minimum reconfiguration. The injection stops only until it becomes controllable.

  A state where the influence of the injection stop is most remarkable during engine operation is idling. According to the present invention, priority is given to the minimum necessary configuration, so that the time from reset to control, that is, the injection stop period, can be set to about 20 ms. The value of 20 ms corresponds to the time when one injection stops at the worst with respect to a general idle speed of 600 rpm to 700 rpm, and cannot be an engine stop.

  As described above, according to the first embodiment, the two-stage configuration control is performed in which the minimum configuration is preferentially executed and the remaining regular information is configured after the programmable device is activated. Is going. Such a two-stage configuration control can be applied not only to the configuration at the time of starting the programmable device but also to the reconfiguration after the reset from the microcomputer.

  As a result, it is possible to realize a programmable device configuration control method capable of quickly starting and returning control without adding a dedicated processing circuit in a time that does not affect the system at the time of power-on and reset during operation.

  In the first embodiment described above, the configuration control has been described by taking the programmable device applied to the injector drive of the engine control apparatus as an example. However, the configuration control according to the present invention can be applied to a system using other programmable devices, and the same effect can be realized.

  DESCRIPTION OF SYMBOLS 1 Control apparatus, 2 Programmable device, 3 Microcomputer, 4 Input circuit, 5 Output circuit, 6 Power supply IC, 7 Battery, 20 Parameter information recording part, 21 Program information recording part, 22 Input / output information setting part, 23 Injector drive circuit , 24 current monitor circuit, 25 communication circuit, 26 CPU.

Claims (4)

Programmable devices that can be configured by externally providing configuration information that can arbitrarily determine device functions;
A programmable controller executed by communication between the programmable device and the microcomputer in a control device comprising: a microcomputer that executes the configuration of the programmable device by providing the configuration information to the programmable device A device configuration control method comprising:
By prohibiting the control operation of the programmable device from the microcomputer, the programmable device is stopped during control,
By transmitting the first configuration information necessary for the programmable device to operate at a minimum from the microcomputer to the programmable device that is in control stop, the configuration related to the first configuration information is completed,
Said microcomputer, said control operation based on the first configuration information by the permitted state with respect to the programmable device, after that initiated the control operation by the programmable device, other than the first configuration information By sending second configuration information from the microcomputer to the programmable device, the configuration related to the second configuration information is completed,
A programmable device configuration control method that performs two-stage configuration control. A first step of activating the microcomputer by powering on the control device;
After the first step, a second step of prohibiting the control operation of the programmable device from the microcomputer and setting the programmable device to a control stop state;
After the second step, the first configuration information necessary for the programmable device to operate at a minimum is transmitted from the microcomputer to the programmable device whose control is stopped. A third step of completing the information configuration;
A fourth step of allowing the control operation of the programmable device from the microcomputer to be permitted after the third step, and starting the control operation based on the first configuration information by the programmable device;
A fifth step in which the microcomputer starts its own control after the fourth step;
After the fifth step, the second configuration information other than the first configuration information is transmitted from the microcomputer to the programmable device during the control operation, whereby the configuration related to the second configuration information The configuration control method of the programmable device according to claim 1, further comprising: a sixth step of completing the step. A first step of monitoring the presence or absence of an abnormal state of the programmable device during the control operation by the microcomputer during the control operation;
A second step of resetting the programmable device from the microcomputer if an abnormal state of the programmable device is detected during the monitoring by the first step;
After the second step, the third step of setting the control operation of the programmable device after being reset from the microcomputer to a prohibited state, and setting the programmable device to the control stop state,
After the third step, the first configuration information necessary for the programmable device to operate at a minimum is transmitted from the microcomputer to the programmable device whose control is stopped. A fourth step to complete the information configuration;
After the fourth step, the fifth step of allowing the control operation of the programmable device from the microcomputer to be permitted and starting the control operation based on the first configuration information by the programmable device;
After the fifth step, the second configuration information other than the first configuration information is transmitted from the microcomputer to the programmable device during the control operation, whereby the configuration related to the second configuration information The configuration control method of the programmable device according to claim 1, further comprising: a sixth step of completing the step. Programmable devices that can be configured by externally providing configuration information that can arbitrarily determine device functions;
In a control apparatus having a programmable device comprising: a microcomputer that executes configuration of the programmable device by providing the configuration information to the programmable device;
When the microcomputer executes configuration control of the programmable device by communication with the programmable device,
By prohibiting the control operation of the programmable device, the programmable device is stopped during control, and the first configuration information necessary for the programmable device to operate at a minimum is transferred to the programmable device under control stop. A first configuration control unit that completes the configuration related to the first configuration information by transmitting;
By allowing the control operation based on the first configuration information by the programmable device to be permitted , after starting the control operation by the programmable device , the second configuration information other than the first configuration information The control apparatus which has a programmable device which has a 2nd configuration control part which completes the configuration regarding said 2nd configuration information by transmitting to a programmable device.

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