JP2001100858A - Microcomputer control method for multifunctional device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the input/output response of a multifunctional device from being delayed, when the operation speed of a microcomputer is set low for reducing standby power during the stop of the multifunctional device using the microcomputer, wherein the count speed of a timer as the peripheral function of the microcomputer is also switched to low setting as well, when the operating speed of the microcomputer is switched to a low setting. SOLUTION: This multifunctional device is provided with a microcomputer, with which the operating speed can be set and the count speed of the timer as the peripheral function of the microcomputer is set low when the operating speed is low. When operation is stopped, the operating speed of the microcomputer is set low, and further the processing method of information inputted/ outputted by an input/output means provided for the multifunctional device is changed. Thus, the input/output response of the multifunctional device can be prevented from being delayed by delaying the processing of various kinds of input/output information.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control method for a microcomputer (hereinafter referred to as a microcomputer) for controlling a multi-function device such as an air conditioner.

[0002]

2. Description of the Related Art Conventionally, in such a multifunctional device,
The operating speed of the microcomputer is constant between operation and stop,
The counting speed of the timer, which is a peripheral function of the microcomputer, did not change during the operation. Therefore, even when the operation was stopped, there was no delay in the processing of various inputs and outputs.

[0003]

However, when the processing operation speed of the microcomputer is constant as described above, when the multi-function device is stopped, so-called during standby,
Timer means constituting peripheral devices of the microcomputer consume power at the same pace as normal.

Therefore, if the operation speed of the microcomputer is switched to a low setting in order to reduce the power consumption during standby, the count speed of the timer, which is a peripheral function of the microcomputer, is also switched to a low setting. Had the problem of being delayed.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems. Even when the operation speed of the microcomputer is switched to a low setting, the response delay of input / output of various information is eliminated, and the reliability of the processing operation of the microcomputer is reduced. The purpose is to ensure the nature.

[0006]

According to a first aspect of the present invention, there is provided an operation speed determining means for setting an operation speed and determining whether the operation speed is high or low. In a multi-function device comprising a microcomputer and a timer means whose count speed is synchronized with the operation speed of the microcomputer, when the operation of the multi-function device is stopped, the operation speed of the microcomputer is set to be low, and It is characterized in that a method of processing information input / output by input / output means provided in the apparatus is changed.

As a result, it is possible to prevent a delay in input / output response of the multi-function device due to a delay in processing of various input / output information.

According to a second aspect of the present invention, a switch is provided as input means of the multi-function device, and when the operation speed of the microcomputer is low, the number of times the switch is detected is reduced. is there.

Thus, the time required for the switch input detection process can be reduced.

Further, the invention according to claim 3 is provided with a sensor as an input means of the multi-function device, and when the operation speed of the microcomputer is slow, the number of times of detection of the sensor is reduced to determine a value to be adopted. The method is characterized in that the method is changed.

As a result, the time required for the sensor input detection processing can be reduced.

Further, the invention according to claim 4 is provided with a buzzer for outputting a notification sound as an output means of the multi-function device, and the operation speed of the microcomputer is not switched during the output of the buzzer. It is a feature.

This prevents the buzzer oscillation frequency from changing when the operating speed of the microcomputer is switched, and prevents the notification sound from changing during the buzzer output.

Further, according to a fifth aspect of the present invention, there is provided a power supply clock generating means for generating a clock signal synchronized with a power supply frequency of an input power supply in the multi-function device, and a power failure which determines a power failure based on the presence or absence of the power supply clock signal. A determination means is provided, and when the operation speed of the microcomputer is low, the determination method of the power failure determination means is changed.

Thus, even when the operation speed is low, a power failure can be detected without erroneous determination.

Further, according to a sixth aspect of the present invention, the multi-function device is an air conditioner including a microcomputer, and the microcomputer controls the air conditioner.

Therefore, the standby power can be reduced while maintaining the input / output responsiveness of the air conditioner.

[0018]

Embodiments of a microcomputer control method according to the present invention will be described below with reference to the drawings.

(Embodiment 1) Hereinafter, a case where the microcomputer control method is applied to an indoor unit of an air conditioner will be described with reference to FIG.

FIG. 1 shows that the air conditioner includes a microcomputer 10 for processing the function of the indoor unit, and a switch 7, a sensor 8, and a buzzer 9 which are functions of the indoor unit.

The microcomputer 10 includes an operating state detecting means 1 for detecting an operating state of the air conditioner, an operating speed determining means 2 capable of setting an operating speed according to the operating state of the air conditioner, a timer counting means 3, and a power source. Power clock generation means 11 for generating a clock signal synchronized with the power frequency,
A power failure determining means for determining a power failure based on the presence or absence of a power clock signal; a switch input detecting means for detecting a switch input by operating a switch of the air conditioner; and a sensor value detected by a sensor of the air conditioner. And a buzzer oscillating unit 6 that emits a notification sound by the buzzer 9.

FIG. 2 shows an embodiment of the microcomputer control method, in which the operating condition detecting means 1 of the air conditioner determines whether the air conditioner is operating or stopped (step 2).
1) If the operation is stopped, the operation speed of the microcomputer 10 is switched to a low setting by the operation speed determination means 2 of the microcomputer 10 (step 22). At the same time, the count speed of the timer counting means 3 is also switched to a low setting (step 23), and the input / output processing during the low-speed operation is changed (step 24).

The operating state detecting means 1 determines whether the air conditioner is operating or stopped (step 21). If the air conditioner is operating, the operating speed of the microcomputer 10 is set to be high by the operating speed determining means 2 of the microcomputer 10. (Step 25). At the same time, the count speed of the timer counting means 3 is also switched to a high setting (step 26), and the input / output processing during normal operation is executed (step 27).

(Embodiment 2) Next, Embodiment 2 will be described with reference to FIG. Again in this case,
As in the first embodiment, an example in which the microcomputer control method is applied to an indoor unit of an air conditioner will be described.

In FIG. 3, the operating condition detecting means 1 of the air conditioner determines whether the air conditioner is operating or stopped (step 31).
Thereby, the operation speed of the microcomputer 10 is switched to a low setting (step 32). At the same time, the count speed of the timer counting means 3 is switched to a low setting (33). At this time,
If the number of times the switch input is detected by the switch input detection means 4 is large, the processing of the switch input will be delayed.
Reduce the number of times switch input is detected (Step 3
4).

As a result, the time required for the switch input detection processing can be reduced, and a delay in input / output response can be prevented.

The operating condition detecting means 1 for the air conditioner determines whether the air conditioner is operating or stopped (step 3).
1) If it is an operation, the operation speed of the microcomputer is switched to a high setting (step 35). At the same time, the count speed of the timer counting means 3 is also switched to a high setting (step 3).
6) The number of times the switch input is detected returns to normal (3).
7).

(Embodiment 3) Next, Embodiment 3 will be described with reference to FIG. Again in this case,
Similar to the first and second embodiments, an example in which the microcomputer control method is applied to an indoor unit of an air conditioner will be described.

In FIG. 4, the operating condition judging means 1 of the air conditioner judges whether the air conditioner is operating or stopped (step 41). If it is stopped, the operating speed of the microcomputer 10 is judged by the operating speed judging means 2 of the microcomputer. The setting is switched to a slow setting (step 42). At the same time, the count speed of the timer counting means 3 is switched to a low setting (step 43).

In this case, if the number of times of detection by the sensor input detecting means 5 is large, and if the average value of the detected values is calculated to determine the value to be adopted, the processing of the sensor input will be delayed. The number of times the sensor input is detected by the sensor input detecting means is reduced (step 44), and if the detected value matches the previous detection value (step 45),
The value is adopted (step 46).

As a result, the time required for the sensor input detection processing can be reduced, and a delay in input / output response can be prevented.

The operating condition detecting means 1 for the air conditioner determines whether the air conditioner is operating or stopped (step 4).
1) If it is an operation, the operation speed of the microcomputer is switched to a high setting (step 47). At the same time, the count speed of the timer counting means 3 is also switched to the high setting (48), so that the number of times of detecting the sensor input is not changed (step 3).
9) In order to determine a value to be adopted, an average value of the detected values is calculated (step 40), and the value is adopted (step 46).

(Embodiment 4) Next, Embodiment 4 will be described with reference to FIG. Again in this case,
Similar to Embodiments 1, 2, and 3, an example in which the microcomputer control method is applied to an indoor unit of an air conditioner will be described.

In FIG. 4, the operating condition detecting means 1 of the air conditioner determines whether the air conditioner is operating or stopped (step 51). If the air conditioner is stopped, it is determined whether a buzzer is being output (step 52). If the buzzer 9 is operating by the buzzer transmission means 6, the operation speed of the microcomputer 10 is kept high, and after the output of the buzzer 9, the operation speed of the microcomputer 10 is switched to a low setting (53). At the same time, the count speed of the timer counting means 3 is switched to a slow setting (5).
4).

This prevents the notification sound of the buzzer 9 from changing during the buzzer output.

(Embodiment 5) Next, Embodiment 5 will be described with reference to FIG. Again in this case,
Similar to Embodiments 1, 2, 3, and 4, the microcomputer control method is applied to an indoor unit of an air conditioner, and a method for detecting a power failure will be described.

In FIG. 6, the power failure judging means 12 of the microcomputer 10 synchronizes the power supply input to the air conditioner (multifunction device) with the power supply frequency by the power supply clock generating means 11 as shown by the detection timing A. The input level of the clock signal thus detected is detected at a predetermined cycle, and if a change in the clock signal cannot be detected within a predetermined time, it is determined that a power failure has occurred. Then, the operation speed of the microcomputer 10 is switched to a low setting, and at the same time, the count speed of the timer counting means 3 is also switched to a low setting.

In this case, the period for detecting the clock signal is extended, and it becomes impossible to accurately detect a change in the clock signal as indicated by the detection timing B, and there is a possibility that a power failure may be erroneously determined. .

Therefore, by making the time for detecting the clock signal until the power failure is determined to be longer than the normal time until the change in the clock signal can be reliably detected, the change in the clock signal can be accurately detected. , Power failure can be detected without erroneous determination.

In each of the above embodiments, the multi-function device is described as an air conditioner. However, any device that performs control mainly by a microcomputer can similarly solve the problem.

[0041]

As described above, a multi-function control device such as an air conditioner to which the microcomputer control method according to the present invention is applied can reduce the operating speed of the microcomputer when the operation is stopped to reduce standby power. By switching to a slow setting, the count speed of the timer, which is a peripheral function of the microcomputer, is switched to a slow setting. However, by reducing the number of switch input detections when a switch is operated, the time required for the switch input detection processing is reduced. Can be reduced. Thus, it is possible to prevent a delay in response when a switch of the multi-function device is operated.

Also, instead of reducing the number of times of detection of the switch input, the number of times of detection of the sensor is reduced and the method of determining the value to be adopted is changed, so that the time required for the sensor input detection processing can be reduced. Thereby, it is possible to prevent a delay in control response relating to sensor input of the multi-function device.

Further, since the switching of the operation speed of the microcomputer is not performed during the output of the buzzer, it is possible to prevent the sound of the notification sound from changing during the output of the buzzer. As a result, it is possible to eliminate a sense of incongruity due to a change in the notification sound.

Further, by changing the method of determining a power failure, a power failure can be detected without erroneous determination. Accordingly, even if the power is turned off, the LED or the like is not driven for an unnecessarily long time, and a sense of discomfort when using the air conditioner or the like can be prevented.

[Brief description of the drawings]

FIG. 1 is a circuit configuration diagram of an indoor unit of an air conditioner according to an embodiment of the present invention.

FIG. 2 is a flowchart showing a process according to the first embodiment of the present invention.

FIG. 3 is a flowchart showing processing according to the second embodiment of the present invention;

FIG. 4 is a flowchart illustrating a process according to a third embodiment of the present invention.

FIG. 5 is a flowchart showing a process according to a fourth embodiment of the present invention.

FIG. 6 is a timing chart of operation detection according to the fifth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Air conditioner operation state detection means 2 Microcomputer operation speed determination means 3 Timer count means 4 Switch input detection means 5 Sensor input detection means 6 Buzzer oscillation means 7 Switch 8 Sensor 9 Buzzer 10 Microcomputer 11 Power supply clock generation means 12 Power failure determination means

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Toshinari Baba 1006 Kadoma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. Terms (reference) 5B062 AA05 HH01 HH03 5B079 BA01 BB02 BC10 CC12 DD20

Claims (6)

[Claims] A microcomputer provided with an operation speed determination means capable of setting an operation speed and determining whether the operation speed is high or low; and a timer means having a count speed synchronized with the operation speed of the microcomputer. In the multifunction device provided, the operation speed of the microcomputer is set to be low when the operation of the multifunction device is stopped, and the method of processing information input / output by input / output means provided in the multifunction device is changed. A method for controlling a microcomputer of a multi-function device, the method comprising: 2. A multi-function device according to claim 1, further comprising a switch as an input means.
2. The microcomputer control method according to claim 1, wherein the number of times of detecting the switch is reduced. 3. A multi-function device comprising a sensor as an input means, wherein when the operation speed of the microcomputer is low, the number of times of detection of the sensor is reduced and the method of determining a value to be adopted is changed. A method for controlling a microcomputer of a multi-function device according to claim 1. 4. A multi-function device according to claim 1, further comprising a buzzer for outputting a notification sound as output means of said multi-function device, wherein switching of the operation speed of the microcomputer is not performed during output of the buzzer. A microcomputer control method for a functional device. 5. The multi-function device according to claim 1, further comprising: a power supply clock generating means for generating a clock signal synchronized with a power supply frequency of the input power supply; and a power failure determination means for determining a power failure based on the presence or absence of the power supply clock signal. 2. The microcomputer control method for a multi-function device according to claim 1, wherein when the operation speed is low, the determination method of the power failure determination unit is changed. 6. The air conditioner according to claim 1, wherein the multi-function device is an air conditioner equipped with a microcomputer, and the microcomputer controls the air conditioner. Microcomputer control method.