JP2708256B2 - Air conditioner address setting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention automatically sets an address of each air conditioner in an air conditioner having a plurality of air conditioners connected to one remote controller. Related to the device.

[Prior Art] In a conventional multi air conditioner, each indoor unit is provided with a dip (Dual-In-Pole) switch for setting an address corresponding to a type number indicating each indoor unit, and the dip switch is provided. The configuration is such that the address of each indoor unit is set by manual setting.

[Problems to be Solved by the Invention] However, in the conventional device, the setting of the dip switch must be performed manually at the time of installation of the multi air conditioner, and mistakes such as forgetting to set or incorrect setting are likely to occur.
When the air conditioner is operated in a state where settings have been forgotten or incorrectly set, there is a problem that a malfunction occurs.

The purpose of the present invention is to make the setting of the dip switch unnecessary,
It is an object of the present invention to provide a device that can automatically set the address of each indoor unit.

[Means for Solving the Problems] An address setting device for an air conditioner according to the present invention has the features described in the claims.

[Operation] The random address generator generates a random numerical value when the power is turned on and thereafter every time it receives an instruction from the controller, and assumes that this numerical value is a temporary address of the air conditioner,
When it is confirmed by the transmitting circuit and the receiving circuit that the other air conditioner connected to the same remote controller does not have the same temporary address, the temporary address is finally stored in the address storage as the self address of the air conditioner. Let it. When the same temporary address is set in two or more air conditioners, the controller again generates a random numerical value in the random address generator. The above operation is repeated until all air conditioners can set different self addresses.

This eliminates the need for a conventional DIP switch for address setting, thereby eliminating errors in the address setting operation of the air conditioner.

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1, 2, and 3. FIG. FIG. 1 is a connection block diagram of a multi air conditioner in which a plurality of indoor units are connected to one remote controller, and shows an example in the case of three indoor units. FIG. 2 is a chart showing transitions up to address determination, and FIG. 3 is a flowchart of a process up to address determination.

First, FIG. 1 will be described. The remote controller 1 is serially connected to a plurality of indoor units 3, 4, and 5 via a connection wiring 2. The indoor unit 3 has a random address generator 3A, a controller 3B, and an address memory for generating a random numerical value.
3E, a transmission circuit 3C and a reception circuit 3D. The transmission circuit 3C and the reception circuit 3D constitute a full-duplex communication circuit having a function of simultaneously transmitting and receiving. The controller 3B is configured to be able to simultaneously transmit data transmitted via the transmission circuit 3C via the reception circuit 3D. The indoor units 4 and 5 have exactly the same configuration.

The random address generators 3A, 4A, and 5A generate random numbers when the power is turned on, and then generate new random numbers each time an instruction is received from the controller 3B, 4B, or 5B. . The maximum number of random numbers generated by the random address generators 3A, 4A, and 5A is several times the maximum number of indoor units that can be connected to outdoor units, thereby reducing the random address overlap rate. . In this embodiment, since up to 16 indoor units can be connected to the remote controller 1, the maximum value of the random numerical value generated by the random address generators 3A, 4A, 5A is set to 128, which is eight times as large.

Next, a process of determining an address of each indoor unit in the present embodiment will be described. As shown in FIG. 2, when the power is turned on,
It is assumed that the random address generator 3A has generated the numerical value 1, 4A has generated the numerical value 5, and 5A has generated the numerical value 1. The remote controller 1 transmits a numerical value from 1 to 128 as an address confirmation message signal many times in a short cycle. Indoor units 3 and 5
Sends a response message signal to the address confirmation message signal of numerical value 1 corresponding to the numerical value 1 generated by its own random address generator 3A, 5A, and the indoor unit 4 transmits its own random address generator 4A Generated number 5
A response message signal is transmitted in response to the address confirmation message signal having the numerical value 5 corresponding to. Since the indoor units 3 and 5 simultaneously transmit the response message signals, the reception circuit 3D of the indoor unit 3 overlaps the response message signal transmitted from the transmission circuit 3C with the response message signal transmitted from the transmission circuit 5C of the indoor unit 5. Therefore, the indoor unit 3 cannot correctly receive the response message signal transmitted from the transmission circuit 3C in the reception circuit 3D as it is, and cannot transmit it to the controller 3B. . Thus, the controller 3B knows that there is another indoor unit having the same address value as the address value 1 generated by the random address generator of its own indoor unit 3 at that time, and at that time. The controller 3B determines that it is impossible to use the address value “1” as the final self address of the indoor unit 3 itself, and the controller 3B causes the random address generator 3A to generate a new random value.

 The same operation as described above occurs in the indoor unit 5 as well.

On the other hand, in the indoor unit 4, since the numerical value 5 generated by the random address generator 4A does not simultaneously overlap with the numerical value generated by the random address generator of another indoor unit, the transmission circuit 4C is The transmitted response message signal is correctly received by the receiving circuit 4D and transmitted to the controller 4B,
Therefore, the controller 4B has the random address generator 4A at that time.
The random number generator 4A recognizes that the numerical value 5 generated by the random address generator 4A does not overlap with other indoor units, and stores the numerical value 5 generated by the random address generator 4A in the address storage unit 4E as the final self-address of the indoor unit 4. Let it. Thus, the final self address of the indoor unit 4 is set to "5".

In the air conditioners 3 and 5, the above operation is repeated until the new random numerical values generated in the respective random address generators 3A and 5A are different from each other. The units 3B and 5B store the numerical values generated by the random address generators 3A and 5A in the address storage units 3E and 5E, respectively, as final self addresses.

As a result, as shown in FIG. 2, for example, as shown in FIG. 2, the self-address 1 is set to the indoor unit 3, the self-address 5 is set to the indoor unit 4, and the self-address 3 is set to the indoor unit 5, respectively. The addresses are stored in the address storages 3E, 4E, and 5E, respectively.

With the above operation, different self addresses are automatically set in the indoor units 3, 4, and 5, respectively. Even if the number of indoor units further increases, each self-address can be automatically set in the same manner.

According to the present invention, an air conditioning system in which a plurality of air conditioners are connected to one remote controller (a multi-air conditioner system in which a plurality of indoor units are connected to one remote controller) Is included as a representative example)
Since the address setting can be automatically performed, the address setting operation can be easily and reliably performed without forgetting or making a mistake in the address setting.

[Brief description of the drawings]

FIG. 1 is a connection block diagram of one embodiment of the present invention, FIG. 2 is a diagram exemplifying an address transition until address determination, and FIG. 3 is a flowchart showing a process of address determination. 1: Remote controller 2: Connection wiring 3, 4, 5: Air conditioner (in the case of the figure, indoor unit) 3A, 4A, 5A: Random address generator 3B, 4B, 5B: Controller 3C, 4C, 5C: Transmission Circuit 3D, 4D, 5D… Receiving circuit 3E, 4E, 5E… Address memory

 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Takashi Kato 390 Muramatsu, Shimizu-shi, Shizuoka Pref. Inside Shimizu Plant, Hitachi Ltd. (72) Inventor Isamu Horiuchi 390 Muramatsu, Shimizu-shi, Shizuoka Shimizu Plant, Inc. (72) Inventor Kenji Togusa 390 Muramatsu, Shimizu-shi, Shizuoka Pref.

Claims (1)

(57) [Claims] 1. An address setting device for an air conditioner to which a plurality of indoor units are connected, wherein: a connection wiring for serially connecting the plurality of indoor units; A full-duplex communication circuit that is provided in the indoor unit and includes a transmission circuit and a reception circuit; and a signal that is also provided in the indoor unit and is received by the reception circuit. A controller that instructs the device to generate the numerical value; and an address storage device that stores the address, wherein the controller duplicates the address of the plurality of indoor units via the connection wiring. The generation of the numerical value is repeatedly instructed until no longer occurs, and finally, it is confirmed that the address of the indoor unit does not overlap, and the address is stored in the address storage. An address setting device for an air conditioner, comprising: