JPH09244707A - Processor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the processor which can continuously store values, etc., used to control a controlled device and decrease the frequency of writing to a nonvolatile memory. SOLUTION: An ECU(electric control unit) 21 performs operation with values detected by respective sensors, etc., connected to input interfaces 23 and 24 to control respective devices connected to an output interface 26. Learnt values determined by the states of the controlled devices are written in an SRAM 32, and written from the SRAM 32 to a flash PROM 33 at intervals of time determined by a timer 34. While the frequency of writing to the flash PROM 33 is reduced, the learnt values can be stored.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is mounted on a vehicle such as an automobile and performs calculation based on information from a sensor attached to a controlled device such as an engine in the vehicle.
The present invention relates to a processing device that controls a controlled device according to a calculation result.

[0002]

2. Description of the Related Art In recent years, in vehicles such as automobiles, ECUs (Electric Control) have been used to control the operation of engines.
trol Unit) is often provided. Engine control ECU, which is one of the ECUs mounted on the vehicle
Then, for example, calculation is performed based on information such as the amount of air taken in and the number of revolutions of the engine to control the amount of fuel supplied to the engine and the ignition timing. The calculation is performed based on information from a detector attached to an air intake pipe or the like and a basic value stored in advance in a ROM (Read Only Memory) of the ECU. An arithmetic expression for performing the above calculation is also stored in the ROM in advance.

In the ECU, learning control is performed in order to further improve the control accuracy to the stoichiometric air-fuel ratio. To perform learning control, first find the air-fuel ratio deviation amount from the stoichiometric air-fuel ratio, find the correction coefficient for correcting the air-fuel ratio deviation amount to the stoichiometric air-fuel ratio, and use the correction coefficient when performing the above calculation. Correct the calculation result. The correction coefficient is determined regardless of the state of the engine that the ECU is trying to control, and cannot be the theoretical air-fuel ratio of the engine that is actually controlled even if the correction coefficient is used for correction. Therefore, in addition to the correction coefficient, the correction must be performed according to the state of the engine to be controlled. The coefficient for performing the correction is determined by what is called learning of the state change of the engine.

The correction coefficient determined by the above-mentioned learning continuously corrects the air-fuel ratio deviation caused by the characteristic change in the use process of the engine / EFI (Electric Fuel Injection) component, so that the ECU is not supplied with power. It should not be erased.

As a method of storing the learning correction coefficient described above in the ECU, the ECU is provided with a volatile memory, for example, R.
A method of mounting an AM (Random Access Memory) and constantly supplying power to a volatile memory to retain the stored contents, and a rewritable nonvolatile memory such as EE
There is a method in which a PROM (Electoric Elesable Programmable ROM) is installed and the stored contents are retained.

FIG. 23 shows a first prior art ECU1.
2 is a block diagram showing a schematic configuration of FIG. ECU1
CPU (Central Processing Unit) 2 and SRAM (Static R
AM) 3, an input / output processing circuit (hereinafter referred to as "I / O") 4, a first power supply circuit 5, and a second power supply circuit 6.

In the ECU 1, a signal from an external sensor or the like is given to the CPU 2 via the I / O 4. C
The PU 2 performs processing based on the signal and outputs the processing result via the I / O 4 to control the controlled device. The battery 7 outputs a voltage of 12V, for example. The output of the battery 7 is supplied to the first power supply circuit 5 via the ignition switch 8 and directly to the second power supply circuit 6. The CPU 2 operates by the electric power supplied from the first power supply circuit 5, and the SRAM 3 holds the stored contents by the electric power supplied from the second power supply circuit 6.

The first and second power supply circuits 5 and 6 convert the voltage of 12V supplied from the battery 7 into, for example, 5V and supply it to the CPU 2 and the like. Since the ignition switch 8 is interposed between the battery 7 and the first power supply circuit 5, when the ignition switch 8 is cut off, the CPU 2 and the like are not supplied with power, and the ECU 1
Stops working. Since the battery 7 and the second power supply circuit 6 are directly connected, the power from the second power supply circuit 6 is SRA regardless of whether the ignition switch 8 is turned on or off.
Given to M3. SRAM3 which is a volatile memory
Since electric power is constantly supplied to, the learning value and the like can be stored as described above.

FIG. 24 is a second prior art ECU 1
2 is a block diagram showing a schematic configuration of 1. ECU11
In the above, the same components as those of the ECU 1 are designated by the same reference numerals and the description thereof will be omitted. The characteristics of the ECU 11 are SRA
That is, the EEPROM 12 is provided instead of the M3. In the ECU 11, the power supply circuit 13 to which a voltage of 12V is supplied from the battery 7 through the ignition switch 8 is connected to the CPU 2 and the EEPROM 1.
For example, a voltage of 5V is applied to 2 and the like. EEP
Since the ROM 12 is a non-volatile memory, the learned value and the like can be stored even if the ignition switch 8 is cut off and power is not supplied.

[0010]

The above-mentioned first prior art has a problem that two power supply circuits for converting the voltage of 12V supplied from the battery 7 into 5V and outputting the voltage are required. Further, when the battery 7 is removed, there is a problem that the data is erased, and it becomes impossible to continue the correction of the air-fuel ratio deviation by the learning correction coefficient, for example.

Although the above-mentioned second prior art solves the two problems in the first prior art, it is an EEPROM.
12 has a limit of the number of times of writing, for example, 100,000 times, which is determined by the configuration of the EEPROM 12.
It is not suitable for frequently rewriting the learned value and performing fine control according to the situation of the controlled device at that time.

An object of the present invention is to enable continuous control by storing a value or the like used for controlling the controlled device, and reduce the number of times of writing in the nonvolatile memory in which the value is stored. It is to provide a processing device capable of performing the above.

[0013]

The present invention provides a basic value determined based on information from one or a plurality of detecting means for detecting and outputting information, and information which is the same as or different from the information defining the basic value. A processing device that performs a calculation based on a correction value determined based on the calculation result and controls the controlled device based on the calculation result, and stores a learning value obtained based on the basic value and the correction value. A rewritable nonvolatile memory that rewrites a learning value when a signal instructing rewriting is given, a volatile memory that temporarily stores the basic value, the correction value, and the learning value, and a predetermined voltage. When the power supply means for supplying electric power and the supply of the voltage from the power supply means are started, the learning value stored in the nonvolatile memory is read and written in the volatile memory, and the correction value, the basic value and the learning value are learned. Based on the calculation result, the controlled device is controlled based on the calculation result, and the learning value stored in the volatile memory is rewritten based on the correction value. At least one of one or a plurality of predetermined conditions is set. And a control means for writing the learning value stored in the volatile memory to the non-volatile memory when a signal for instructing the rewriting is given to the non-volatile memory each time one of the two is satisfied. . According to the invention, when the supply of the voltage from the power supply means is started, the control means reads the learning value stored in the non-volatile memory and writes the learning value in the volatile memory, and the correction value, the basic value and the learning value. And the controlled device is controlled based on the calculation result. Further, the learning value stored in the volatile memory is rewritten based on the correction value, and when at least one of one or a plurality of predetermined conditions is satisfied, a signal for instructing the rewriting to the non-volatile memory. To write the learning value stored in the volatile memory to the non-volatile memory. Therefore, the learning value determined for each controlled device that the processing device attempts to control is 1
Alternatively, since it is written in the rewritable nonvolatile memory every time at least one of the plurality of conditions is satisfied, the learning value can be used to continuously control the controlled device, and the correction value It is possible to reduce the number of times the learning value changed based on the above is written in the nonvolatile memory.

The present invention further comprises a clocking means for starting clocking when power supply from the power source means is started, and the control means indicates in advance that the output of the clocking means indicates the passage of a predetermined time. It is characterized in that the conditions are set. According to the present invention, when the output of the time counting means indicates that a predetermined time has elapsed, the control means determines that the predetermined condition is satisfied, and the learned value stored in the volatile memory is stored in the nonvolatile memory. Write to. Therefore, the learning value is written in the non-volatile memory every predetermined time, and the learning value can be surely stored in the non-volatile memory while reducing the number of times of writing in the non-volatile memory. Since the learning value is stored in the non-volatile memory, it is possible to continuously control the controlled device using the learning value.

The present invention is characterized in that the control means adds a predetermined additional time to the predetermined time when a predetermined period sufficiently longer than the predetermined time has elapsed. According to the present invention, the control means writes the learning value in the nonvolatile memory at each predetermined time until the predetermined period elapses, and after the predetermined period elapses, the time obtained by adding the additional time to the predetermined time. The learning value is written in the non-volatile memory every time. Therefore, when the control of the controlled device is started, the learning value can be changed to the learning value according to the controlled device by writing the learning value to the nonvolatile memory relatively frequently, and after the elapse of the predetermined period, By increasing the time interval for writing the learning value in the nonvolatile memory, it is possible to store the learning value while reducing the number of times of writing.

The present invention comprises a switching means interposed between the control means and the power supply means for controlling conduction / interruption, and is stored in the non-volatile memory every time the power supply is started by the switching means. The number of activations is increased by 1, and when the number of activations reaches a predetermined value, a predetermined additional time is added to the predetermined time. According to the present invention, the control means writes the learning value in the nonvolatile memory at every predetermined time until the number of times of activation reaches the predetermined value, and after reaching the predetermined value, the additional time is added to the predetermined time. The learning value is written into the non-volatile memory every time. Therefore, when the number of activations is small, the learning value can be changed to a learning value according to the controlled device by writing the learning value to the nonvolatile memory relatively frequently, and after the number of activations reaches a predetermined value, By increasing the time interval for writing the learning value in the nonvolatile memory, it is possible to store the learning value while reducing the number of times of writing.

In the present invention, the control means compares the learning value stored in the non-volatile memory with the learning value stored in the volatile memory, and the learning value is equal to or larger than a predetermined value of the two learning values. It is characterized in that the occurrence of a difference is the predetermined condition. According to the present invention, the control means compares the learning value stored in the non-volatile memory with the learning value stored in the volatile memory, and the two learning values are equal to or more than a predetermined value. The learning value stored in the volatile memory is written in the non-volatile memory on the assumption that the predetermined condition is satisfied. Therefore, the non-volatile memory is written only when the difference between the learned value stored in the volatile memory and the learned value stored in the non-volatile memory becomes equal to or more than a predetermined value. It is possible to reduce the number of times of writing to.

The present invention is characterized in that the comparison is performed at predetermined time intervals based on the output of the time measuring means. According to the invention, the control means compares the learning value stored in the volatile memory with the learning value stored in the non-volatile memory at predetermined time intervals. Therefore, when it is determined that the difference between the learning value stored in the volatile memory and the learning value stored in the non-volatile memory is equal to or more than the predetermined value by the comparison performed at predetermined time intervals. Since only the non-volatile memory is written, the number of times of writing to the non-volatile memory can be reduced.

According to the present invention, the switching means is interposed between the control means and the power supply means to control conduction / interruption, and is interposed between the control means and the power supply means and in parallel with the switching means. A power supply means for supplying power to the control means by conducting for a predetermined first time when the switching means is cut off, and the control means stops the power supply from the power supply means by the switching means. The learning value stored in the volatile memory is written in the non-volatile memory by the electric power supplied through the electric power supply means under the predetermined condition. According to the invention, when the switching means stops the supply of electric power from the power supply means to the control means, the electric power supply means supplies the electric power to the control means for the first time. The control means writes the learned value stored in the volatile memory to the non-volatile memory during the first time period in response to the switching means being turned off. Therefore,
The learning value written in the non-volatile memory is the latest learning value when the switching means is cut off. Therefore, when the switching means is turned on next and control is started, the latest learning value is written. The value can be used to initiate control. Moreover, since the writing is performed when the switching means is cut off, the number of times of writing to the nonvolatile memory can be reduced.

The present invention further comprises a judgment means interposed between the detection means and the control means, for judging whether or not the information detected by the detection means is a value within a predetermined range. And the non-volatile memory is configured to include an abnormality detection information storage area in which abnormality detection information indicating that a value outside the predetermined range is detected by the detection means is written, and the control means is configured to operate from the detection means. If the determination means determines that the information is not within the predetermined range, the abnormality detection information is written in the abnormality detection information storage area of the volatile and non-volatile memory, and thereafter the correction value and the learning value are replaced. It is characterized in that the calculation is performed using a set value that is a value within a predetermined range. According to the present invention, the control means, when the information from the detection means is determined not to be a value within the predetermined range by the determination means, stores the abnormality detection information in the abnormality detection information storage area of the volatile and nonvolatile memory. Writing and writing the learned value stored in the volatile memory to the non-volatile memory. Subsequent control is performed using a set value that is a value within a predetermined range by replacing the correction value with the learning value. Therefore, if the information is not within the predetermined range, the learned value is stored in the non-volatile memory, and the subsequent control is performed using the set value. Therefore, the abnormal information is used to control the controlled device. It is possible to prevent the learning value from becoming an undesired value due to abnormal information.

[0021]

1 is a block diagram showing a configuration of an ECU 21 according to a first embodiment of the present invention.
3 is a block diagram showing an example of a configuration related to the ECU 21. FIG. FIG. 2 shows the structure of a water-cooled spark ignition internal combustion engine.

In FIG. 2, the combustion air introduced from the intake port 42 is purified by the air cleaner 43, and the intake pipe 4
4, the throttle valve 45 interposed in the intake pipe 44
After the amount of inflow is adjusted by, the flow enters the surge tank 46. The combustion air flowing out from the surge tank 46 is mixed with the fuel injected from the fuel injection valve 48 interposed in the intake pipe 47, and is supplied to the combustion chamber 51 of the internal combustion engine 50 via the intake valve 49. A spark plug 52 is provided in the combustion chamber 51.
Is provided, and air and fuel are burned in the combustion chamber 51 by a spark from the spark plug 52. This combustion chamber 51
The exhaust gas from the exhaust gas is discharged through the exhaust valve 53, and is discharged from the exhaust pipe 54 into the atmosphere through the three-way catalyst 55.

An intake air temperature detector 61 for detecting the temperature of intake air is provided in the intake pipe 44, a throttle valve opening detector 62 is provided in association with the throttle valve 45, and a surge tank 46 is provided. An intake pressure detector 63 for detecting the pressure in the intake pipe 47 is provided. In addition, the combustion chamber 51
A cooling water temperature detector 64 is provided in the vicinity. Exhaust pipe 5
4, an oxygen concentration detector 65 is provided upstream of the three-way catalyst 55, and an exhaust temperature detector 66 is provided downstream of the three-way catalyst 55. The rotation speed of the internal combustion engine 50, that is, the number of rotations per unit time is detected by the crank angle detector 67.

The ECU 21 includes the detectors 61 to 67.
At the same time, the vehicle speed detector 68, the start detector 69 that detects whether or not the starter motor 73 that starts the internal combustion engine 50 is activated, the air conditioning detector 70 that detects the use of the air conditioner, and the internal combustion engine 50 When the mounted vehicle is equipped with an automatic transmission, a detection result from a neutral detector 71 for detecting whether or not the irregular gear of the automatic transmission is in the neutral position is input.

Furthermore, the ECU 21 is energized by a battery 74, and each of the detectors 61 to 61 is energized.
Based on the detection result of 71 and the power supply voltage of the battery 74 detected by the voltage detector 60, the fuel injection amount, the ignition timing, etc. are calculated, and the fuel injection valve 8 and the ignition plug 12 are controlled. The ECU 21 also drives the fuel pump 72 when the internal combustion engine 50 is operating.

Between the intake pipe 47 and the exhaust pipe 54,
By-pass 77 is bypassed. The side passage 77 is provided with an EGR valve 78 for adjusting and controlling the flow rate of the exhaust gas recirculated through the side passage 77.

The EGR valve 78 is composed of, for example, a diaphragm, and the opening degree is controlled by controlling energization / de-energization of a vacuum switching valve for introducing intake negative pressure into the diaphragm chamber. Thus E
By controlling the opening of the GR valve 78, the amount of exhaust gas mixed in the intake air is changed and the air-fuel ratio can be changed.

The ECU 21 includes a control circuit 22, input interface circuits 23 and 24, an analog-digital conversion circuit (hereinafter referred to as "ADC") 25, an output interface circuit 26, and a power supply circuit 27. Composed of. Further, the control circuit 22 includes a CPU 31 and an SRAM 3
2, a flash PROM 33, a timer 34, and I /
And an O (input / output circuit) 35.

The output from the detector that outputs an analog value in each of the detectors 60 to 71 is converted into a digital value from the input interface circuit 23 via the ADC 25, and is given to the control circuit 22. Further, the output from the detector that outputs a digital value in each of the detectors 60 to 71 and the like is given to the control circuit 22 via the input interface circuit 24.

The electric power supplied from the battery 74 is applied to the ECU 21 via the ignition switch 75. The power supplied is converted into a voltage of, for example, 5 V by the power supply circuit 27 and is supplied to the control circuit 22 and the like. In the control circuit 22, the CPU 31 performs a predetermined process based on a signal given to the I / O 35 via the ADC 25 and the input interface circuit 24. The result of the processing is given to the output interface circuit 26 via the I / O 35. By providing the output of the output interface circuit 26 to the fuel injection valve 48,
The fuel injection amount is controlled. Further, the output is the EGR valve 7
8 to control the EGR amount. Further, the fuel pump 72 is driven by the output.

In the control circuit 22 of the ECU 21, when the power is turned on, the learning value and the like described above are read from the flash PROM 33 which is an electrically writable and erasable nonvolatile memory and written in the SRAM 32. CPU11 is I
And output of each detector supplied via / O35 and SR
The above process is performed based on the learning value stored in the AM 32. A timer 34, which is a time measuring means, measures time, and CPU interrupt timing such as program interrupt timing is measured.
Notify 31.

FIG. 3 is a timing chart for explaining an example of control performed by the ECU 21. The waveform shown in FIG. 3A is the waveform of the output voltage of the oxygen concentration detector 65, which is an oxygen sensor, and this output voltage is given to the ADC 25. The output of the ADC 25 shown in FIG.
The waveform shown in (2) has a high level when the output voltage of the oxygen concentration detector 65 is equal to or higher than the reference voltage, and has a low level when the output voltage is lower than the reference voltage. The reference voltage is
The output voltage to be taken by the oxygen concentration detector 25 at the stoichiometric air-fuel ratio is shown. Therefore, when the output of the ADC 25 is at a high level, it is in a rich state where the fuel amount is large with respect to the stoichiometric air-fuel ratio, and when it is at a low level, it is in a lean state where the amount of air is large.

The waveform shown in FIG. 3 (3) shows the value of the correction value FAF of the fuel injection time obtained based on the oxygen concentration. The correction value FAF is decreased by 0.1 when the output of the ADC 25 switches from a high level to a low level, for example, at times t0 and t2, and switches from a low level to a high level, for example, at time t1. ，
At t3, the value is increased by 0.1.

The correction value FAF is the time t0, t1, t2,
Although the value greatly increases and decreases at t3, this is because the oxygen concentration detector 65 is located on the downstream side of the internal combustion engine 50, the oxygen concentration detected by the oxygen concentration detector 65 at a certain timing, and its timing. In order to correct the difference between the oxygen concentration drawn into the internal combustion engine 50 and
When the output of the ADC 25 switches between rich and lean, the value of the correction value FAF is increased or decreased by 0.1.

For example, in the period W1 from the time t0 to the time t1 when the output of the ADC 25 is at the high level, the value at the time t0 is decreased by 0.002 each time the interrupt processing shown in FIG. 4 described later is performed. In addition, ADC2
In the period W2 from the time t1 to the time t2 when the output of 5 becomes the low level, it increases by 0.002 from the value at the time t1. The periods W1 and W2 are, for example, 1 second.

The waveform shown in FIG. 3 (4) is the learning value FAFB.
The value of G is shown. The learning value FAFBG is the correction value FA
It is a value determined based on F by the flowchart of FIG. 4 described later. Learning value FAFBG is ADC25
Each time the output level of is switched, the value changes by 0.002. The change in the learning value FAFBG will be described later.

FIG. 4 is a flow chart of a program which is executed by interrupting the main program shown in the flow chart of FIG. 7, which will be described later, at predetermined time intervals. This interrupt processing is performed while the main program is being executed, interrupted by the timer 34, for example, every 16 ms. In step s1,
Based on the output of the ADC 25, it is determined whether the oxygen concentration is rich or lean. If the oxygen concentration is rich, the process proceeds to step s2.

In step s2, it is determined by referring to the SRAM 32 whether or not the determination at the time of the previous interrupt processing is rich. If the acidity concentration at the time of the previous interruption process is rich, the process proceeds to step s3. In step s3, the correction value FAF is decreased by 0.002. After the processing of step s3 ends, the processing returns to the processing of the main program.

In step s2, if the oxygen concentration at the previous interruption process is lean, the process proceeds to step s4. In step s4, the correction value FAF is decreased by 0.1. In the following step s5, the result determined in step s1 is written and stored in the SRAM 32, for example. In step s6, the value obtained by multiplying the arithmetic mean value of the correction value FAF up to the previous time by the number of detection times and the correction value FAF this time is a value obtained by increasing the number of detection times by one. The arithmetic mean of the correction values FAF up to this time is calculated by dividing. The arithmetic mean obtained in step s6 is written and stored in the SRAM 32. The number of detections may be a predetermined number.

In step s7, it is determined whether rich or lean depending on whether the arithmetic mean obtained in step s6 is over 1.0 or under 1.0. If the arithmetic mean is a value exceeding 1.0, the process proceeds to step s8. In step s8, the learning value FAFBG is set to 0.00
Reduce by 2. After the processing of step s8 ends, the processing returns to the processing of the main program.

In step s7, the arithmetic mean is 1.0.
When it is less than, it proceeds to step s9. Steps
At 9, the learning value FAFBG is increased by 0.002. After the processing of step s9 ends, the processing returns to the processing of the main program.

If it is determined in step s1 that the oxygen concentration this time is lean, the process proceeds to step s10. In step s10, it is determined whether the previous oxygen concentration was lean by referring to the SRAM 32. If the previous oxygen concentration was rich, the correction value FAF is increased by 0.1. After the processing of step s11 ends, the processing of step s5 and thereafter is performed. If it is determined in step s10 that the previous oxygen concentration is lean, the correction value FAF is increased by 0.002. After the processing of step s12 ends, the processing returns to the processing of the main program.

FIG. 5 is a flow chart for determining the fuel injection time. The flowchart shown in FIG. 5 is executed as an interrupt process during execution of the flowchart of the main program shown in FIG. 7, for example. Step p1
Then, the fuel injection time Tc from the fuel injection valve 48 is obtained based on the following equation (1).

Tc = Tp × FAF × FAFBG + Tb (1) In the equation (1), Tp is a fuel injection time determined based on the amount of air taken in from the intake port 42. The fuel injection time Tp which is the basic value is, for example, the flash PRO.
It is previously stored in M33 or the like in association with the air amount. The fuel injection time Tp is read based on the air amount detected by the above-mentioned throttle valve opening detector 62, for example. Further, Tb is the actual injection time (Tp × F
AF * FAFBG) is a time for correcting the response delay until the time when the fuel injection valve 48 actually injects the fuel with respect to the calculated time.

In step p2, a predetermined signal is output from the ECU 21 to output the fuel injection valve 48 during the injection time Tc.
To inject fuel from. After the processing of step p2 ends,
Return to the processing of the main program.

FIG. 6 is a flowchart of the main program in the ECU 21, and FIG. 7 is a flowchart of the initial setting process in the main program.
Note that the flowcharts shown in FIGS. 6 and 7 particularly show the processing that is a feature of the present invention.

In the flow chart of the main program shown in FIG. 6 which will be described later, in step q1, the flash PROM 3 is used as the initial setting process performed in step m1.
The data stored in the address 3 to 2000 yen to 2FFF is stored in the SRAM 32 address 1000 to 1FF.
Write to F. In the present specification, “¥” indicates that the following numbers and symbols are hexadecimal values indicating addresses. At step q2, the timer 3 which is a time measuring means
4 is initialized and the time A is set to 0. After the initialization process is completed, the process is moved to the flowchart shown in FIG.

In the flowchart shown in FIG. 6, in step m1, the above-mentioned initial setting process is performed. Step m
2, the timer 34 initialized in the initialization process
To start the timing operation. At step m3, it is judged whether or not the time A measured by the timer 34 is equal to or longer than the time B preset as the write setting time to the flash PROM 33. Time B
Is set to 1 hour, for example. When the counting time A becomes equal to or longer than the set time B in step m3, the process proceeds to step m4.

At step m4, the data stored in the addresses of \ 1000 to \ 1FFF of the SRAM 32 are written as follows.
Flash PROM 33 address \ 2000 to \ 2F
Write to FF and save data.

In step m5, the clocking time A is reset to 0 in order to newly measure the time. Step m
After completion of the processing of 5, after performing other processing not shown,
The processes after step m3 are repeated. Step m3
When it is determined that the measured time A is less than the set time B, the other processes (not shown) after step m5 are performed, and then the processes after step m3 are performed.

As described above, according to the first embodiment of the present invention, the value detected by each of the sensors 61 to 71 and the value obtained based on the detected value are ECU
21 is written in the SRAM 32, and the operation is performed. SR
Each value including the learning value written in the AM 32 is read from the SRAM 32 when the measured time A of the timer 34 becomes a preset time B or more, and the flash P
Since it is written in the ROM 33, it is not limited by the number of times of writing in the flash PROM 33, which is a rewritable nonvolatile memory, and the ignition switch 7 is used.
Even when 5 is turned off and the supply of power from the battery 74 is stopped, the learning value and the like can be saved, and continuous control can be performed on the device that is trying to perform control. it can.

ECU 1 according to the second embodiment of the present invention
Since 21 is configured to include the same components as the ECU 21 shown in FIG. 1, description of the same components as the ECU 21 will be omitted. The ECU 121 is the ECU 2
The configuration 1 further includes a power supply 122 and a memory 123.

The power supply circuit 122 is directly supplied with electric power from the battery 74 without passing through the ignition switch 75. The power supply circuit 122 supplies power to the memory 123. The memory 123 is a volatile memory composed of, for example, SRAM. The memory 123 is I / O3
Writing and reading of data is performed via 5. Electric power is always supplied to the memory 123, and the stored contents are held unless the electric power supply from the battery 74 is stopped.

The characteristic of the ECU 121 is that the number of times the ignition switch 75 is turned on is determined by the flash PROM 33.
When the number of times stored is greater than or equal to a predetermined number of times, the SRAM 32 flashes the flash P
That is, the time interval of writing to the ROM 33 is changed and lengthened. Hereinafter, the number of times the ignition switch 75 is turned on will be referred to as the number of times of activation. The number of activations may be stored in the memory 123, and the number of activations written in the flash PROM 33 may be incremented by 1 for each predetermined number. The flash PROM 33 is written after the startup count is temporarily written in the memory 123.
By writing to the flash PROM 33, the number of times data is written to the flash PROM 33 can be reduced.

FIG. 8 is a timing chart for explaining the operation of ECU 121. In the timing chart of FIG. 8, the horizontal axis represents the cumulative number of times the ignition switch 75 is turned on, and the vertical axis represents the flash PROM 3
3 shows a time interval for writing. The cumulative number of times the ignition switch 75 is turned on means that the first time the ignition switch 75 is turned on and power is supplied from the battery 74 in a state where the ECU 121 is manufactured and mounted on, for example, a vehicle, After that, it is incremented by one each time the ignition switch 75 is turned on.

From the first time the ignition switch 75 is turned on to the predetermined number of times C, the writing interval is set to the time E.
The data written in the SRAM 32 is written in the flash PROM 33 every time the time E1 elapses. When the number of times of activation reaches a predetermined number C, the write interval is changed to a time E2 that is the time E1 increased by the time F. At the time of subsequent activation, the write operation is performed every time the time E2 elapses.

The predetermined number of times C is set to, for example, about 90 times, and the writing operation is performed at a time E1 of, for example, every 10 minutes for about one month, and when the number of times of activation reaches 90, a time of F, for example, 50 minutes. The writing operation is performed every hour as the time E2 by adding to the time E1 and thereafter as the time E2.

FIG. 9 is a flowchart of the main program in the ECU 121, and FIG. 10 is a flowchart of the initial setting process performed immediately after the power is turned on in the main program. The flowcharts shown in FIGS. 9 and 10 show the processing which is a feature of the present invention.

In the flowchart of the main program shown in FIG. 9, which will be described later, in step n1, the flash PROM 3 is used as an initialization process performed in step k1.
The data stored in the address 3 to 2000 yen to 2FFF is stored in the SRAM 32 address 1000 to 1FF.
Write to F. At step n2, the cumulative number of times of activation D stored in the SRAM 32 at address \ 1000 is read. At step n3, the number of times of activation D is incremented by 1 and written in the address 32 of the SRAM 32. At step n4, the timer 34 is initialized to set the time A to zero.
After the initialization process is completed, the process is moved to the flowchart shown in FIG.

In the flowchart of FIG. 9, the above-mentioned initial setting process is performed at step k1. Continuing step k2
Then, the time counting operation by the timer 34 initialized in the initialization process is started. At step k3, it is determined whether or not the number of activations D is equal to or greater than a predetermined number C. When the number of times of activation D is equal to or more than the number of times C which is determined in advance, the process proceeds to step k4.

At step k4, time E2 is determined by adding time F to time E1. In step k5,
By comparing the time A measured by the timer 34 with the time E, it is determined whether the time E has elapsed since the time counting operation was started. Time E is the number of startups D
Is less than the number of times C, the time is E1, and when the number of activations D is more than the number of times C, the time is E2.

When it is determined in step k5 that time A is equal to or longer than time E, the process proceeds to step k6. At step k6, the address of the SRAM 32 is from ¥ 1000 to ¥
The data stored in 1FFF is flash PROM
Write to the address 33 to ¥ 2000 to ¥ 2FFF. At step k7, the time measurement time A is reset to 0 and the time measurement is restarted. After the processing of step k7 is completed, other processing not shown is performed, and then the processing of step k3 and thereafter is performed.

In step k3, when the number of times of activation D is less than the number of times C which is determined in advance, the processing from step k5 is performed. If the time E has not elapsed since the timekeeping operation was started in step k5, other processing not shown is performed, and then the processing of step k3 and thereafter is performed.

As described above, according to the second embodiment of the present invention, the value detected by each sensor 61 to 71 and the value obtained based on the detected value are
21 is written in the SRAM 32, and the operation is performed. SR
Each value including the learning value written in the AM 32 is set to the time E1 when the number of activations D is less than a predetermined number C.
Each time, the data written in the SRAM 32 is written in the flash PROM 33, and the number of times of activation D is a predetermined number C
In the above case, the data written in the SRAM 32 is written in the flash PROM 33 at every time E2, so that the flash PR which is a rewritable nonvolatile memory.
The ignition switch 75 is turned off without being limited by the number of writings of the OM 33, and the battery 7
Even when the power supply from 4 is stopped, the learned value and the like can be stored, and continuous control can be performed on the device to be controlled.

Further, in the second embodiment of the present invention, the flash P is transferred from the SRAM 32 while the activation count D is small.
Since the content of the flash PROM 33 is frequently rewritten by shortening the time interval for writing to the ROM 33, the EC
The control can be performed by correcting the influence of the variation in the characteristics of the controlled device that the U121 tries to control. Further, when the number of times of activation D becomes equal to or more than the number of times C which is determined in advance, it is assumed that the change in the value for correcting the characteristic variation becomes small, so that the time interval for writing data in the flash PROM 33 is lengthened to reduce the number of times of writing. Therefore, it is possible to perform control by correcting the influence of the change by rewriting the learning value without being influenced by the write count limit of the flash PROM 33 and with respect to the change over time of the controlled device. You can

ECU 1 according to the third embodiment of the present invention
Since 31 has the same configuration as the ECU 21 shown in FIG. 1, description of the configuration will be omitted. The characteristic of the ECU 131 is that the first data stored in the SRAM 32 during the execution of the main program is compared with the second data stored in the flash PROM 33 corresponding to the first data, and the predetermined value is set. When there is a difference above,
That is, the first data is written by replacing it with the second data in the flash PROM 33.

FIG. 11 is a flowchart of the main program in the ECU 131, and FIG. 12 is a flowchart of the initial setting process performed in the main program immediately after the power is turned on. The flowcharts shown in FIGS. 11 and 12 show the processing that is a feature of the present invention.

In the flow chart of the main program shown in FIG. 11 which will be described later, in step j1, the flash PROM is used as the initialization processing performed in step h1.
The data stored in the 33rd address \ 2000 to \ 2FFF is transferred to the SRAM 32 address \ 1000 to \ 1F.
Write to FF. In step j2, the address value AS is
It is set to 1000. In the following step n3, the address value A
Let E be 2000 yen. After the initial setting process,
The processing moves to the flowchart shown in FIG.

In the flowchart of FIG. 11, in the step h1, the above-mentioned initial setting process is performed. Subsequent step h
In 2, the data stored in the SRAM 32 at the address indicated by the address value AS is read as the comparison data G. At step h3, the data stored in the address indicated by the address value AE in the flash PROM 33 is read as the comparison data H.

At step h4, the absolute value of the difference between the comparison data G and the comparison data H is compared with a predetermined value J. When the absolute value is larger than the predetermined value J, the process proceeds to step h5. At step h5, the comparison data G is written into the address value AE.

At step h6, the address value AS is incremented by 1. At step h7, the address value AS is ¥ 20.
It is determined whether or not the address is 00. ¥ 20
If the address is 00, go to step h8. At step h8, the address value AS is set to the address of \ 1000. At step h9, the address value AE is set to the address value A
It is defined as the address of the address indicated by S + 1000 yen. After the processing of step h9 ends, other processing (not shown) is performed, and the processing of step h2 and subsequent steps is performed again.

At step h4, when the absolute value is smaller than the predetermined value J, the processing after step h6 is performed. At step h7, if the address value AS does not indicate the address 2,000 yen, the processing after step h9 is performed.

As described above, according to the third embodiment of the present invention, the value detected by each of the sensors 61 to 71 and the value obtained based on the detected value are
21 is written in the SRAM 32, and the operation is performed. SR
Data written in AM32 and flash PROM
When there is a difference of at least a predetermined value J from the data written in 33, the data in SRAM 32 is flashed P
Since the writing is performed in the ROM 33, the writing is performed in the flash PROM 33 only when the learning value or the like largely changes, and the number of times of writing in the flash PROM 33 is reduced, without being limited by the number of times of writing in the flash PROM 33, and Even when the ignition switch 75 is turned off and the power supply from the battery 74 is stopped, the learning value and the like can be stored and the control is continuously performed for the device to be controlled. be able to.

FIG. 13 is a block diagram showing the structure of the ECU 81 according to the fourth embodiment of the present invention. ECU8
1, the same components as those of the ECU 21 described above are designated by the same reference numerals, and the description thereof will be omitted.

The ECU 81 is characterized by a relay circuit 82,
A delay circuit 83 is provided, and after the ignition switch 75 is turned off, S
The data stored in the RAM 32 is flash PR
That is to write in OM33.

The relay circuit 82 includes a relay switch 84 and a relay coil 85. When the ignition switch 75 is turned on, power is supplied to the delay circuit 83 and a predetermined voltage is supplied to the relay coil 85,
The relay switch 84 is turned on, and the power from the battery 74 is supplied to the power supply circuit 27. When the ignition switch 75 is cut off, the delay circuit 83 supplies the voltage to the relay coil 85 for a predetermined time.
Therefore, during the predetermined time, the battery 74
The electric power from is supplied to the power supply circuit 27. In the ECU 81, the control circuit 22 is provided with information indicating whether the ignition switch 75 is turned on or off.

FIG. 14 is a timing chart for explaining the operation of the ECU 81. FIG. 14 (1) is a waveform diagram of the signal IG indicating whether or not the ignition switch 75 is conducting, and FIG. 14 (2) shows the power supply voltage level.

At time t10, the ignition switch 75
When is turned off, the signal IG changes from the ON level to the OFF level. The delay circuit 83 supplies a voltage to the relay coil 85 during the period W11 from time t10 to time t11, and the power supply voltage level remains high. The writing operation is performed during this period W11.

FIG. 15 is a flowchart of the initial setting process performed by the ECU 81. The processing of the part necessary for explaining the present invention is shown. In step c1,
Flash PROM 33 address \ 2000 to \ 2F
The data stored in the FF is written into the SRAM 32 at addresses \ 1000 to \ 1FFF. After the processing of step c1 is completed, the processing is shifted to, for example, the flowcharts shown in FIGS. 6, 9, and 11.

FIG. 16 is a flow chart showing the processing when the ignition switch 75 is turned off. For example, when the ignition switch 75 is turned off during execution of the main program as shown in FIGS. 6, 9, and 11, the process of step d1 is performed. At step d1, the data stored in the SRAM 32 at the addresses \ 1000 to \ 1FFF are written to the flash PROM 33 at the addresses \ 2000 to \ 2FFF. After the data writing is completed, the processing is ended.

As described above, according to the fourth embodiment of the present invention, since the power is supplied for a predetermined time even after the ignition switch 75 is turned off, for example, the period W11, the ignition switch 75 is turned off. In response to this, the data stored in the SRAM 32 can be written in the flash PROM 33. Since the data written in the flash PROM 33 is the value last written in the SRAM 32 while the ignition switch 75 is on, the most recent learned value is used to turn on the ignition switch 75 next time. Control can be initiated.

FIG. 17 shows the SRAM 92 and the flash P in the ECU 91 according to the fifth embodiment of the present invention.
It is a figure which shows the structure of ROM93. ECU91 is SR
Except for the AM 92 and the flash PROM 93, the configuration is the same as that of the ECU 21 shown in FIG. 1, and therefore the description of each component will be omitted.

The characteristic of the ECU 91 is that when it is judged that the outputs from the sensors attached to various parts of the vehicle are abnormal.
That is, the flag stored in the area 94b of the SRAM 92 is rewritten to a state indicating that an abnormality has occurred, and the subsequent control is performed with a predetermined normal value.

The SRAM 92 shown in FIG. 17 (1) is configured to include an area 94a from address \ 1000 to \ 1F00 and an area 94b from address \ 1F00 to \ 1FFF. In the area 94a, learning values and the like are written as in the SRAM 32 in each of the above-described embodiments. A flag indicating that an abnormality has been detected is stored in area 94b. The flag is set for each type of abnormality considered to occur in the device that the ECU 91 attempts to control.

Flash PROM 9 shown in FIG. 17 (2)
3 is the area 95 from address \ 2000 to \ 2F00
a and area 95 from address \ 2F00 to \ 2FFF
and b. The learning value and the like stored in the area 94a described above are written in the area 95a. The area 95b stores the flag stored in the area 94b.

FIG. 18 is a diagram showing a connection relationship between the ECU 91 and the cooling water temperature detector 64 for explaining the operation of the ECU 91, and FIG. 19 shows a range in which the output of the cooling water temperature detector 64 is effective. It is a graph for doing.

Input buffer circuit 23 includes resistors 96 and 97 each having a predetermined resistance value, for example. ECU from the cooling water temperature detector 64 via the terminal 98
The analog signal given to 21 is given to the ADC 25 via the resistor 97 in the input buffer circuit 23. The signal is converted into a digital signal by the ADC 25 and given to the control circuit 22. In the input buffer circuit 23, the power supply voltage supplied from the power supply circuit 27 is passed through the resistor 96 as a current of a predetermined current value to the resistor 92.
Given to. A voltage of, for example, 5V is applied from power supply circuit 27 to resistor 96 and ADC 25.

In FIG. 19, the vertical axis represents the voltage input to the ADC 25, and the horizontal axis represents the water temperature. The temperature of the cooling water that is the cooling medium in the internal combustion engine 50 can be calculated based on the voltage output from the cooling water temperature detector 64. The ECU 21 determines that the case where the water temperature is below -30 degrees and the case where the water temperature exceeds 120 degrees are abnormal. The voltage value input to the ADC 25 is 4.7 V when the water temperature is -30 degrees and 0.3 V when the water temperature is 120 degrees. In consideration of the error of the cooling water temperature detector 64 and the like, the range recognized as normal is expanded by ± 0.2V.
Therefore, if the voltage value exceeds 4.9 V,
When it is less than V, it is determined to be an abnormal state.

FIG. 20 is a flow chart showing the processing in the control circuit 22 for the cooling water temperature detector 64. This flowchart is executed while the main program flowchart shown in FIG.
It is performed by interrupting every 6 ms.

In step g1, the cooling water temperature detector 64
Read the output of. In step g2, it is determined whether the voltage output from the cooling water temperature detector 64 is in the range of 0.1V to 4.9V. If it is determined in step g2 that the detected value is within the above range, the process proceeds to step g3. At step g3, the output from the cooling water temperature detector 64 is converted into the actual temperature.
After the processing of step g3 ends, the processing returns to the processing of the main program.

In step g2, the voltage is set to 0.1.
When it is determined that the voltage is less than V or exceeds 4.9V, the process proceeds to step g4. At step g4, it is determined that the temperature of the cooling water is abnormal. In the following step g5,
Instead of the abnormal output of the cooling water temperature detector 64, a preset value is set as the cooling water temperature. In the subsequent processing of the main program, the calculation is performed based on the set value. In the ECU 91, for example, the temperature indicated as the set value is set to 80 degrees.

At step g6, a flag indicating that an abnormality has occurred in the temperature of the cooling water in the SRAM 32 is changed to store the occurrence of the abnormality. Step g7
Then, the flag indicating that an abnormality has occurred in the temperature of the cooling water in the flash PROM 33 is changed to store the occurrence of the abnormality. After the processing of step g7 ends, the processing returns to the processing of the main program.

The main program process and the initial setting process in the ECU 91 are the same as those shown in FIGS.
The process of the flowchart shown in FIG.

As described above, according to the fifth embodiment of the present invention, the value detected by each of the sensors 61 to 71 and the like is normal and the detected value is normal. It is determined whether or not there is any, and if it is normal, the detected value is used for calculation, and if it is abnormal, the calculation is performed using a preset set value. Area 94b of the flash PROM 33 and the area 95b of the flash PROM 33, information indicating that an abnormality has been detected can be continuously stored, and can be referred to for maintenance when performing inspection or the like. .

Although each of the above-described first to fifth embodiments is described as being carried out independently, one or a plurality of embodiments may be combined.

[0096]

As described above, according to the present invention, the learning value determined for each controlled device to be controlled by the processing device can be rewritten every time at least one of one or a plurality of conditions is satisfied. Since it is written in the non-volatile memory, the controlled value can be continuously controlled using the learned value, and the learning value changed based on the correction value can be written in the non-volatile memory. Can be reduced.

Further, according to the present invention, the learning value is written in the non-volatile memory at every predetermined time, and the learning value is surely stored in the non-volatile memory while reducing the number of times of writing in the non-volatile memory. be able to. Further, since the learning value is stored in the non-volatile memory, it is possible to continuously control the controlled device using the learning value.

Further, according to the present invention, the control means writes the learning value into the non-volatile memory at each predetermined time until the predetermined period elapses, thereby changing the learning value to the learning value according to the controlled device. It is possible to write the learning value to the non-volatile memory every time when the predetermined time has elapsed and the additional time is added to the predetermined time.
The learning value can be stored while reducing the number of times of writing.

Further, according to the present invention, the control means writes the learning value in the non-volatile memory at each predetermined time until the number of times of activation reaches the predetermined value, thereby obtaining the learning value according to the controlled device. It can be changed, and after the number of activations reaches a predetermined value, the learning value is written to the non-volatile memory every time the additional time is added to the predetermined time, thereby reducing the number of writings and learning value. Can be memorized.

Further, according to the present invention, only when the difference between the learning value stored in the volatile memory and the learning value stored in the non-volatile memory becomes equal to or more than a predetermined value, the data is written in the non-volatile memory. Since the learning value is stored in the non-volatile memory, the number of writings to the non-volatile memory can be reduced.

Further, according to the present invention, the difference between the learning value stored in the volatile memory and the learning value stored in the non-volatile memory is a predetermined value by comparison performed at predetermined time intervals. Since the writing is performed in the non-volatile memory only when it is determined that the above is the case, it is possible to reduce the number of times of writing in the non-volatile memory while storing the learning value in the non-volatile memory.

Further, according to the present invention, the learning value written in the non-volatile memory is the learning value when the switching means, which is the latest learning value, is cut off. When starting the control, the latest learned value can be used to start the control. Moreover, since the writing is performed when the switching means is cut off, the number of times of writing to the nonvolatile memory can be reduced.

Further, according to the present invention, when the information is not a value within a predetermined range, the learned value is stored in the non-volatile memory and the subsequent control is performed using the set value, so that the abnormal information It is possible to prevent the controlled device from being controlled by using, and to prevent the learning value from becoming an undesired value due to abnormal information.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an ECU 21 and ECUs 81, 121 according to a first embodiment of the present invention.

FIG. 2 is a block diagram showing an example of a configuration related to an ECU 21.

FIG. 3 is a timing chart for explaining an example of control performed by the ECU 21.

FIG. 4 is a flowchart showing a process for oxygen concentration.

FIG. 5 is a flowchart for determining a fuel injection time in the ECU 21.

FIG. 6 is a flowchart of a main program in the ECU 21.

FIG. 7 is a flowchart of an initial setting process in the ECU 21.

FIG. 8 is an ECU 121 that is a second embodiment of the present invention.
3 is a timing chart for explaining the operation of FIG.

FIG. 9 is a flowchart of a main program in the ECU 121.

FIG. 10 is a flowchart of an initial setting process in the ECU 121.

FIG. 11 is an ECU 13 that is a third embodiment of the present invention.
3 is a flowchart of a main program in FIG.

FIG. 12 is a flowchart of an initial setting process in the ECU 131.

FIG. 13 is an ECU 81 according to a fourth embodiment of the present invention.
FIG. 3 is a block diagram showing the configuration of FIG.

FIG. 14 is a timing chart for explaining the operation of the ECU 81.

FIG. 15 is a flowchart of an initial setting process in the ECU 81.

FIG. 16 is a flowchart showing a process when the ignition switch 75 is turned off in the ECU 81.

FIG. 17 is an ECU 91 that is a fifth embodiment of the present invention.
FIG. 3 is a diagram showing structures of an SRAM 32 and a flash PROM 33 in FIG.

FIG. 18 is a diagram showing a connection relationship between an ECU 91 and a cooling water temperature detector 64.

FIG. 19 is a graph for explaining a range in which the output of the cooling water temperature detector 64 is effective.

FIG. 20 is a control circuit 2 for the cooling water temperature detector 64.
6 is a flowchart showing a process in 2.

FIG. 21 is a block diagram showing the structure of an ECU 1 as a first prior art.

FIG. 22 is a block diagram showing the structure of an ECU 11 that is second prior art.

[Explanation of symbols]

 21, 81, 91, 121, 131 ECU 22 Control circuit 23, 24 Input interface 25 ADC 26 Output interface 27 Power supply circuit 31 I / O 32 SRAM 33 Flash PROM 34 Timer 74 Battery 75 Ignition key

Claims (8)

[Claims] 1. A basic value determined based on information from one or a plurality of detecting means for detecting and outputting information, and a correction value determined based on information that is the same as or different from the information that determines the basic value. A processing device that performs a calculation based on the calculation result and controls the controlled device based on the calculation result, in which a learning value obtained based on the basic value and the correction value is stored, and a signal instructing rewriting is A rewritable non-volatile memory in which the learned value is rewritten when given, a volatile memory in which the basic value, the correction value, and the learned value are temporarily stored, and a power supply unit that supplies electric power of a predetermined voltage, When the supply of the voltage from the power supply means is started, the learning value stored in the non-volatile memory is read and written in the volatile memory, and the calculation is performed based on the correction value, the basic value and the learning value. Controls the controlled device based on the calculation results,
The learning value stored in the volatile memory is rewritten based on the correction value, and a signal for instructing the rewriting is given to the nonvolatile memory every time at least one of one or a plurality of predetermined conditions is satisfied, And a control unit that writes the learned value stored in the memory into a non-volatile memory. 2. The pre-determined condition is that the control means includes timing means for starting timing when power supply from the power source means is started, and the control means indicates that the output of the timing means has passed a predetermined time. The processing apparatus according to claim 1, wherein: 3. The process according to claim 2, wherein the control unit adds a predetermined additional time to the predetermined time when a predetermined period that is sufficiently longer than the predetermined time has elapsed. apparatus. 4. A switching means interposed between the control means and the power supply means for controlling conduction / interruption is provided, and is stored in the non-volatile memory each time the power supply is started by the switching means. 3. The processing device according to claim 2, wherein when the value of the number of activations is incremented by 1 and the value of the number of activations reaches a predetermined value, a predetermined additional time is added to the predetermined time. 5. The control means compares the learning value stored in the non-volatile memory with the learning value stored in the volatile memory, and the two learning values are equal to or more than a predetermined value. The processing apparatus according to any one of claims 1 to 4, wherein the occurrence is set as the predetermined condition. 6. The processing apparatus according to claim 5, wherein the comparison is performed at predetermined time intervals based on the output of the time measuring means. 7. A switching means interposed between the control means and the power supply means for controlling conduction / interruption; and a switching means interposed between the control means and the power supply means and in parallel with the switching means, When the switching means is cut off, there is provided a power supply means for conducting for a predetermined first time to supply power to the control means, wherein the control means stops the power supply from the power supply means by the switching means. With the above-mentioned predetermined condition, by the power supplied through the power supply means,
7. The processing device according to claim 1, wherein the learning value stored in the volatile memory is written in the non-volatile memory. 8. The volatile and non-volatile means is provided between the detection means and the control means, and comprises determination means for determining whether or not the information detected by the detection means is a value within a predetermined range. The memory is configured to include an abnormality detection information storage area in which abnormality detection information indicating that a value outside the predetermined range is detected by the detection means is written, and the control means includes information from the detection means. If the determination means determines that the value is not within the predetermined range, the abnormality detection information is written in the abnormality detection information storage area of the volatile and non-volatile memory, and thereafter, the correction value and the learning value are replaced with the predetermined value. The processing apparatus according to claim 1, wherein the calculation is performed using a set value that is a value within a range.