JPS62200130A - Control unit of air conditioner - Google Patents

Abstract

PURPOSE:To make it possible to transmit a large amount of data with a small number of terminals by a serial transmission of data between a remote controller unit and a control timer. CONSTITUTION:In a case where a transmission of data is requested from a control timer 3 to a remote control unit 2, a transfer requesting signal is outputted to a serial transfer requesting output terminal 34 of a microcomputer 6b for a timer. A remote controller 7b for a remote controller outputs a clock signal from a transfer requesting signal to a serial transfer requesting output terminal 34 through a clock signal output terminal P21 for serial transfer, and also outputs data through a serial output terminal P22 in synchronization therewith. A computer 7b sets the terminal 21 at an L level for seconds t2 and outputs a transfer requesting signal 101. If, after delay of seconds t2, the terminal P24 of the computer 7b is at an L-level 100a, it is judged that there is not connection of a controlling timer 3, whereas if it is at a high level 100b, it is judged that there is a connection.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a control device for an air conditioner, and in particular, a control timer is connected to a remote controller, and the air conditioner is controlled according to the time setting of the control timer. The present invention relates to a control device for an air conditioner that controls the air conditioner.

[Conventional technology]

FIG. 5 is a block diagram showing a conventional air conditioner control device that controls the air conditioner using a remote controller and a control timer. In the figure, 1 is an air conditioner, 2 is a remote controller unit, 3 is a control timer, 4 is a display circuit for displaying the clock of the control 1 timer 3, etc., and 5 is a switch for setting the operation mode and time. 6a is this input circuit 5.
This is a timer microcomputer that processes input data supplied from a timer and has a clock function and an input/output function.

FIG. 6 shows the connection of signal lines between the remote controller unit 2 and the control timer 3 in FIG.
PI3 is an input terminal of the remote control microcomputer 7a, and P12 to P15 are output terminals of the timer microcomputer 6b.

Next, signal transmission between the remote controller unit 2 and the control timer 3 will be explained.

When the control timer 3 is connected to the input terminal P01, the H (Hi rt+) level is input, and when the control timer 3 is not connected, the L (Low) level is input manually. The computer 7a determines whether or not the control timer 3 is connected to the input terminal P0.
Judgment is made by checking the human power level of 1. The timer microcomputer 6a changes the outputs of the output terminals P12 to P15 as follows according to the time setting or control mode setting input from the input circuit 5. When the timer microcomputer 6a operates the air conditioner 1 according to the set time, the timer microcomputer 6a outputs the output terminal P12.
is set to H level, and set to L level to stop operation. Further, if the control mode is set to the timer control operation mode by the input circuit 5, the output terminal P1
3 is set to the L level, and if the temperature setting shift control mode is selected, the output terminal P13 is set to the H level. The timer microcomputer 6a also has an output terminal P that outputs a shift temperature signal in the temperature setting shift control mode.
14. From P15, when the shift temperature is 2°C, level L,
When the temperature is 3°C, it outputs L, and when the temperature is 4°C, it outputs H and H. Moreover, when the remote control microcomputer 7a determines that the control remote controller 3 is connected, it controls the air conditioner 411 according to the signal level of each input terminal PO2 to PO5.

[Problem that the invention seeks to solve]

However, in the conventional air conditioner control device described above, it is necessary to provide a signal line between the remote controller unit and the control timer to determine whether the control timer is connected. Special terminals are required for the remote controller unit and control timer, and as the amount of data transmitted between the remote controller unit and the timer increases, more input/output terminals are required for the microcomputer. There were various problems such as:

This invention was made to solve the above-mentioned problems, and it is possible to transmit a large amount of data with a small number of terminals without the need for a special terminal to determine whether or not a control timer is connected. The object of the present invention is to obtain a control device for an air conditioner having a remote controller unit and a control timer.

[Means for solving problems]

The air conditioner control device according to the present invention uses a microcomputer equipped with a serial transmission function for each of the remote controller unit and the control timer, and performs data transfer between the remote controller unit and the control timer by serial transfer. It is configured to do so.

[Effect]

In the air conditioner control device configured in this way,
Since data transfer between the remote controller unit and the control 1 timer is performed by serial data transfer, it can be easily determined whether the control timer is connected to the remote controller unit.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings. Figure 2 shows a control device for an air conditioner corresponding to Figure 5, in which 6b is a timer microcomputer with a serial transfer function, 7b is a remote control microcomputer with a serial transfer function, and P21 is the remote controller described above. a terminal for outputting a clock signal for data transfer in serial transfer of the microcomputer 7b;
P22 is a terminal for outputting serial data of the remote control microcomputer 7b, P23 is a terminal for inputting serial data of the microcomputer 7b, and P24 is a terminal from the timer microcomputer 6b of the remote control microcomputer 7b. P31 is a terminal for inputting a serial transfer request signal of P31, a terminal for inputting a transfer clock signal in serial transfer of the timer microcomputer 6b,
P32 is a terminal for inputting serial data of the timer microcomputer 6b, P33 is a terminal for outputting serial data of the timer microcomputer 6b, and P34 is a terminal for outputting a serial transfer signal of the timer microcomputer 6b. This is a terminal for

Next, the operation will be explained using FIGS. 2 to 4.

When performing serial data transfer, the remote control microcomputer 7b outputs a clock signal from the clock output terminal P21 for serial transfer, inputs data from the serial input terminal P23 in synchronization with the rising edge of the clock signal, and inputs the data at the rising edge of the clock signal. Data is output from the serial output terminal P22 in synchronization. Similarly, when the timer microcomputer 6b performs serial data transfer, the clock output terminal P of the remote control microcomputer 7b is connected to the serial transfer clock input terminal P31 of the timer microcomputer 6b.
Data is input from the serial input terminal P33 in synchronization with the rise of the clock signal output from H, and data is output from the serial output terminal P32 in synchronization with the rise. FIG. 2 is a waveform diagram of each terminal when a transfer is requested from the control timer 3 to the remote controller unit 2, and 100 shown in FIG. 101 shown in b) is the terminal P21
, P31 waveform, 102 shown in FIG. 2(c) is the terminal P2
2. This is the waveform of P32. Here, when requesting a transfer from the control timer 3 to the remote controller Uni-Node 2, first set the output level of the serial transfer request output terminal P34 of the timer microcomputer 6b to H, and then send the transfer request signal 100. Output. When the remote control microcomputer 7b detects that the serial transfer request input terminal P22 of the remote control microcomputer 7b becomes H, it determines that there is a transfer request. Next, the micro con beam tough b for the remote control receives the clock signal 1' shown in FIG. 2(b) from the terminal P21.
01, and in synchronization with this, the control word 102 shown in FIG. 2(c) is output from the terminal P21. FIG. 3 is a waveform diagram at the same terminal as in FIG. 3 when the remote controller unit 2 requests transfer to the control timer 3. As shown in FIG. 3(b), the clock output terminal P21 of the microcomputer 7b for
When the timer microcomputer 6b detects that the human power at the clock input terminal 1) 31 is at L level for 11 seconds, the timer microcomputer 6b outputs the input to the terminal P31 as I(
After confirming that the level has been reached, connect the terminal P for the request output.
34 ■】Reher Seso]-shi, the following control timer 3
The same procedure as for a transfer request from to the remote controller unit 2 is performed.

Next, the method for determining whether the control timer 3 is connected is explained in the fourth section.
This will be explained using figures. After the power-on reset, the remote control microcomputer 7b outputs the clock output terminal P21.
is set to L level for t2 seconds as shown in FIG. 3(a), a transfer request signal 101 is output to the control timer, and there is no transfer request from the control timer 3 after a delay of 13 seconds. In other words, if the request output terminal P24 of the remote control microcomputer 7b is at L level 100a as shown in FIG. When there is a transfer request from the timer 3, that is, the request output terminal P24 of the remote control microcomputer 7b goes to H level 100b as shown in FIG. 4(b).
If so, it is determined that the control timer 3 is connected.

〔Effect of the invention〕

As described above, according to the present invention, since the data transfer between the remote controller unit and the control timer in the air conditioner control device is serial transfer, it is possible to use fewer input/output terminals for data transfer. This has the advantage that a large amount of data can be transferred, and a serial transfer request can also be used to determine whether or not a timer is connected.

[Brief explanation of drawings]

FIG. 1 is a circuit diagram showing a control device for an air conditioner according to an embodiment of the present invention, and FIGS. 2(a) to 4(c) to 4(a)
-(c) are waveform diagrams of various parts to explain the operation of the circuit shown in Fig. 1, Fig. 5 is a block diagram showing a conventional air conditioner, and Fig. 6 is a circuit of the control timer shown in Fig. 5. It is a diagram. 2 is a remote controller unit, 3 is a control timer, 6b is a timer microcomputer, 7b is a remote control micro combinator, P21 to P24. P3
1-P34 is a terminal.

Claims (1)

[Claims] A timer control operation mode in which a control timer is connected to the remote controller of the air conditioner and the operating state of the air conditioner is changed according to the time setting of the control timer; In a control device for an air conditioner having two control modes, a temperature setting shift control operation mode in which the machine is operated by shifting the temperature by a predetermined temperature from the set temperature, data transfer between the remote controller and the control timer is performed using serial data. At the same time, the remote controller transmits a transfer request signal in the serial transfer to the control timer, and if the remote controller does not receive a response signal from this timer after a certain period of time, the control timer is connected. A control device for an air conditioner, comprising means for determining that the control timer is connected when the remote controller receives a response signal from the control timer within the predetermined time period. .