JPH0225657A - Control device for air conditioner - Google Patents

Abstract

PURPOSE:To reliably receive the data from the air conditioning unit so as to perform the comfortable air conditioning by changing the time count by a display timer in the air conditioning control means corresponding to the transmission cycle. CONSTITUTION:When the air conditioning control means 2 sends out the control signals such as the set temperature to air conditioning units 1, 1,..., one transmission cycle is started, whereupon the respective air conditioning units 1, 1,... send out various data to the air conditioning control means 2 in the order of the unit address by means of their own unit timers T0-T2. When the final address is reached, the air conditioning control means 2 newly sends out the control signal to start the following cycle. In this cycle, the air conditioning control means 2 has already started the display timers T3, T4 after outputting the control signal, and, if there is an omission of unit address, an information outputting means 26 outputs the interruption signal to display the operating conditions on the indicator 22 when the display timer T4 counts up the time. When one transmission cycle is completed, a timer changing means 27 changes the time count of the display timer T4 and the display interval as well.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a control device for an air conditioner that controls a plurality of air conditioning units in the same operating state as a group.
In particular, it relates to display processing measures.

(Prior Art) Conventionally, as a control device for this type of air conditioner, for example, as disclosed in Japanese Unexamined Patent Publication No. 59-63438, a large number of air conditioning units each having a built-in heat exchanger are provided, and these A single remote controller is provided for uniformly group-controlling multiple units in the same operating state as required, and the output of the operation command signal from the remote controller is controlled by nothing. It is known to operate or stop two air conditioning units at the same time to air condition a room.

(Problem to be Solved by the Invention) By the way, when controlling a plurality of air conditioning units as a group as described above, it is necessary to check whether the operating status of each air conditioning unit is normal or abnormal, or whether the antifreeze operation of the built-in heat exchanger, etc. In order to determine whether or not each air conditioning unit is required, it is preferable to identify each air conditioning unit using a remote controller such as the one described above.From this relationship, it is recommended to set a unit address for each air conditioning unit in advance. It will be done.

When the remote controller outputs data such as set temperature, each of the above air conditioning units operates its own unit timer, and outputs data such as suction temperature in the order of the above two-nit address. . on the other hand,
When the remote controller outputs a control signal, it receives the output data of each air conditioning unit, and when it reaches the final unit address, it completes one transmission cycle and outputs a new control signal.

Further, in addition to a main routine for executing transmission processing with the air conditioning unit, the remote controller is equipped with a display processing routine for displaying various operating information on a display section. and,
This display processing routine is executed after outputting a control signal and after receiving data from an air conditioning unit. In addition, when no air conditioning unit is connected to any unit address, the display timer outputs an interrupt signal and data for each air conditioning unit is executed. is configured to be executed while receiving the .

That is, as shown in FIG. 6, for example, in the air conditioning unit whose unit address is #1, the unit timer operates after transmitting the control signal from the remote controller (point A1), outputs data at point A2, and After the controller transmits the control signal, the display timer is activated, and since the air conditioning unit with unit address #0 is not connected, the display process is performed at point B1 due to the time-up of the display timer. The display timer and unit timer are set so that execution of this display routine and data reception do not overlap.

However, since the display timer and unit timer are provided separately and operate based on oscillators provided in the air conditioning unit and remote controller, the execution of the display processing routine may be affected by errors in the oscillators. and data reception sometimes overlapped. At that time, the remote controller is no longer able to receive the output data of the air conditioning unit and must process transmission abnormalities, resulting in the problem that accurate air conditioning control cannot be performed.

The present invention has been made in view of the above, and by changing the counting time of the display timer in the air conditioning control means in accordance with the transmission cycle, the display processing time and the reception processing time can be changed to the same time.
Even if it is superimposed in a transmission cycle, it will not be superimposed in the next transmission cycle, so
The purpose is to be able to reliably receive data from the air conditioning unit and provide comfortable air conditioning.

(Means for Solving the Problem) In order to achieve the above object, the measures taken by the invention according to claim (1) are, as shown in FIG. Unit (1).

(1), ... and each air conditioning unit (1), (1).

... is set in the unit address order in which all unit addresses are set, one transmission cycle is set, and each air conditioning unit (1
), (1), ... air conditioning control means (2) that transmits and receives control signals
) is assumed to be a control device for an air conditioner.

And each of the above air conditioning units (1), (1).

In . . . , a data output time is set so as to output data in the order of the unit addresses, and a unit timer starts counting every transmission period of the air conditioning control means (2) based on a preset transmission state. (TO-72) and a transmitting means (1) that outputs self data to the control means (2) according to the time-up of the unit timer (T0 to T2).
4) is provided.

On the other hand, the air conditioning control means (2) includes a receiving means (25) for receiving output data of each of the air conditioning units (1), (1), ..., a display section (22) for displaying operating information, Display timers (T3, T4) that start counting from a preset transmission state, time up in response to the unit address, and are reset to sequentially count display intervals.
and is provided. In addition, the air conditioning control means (2)
includes an information output means (26) that outputs an interrupt signal when the display timer (T3.T4) times up and outputs operation information to the display section (22), and the display timer (T3.T4).
4) is provided with a timer changing means (27) for changing the display interval counted in accordance with the transmission cycle.

Further, the means taken by the invention according to claim (2) is that in the invention according to claim (1), the air conditioning control means (2) transmits a control signal to each air conditioning unit (1), (1),... A transmitting means (2) for transmitting is provided, and after the transmitting means (24) transmits, a receiving means (25) receives the output data of each air conditioning unit (1), (1), ... for each unit address. In addition, one transmission cycle is set from the transmission of the control signal by the transmission means (24) until the next transmission of the control signal.

On the other hand, the unit timers (T0 to T2) and display timers (T3, T4) of the air conditioning unit (1) set to the youngest unit address are configured to start counting after the transmission means (24) transmits the control signal. has been done.

(Function) With the above configuration, in the inventions according to claims (1) and (2), for example, the air conditioning control means (2) transmits a control signal such as a set temperature to the air conditioning units (1), (1), etc. Then,
One transmission cycle starts, and each air conditioning unit (1),
(1), ... are their own unit timers (T
o~T2)1. :Therefore, various data are sent to the air conditioning control means (2) in the order of unit addresses, and when the final address is reached, one transmission cycle is completed, and the air conditioning control means (2) sends a new control signal and starts the next transmission. Start the cycle.

In this transmission cycle, the air conditioning control means (2) starts the display timer (T3, T4) after outputting the control signal, and if there is a omission in the unit address, for example,
If the air conditioning unit (1) is not set at unit address #0, the information output means (26) outputs an interrupt signal when the display timer (T4) times up and displays operating information on the display section (22). There is. Then, when one transmission cycle ends, the timer changing means (27) changes the display timer (T
4) Change the counting time, for example, from 40m5ec to 4
The display interval has been changed to 1m5ec.

(Effect of the invention) Therefore, according to the inventions of claims (1) and (2),
Since the counting time of the display timer (T4) is changed in accordance with the transmission cycle, even if display processing and reception from the air conditioning unit (1) overlap in one transmission cycle, the counting time of the display timer (T4) is changed in accordance with the transmission cycle. Since the signals can be received without being superimposed, air conditioning control can be performed based on accurate data, and comfortable air conditioning can be achieved. Further, since transmission abnormalities due to no data reception can be prevented, unnecessary maintenance and the like can be prevented.

(Example) Embodiments of the present invention will be described in detail below with reference to the drawings.

As shown in Fig. 2, (1), (1), ... are indoor units constituting a plurality of air conditioning units (seven in the drawing) each having an indoor heat exchanger and an expansion mechanism inside. , the indoor units (1), (1)... are connected in parallel to an outdoor unit that has a compressor, a four-way switching valve for cold/warm switching, and an outdoor heat exchanger inside (not shown). The refrigerant circulation system is connected to the refrigerant circulation system so that the refrigerant can be circulated.

Moreover, (2) is each indoor unit (1) mentioned above.

(1) A control device (hereinafter referred to as a remote control device) that uniformly groups devices in the same operating state.

), the remote control device (2) has a key manual section (21) for the operator to appropriately select the driving mode, etc., and also displays driving information such as the selected driving mode and the current driving state. A display section (22) for displaying is provided. Furthermore, inside the remote control device (2), there is a control section (23) for determining the above-mentioned indoor units (1), (1), etc., and a control section (23) for determining each of the indoor units (1), (1), ...
1).

. . . together with the operation mode command signal, a control signal including a start order signal and a specific signal for the master unit, and the operation information of each indoor unit (1), (1), . . .

A pair of transmitting section (24) as a transmitting means and receiving section (25) as a receiving means are provided.

Furthermore, inside the remote control device (2), a control section (2) is provided.
5) is provided with an information output section (26) which is an information output means for outputting operating information to the display section (22) in response to the output signal, and also includes first and second display timers (T3), (
T4) and a timer changing section (27) which is a timer changing means.

The information output section (26) operates after the transmitting section (24) sends the data, after the receiving section (25) receives the data, and after the image display timer (T
After the time-up in 3) and (T4), the process moves to the display processing routine and outputs the driving information. Further, the first display timer (T3) starts counting after the data is transmitted from the transmitting section (24) and is set to 90m5eC, and the second display timer (T4) starts counting after the data is transmitted from the transmitter (24).
, (1)... is configured to start counting in the order of the unit address, and is reset to sequentially count the display interval, and the screen display timers (T3) and (T4) are provided in the remote control device (2). It is operated by a clock signal from its own clock circuit. Then, the timer changing unit (27) sets a second display timer (T
4) The display interval (counting time) is changed.

On the other hand, each of the seven indoor units (1), (1), . An indoor control unit (12) that determines the operating state of the equipment to be controlled, and a main body control unit (13) that actually controls the internal equipment to the required operating state are provided,
Sends the operation information of each data such as own unit address signal, internal equipment abnormality/normality determination signal, built-in heat exchanger antifreeze operation request signal, or drain abnormality to the remote control device (2). Along with the remote control device (2)
A pair of indoor transmitting units (14) as transmitting means and indoor receiving units (14) as receiving means for receiving control signals from the
5) is provided. And the above seven indoor units (1).

The unit address in (1) is determined by each address setting section (
31)... arbitrarily, for example, #0. #1, #2
．． #7. #8. #14. #15 is set respectively.

Furthermore, each of the above indoor units (1), (1),... has a first... second and third unit timers (TO);
, (TI), and (T2), and the first unit timer (TO) starts counting after the control signal is output from the remote controller (2), that is, after the indoor receiver (15) receives the control signal. , 100m See. Further, the second unit timer (T1) counts the time of its own data transmission in accordance with its own unit address, and is configured to be reset at 40 m See, and the third unit timer (T2) Counting starts after data is transmitted from the indoor unit (1) one unit before the own unit address and after the second unit timer (T1) times up, and is set to 10 m5ec. and each unit timer (TO).

(TI) and (T2) are each indoor unit (1).

(1) It is operated by the clock signal of the unique tarok circuit provided in...

Next, each of the above indoor units (1), (1),...
The configuration and transmission control operation of the remote control device (2) will be explained based on the control flow and control timing.

Therefore, first, the remote control device (2) can be used for, for example, up to 16 indoor units (1).

(1), are configured so that they can be connected, and as shown in Fig. 5, after outputting the control signal of 1, the unit address is specified in order and the data of each indoor unit (1), (1), etc. is transmitted. The period from reception to output of the next control signal is set as one transmission cycle.

And each of the above indoor units (1), (1).

... transmits data every transmission cycle, so the control flow of these indoor units (1), (1), ... will be explained first.

As shown in FIG. 3, in step STI, the remote control device (2) determines whether or not it has finished transmitting the control signal, waits in step ST1 until the transmission is finished, and when it is finished,
After proceeding to step ST2 and setting the counter to zero, proceeding to step ST3, it is determined whether or not the first unit timer (TO) has timed up. The first unit timer (TO) starts counting after receiving the control signal from the remote control device (2) and times up after 100 m5ec, so the chip ST3 waits for this time-up and when it times up, the process moves to step ST4. Then, in this step ST4, it is determined whether or not its own unit address is #0, and if the unit address is #, the process moves to step 5T41, where the indoor transmitter (14) transmits data to the remote control device (2). do. In other words, as shown in FIG.
(C2), and then, although not shown in the control flow diagram, the indoor unit (1) with the next unit address #1 activates the third unit timer (T2) (10m se
c) After the third unit timer (T2) times up, the data is transmitted (C3). Then, sequentially 16
The indoor units (1), (1), . . . transmit data (C4), and one transmission cycle ends.

Next, if the indoor unit (1) is not set at a unit address before its own unit address, for example, as shown in Figure 6, unit address #0 is set, or as shown in Figure 7, , unit address #0 to #7
If the indoor unit (1) is not set in the control flow shown in FIG.
It is determined whether or not 1) has timed up. This second
The unit timer (T1) is the first unit timer (T1).
Counting starts after the time-up of O) (Fig. 6 A3.7)
(see Figure E1) and is set to 40m5ec. Then, the process moves to step ST6, and other indoor units (1
) is received, and the process returns to step ST5 until the data is received. After that, when the second unit timer (T1) times up or another indoor unit (1) transmits data, step S
After moving to T7 and adding 1 to the counter, step ST
Move on to 8. In this step ST8, it is determined whether or not the own unit address and the counter match. For example, in the case shown in FIG. 6, since the own unit address counter and the own unit address counter match, the process moves to step ST9.
In the case of FIG. 7, since they do not match, the process returns to step ST5.

In the case shown in FIG. 6, in step ST9, the third
It is determined whether the unit timer (T2) has timed up or not, and this third unit timer (T2) starts counting when the second unit timer (T1) times up (
(see Figure 6 A4) and is set to 10m5ec. The unit waits in step ST9 until the third unit timer (T2) times up, and when it times up, the process moves to step 5TIO and data is transmitted (see A2 in FIG. 6).

On the other hand, in the case shown in FIG. 7, the operations from step ST5 to step ST8 are repeated until the own step address and the counter match, and the second unit timer (T1)
Please update sequentially E2 and E3 in Figure 7. ...), if the unit address and counter match, as mentioned above,
Start the third unit timer (T2) (Fig. 7F).
4), transmit data by time-up (see 7th
(See Figure F5).

In addition, if there is a omission in the unit address, for example, as shown in FIG. 8, if indoor unit (1) is set to unit addresses #1 and #3, the indoor unit with the younger unit address #1 ( 1) is controlled in the same way as in Fig. 6, while the indoor unit at unit address #3 (
1), there is no indoor unit 0) with unit address #2, so indoor unit (1) with unit address #1 is
sends data [7] When finished, the second unit timer (T1
) (see FIG. 8 F1), then starts the third unit timer (T3) (see FIG. 8 F2), and transmits data after time-up (see FIG. 8 F3).

As mentioned above, each indoor unit (1), (1),...
The data transmission time is determined in the order of the unit addresses by each unique unit timer (TO) to (T2) after the control signal is transmitted from the remote control device (2).

Next, the control flow of the remote control device (2) will be explained based on FIG.

First, in step STI 1, it is determined whether or not the transmission of the control signal has been completed, and step 5T1 is continued until the transmission of the control signal is completed.
1, and when it is finished, the process moves to step 5T12, and the display processing routine starts, and the information output section (26) outputs the display section (2).
2) Output the operating information to (see Figure 6 to Figure 8 82)
. Subsequently, the main routine returns to step 5T13, where the first display timer (T3) starts counting, and this first display timer (T3) starts counting.
The display timer (T3) is set to 90m5ec.

Thereafter, the process moves to step 5Ti4, where the receiver (25) determines whether or not the output data of the indoor unit (1) has been received, and as described above, the first unit tie 7 (TO) of the indoor unit (1) has reached 100 m5ec. Since it is set,
In principle, no data is received, and step 5T1
5, it is determined whether or not the first display timer (T3) has timed up, and the process continues in step 5T until the time has expired.
On the other hand, when the time is up, the process returns to step 5T16.
Then, the display process is performed again and the driving information is displayed on the display section (22).
(See FIGS. 6 to 8 82).

Next, the process moves to step STI 7, and after setting the total number of unit addresses specifying the counter to, for example, 15,
Proceeding to step 5T18, it is determined whether the flag is "1" or not. This flag is one of the features of the present invention, and is set by the timer change unit (27), and is set to "1" at the time of initialization, which is the first transmission, and the determination in step 5T18 is YES, Step 5
It will be moved to T19. And this step 5T19
, the timer changing unit (27) changes the second display timer (T
4) is set to 40 m5ec, and after f, the process moves to step 5T20, and the second display timer (T4) continues counting.

From this Stella 5T20, the process moves to step 5T21, and the output data of the indoor unit (]) is received 1. If it is not received, the process moves to step 5T22, and it is determined whether or not the second display timer (T4) has expired by 7', and the process returns to step 5T21 until the time has expired. In other words, it monitors whether or not data is received for 40m5ec, and as shown in Figures 6 to 8, if indoor unit (1) is not set in unit address #0, data is not received. Since no reception is received, when the time is up, the process moves to step 5T2B and the driving information is displayed on the display section (2) again.
2) (see B1 in FIGS. 6 to 8). In other words,
Specifically, in FIG. 6, the indoor unit (1) with unit address #1 has each unit timer (TO) to (T
2) transmits data after 150m5ec when the time-up occurs (see A2). image display timer (T3),
Since the time point (T4) times up is 130 m5 ec, the information output section (26) outputs an interrupt signal by the timer to display the operating information.

After that, the process moves to step 5T24, and the flag is set to "1" again.
As mentioned above, in this transmission cycle, “1” is determined.
is set, the process moves to step 5T25 and the second
Reset the display timer (T4) and set it to 40m5ec again. Then, the process moves to step 5T26, and after subtracting 1# from the counter, the process moves to step 5T27, where it is determined whether the counter has become smaller than zero, that is, all unit addresses are designated and the indoor unit (1) is selected.

It is determined whether or not the data of (1), .

Then, as described above, it is determined whether data has been received within <40m5ec, and as shown in FIG. 7, if the indoor unit (1) is not set up to unit address #8,
The operations from step 5T20 to step 5T27 are repeated to sequentially update the second display timer (T4) to count the display interval, and each time the second display timer (T4) times up, an interrupt signal is sent in step 5T23. The operation information is displayed on the display section (22) by (B1 in Fig. 7).
reference).

On the other hand, in step 5T21 above, the indoor unit (
When the output data of 1) is received, the process moves to step 5T28, where reception processing is performed, and then the process moves to step 5T29, where the received driving information is output to the display section (22) (Figs. 6 to 6).
(See Figure 8 84).

Next, the process moves to step 5T30, and the second display timer (T
4) is set to 30m5ec. In other words, the second display timer (T4) once after data reception shortens the counting time,
Display processing timing and reception processing timing are prevented from overlapping. Thereafter, the process returns to step 5T26 and the above-described operations are repeated. For example, as shown in FIG. 8, the indoor unit (1
), 30m
Display processing is performed again after 5ee (see B5). Then, after receiving the data from the indoor unit (1) with the unit address #3, display processing begins (see B4).

Repeat this operation until the counter becomes less than zero.
That is, when all unit addresses are specified and completed, the process moves to step 5T31, the flag is inverted, and one transmission cycle is completed.

Then, the next transmission cycle starts again from step STI 1, at which time the above-mentioned step 5T1
8 and step 5T24 becomes NO, the process moves to step 5T32 and step 5T33, and the timer change section (
27) changes the first display timer (T4) from 40m5ec to 41m5ec. Due to this change, when the interrupt signal is output by the timer in the information output section (20) (6th
(see Fig. 8 B1) is 1rtIs from the previous transmission cycle.
EC will be extended. Thereafter, when one transmission cycle ends, the slug is reversed again in step 5T31, and in the next transmission cycle, the counting time of the second display timer (T4) is returned to 40m5ec, so that every transmission cycle Change the counting time of the second display timer (T4).

Also, in step 5T14 above, the first display timer (
When data is received during counting of T3), step 5T3
4 and 35, display processing is performed after reception processing, and the process returns to step 5T13 again to start the first display timer (T3).

Therefore, each display timer (T3) of the remote control device (2)
), (T4) and each indoor unit (1).

An error occurs between the unit timers (To) to (T3) of (1), ..., and even if the indoor unit (1) transmits data during the display processing of the remote control device (2), the remote control device (2) ) will not be able to receive data. Specifically, for example, there is a case where point 81 in FIG. 7 and point E5 overlap. However, in the present invention, since the counting time of the second display timer (T4) changes every transmission cycle,
Even if data cannot be received in one transmission cycle, data can be received in the next transmission cycle. Therefore, precise air conditioning control can be performed, and operation stoppages and unnecessary maintenance due to transmission abnormalities can be prevented.

In addition, in this embodiment, the fourth display timer (T4
), but the counting time is changed every 2 transmission cycles.
Alternatively, it may be changed once every 3 transmission periods, or even once every 16 transmission periods. In other words, the remote control device (2) repeats 16 transmission cycles to each air conditioning unit (1).

Since it is determined that the transmission is abnormal if data is not received from (1), .

Further, although this embodiment has been described as a multi-type air conditioner, it may include a plurality of air conditioning units each having one refrigerant circulation system.

Furthermore, the counting time and number of display timers (T3) and (T4) and unit timers (To) to (T2) are not limited to those in the embodiment.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of the present invention. 2 to 8 show one embodiment of the present invention, and the second embodiment of the present invention is shown in FIG.
The figure is a refrigerant circuit diagram of the air conditioner, FIG. 3 is a control flow diagram of the indoor unit, and FIG. 4 is a control flow diagram of the remote control device. 5, 6, 3, 7, and 8 are transmission timing diagrams showing signal exchange between the remote control device and the indoor unit, respectively. (1)...Indoor unit, (2)...Remote control device (air conditioning control device), (14)...Indoor transmitter, (15
)... Indoor receiving section, (22)... Display section, (23)
...control section (23), (24)...transmission section, (25)
...Reception section, (26) ... Information output section, (TO) (
T1), (T2)...Unit timer, (T3)
, T4)...Display timer. ,? 1 Patent applicant: Daikin Industries, Ltd.
Attorney Patent attorney 1) Hiroshi and 2 others...;2
C3 C4CI 5 Figure 3 Figure 4

Claims (2)

[Claims] (1) Multiple air conditioning units with heat exchangers (1),
(1),..., and all unit addresses are specified in the order of the unit addresses in which each air conditioning unit (1), (1),... is set, and one transmission cycle is set, and each air conditioning unit (1), (1),... ... and an air conditioning control means (2) for transmitting and receiving control signals, in which each of the air conditioning units (1), (1), ... is configured to output data in the order of the unit addresses. a unit timer (T0 to T2) that starts counting every transmission period of the air conditioning control means (2) based on a preset transmission state, and the unit timer (T0 to T2) sets the data output time to . The air conditioning control means (21) is provided with a transmitting means (14) that outputs its own data to the control means (2) when the time is up, and the air conditioning control means (21) is provided with a transmission means (14) that outputs its own data to the control means (2) when the time is up. A receiving means (25) that receives the output data of ..., a display section (22) that displays the operating information, and counting starts from a preset transmission state and is reset when the time is up in accordance with the unit address. Display timers (T3, T4) that sequentially count display intervals; and information output means (26) that outputs an interrupt signal and outputs operating information to the display section (22) when the display timers (T3, T4) time up. ) and the above display timer (T3, T4)
1. A control device for an air conditioner, comprising: timer changing means (27) for changing the display interval counted by the timer according to the transmission cycle. (2) The air conditioning control means (2) each air conditioning unit (1), (
1), ... is provided, and after the transmission means (24) transmits the control signal, the receiving means (25) transmits the control signal to each air conditioning unit (1), (1), for each unit address.
It is configured to receive the output data of..., and one transmission period is set from the transmission of the control signal of the transmission means (24) until the next transmission of the control signal, and the unit address is set to the youngest unit address. Unit timer (T0 to T2) and display timer (T3, T4) of air conditioning unit (1)
2. The control device for an air conditioner according to claim 1, wherein counting starts after the transmitting means (24) transmits the control signal.