JPH0439565A - Control device for air conditioner - Google Patents

Abstract

PURPOSE:To enable a less-expensive memory to be used while assuring its reliability in operation by a method wherein when the time of writing into an operation data writing time counter register exceeds a predetermined number of times, the writing times for the same register is limited and a position of groups of registers is varied. CONSTITUTION:Information required for performing an operation control is stored and held by a memory storing means 7 even after a turning-off of a power supply 1 and the same operation as that just before turning-off of the power supply is started again in response to the information stored in the memory holding means 7 when the power supply is returned back to its original state. When the number of times of writing of the operation data into the writing time counter register 72 exceeds the predetermined number, the writing time for the same register 72 is limited by a register position specifying and varying means so as to vary the position of each of the register group 72 (1 to n). With such an arrangement, it is possible to prohibit the writing into the non-volatile memory holding means 7 troubled and further it is possible to limit the writing time into the non-volatile memory holding means 7 and then a less-expensive memory can be used while assuring its reliability in operation.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a control device for an air conditioner, and particularly to a control device that has a nonvolatile memory and can be powered on and off.

[Conventional technology]

FIG. 5 is a block diagram showing a control device for an air conditioner disclosed in Japanese Unexamined Patent Publication No. 64-32302 (hereinafter referred to as the first embodiment). In the figure, 1 is a commercial power source, and 2 is a commercial power source. A power transformer transforms the power transformer 1, and a power transformer 3 rectifies the output of the power transformer 2.

A power supply circuit provides smooth and stabilized output, and 5 is a switch for inputting user settings, indoor temperature conditions, etc.

6 is an input circuit consisting of a thermistor, etc.; 6 is an output circuit consisting of a relay, etc. that turns on/off a fan, compressor, etc.;
7 is a non-volatile storage means for storing operating conditions such as on/off operation and fan speed; 8 is a microcomputer that controls the entire system.

Next, the operation of this conventional example will be explained with reference to the flowchart shown in FIG.

When the commercial power supply 1 (Fig. 5) is energized, the power transformer 2
．． Power is applied to the microcomputer 8 via the power supply circuit 3, and the operation of the microcomputer starts.

When started, the contents of storage means 7 (operation flag FM)
is transferred to the memory of the microcomputer (step 100), then it is determined whether the transferred operation flag F is 0 or 1 (step 110), and if it is 1, the operation is restarted (step 120), If it is 0, the process directly advances to the next input process (step 130).

This input processing includes starting/stopping operation, changing fan speed, measuring room temperature, etc. Next, calculation processing (step 140) is performed to determine the output state based on the data input in the input processing, and output processing such as turning on/off the compressor and driving the fan (step 150) is performed.

Next, it is determined whether the operating state has changed from on to off or from off to on.Step 160) If there is no change (
Returning to the input process in step 130), if there is a change, write the new content into the storage means 7 (step 170).
~Step 200).

Further, Japanese Patent Application Laid-Open No. 64-64198 (hereinafter referred to as the second conventional example) discloses an access control system for a non-volatile memory with a limit on the number of writes. This second conventional example has a write count register and a data register, but because it does not control register position changing means, it is necessary to replace the storage means when the write count reaches a specified value.

[Problem to be solved by the invention]

As described above, since the conventional example operates as described above, in the first conventional example, when writing data to a non-volatile storage means, if a write error occurs, a malfunction will occur. had the problem of having to use expensive memory with high reliability and a long write life.

In addition, in the second conventional example, data is written to the non-volatile memory holding means every time the operating state changes, which increases the number of writes to the non-volatile memory holding means, making it difficult to use memory with a long write life. However, there is a problem that the memory has to be replaced.

This invention has been made to solve the above problems, and can prohibit writing to a malfunctioning non-volatile memory holding means, and also limit the number of writes to the non-volatile memory holding means. The purpose of the present invention is to obtain a control device for an air conditioner that can use inexpensive memory while ensuring reliability.

[Means to solve the problem]

Therefore, in the present invention, there is provided a memory holding means which has a plurality of operation data registers and an operation data writing frequency counter register and stores and holds information necessary for operation control even after the power is cut off, and when the power is restored, In the control device for an air conditioner, the air conditioner has an operation restarting means for restarting the same operation as immediately before the power cut-off based on the information stored in the memory storage means, wherein the number of writes in the operation data write number counter register reaches a specified number. The above objective is achieved by an air conditioner control device comprising register position designation changing means that limits the number of writes to the same register and changes the position of the register group when the number of registers exceeds the limit. be.

Further, in the present invention, there is provided a storage means for storing and retaining information necessary for operation control of the air conditioner even when the power is cut off, and when the power is restored, the information stored in the memory holding means is stored immediately before the power is cut off. and an operation restart means for restarting the same operation, comprising: a plurality of operation data registers, a data pointer specifying a position of the operation data register, and data written in the operation data register. and a data pointer changing means that determines normality if the comparison and determination means determine that the data are the same, and changes the data pointer if they are not the same. This purpose is intended to be achieved by a control device for a harmonizer.

[Effect]

The air conditioner control device according to the present invention stores and retains information necessary for operation control even after the power is cut off using the memory retention means,
The operation restart means resumes the same operation as immediately before the power was cut off, based on the information stored in the memory storage means when the power is restored.

Then, when the number of writes to the operation data write count register exceeds a specified number, the register position designation and change means limits the number of writes to the same register and changes the position of the register group.

Further, in the air conditioner control device according to the present invention, the position of the operation data register is specified by the data pointer, and the comparison determination means compares and determines the data written in the operation data register and the data read out, and determines whether the data is the same. If it is determined, it is determined to be normal, and if they are not the same, the data pointer is changed by the data pointer changing means.

〔Example〕

Hereinafter, the two aspects of this invention will be explained based on the drawings.

FIG. 1 is a detailed diagram of the memory holding means in the first embodiment of the present invention. Incidentally, since the overall configuration of the control device for the air conditioner of the present invention is the same as that shown in FIG. 5 of the conventional example, FIG. 5 will be referred to.

FIG. 2 is a flowchart for controlling the operation of the first embodiment;
FIG. 3 is a detailed diagram of the memory holding means in the second embodiment of the present invention, and FIG. 4 is a flowchart for controlling the operation of the second embodiment. In the figure, the same reference numerals as those in the conventional example represent the same or equivalent components, and redundant explanation will be omitted.

First, a first embodiment of the present invention will be described with reference to FIGS. 1, 2, and 5.

In FIG. 1 of the drawings, 7 is a memory holding means, which has a plurality of operation data registers 71 and an operation data writing frequency counter register 72, and is a means for storing and holding information necessary for operation control even after the power is cut off. be.

Reference numeral A denotes an operation resuming means, which is composed of an input circuit 5 (Fig. 5), and is a means for restarting the same operation as immediately before the power was cut off, based on the information stored in the memory holding means 7 when the power is restored (details will be described later). ).

Further, B is a register position designation change means, which is composed of the microcomputer 8, and when the number of writes to the operation data write count register 72 exceeds a predetermined value, it limits the number of writes to the same register, and controls the number of writes to the register group ( (described later). Further, data 1 to n at 71 are a group of operation data registers, and counters 1 to n at 72 are a group of operation data write count registers. The operation data is written to the operation data register, and the number of writes is written to the operation data write count register.

Next, the operation of the first embodiment will be explained using the flowchart of FIG. 2 and FIG. 5.

In Figures 1 and 5 of the drawings, when a commercial power source 1 (Figure 5) is turned on, power is applied to a microcomputer (hereinafter referred to as a microcomputer) 8 through a power transformer 2 and a power circuit 3, and the microcomputer operates. starts. When started, it is determined whether the counter 1 in the storage means 7 is within the specified number. If it is within the specified number, the contents of data 1 (
The operation flag (FM) is transferred to the memory of the microcomputer (step 102), and if it exceeds the specified number, the number on the counter 2 is determined (step 103).

If it is within the specified number, the contents of data 2 (operation flag FM
) is transferred to the memory, which is the memory holding means 7 of the microcomputer (step 104). If the counter n-1 exceeds the specified number, the contents of data n are transferred.

Next, it is determined whether the transferred operation flag F is O or 1 (Step 110), if it is 1, the operation is restarted (Step 120), and if it is 0, the next input processing is performed (Step 130). ).

This manual processing includes starting/stopping operation, changing fan speed, and measuring room temperature. Next, calculation processing (step 140) is performed to determine the output state based on the data input in the input processing, and output processing such as turning on/off the compressor and driving the fan (step 150) is performed.

Then, it is determined whether the operating state has changed from on to off or from off to on (step 160). If there is no change, the process returns to step 130, and if the change is over, the counter 1 or the specified number is Step 1
71), If it is within the specified number, increment counter 1.Step 172) Store the operation details in data 1 (step 173), If it is above the specified number, then judge the value of counter 2 Stella7'174) , if it is within the specified number, increment counter 2 (step 175).
The driving details are stored in data 2.

When the counter n-1 exceeds the specified number, the operation details are stored in data n.

Note that the means for determining the number of writes stored in the operation data write number register 72 and the register position designating and changing means B for changing the position of the register group when the number of writes exceeds a certain value are operated by the microcontroller and the icon. It consists of a program (not shown).

Furthermore, in the first embodiment, the non-volatile storage means is composed of a plurality of pairs of operation data registers 71 and operation data write count registers 72; A similar effect can be obtained by configuring the independent operation data write count register and operation data register pointer.

Next, a second embodiment of the present invention will be described using FIGS. 3 to 5.

FIG. 3 is a detailed diagram of the storage means shown in FIG. 5 and FIG. 7 according to the second embodiment of the present invention, and the block diagram of the entire air conditioner control device is the same as that in FIG. 5 of the conventional example.

In FIG. 5, C is a comparison/judgment means, which is composed of the microcomputer 8 and is a means for comparing and deciding the data written in the operation data register 71 and the data read out (details will be described later). D is a data pointer changing means,
It is composed of a microcomputer 8, and if it is determined that they are the same by the comparison and determination means C, it is determined to be normal, and if they are not the same, the data pointer is changed (details will be described later). Further, in FIG. 3, registers 1 to n 71 are operation data registers, and a pointer 72 is a data pointer that specifies the position of the operation data register 71, and the operation data is written to the operation data register 71.

Next, the operation of the second embodiment will be explained using FIGS. 3, 4, and 5.

When the commercial power supply 1 (Fig. 5) is energized, the power transformer 2
．． Power is applied to the microcomputer (hereinafter referred to as microcomputer) 8 via the power supply circuit 3, and the microcomputer starts operating. When started, the contents of the register i (operation flag FM(i)) indicated by i stored in the pointer in the memory holding means 7 are transferred to the memory 7 of the microcomputer (step 100).

Next, determine whether the transferred operation flag F is 0 or 1 (step 110), if it is 1, restart the operation (step 120), and if it is 0, proceed to the next input process (step 130). Proceed to.

This input processing includes starting/stopping operation, changing fan speed, measuring room temperature, etc. Next, calculation processing (step 140) is performed to determine the output state based on the data input in the input processing, and output processing such as turning on/off the compressor and driving the fan (step 150) is performed.

Next, it is determined whether the operating state has changed from on to off or from off to on.Step 160) If there is no change, the process returns to manual processing in step 130.If there has been a change, the value of F must be determined. Step 170), and invert the value of F (Step 180. Step 190).

Next, F is transferred to register i of the operating data register indicated by the data pointer (step 200), and the content MF(i) of register i is transferred to F TEST (step 210), where F and the nonvolatile memory Compare the F TEST once written to and read out (Step 220); if they are the same, register i is determined to be normal and return to the input process of step 130; if not, the content i of the data pointer is incremented and Return to processing.

Note that a comparison determination means C compares the data written in the operation data register 71 and the data read out.
The data pointer changing means for changing the data pointer is constituted by a microcomputer program.

[Effects of the Invention] As described above, according to the present invention, it is possible to prohibit writing to a malfunctioning non-volatile memory holding means, and to limit the number of times of writing to the non-volatile memory holding means. This has the effect of providing an air conditioner control device that can use inexpensive memory while ensuring reliability.

[Brief explanation of drawings]

FIG. 1 is a detailed view of the memory holding means according to the first embodiment of the present invention, FIG. 2 is a flowchart for controlling the operation of the first embodiment, and FIG. 3 is a detailed view of the memory holding means according to the second embodiment of the present invention. 4 is a flowchart for controlling the operation of the second embodiment, FIG. 5 is a block diagram showing a conventional air conditioner control device, and FIG. 6 is a flowchart for controlling the operation of the conventional example. be. A ---- Operation restart means B...Register position designation change means C...
・Comparison and determination means D-... Data point changing means 3...
Power supply circuit 5...Input circuit 6--=-Output circuit 7--Memory holding means 8 axes...Microcomputer 71--Operation data register 72--Data Pointer Note that the same reference numerals in the figures indicate the same or corresponding parts. Figure 1 7 shows the Hashi-Kai Seishan.

Claims (2)

[Claims] (1) A memory holding means having a plurality of operation data registers and an operation data write count register, and storing and holding information necessary for operation control even after the power is cut off, and when the power is restored, the memory holding means An air conditioner control device comprising: an operation restart means for restarting the same operation as immediately before the power cutoff based on the stored information, when the number of writes in the operation data write number counter register exceeds a specified number, 1. A control device for an air conditioner, comprising register position designation and change means for limiting the number of times of writing to the same register and changing the position of the register group. (2) A storage means for storing information necessary for controlling the operation of the air conditioner even when the power is cut off, and when the power is restored, the information stored in the memory holding means allows the same operation as that just before the power was cut off. A control device for an air conditioner comprising: a restarting means for restarting operation; a plurality of operation data registers; a data pointer specifying a position of the operation data register; and a data pointer changing means that determines normality if the comparison and determination means determines that the data are the same, and changes the data pointer if they are not the same. Air conditioner control device.