JP2005207700A - Control method and control device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a control method and a control device in occurrence of abnormality in communication caused by variations of characteristic of elements loaded on the control device, in reading out the correction data for uniforming the output characteristics from an external storage device. <P>SOLUTION: This control device performs the control to keep the minimum performance or accuracy on the basis of predetermined initial data without completely stopping a controlled apparatus, even in a case when the control correction data of a load driving circuit stored in the external storage device can not be read because of the abnormality in communication of the external storage device of a microcomputer. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  In the present invention, when the external storage device that stores the correction data and the microcomputer that controls the control device are arranged on different substrates or the like, the external storage device and the microcomputer are used to read the correction data. The present invention relates to a control method at the time of communication abnormality when performing communication. The present invention particularly relates to the control of a ventilation fan in a bathroom heater / dryer.

  FIG. 3 is a flowchart for explaining the operation of the conventional control apparatus. In FIG. 3, the control is started by turning on the power of a control device (not shown) (step 31). When the power is turned on, the microcomputer in the control device communicates with the external storage device in order to read correction data for correctly controlling a device control device (not shown) (step 32).

  The correction data sent from the external storage device is read into the storage device of the microcomputer (step 33). It is checked whether or not the correction data has been correctly read into the storage device of the microcomputer, that is, whether or not correct communication has been performed (step 34).

  If the microcomputer succeeds in correct communication, the microcomputer corrects the initial value stored in advance according to the correction data (step 35). The device control apparatus operates the device normally based on the corrected initial value (step 36).

  If the microcomputer determines in step 34 that correct communication is not possible, the microcomputer stops the operation of the control device (step 37) and notifies the abnormality (step 38).

  Moreover, the conventional control apparatus, the bathroom heating method, and the bathroom heating apparatus are, for example, as described in Japanese Patent Application No. 2003-129065, the temperature in the bathroom is lowered by a predetermined value or more from the set temperature by monitoring for a certain period of time. If so, the drop in the temperature in the bathroom is reduced by shortening the time interval for monitoring the temperature in the bathroom from the next time. When the temperature in the bathroom is within a certain value from the set temperature, the time interval for monitoring the temperature in the bathroom next time is lengthened.

  Even if each element used in the control device is a genuine product, variations in constant cannot be avoided. However, in recent years, each device has been actively adopted by other companies due to the rationalization of manufacturers. As described above, in the control device assembled from different elements of each manufacturer, for example, when controlling a ventilation fan, the voltage and the rotational speed are often not directly proportional.

  Therefore, normally, the control device performs control in direct proportion to the voltage even if the environment is different, based on correction data stored in advance in an external storage device. Moreover, the said bathroom heating dryer is mainly installed in the ceiling or wall, such as a bathroom and a dressing room, and sends the warm air and the cool air according to the condition, and ventilates for removing moisture.

  However, when the control device is disposed on the ceiling on the side of the ventilation fan, the external storage device or the notification device is installed on a wall having a predetermined height in consideration of operability. There are many. In such a case, since the control device and the external storage device are separated from each other, it may be impossible to exchange correction data due to external factors such as temporary noise.

JP2003-129065

  In the prior art, the microcomputer and the external storage device are often attached to the same substrate, and there are few cases where the communication between the microcomputer and the external storage device is abnormal. However, there is a case where the control device and the external storage device are separated from each other as described above, and the control device is often required to arrange the microcomputer and the external storage device on different substrates.

  In such a case, if communication between the microcomputer and the external storage device cannot be performed due to noise due to external factors, the microcomputer determines that there is a communication abnormality with the external storage device. The microcomputer needs to notify the user of the control device of the abnormal state earlier. The early abnormality notification is effective when a failure of an element used in a microcomputer or the like is the cause.

  However, when the control device cannot exchange correction data for a short time due to external factors such as noise, the control device determines that the communication between the microcomputer and the external storage device is abnormal, and the abnormality notification device While notifying the abnormality, the control of the device is also stopped. Once the control of the device has been stopped, the control device cannot be used until the user confirms whether there is an abnormality and then cancels the abnormality notification.

  Furthermore, since the control device determines that the device is malfunctioning despite being a temporary factor such as noise, it is discarded or replaced. In addition, the abnormality notification in the control device must be canceled by the user or service person. Furthermore, when the above-described determination is made by the control device, the device may be unable to operate despite a temporary failure due to external factors such as noise. In particular, there is a problem that operation is often impossible in an environment where noise is easily generated.

  The present invention is for solving the above-described problems, and when the microcomputer and the external storage device are temporarily unable to communicate due to external factors such as noise, the performance or accuracy is reduced to some extent. It is an object of the present invention to provide a control method or a control device that can temporarily operate with a function that is minimally required by a user in a state where the user is in the state. It is another object of the present invention to provide a control method or a control device that can automatically return to normal operation when the temporary external factor is resolved.

(First invention)
In the control method of the first invention, when communication error occurs when reading the correction data from the external storage device in which correction data for correcting the output characteristics caused by variations in characteristics of each mounted element is stored in advance. When the communication between the external storage device and the microcomputer that controls the control device is abnormal, the provisional operation is performed based on the initial value that is the pre-correction data stored in advance in the microcomputer.

(Second invention)
The control method according to the second aspect of the invention is based on a communication error when reading the correction data from an external storage device in which correction data for correcting output characteristics caused by variations in characteristics of each mounted element is stored in advance. When the communication between the external storage device and the microcomputer that controls the control device is abnormal, the external storage device and the microcomputer are temporarily operated with an initial value that is data stored in advance in the microcomputer before correction. The communication with the external storage device is performed again after a lapse of a certain time from the occurrence of the communication abnormality with the computer, and the normal operation is restored when the communication is normally completed.

(Third invention)
The control method according to the third aspect of the invention is based on a communication abnormality when reading the correction data from an external storage device in which correction data for correcting output characteristics caused by variations in characteristics of individual mounted elements is stored in advance. If the communication between the external storage device and the microcomputer that controls the control device is abnormal, the abnormality notification is performed, then the communication with the external storage device is performed again, and the communication is completed normally, the abnormality notification is performed. After canceling, the normal operation is restored.

(Fourth invention)
According to a fourth aspect of the present invention, there is provided a control apparatus according to the present invention, wherein a communication error occurs when the correction data is read from an external storage device in which correction data for correcting output characteristics caused by variations in characteristics of each mounted element is stored in advance. ,
Device control means for controlling the control device;
An external storage device in which control correction data of the control device is stored in advance;
Correction data reading means for reading control correction data stored in the external storage device, correction data check means for checking correction data from the external storage device, and initial values that are data before correction are stored in advance. Provisional operation for performing provisional operation with the initial value stored in the initial value storage means when the communication with the external storage device is determined to be abnormal by the initial value storage means and the correction data check means A microcomputer comprising at least means;
It is characterized by having.

(Fifth invention)
According to a fifth aspect of the present invention, there is provided a control device according to the present invention, wherein a communication error occurs when reading out the correction data from an external storage device in which correction data for correcting output characteristics caused by variations in characteristics of individual mounted elements is stored in advance. ,
Device control means for controlling the control device;
An external storage device in which control correction data of the control device is stored in advance;
Correction data reading means for reading control correction data stored in the external storage device, correction data check means for checking correction data from the external storage device, and initial values that are data before correction are stored in advance. Provisional operation for performing provisional operation with the initial value stored in the initial value storage means when the communication with the external storage device is determined to be abnormal by the initial value storage means and the correction data check means And a temporary operation with the initial value, the communication with the external storage device is performed again after a certain period of time has elapsed after the occurrence of a communication abnormality, and the communication with the external storage device is normal. A microcomputer having at least control means for returning to normal operation upon completion of the operation;
It is characterized by having.

(Sixth invention)
According to a sixth aspect of the present invention, in the case of a communication abnormality when reading the correction data from the external storage device in which correction data for correcting output characteristics caused by variations in characteristics of individual mounted elements is stored in advance. ,
Device control means for controlling the control device;
An external storage device in which control correction data of the control device is stored in advance;
Correction data reading means for reading control correction data stored in the external storage device, correction data check means for checking correction data from the external storage device, and initial values that are data before correction are stored. Temporary operation means for performing provisional operation with the initial value stored in the initial value storage means when it is determined by the initial value storage means and the correction data check means that communication with the external storage device is abnormal When the provisional operation is performed with the initial value, communication with the external storage device is performed again after a certain period of time has elapsed since the occurrence of a communication abnormality, and the communication is normally performed. A microcomputer having at least control means for returning to normal operation when completed;
A notification device that performs an abnormality notification when communication between the external storage device and a microcomputer that controls a control device is abnormal, and performs an error cancellation notification when communication is completed normally;
It is characterized by having.

(Seventh invention)
In the control device according to the seventh aspect of the invention, the microcomputer sets the number of times of communication with the external storage device again by the setting means.

(Eighth invention)
In the control device according to the eighth aspect of the invention, the microcomputer controls a fan driving device that drives the fan.

(9th invention)
In the control device of the ninth invention, the microcomputer controls a fan driving device for driving a fan in the bathroom heating / drying machine.

  According to the present invention, even if the communication between the external storage device and the microcomputer that controls the control device is abnormal, the correction stored in advance in the microcomputer without stopping the operation of the control device. Temporary operation is performed based on the initial value which is the previous data, so that the minimum function as the control device can be achieved and the control can be performed with the minimum performance or accuracy.

  According to the present invention, if the communication between the microcomputer and the external storage device is a temporary communication abnormality due to an external factor such as noise, the normal operation can be automatically restored after a predetermined time.

  According to the present invention, if the communication between the microcomputer and the external storage device is a temporary communication abnormality due to an external factor such as noise, the communication abnormality is informed that the provisional operation is being performed, and a predetermined time has elapsed. When the abnormal state ends later and the normal operation automatically returns, it can be notified that the vehicle is operating in the normal state.

  The present invention is suitable for control when the control device is a ventilation fan or a bathroom heating dryer.

(First invention)
The control method according to the first aspect of the invention performs accurate control by correcting output characteristics caused by variations in characteristics of individual elements mounted on a control device that controls a control device. The correction data is stored in advance in an external storage device arranged on a substrate or the like at a position away from the microcomputer. The first invention relates to a control method at the time of communication abnormality when reading the correction data from the external storage device to a microcomputer.

  Even when the communication between the external storage device and the microcomputer that controls the control device is abnormal, the microcomputer does not stop the operation of the control device and the pre-correction stored in the microcomputer in advance. Temporary operation is performed based on the initial value which is data, so that the minimum function as the control device can be achieved and the control can be performed with the minimum performance or accuracy.

(Second invention)
When the communication between the external storage device and the microcomputer that controls the control device is abnormal, the control method of the second invention performs provisional operation with the initial value, performs the minimum function as the control device, and performs communication abnormality. This is different from the first invention in that communication with the external storage device is performed again after a lapse of a certain time since the occurrence of the error, and if the communication is normal at that time, the control can be returned to the normal operation. ing.

  According to the control method of the second aspect of the present invention, if the communication between the microcomputer and the external storage device is a temporary communication abnormality due to external factors such as noise, it can automatically return to normal operation after a predetermined time. Yes.

(Third invention)
In the control method of the third invention, when the communication between the external storage device and the microcomputer that controls the control device is abnormal, provisional operation is performed according to the initial value, and the minimum function as the control device is achieved, and the abnormality notification is performed. After a certain period of time has elapsed since the occurrence of a communication error, communication with the external storage device is performed again. If the communication is normal at that time, the error notification is canceled and control returns to normal operation. It is different from the first invention and the second invention in that it can be made.

  If the communication between the microcomputer and the external storage device is a temporary communication abnormality due to external factors such as noise, the control method of the third aspect of the invention notifies the communication abnormality that the temporary operation is being performed, and is constant. When the abnormal state ends after a lapse of time and automatically returns to normal operation, it can be notified that the vehicle is operating in the normal state.

(Fourth invention)
According to a fourth aspect of the present invention, there is provided a control device for performing accurate control by correcting output characteristics caused by variations in characteristics of individual elements mounted on a control device for controlling a control device. And an external storage device and a microcomputer.

  The device control means is for controlling the control device. The external storage device stores control correction data of the control device in advance. The microcomputer comprises correction data reading means, correction data check means, initial value storage means, and provisional operation means.

  The correction data reading means reads control correction data stored in advance in the external storage device. The correction data check means checks correction data from the external storage device. The initial value storage means stores in advance an initial value which is data before correction. When the correction data check unit determines that the communication with the external storage device is abnormal, the temporary operation unit performs the temporary operation based on the initial value stored in the initial value storage unit.

  According to a fourth aspect of the present invention, there is provided a control device that detects a communication abnormality between the external storage device and a microcomputer that controls the control device by means of correction data check means, and is stored in advance in the microcomputer without stopping the operation of the control device. Based on the initial value which is the data before correction, the provisional operation is performed by the provisional operation means so that the control device can be operated with the minimum function and can be controlled with the minimum performance or accuracy. ing.

(Fifth invention)
In the control device according to the fifth aspect of the present invention, when the communication between the external storage means and the microcomputer detects the abnormal state by the correction data check means, the temporary operation is performed based on the initial value stored in the initial value storage means. The provisional operation is performed by the means, and after a certain period of time has elapsed since the occurrence of the communication abnormality, the communication with the external storage device is performed again, and the normal operation is restored when the communication is normally completed. It is different from the invention.

  If the communication between the microcomputer and the external storage device is a temporary communication abnormality due to external factors such as noise, the control device of the fifth invention performs communication again after a lapse of a certain time, and if it is normal, it operates normally. You can automatically return to.

(Sixth invention)
In the control device according to the sixth aspect of the invention, when the communication between the external storage means and the microcomputer detects that the correction data check means is in an abnormal state, the notification device notifies the abnormality and stores the initial value storage means The provisional operation is performed by the provisional operation means based on the initial value, and after a certain period of time has elapsed since the occurrence of the communication abnormality, the communication with the external storage device is performed again, and when the communication is normally completed, Simultaneously with returning to the operation, the abnormality notification in the notification device is canceled.

(Seventh invention)
In the control device according to the seventh aspect of the invention, the number of times of communication between the external storage device and the microcomputer is set again by setting means provided outside the microcomputer. The setting means can be provided in the microcomputer and the number of times can be determined in advance.

(Eighth invention)
In the control device according to the eighth aspect of the present invention, the control device is a fan, and device control means for controlling the fan is controlled by the microcomputer. The fan can be applied to heating, an air conditioner, and the like.

(9th invention)
In the control device of the ninth invention, the control device is a bathroom heating dryer, and controls a fan driving device that drives a ventilation fan in the bathroom heating dryer.

  FIG. 1 is an embodiment of the present invention, and is a schematic block diagram illustrating a bathroom heater / dryer as an example of a control device. In FIG. 1, a control device 10 has a microcomputer 11, device control means 12 for controlling a control device 16 such as a bathroom heater / dryer, and correction data for performing correction based on variation in constants between individual elements in advance. The stored external storage device 13 such as an EEPROM, setting means 14 that can change the setting described later in the microcomputer 11, and the notification device 15 that notifies the abnormality by an abnormality signal from the microcomputer 11. It consists of.

  Further, for example, the bathroom heating dryer monitors the ventilation air volume, and performs control to keep the ventilation air volume constant. In order to keep the accuracy of the ventilation air quantity constant, the ventilation fan drive is operated. The output accuracy of the circuit is required. However, there is a constant variation between the elements constituting the ventilation fan drive circuit, and the required output accuracy cannot be ensured. Therefore, the microcomputer 11 needs to be controlled while correcting.

  The microcomputer 11 includes a correction data reading means 111 for reading correction data stored in advance in the external storage device 13 and a correction for checking whether the correction data read from the external storage device 13 has been correctly received. Data check means 112 and pre-correction data stored in the microcomputer 11 in advance, an initial value capable of performing a minimum function as the control device and controlling with a minimum performance or accuracy The initial value storage means 113 for storing the information and the correction data check means 112 control the temporary operation means 114 for performing temporary operation based on the initial value when the communication is determined to be abnormal, and the respective means. The correction data read command stored in the external storage device 13 and the communication normal / error Determination, or and a control unit 115. for controlling the transmission, etc. of the broadcast signal to the notification device 15.

  FIG. 2 is a flowchart for explaining the operation of the schematic block diagram shown in FIG. 1, which is an embodiment of the present invention. In FIG. 2, the control is started by turning on a power supply (not shown) in the control device 10 (step 211). When the power is turned on, the correction data reading means 111 in the microcomputer 11 communicates with the external storage device 13 in order to read correction data for correctly controlling the control device 16 by the control means 115 (step 212).

  The correction data reading means 111 reads the correction data sent from the external storage device 13 (step 213). The correction data check means 112 checks whether or not the correction data has been correctly read into the correction data reading means 111, that is, whether or not communication has been correctly performed, using a known or well-known check means ( Step 214).

  When the correction data check unit 112 determines that correct communication has been performed correctly, the correction data check unit 112 corrects the initial value stored in the initial value storage unit 113 in advance according to the correction data, and sends it to the device control unit 12 ( Step 215). The device control apparatus 12 operates the control device 16 normally based on the corrected initial value (step 216).

  If the correction data check unit 112 in the microcomputer 11 determines in step 214 that correct communication has not been performed (step 217), the control unit 115 checks whether the control device 16 is in operation (step 217). 218).

  When it is determined that the control device 16 is in operation, the control unit 115 causes the notification device 15 to notify the abnormality (step 219). Further, the control means 115 instructs the temporary operation means 114 to send the initial value stored in the initial value storage means 113 to the equipment control means 12 and to operate the control equipment 16 according to the initial value. (Step 220).

  The control means 115 checks whether or not the control device 16 is stopped (step 221). When the control device 16 determines that the operation of the control device 16 is stopped, the control means 115 causes a fixed time to elapse after the communication abnormality (step 222). The control means 115 communicates with the external storage device 13 after the communication abnormality and after a predetermined time has elapsed (step 223).

  The control means 115 checks whether or not the communication is successful (step 224). When the control means 115 determines that the communication is successful, the control means 115 cancels the abnormality notification (step 225). When it is determined that the communication is not successful, the control unit 115 checks whether the communication is the nth communication set by the setting unit 14 in advance (step 226).

  If the number of times of communication does not reach n times, the control means 115 returns to step 223 and attempts to communicate with the external storage device 13. When the control means 115 determines that the number of times of communication has reached n times, the control means 115 returns to step 217 to determine communication abnormality. If the control means 115 determines in step 221 that the control device 16 is in operation, the control means 115 returns to step 219 so as to notify the abnormality.

The embodiments of the present invention have been described in detail above. However, the present invention is not limited to the above-described embodiments, and various design changes can be made without departing from the matters described in the claims. Is possible. The block diagram in the present embodiment can be achieved by well-known and known techniques. Moreover, although the present Example was mainly demonstrated as control equipment, it is applicable to control other than the ventilation fan for bathroom heating dryers, or other control equipment.

It is an Example of this invention, and is a schematic block block diagram which made the bathroom heating dryer into the example as a control apparatus. (Example 1) 2 is a flowchart for explaining the operation of the schematic block diagram shown in FIG. 1 according to the embodiment of the present invention. It is a flowchart for demonstrating operation | movement of the conventional control apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Control apparatus 11 ... Microcomputer 111 ... Correction data reading means 112 ... Correction data check means 113 ... Initial value storage means 114 ... Temporary operation means 115 ... Control means 12 ... Equipment control means 13 ... External storage device 14 ... Setting means 15 ... Notification means 16 ... Control equipment

Claims (9)

In the control method at the time of communication abnormality when reading the correction data from the external storage device in which correction data for correcting output characteristics caused by variations in characteristics of individual mounted elements is stored in advance.
When the communication between the external storage device and a microcomputer that controls a control device is abnormal, a temporary operation is performed using an initial value that is data before correction stored in advance in the microcomputer. In the control method at the time of communication abnormality when reading the correction data from the external storage device in which correction data for correcting output characteristics caused by variations in characteristics of individual mounted elements is stored in advance.
When the communication between the external storage device and the microcomputer that controls the control device is abnormal, the provisional operation is performed with the initial value that is the data before correction stored in advance in the microcomputer,
Between the external storage device and the microcomputer, communication with the external storage device is performed again after a certain period of time has elapsed since the occurrence of a communication abnormality.
A control method characterized by returning to normal operation when the communication is normally completed. In the control method at the time of communication abnormality when reading the correction data from the external storage device in which correction data for correcting output characteristics caused by variations in characteristics of individual mounted elements is stored in advance.
If communication between the external storage device and the microcomputer that controls the control device is abnormal, after notifying the abnormality, communication with the external storage device is performed again,
When the communication is normally completed, the control method is configured to return to normal operation after canceling the abnormality notification. In the control device at the time of communication abnormality when reading the correction data from the external storage device in which correction data for correcting output characteristics caused by variations in characteristics of individual mounted elements is stored,
Device control means for controlling the control device;
An external storage device in which control correction data of the control device is stored in advance;
Correction data reading means for reading control correction data stored in the external storage device;
Correction data check means for checking correction data from the external storage device;
Initial value storage means in which an initial value which is data before correction is stored in advance;
When the correction data check means determines that communication with the external storage device is abnormal, provisional operation means for performing provisional operation with the initial value stored in the initial value storage means;
A microcomputer having at least
A control device comprising: In the control device at the time of communication abnormality when reading the correction data from the external storage device in which correction data for correcting output characteristics caused by variations in characteristics of individual mounted elements is stored,
Device control means for controlling the control device;
An external storage device in which control correction data of the control device is stored in advance;
Correction data reading means for reading control correction data stored in the external storage device;
Correction data check means for checking correction data from the external storage device;
Initial value storage means in which an initial value which is data before correction is stored in advance;
When the correction data check means determines that communication with the external storage device is abnormal, provisional operation means for performing provisional operation with the initial value stored in the initial value storage means,
When provisional operation is performed with the initial value, communication with the external storage device is performed again after a certain period of time has elapsed since the occurrence of a communication abnormality, and the communication is completed normally. Control means for returning to normal operation at the time,
A microcomputer having at least
A control device comprising: In the control device at the time of communication abnormality when reading the correction data from the external storage device in which correction data for correcting output characteristics caused by variations in characteristics of individual mounted elements is stored,
Device control means for controlling the control device;
An external storage device in which control correction data of the control device is stored in advance;
Correction data reading means for reading control correction data stored in the external storage device;
Correction data check means for checking correction data from the external storage device;
Initial value storage means for storing an initial value which is data before correction;
When the correction data check means determines that communication with the external storage device is abnormal, provisional operation means for performing provisional operation with the initial value stored in the initial value storage means;
When provisional operation is performed with the initial value, communication with the external storage device is performed again after a certain period of time has elapsed after the occurrence of a communication error, and the communication is completed normally. Control means for returning to normal operation at the time,
A microcomputer having at least
A notification device that performs an abnormality notification when communication between the external storage device and a microcomputer that controls a control device is abnormal, and performs an error cancellation notification when communication is completed normally;
A control device comprising:   7. The control device according to claim 4, wherein the microcomputer sets a number of times of communication with the external storage device again by setting means.   8. The control device according to claim 4, wherein the microcomputer controls a fan driving device that drives a fan.   9. The control device according to claim 4, wherein the microcomputer controls a fan driving device that drives a fan in a bathroom heating dryer.

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