JPH10283101A - Microcomputer controller for freezer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely change all the other set values related to a certain set value to be used for controlling a freezer when changing this set value. SOLUTION: This device is provided with a central processing unit 1 for operating a control signal based on an input or information from an input device 4, a storage device 2 and a process input/output device 5 and outputting this signal to a display device 3, the process input/output device 5 and the storage device 2, and the storage device 2 is equipped with an information storage area 21 for control for storing information required for operating the control signal, a default value holding area 22 for holding the default value of a set value, an inter-parameter linking area 23 for holding the relation between the set values, a set value holding area 24 for holding the set value under using at present, and a preceding set value holding area 25 for holding the set value before the change when changing the set value.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a microcomputer control device for a refrigerator.

[0002]

2. Description of the Related Art In a microcomputer control device for a refrigerator, each set value used for controlling the refrigerator is predetermined by a designer based on specifications, specifications, etc. of the refrigerator. Changes in external factors such as the location of the refrigerator or the use of multiple refrigerators, or subtle differences in the characteristics of the equipment mounted on each refrigerator require the setting values to be changed. There is.

[0003] In this case, the setting value is changed by a worker who performs installation, maintenance, and the like. Therefore, when a certain setting value is changed, another setting value affected by the change is changed as intended by a designer. Not necessarily. The same applies to the case where the meaning of the set value used changes due to a change in the control method of the refrigerator or the like.

In addition, even when the designer changes the set value, he or she sometimes forgets to change another set value which is affected by the change of one set value. In any case, the more important the set value to be changed is for controlling the refrigerator, the more likely it is to cause a large accident.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and its gist is to provide a display device for displaying operation data and set values of a refrigerator. An input device for inputting a change in display content or a change in a set value of the display device, a storage device for storing operation data of the refrigerator and information necessary for calculating a control signal, and an operation data of the refrigerator. A process input / output device for inputting a control signal to the refrigerator and a control signal based on input or information from the input device, the storage device, and the process input / output device. A control information storage area for storing information necessary for the operation of the control signal in the storage device, and a central processing unit for outputting a control value to the storage device. Fault value holding area, parameter-linked data holding area to hold the relationship between setting values, setting value holding area to hold the currently used setting value, and A microcomputer control device for a refrigerator is provided with a previous set value holding area for holding a set value.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention is shown in FIGS. In FIG. 1, the microcomputer control device of the refrigerator includes a central processing unit 1, a storage device 2, a display device 3, an input device 4, and a process input / output device 5.

The process input / output device 5 takes in operation data of the refrigerator 6 and inputs it to the central processing unit 1, and outputs a control signal calculated by the central processing unit 1 to the refrigerator 6. The input device 4 includes an input button for changing a set value and an operation state of the refrigerator, and inputs a command corresponding to an operation of the input button to the central processing unit 1.

The display device 3 receives data from the central processing unit 1 in accordance with a command from the input device 4, and displays operation data of the refrigerator, set values, and the like. When the setting value is changed, the changed setting value, the setting value that needs to be changed next, and the message notifying the end of the changing operation are displayed.

The storage device 2 has, in addition to a control information storage area 21 for storing information necessary for calculating a control signal, the following four areas used for changing set values. Default value holding area 22 for holding the default value of the setting value Parameter linked data holding area 23 for holding the relationship between setting values 23 Setting value holding area 24 for holding the setting value currently used Previous setting value holding area 25 for holding the setting value before change when changing the value

The central processing unit 1 includes an input device 4 and a storage device 2
And calculates a control signal of the refrigerator 6 based on the input or information input from the process input / output device 5 and outputs the control signal to the process input / output device 5 and the display device 3 to output data, set values, and the like. Then, the operation data and set values are stored in the storage device 2.

To change the set value, when a command to change a set value is input from the input device 4, the central processing unit 1 stores the set value to be changed in the set value in the storage device 2. The value is read from the area 24, and the value is saved in the previous set value holding area 25 and held there.

Thereafter, the set values are sequentially changed in accordance with the input from the input device 4, and when the input to confirm the set value is performed from the input device 4, the set value holding area 24 of the storage device 2 is set.
Rewrites the set value stored in to the changed set value.

FIG. 2 shows a control flow chart when the set value is changed in the central processing unit 1. When an operation for changing a certain set value P1 is performed by the input device 4, whether or not another set value related to the set value P1 exists is searched by searching the inter-parameter linked data holding area 23. .

FIG. 3 shows an example of the parameter-linked data holding area 23. Setting values related to each other are arranged in the row direction in the parameter
The relational expression between these set values is stored.

A set value P1 exists in the parameter-linked data storage area 23, and other set values P2,
If P4 and P8 exist, their set values P1, P2, P4, P8
Until all changes have been completed, the setting value change processing is not to be completed.

The set values P2 and P are changed by changing the set value P1.
The relational expressions f (P8), f (P1), f (P
2), f (P4) can be calculated, so set values P2, P4, P8
Is changed, the recommended values are displayed on the display device 3.

In this way, if the recommended values can be used as changed setting values as they are, only the processing for fixing these setting values is performed, and the changing processing ends. However, if the recommended value needs to be changed, the above-described setting value change processing may be performed sequentially.

The set value changing process is completed by the above series of processes. If it is desired to return the set value P1 to the value before the change or to return to the default value set at the time of shipment from the factory, the input device is used. When the previous set value setting command or the default value setting command is input to the central processing unit 1 by the CPU 4, the central processing unit 1 reads the previous set value or the default value from the previous set value holding area 25 or the default value holding area 22 and reads it. Write to the setting value holding area 24.

[0019]

According to the present invention, when a set value used for controlling a refrigerator is changed, it is possible to reliably change another set value which is affected by a change in a certain set value. It is possible to prevent the refrigerator from malfunctioning due to a change in the set value.

[Brief description of the drawings]

FIG. 1 is a control block diagram of a microcomputer control device according to an embodiment of the present invention.

FIG. 2 is a control flowchart for changing a set value.

FIG. 3 is a conceptual diagram of an inter-parameter linked data holding area.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Central processing unit 2 Storage device 3 Display device 4 Input device 5 Process input / output device 6 Refrigerator 21 Control information storage area 22 Default value holding area 23 Parameter linked data holding area 24 Setting value holding area 25 Previous setting value holding area

Claims (1)

[Claims] 1. A display device for displaying operation data and set values of a refrigerator, an input device for inputting a change of display contents and a change of a set value of the display device, and an operation data of the refrigerator. Storage device for storing information necessary for calculating the control signal and the control signal, a process input / output device for inputting operation data of the refrigerator and outputting a control signal to the refrigerator, and the input device, the storage device, and the process input / output device A central processing unit that calculates a control signal based on input or information from the CPU and outputs the control signal to the display device, the process input / output device, and a storage device, and stores information necessary for calculation of the control signal in the storage device. Data storage area, default value holding area for holding the default value of the setting value, parameter-linked data holding area for holding the relationship between the setting values, currently used A microcomputer control device for a refrigerator, comprising: a set value holding area for holding a set value being changed; and a previous set value holding area for holding a set value before change when the set value is changed. .