JPS6361835A - Setting of address in air-conditioning apparatus - Google Patents

Abstract

PURPOSE:To reduce the number of transmission ports in an outdoor machine and ensure the setting of address of the outdoor machine, by a method wherein an address setting signal is transmitted sequentially to an indoor machine, in which a photocoupler is in the condition of OFF, among the indoor machines, in which the setting of the address has not been effected. CONSTITUTION:In a condition that the connections of indoor machines 21, 22...2n to an outdoor machine 1 at site are finished, an address setting control signal is supplied from the outdoor machine 1 through a signal transmitting path 3, while the indoor machine, whose photocoupler 4 is in the condition of OFF, takes an address setting signal, received by the signal receiving unit, into a central control unit, and sends back a responding signal from a signal transmitting unit. The outdoor machine 1, which has received the responding signal, supplies the address setting signal to effect the setting of the address. Thereafter, the indoor machine 1 puts the SCR 5 of itself in an intercepted condition based on the finishing of the address setting, and sends an address confirming signal back to the outdoor machine 1 through the signal transmitting path 3. According to this method, the setting of address in the indoor machine is not necessitated at all, and the setting of the address is effected based on a signal from the outdoor machine 1, therefore, the correct setting of the address may be effected.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to an address setting method in an air conditioning system, and more specifically, the present invention relates to an address setting method in an air conditioning system. In an air conditioning system in which the indoor unit is controlled by the main station,
The present invention relates to a method of setting an address of an indoor unit in order to transmit data to a desired indoor unit.

<Conventional technology> Conventionally, multiple indoor units are connected to one outdoor unit, and necessary control is performed by transmitting control data to each indoor unit using the outdoor unit as the main station. Air conditioning system is provided.

There are relatively small-scale air conditioning systems of this kind for general households, and large-scale ones that are built into high-rise buildings.

In any size air conditioning system, it is necessary to ensure reliable signal transmission between the outdoor unit and the indoor unit. A configuration in which the outdoor unit and indoor unit are connected by a signal transmission line, and an address is set by operating the address switch for each indoor unit, and the outdoor unit is connected to the outdoor unit by a shared signal transmission line. A configuration has been adopted in which only necessary data can be received by identifying signal transmission between the indoor unit and the indoor unit using address data.

<Problems to be solved by the invention> When the above configuration (■) is adopted, there is a problem that as the number of indoor units increases, the length of the signal transmission line becomes longer and the wiring work becomes more extensive. be. In particular, in the case of an air conditioning system built into a high-rise building, the distance from the outdoor unit to the indoor unit becomes large, so the above-mentioned problems become noticeable. Furthermore, in the outdoor unit, in order to send and receive signals to and from each indoor unit, it is necessary to incorporate a number of transmission ports equal to the number of indoor units.
Another problem is that the configuration of the outdoor unit itself becomes complicated.

Furthermore, when the above configuration (■) is adopted, it is possible to shorten the signal transmission line, and has the advantage that only one transmission port can be incorporated into the outdoor unit. However, in order to be able to identify the serially transmitted data and import only the necessary data, it is necessary to set the address of the indoor unit on site, so there is a possibility of making a mistake in the address setting. If the address setting is high and the address setting is incorrect, a problem arises in that a transmission abnormality occurs and normal air conditioning cannot be performed. In particular, with dip switches that are commonly used for address settings, address settings are expressed in BCD codes, so as the number of indoor units increases, it becomes more troublesome to operate the dip switches, and there is a possibility of making a mistake in setting the address. This will result in higher prices.

<Object of the invention> This invention was made in view of the above problems,
It is an object of the present invention to provide an address setting method in an air conditioning system that can reduce the number of transmission ports in an outdoor unit and can reliably prevent the inconvenience of setting the address of the outdoor unit incorrectly.

Means for Solving the Problems> In order to achieve the above object, the address setting method in the air conditioning system of the present invention is such that each indoor unit has a photocoupler for controlling the address setting by the outdoor unit. and a switching means for selecting a conductive state in an address non-setting state, and the photocoupler of each of the indoor units is sequentially connected to the switching means of the separate indoor units in a non-loop manner. The photocoupler turns off the address setting signal transmitted from the outdoor unit.
When an indoor unit that is F and does not have an address set receives it, it sets its own address based on the address setting signal transmitted from the outdoor unit and switches its own switching means to the open state. be.

However, the actual address setting signal may be transmitted after transmitting the address setting control signal.

Effect> With the address setting method of the above configuration, multiple indoor units are connected to one outdoor unit, and each indoor unit is controlled by serial data transmission with the outdoor unit as the main station. Before doing so, it is sufficient to first transmit an address setting signal from the outdoor unit, and the indoor unit whose photocoupler is OFF and whose address has not been set sets its own address by receiving the address setting signal. At the same time, it switches its own switching means to an open state.

Next, when an address setting signal for setting an address different from the above-mentioned address is transmitted from the outdoor unit, the indoor unit having the photocoupler which is turned off based on the above-mentioned switching means going into the open state. , sets its own address by receiving the address setting signal, and switches its own switching means to an open state.

Thereafter, addresses can be set for all indoor units by sequentially transmitting address setting signals from the outdoor units in the same manner.

In addition, if the actual address setting signal is to be transmitted after transmitting the address setting control signal, the actual address setting signal is transmitted based on a response signal based on the reception of the address setting control signal by the indoor unit. can be done.

<Example> Hereinafter, embodiments will be described in detail with reference to the accompanying drawings showing examples.

FIG. 1 is an electrical circuit diagram showing an embodiment of an air conditioning system for implementing the address setting method of the present invention.
One outdoor unit (1) and n indoor units (21) (22)
... (2n) are connected by a signal transmission line [3].

To explain in more detail, the indoor unit includes a signal receiving section (not shown) that is connected to the signal transmission line (3) and receives a signal from the outdoor unit [1], and the signal transmission line (3). It has a signal transmitter (not shown) that supplies signals indicating the status of the indoor unit, etc., and also includes a photocoupler (4) for address setting control and a 5cR (5) as a switching means. The photocoupler (4) is connected to the SCR [5] of another indoor unit (for example, an adjacent indoor unit), and the photocoupler (4)
) and scR[5) are connected in series, and an alternating current voltage is applied thereto. Furthermore, a central control section (Fig. (not shown) is provided. Incidentally, the central control section applies a predetermined gate bias to the gate terminal of 5CR (5) to make 5CR (5) conductive only when its own address is not set.

Then, the photocoupler [4] of the above indoor unit 1 and the other 1
The connection to 5CR (51) of the indoor unit is the photocoupler (4) of any indoor unit, and the S of any other indoor unit.
CR (5) is S CR (5), photocabra [
4] and is formed in a non-loop shape that is not connected to.

Furthermore, although the configuration of the outdoor unit (1) is not shown,
A signal transmitting section that sends data to the signal transmission line (3), a signal receiving section that receives data transmitted from the signal transmission line (3), and controlling the signal transmitting section and the signal receiving section, It also has a central control section that performs necessary control of each section.

The operation of the air conditioning system having the above configuration is as follows.

At the site, the indoor unit (21) is compared to the outdoor unit (1) (
22) When the connection of (2n) is completed, it is sufficient to supply the address setting control signal from the outdoor unit (1) through the signal transmission line (3), and the photocoupler (4)
is in the OFF state (the indoor unit (in Fig. 1) is
2n)) takes in the address setting signal received by the signal receiving section into the central control section, and returns a response signal from the signal transmitting section. Then, the outdoor unit (1) that has received the response signal performs address setting by supplying an address setting signal to the indoor unit. After that, based on the completion of the address setting, the own SCR [5] is turned off, and the outdoor unit [1] is turned off through the signal transmission line (3).
] sends back an address confirmation signal.

Next, when the address setting control signal is transmitted again from the outdoor unit [1], the above series of operations will be performed between the indoor units for which the photocoupler (4) is OFF among the indoor units for which the address is not set. By doing so, it is possible to set the address of the corresponding indoor unit and to turn off the photocoupler (4) of the next indoor unit.

Thereafter, by sequentially repeating the above series of operations, addresses can be set for all indoor units.

Note that the above explanation does not explain the function that determines when the address settings for all indoor units have been completed, but for example, if the address is not set and the photocoupler (4) is OFF indoors, If a response signal is not returned for a predetermined period of time after the address setting control signal is transmitted to the machine, it can be determined that the address setting has been completed.

As above, all indoor units (21) (22)...
After completing the setting of the address for (2n), it is only necessary to transmit the control signal along with the address signal from the outdoor unit (1) through the signal transmission line (3), and the above address signal matches the own address. Only the indoor unit takes in the control signal and performs control based on the control signal.

Then, each indoor unit sends signals including its own address signal, temperature setting signal, indoor temperature detection signal, etc. to the outdoor unit (
1).

Hereinafter, by sequentially performing the above operations, the outdoor unit (1)
All indoor units can be controlled under the control of

As is clear from the above explanation, there is no need to perform any address setting operations on the indoor unit, and the address setting is performed based on the address setting signal from the outdoor unit (1), so accurate address setting is possible. Therefore, signals can be reliably exchanged between the outdoor unit (1) and the indoor unit without causing transmission abnormalities.

Note that the present invention is not limited to the above-described embodiments, and various design changes can be made without departing from the gist of the invention.

<Effects of the Invention> As described above, the present invention performs address setting by transmitting an address setting signal in order from indoor units whose photocouplers are in the OFF state among the indoor units for which no address setting has been performed. This has the unique effect of making it possible to set a suitable address and preventing transmission abnormalities from occurring.

[Brief explanation of the drawing]

The drawing shows a diagram for implementing the address setting method of the present invention.
FIG. 1 is an electrical circuit diagram showing an example of an air conditioning system.

Claims (1)

[Claims] 1. A plurality of indoor units are connected to one outdoor unit,
In an air conditioning system where the outdoor unit is the main station and each indoor unit is controlled by serial data transmission,
Each indoor unit has a photocoupler for address setting control by the outdoor unit, and also has switching means for selecting a conductive state in an address non-setting state. are sequentially connected in a non-loop manner to the switching means of separate indoor units, and the indoor units for which the photocoupler is OFF and no address setting is performed receive the address setting control signal transmitted from the outdoor unit. An address setting method for an air conditioning system, characterized in that the air conditioning system sets its own address based on an address setting signal transmitted from an outdoor unit and switches its own switching means to an open state. 2. The address setting method in an air conditioning system according to claim 1, wherein after transmitting the address setting control signal, an actual address setting signal is transmitted.