JP2994773B2 - How to set the address of the air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner in which a plurality of use side units are connected to one heat source side unit.
The present invention relates to automatic setting of a unique address of each unit used when a control signal is transmitted and received between a heat source side unit and these utilization side units.

[0002]

2. Description of the Related Art A conventional method of automatically setting an address in such an air conditioner is disclosed in Japanese Patent Application Laid-Open No. 60-165.
No. 452 was disclosed. In the device described in this publication, the address of each unit is set by address setting means such as a switch.

[0003]

When the address is set by the address setting means such as a switch, it is necessary to set the address at the time of installing the air conditioner. If an error was made (duplicate address setting), a trouble would occur when the air conditioner was started.

[0004] In order to solve such a problem, the address setting method of the present invention solves the trouble caused by the artificial address setting by automatically setting the address when the air conditioner is installed.

[0005]

According to the method of automatically setting an address of an air conditioner of the present invention, one parent-use unit in which a remote controller for operation control is connected to one heat-source-side unit, and this parent-use unit. In an air conditioner connected so that a plurality of child use-side units that are operation-controlled by the remote controller via use-side units can transmit and receive signals via each other's signal lines using respective unique addresses, When setting the addresses of the parent use side unit and a plurality of child use side units, first set the address of the parent use side unit to a predetermined address A, and set the address A from the parent use side unit as the source address. After outputting the address setting signal, each child use side unit outputs a signal of a request for setting the source address to the heat source side unit, and outputs the signal to the heat source side unit. In response to this address setting request signal, the unit outputs an address setting signal with an unused address as a destination address, and the user unit that outputs the address setting request signal outputs this address setting signal to the address setting request signal. When the address is received within a predetermined time from the output, the destination address of the address setting signal is stored as the unique address of the use side unit. Each of the user-side units includes a signal output control unit that outputs a signal again after a delay time determined at random when signals output from the respective units overlap.

[0006]

By supplying power, the addresses of the parent and child use side units are determined in the following order. First,
An address setting signal of a predetermined address A set by one parent use side unit connected to the operation control remote controller is output to the heat source side unit and the child use side unit. Next, the child use side unit outputs a signal of a request for setting a transmission source address to the heat source side unit.
After that, the heat source side unit outputs an unused address setting signal to the child use side unit in response to the address setting request signal. The child use side unit stores the destination address of the address setting signal as a unique address of the use side unit when the child use side unit receives the setting request signal within a predetermined time from the time of outputting the setting request signal. If the signals output from the respective child use side units overlap in the above, a signal output control unit that outputs the signal again after a delay time determined at random is provided.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 3 is an electrical wiring diagram showing a state in which the heat source side unit and the use side unit of the air conditioner of the present invention are connected by a signal line. In this figure, 1 is a heat source side unit, 2 to 5
Is a use side unit, and the use side units 2 to 5 are installed in the same room or in different rooms.

Reference numerals 7 and 8 denote signal lines, and the heat source side unit 1
And the user-side units 2 to 5 are connected so that signals can be transmitted and received between them. Therefore, the signals output by any of the units can be received by all the units.

Reference numeral 6 denotes a remote controller, which is connected to the user-side unit 2, signal lines 9, 10 and power line 11. Therefore, it is the use side unit 2 (parent use side unit) that is directly controlled by the remote controller 6, and the other use side units (child use side units) receive signals from the use side unit 2. It controls the setting of the cooling / heating mode and the temperature set value, and also controls ON / OFF of the operation.

FIG. 1 is a flow chart showing a main part of an address setting operation of a microprocessor which controls a use side unit (which may be any use side unit). First, in step S1, power supply is started, and a power-on reset is performed on the microprocessor. Next, in step S2, initialization of the microprocessor, that is, initialization of each constant is performed. For example, the operation of the air conditioner is stopped, the cooling operation mode is set, and the clock is set to 1
It is 2:00.

Next, in step S3, it is determined whether or not the heat source side unit has been activated. That is, it is determined whether or not the initialization of the microprocessor for controlling the heat source side unit has been completed and the microprocessor is in an operating state. This determination is made based on whether or not there is a response to the signal output from the user-side unit.

In step S4, it is determined whether or not this use side unit is a parent use side unit. This determination can be made based on whether a remote controller is connected or whether a centralized controller is connected.

When the parent use side unit is determined in step S4, the process proceeds to step S5. In step S5, a delay time T0 (approximately 20 mm seconds) is set, the operation is stopped until this time elapses, and after elapse of this time, the process proceeds to steps S6 and S61 to output an address registration signal to the signal lines 7 and 8. The address registration signal includes, for example, a destination address (DA) = 1F (address for all units), a source address (SA) = 00 (a unique address used by the parent use side unit), and a command (C) = 56. (Command indicating address setting control). Data (D) is data indicating the current state of the air conditioner (capacity of the heat exchanger, operating state, A / D
Heat exchanger temperature or room temperature detected by the conversion).

In accordance with the transmission of the signal, a collision of the signal is determined in step S7. That is, it is determined whether another user-side unit or a heat-source-side unit is transmitting signals at the same time. When signals collide, the transmission signal changes. The collision of the signals can be performed by simultaneously receiving the signals on the signal lines 7 and 8 when outputting the signals, and determining whether or not the received signal and the output signal match. If a signal collision occurs, the process returns to step S5, and after a predetermined delay time (T0), the signal is retransmitted by repeating the above steps.

This operation is performed until it is determined in step S8 that the signal transmission is completed. When the transmission of the signal is completed, the address "00" is stored in the storage location ADD, and the process proceeds to step S9. In step S9, it is determined whether or not the unique address set in this way overlaps with another use side unit. This determination can be made based on whether or not the signal transmitted by the other user side unit matches the unique address stored in the storage location ADD. If the addresses match, it is determined that the addresses are duplicated, the value of ADD is cleared in step S10, and an address setting request is made to the heat source side unit again. When a signal indicating the end of address setting output from the heat source side unit is input, the process proceeds to step S11 to end address setting and start normal operation.

Next, when the parent use side unit is not determined in step S4 (when the child use side unit is determined), the process proceeds to step S12 to set the delay time T. This delay time is the sum of the time based on the value initially obtained from the A / D conversion for temperature detection and the basic time. Therefore, different values are set according to the conditions for each user-side unit.

In step S13, the process stands by until the time T elapses. That is, the timer measures the delay time T to determine whether the time has elapsed.

When the delay time T has elapsed, step S14,
Proceed to step S15 to send the address setting signal to the signal lines 7 and 8.
Output to The address setting signal includes, for example, a destination address (DA) = 10 (a unique address of the heat source side unit is fixed to 10), and a source address (SA).
= 1B (1B indicates address undecided), command (C)
= 56 (command indicating address setting control). The data (D) is data indicating the current state of the air conditioner (heat exchanger capacity, operation state, heat exchanger temperature detected by A / D conversion, room temperature, etc.).

With the transmission of this signal, step S16
Is used to determine signal collision. The determination of the signal collision is the same operation as that in step S7 described above, and a description thereof will be omitted.
If a signal collision occurs, the process returns to step S12 via step S4, and after a predetermined delay time, the signal is transmitted again by repeating the above steps.

This operation is performed until it is determined in step S17 that the signal transmission has been completed. Next, when the transmission of the signal is completed, it is determined in step S18 and step S19 whether or not the signal is received during the predetermined time S. If the signal is not received, the process returns to step S12 via step S4 and returns to step S12 again. Perform the steps. Note that the predetermined time S is determined in step S
It is timed by a nineteen timer.

When the signal is received, the process proceeds to step S20,
It is determined whether the received signal satisfies SA = 10 and C = 64.

When the condition of step S20 is satisfied, the value of DA of the signal received in step S18 is stored in the storage location ADD as a unique address. Next, in step S22, setting of DA = 10, SA = ADD, and C = 56 is performed.

This signal is output in steps S23 to S27. The signal output procedure is the same as the above-described procedure, and a description thereof is omitted.

When the transmission of the signal is completed, the process proceeds to step S9, where the address duplication is determined in the same manner as described above, and then the normal operation is started.

FIG. 2 is a flowchart showing the main operation related to the address setting of the microprocessor for controlling the operation of the heat source side unit. In this flowchart, power supply is started in step S31, and a power-on reset is performed on the microprocessor.

Next, in step S32, initialization of the microprocessor, that is, initialization of each constant is performed. For example, compressor (OFF), fan motor (OF
F), the four-way valve is initialized to the cooling state (OFF).
In this initialization, a set value of a switch for setting the number of connected units on the user side is input at the same time. When the address setting of the user side unit has been performed for the number set in this switch, the end of the address setting is determined.

Next, in step S33, it is determined whether or not the use side unit has been activated. That is, it is determined whether or not the initialization of the microprocessor for controlling the use side unit has been completed and the microprocessor is in the operating state. This determination is made based on whether or not the number of replies to the signal output from the user side unit has reached the switch set value input at the time of initialization.

When the activation of the user-side unit is confirmed in step S33, the process proceeds to step S34. In this step, it is determined whether the heat source side unit has received a signal,
When the signal has been received, the process proceeds to step S35.

In step S35, it is determined whether the command (C) of the received signal is 56, and when C = 56 is satisfied, the address setting operation is started.

SA = 0 of the signal received in step S36
If 0 and DA = 1F are satisfied, step S4
Proceed to 2 to register the source address (SA) of this signal in the storage unit as a registered address.

In step S43, it is determined whether or not such address setting operation has been completed for the number of use side units set by the switches. When the address setting for the set number has been completed, the process proceeds to step S44.

In step S44, a signal indicating the end of the address setting is output to all the use side units, and then the operation shifts to the normal operation.

SA = 1 of the signal received in step S37
B, if DA = 10 is satisfied, step S3
Steps 9 to S41 are performed. In step S39, an address given to the user side unit is selected and stored in ADD. This address selection is given sequentially from the addresses that have not been used yet. For example, 01, 02, 03, ~
This is the address up to the value set by the switch. (Note that the address "00" is an address given to the parent use side unit and is not selected in this step.) In steps S40 and S41, the values of DA, SA, and C are set and this signal is output.

Next, the SA of the signal received in step S34
= ADD, DA = 10, that is, when the destination address of the signal previously set and transmitted in steps S39 to S41 matches the source address of the currently received signal, the process proceeds to step S42. The source address (SA) of this signal is registered in the storage unit as a registered address.

After the address is registered, the normal operation is performed through steps S43 and S44 in the same manner as described above.

FIG. 4 is a time chart when the address of the user-side unit is automatically set using the flowcharts shown in FIGS. In this time chart, the address (AD) of the heat source side unit is fixed, and the address of the use side unit is arbitrarily assigned 00 to 03. Therefore, the unit of address AD = 00 to 03 corresponds to any use side unit. Is unknown at the time of address establishment. In addition, as a method of knowing the assigned address, it is possible to know by providing a display unit in the use side unit, and the parent use side unit can be known from the display unit of the connected remote controller. It is also possible to know by operating the remote controller the intermittent operation of the blower of the child use side unit of the desired address.

First, when the activation of the heat source side unit and the utilization side unit is confirmed, each utilization side unit outputs a signal representing an address setting to a signal line after a delay time determined at random. In the time chart of FIG. 4, the delay time (T
0 to T3) is determined to satisfy the relationship of T0 <T1 <T2 <T3. T0 is the time measured in step S5.

When the delay time T0 has elapsed, the parent use side unit outputs an address registration signal composed of "1F0056" to the signal lines 7 and 8. At this time, since the heat source side unit is in the signal receivable state, it receives the signals output to the signal lines 7 and 8. The heat-source-side unit registers the source address (SA) of the address registration signal, and enters the receivable state again.

When the delay time T1 has elapsed, the child use side unit outputs an address setting request signal composed of "101B56" to the signal lines 7 and 8. At this time, since the heat source side unit is in the signal receivable state, it receives the signals output to the signal lines 7 and 8. The heat source side unit selects an address based on the received signal. At this time, since the address of any child use side unit has not been set yet, the smallest value “01” is selected as the set address.
When an address is selected, the heat source side unit outputs an address setting signal using the selected address as a destination address to the signal lines 7 and 8.

After outputting the signal "101B56", the child use side unit is in a standby state for signal reception for a predetermined time (S) after outputting this signal. When receiving a signal output from the heat source side unit to the signal line during the standby state, the child use side unit registers a destination address of the received signal as a unique address of its own unit, and registers this address as a source address. The signal "10015
6 "is output to the signal line.

The heat source side unit receives a signal using the address selected and set as the destination address as the source address via a signal line, and confirms that the selected and set address is set as the address of the use side unit, It shifts to a signal reception standby state in preparation for the next address setting.

It should be noted that the child-use-side unit to which the address has been set determines whether or not address duplication occurs until a signal indicating the end of the address setting is received. If an address duplication occurs, the own address is cleared and an address setting request is made to the heat source side unit again. The case where this address duplication occurs is, for example, a case where the heat source side unit cannot receive the signal output by the child use side unit and the address is specified twice.

Next, after the delay time (T2), another child use side unit outputs an address setting request signal "101B56" to the signal lines 7 and 8, and the same address setting as described above is performed. At this time, since the child use side units "00" and "01" are already registered in the heat source side unit, the next address "02" is given to the address of the child use side unit which has output this signal.

In the same manner, the addresses of the child use side units are set to "03", and the address setting of all the use side units is completed (the number of use side units set in the switch and the use side which has registered the address). When the number of units matches, the end of the address setting is determined), and a signal indicating the end of the address setting is output to signal lines 7 and 8 to shift to normal operation.

The delay times T0 to T3 are set at intervals (about 20 mm seconds) at which the above-described series of address setting processes can be completed.

[0046]

When the air conditioner thus configured is used, when the heat source side unit and the use side unit are activated, first, the address of the parent use side unit is determined, and then the delay time of the randomly set delay time is determined. Thereafter, an address setting signal is output from each of the child use side units to the heat source side unit, and an address selection setting is performed from the heat source side unit. Therefore, the address setting of the child use side unit is performed in ascending order of the delay time. It is done automatically.

Therefore, even when there are three or more child use side units, the addresses of the use side units are individually set by connecting the signal lines and supplying power to each unit without individually setting addresses. It can be set automatically. As a result, even if there are three or more child use side units, address duplication is eliminated, so that the installation time of the air conditioner can be reduced and abnormal operation of the air conditioner can be prevented.

[Brief description of the drawings]

FIG. 1 is a flowchart showing a main operation relating to address setting of a microprocessor for controlling a use side unit using the present invention.

FIG. 2 is a flowchart illustrating a main operation related to address setting of a microprocessor that controls a heat source side unit using the present invention.

FIG. 3 is a schematic diagram showing a connection relationship of the air conditioner of the present invention.

FIG. 4 is a time chart showing an address setting process of a heat source side unit and a use side unit using the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 heat source side unit 2 user side unit 3 user side unit 4 user side unit 5 user side unit 6 remote controller 7 signal line 8 signal line 9 power line 10 power line 11 signal line 12 signal line

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kazuyoshi Suwa 2--18 Keihanhondori, Moriguchi-shi Sanyo Electric Co., Ltd. (72) Inventor Masayuki Kumakura 2--18 Keihanhondori, Moriguchi-shi Sanyo Electric Co., Ltd. (56) References JP-A-2-4154 (JP, A) JP-A-1-91832 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) F24F 11/02 103

Claims (2)

(57) [Claims] 1. A heat control unit is provided with an operation control resource.
A remote controller connected to a remote controller and the remote control
In an air conditioner connected so that a plurality of child-use units that are operation-controlled by rollers can send and receive signals via each other's signal lines using respective unique addresses, the parent use-side unit and the plurality of Child use side uni
When setting the address of the packet, first, the address of the parent use side unit is set to a predetermined address A, and after outputting the address setting signal having the address A as the source address from the parent use side unit, The user-side unit outputs a signal of a source address setting request to the heat source-side unit,
The heat source unit outputs an address setting signal with an unused address as a destination address in response to the address setting request signal, and the utilization unit that outputs the address setting request signal sets the address setting signal to the address setting signal. When the request signal is received within a predetermined time from when it was output,
An address setting method for an air conditioner, wherein a destination address of the address setting signal is stored as a unique address of the use side unit. 2. The system according to claim 1, wherein each of the user-side units includes a signal output control unit for outputting a signal again after a delay time determined at random when signals output from the respective units overlap each other. 3. The address setting method for an air conditioner according to item 1.