JPS60171340A - Central control device for air conditioner - Google Patents

Abstract

PURPOSE:To reduce mis-wiring generated upon connection and obtain the central control device excellent in handling convenience including properties of work and maintenance by providing transmission lines for connecting a remote controller for operation and the main body of the controller. CONSTITUTION:A plurality of remote controllers (a) for operating air conditioners, the main body (b) of central controller for controlling the remote controllers and the air conditioner (c) are provided and the remote controllers (a) and the main body (b) are connected by the transmission lines 3, 4, 19. The wireless device (d) of remote controller (a) side and the wireless device (e) of air conditioner (c) side are constituted of transmitors and receivers utilizing radio wave or light. A charge type electric source device 20 is the electric source circuit of the remote controllers (a) and the charging of battery 229 is effected when the remote controllers (a) are in signal receiving mode or the electric source, supplied from a voltage supplying terminal 100 of the main body (b) side, is impressed on the electric source circuit 20 through relay contacts 118 130. Accordingly, it is necessary only to work with the air conditioner (c) upon installation, exchanging work or maintenance of the air conditioner (c), the mis-wiring between the central controller may be eliminated, the battery is not necessitated to be exchanged and periodical inspection and maintenance may be facilitated.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a central control device that controls all of a plurality of air conditioners with at least one central control device.

Conventional configurations and their problems In recent years, as the number of devices controlled using microcomputers has increased, the era of new media, in which multiple controlled devices are controlled by a single centralized control device, is approaching. The trend is gaining momentum. This trend has also spread to households, and the use of centralized control devices for air conditioners has become more and more expensive.

The conventional centralized control device will be described below. In the conventional centralized control device, one control device is provided in a pair for each air conditioner, and each control device is provided with a control line.

Therefore, the number of control lines becomes very large, and as a result, the number of incorrect connections increases when connecting the control lines, and there are also many problems in terms of workability and maintainability of the control lines.Object of the InventionThe present invention solves the above drawbacks. In view of this, it is an object of the present invention to provide a centralized control device that reduces the number of control lines, reduces erroneous connections that occur during connection, and is more user-friendly in terms of ease of construction and maintenance.

Structure of the Invention In order to achieve this object, the central control device of the present invention comprises: a remote controller for operating the air conditioners, each having a remote controller of 1d11 for each of the plurality of air conditioners; and a main body of the central control device for controlling the plurality of air conditioners. , comprising a transmission line connecting the remote control for operating the plurality of air conditioners and the central control device main body, and the central control device main body performs operation/stop control of the plurality of air conditioners individually or in groups. , and is capable of supervising the operating status of the plurality of air conditioners and further setting the operating time. , the configuration is such that the power supply circuits of the remote controllers for operating the individual air conditioners can be backed up.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of a central control device according to an embodiment of the present invention.

In the figure, a indicates a remote controller for operating an air conditioner, b indicates a central control device Kimoto that controls a plurality of remote controllers a for operating an air conditioner, and C indicates an air conditioner. 1 is a central processing unit (hereinafter referred to as CPU 1), and 2 is a command signal transmission unit that connects a plurality of air conditioner operating remote controllers d and the main body of the central control device. 3,4° 19 is a transmission line that connects a plurality of air conditioner operating remote controllers and the main body of the central control device. 6
is a memory section consisting of program memory and data memory. Reference numeral 6 denotes an individual selection key switch input operation unit for individually controlling the operation and stopping of the air conditioners C. A plurality of key switches are arranged in order to correspond one-to-one to the plurality of air conditioners described above, and this individual selection key switch is provided. The on/off state of the key switch is read through the CPU 1, and a command to start/stop is transmitted to each air conditioner operating remote control a through the command signal transmission section 2. 7, multiple air conditioners C are controlled in the same manner for each group, at least the operation and
At the group collective key switch input operation section that controls the stop,
Key switches set in groups in advance are arranged in correspondence to multiple air conditioners C, and the ON/OFF status of the group key switches is controlled by commands for operation and stop E via the CPU 1 for each air conditioner. data is transmitted to remote control a. Reference numeral 8 denotes an automatic operation key switch input operation section that operates the air conditioner C for a set time, and similarly to the individual selection key switch input operation section 6, there are a plurality of key switches that should correspond one-to-one with the air conditioner C. The on/off state of the automatic operation key switch is read through the CPU 1, and the command is transmitted to each air conditioner operating remote control a through the command signal transmission section 2.

Reference numeral 9 denotes a time setting key switch operating section for setting the time to start and the time to stop the air conditioner C. 1o is a system clock which is provided independently of the CPU 1 and is a system time generator that supplies current time information to the CPU 1. Note that the time information from the hour 1 hour setting key switch is read via the CPU 1, and the system clock 1
The current time that occurred at o is displayed on the time setting key switch operation section 9.
The CPU 1 determines whether the out-of-operation hours of the air conditioner C set in the above are within the operation hours, and the operation/stop command is sent to each air conditioner operating remote control a via the command signal transmission section 2.
transmitted to. Reference numeral 11 denotes a display unit that monitors the operating status of each of the plurality of air conditioners C. When the air conditioner C is in operation, a display unit 11 displays an LED display unit corresponding to each air conditioner C on a one-to-one basis.
lights up, and if the LED is stopped, the CP is turned off.
Controlled by U1. 12 is a display unit that displays system time information. Reference numeral 13 denotes an operation signal transmission section of the remote control a for operating the air conditioner.

FIG. 2 shows a connection circuit diagram between the central control device and the air conditioner operating remote control in one embodiment of the present invention. Components that are the same as those in FIG. 1 are given the same numbers and their explanations will be omitted.

In the figure, 14 is a central processing unit (hereinafter referred to as CPU 14), and 15 is a controller for controlling a refrigeration cycle (not shown) consisting of a compressor, a blower, a four-way valve, a heat exchanger, etc. that constitute an air conditioner, and for controlling the above-mentioned air. Operating operation of the harmonizer 1 For example, switches and variable resistors (not shown) for setting operation modes such as cooling, heating, dry operation, and room temperature are collectively shown, and are connected to the CPU 14 and are The air conditioners are controlled by the controller main body b so that the corresponding air conditioners C are shared, for example, so that priority is given to post-operation control. Reference numeral 16 denotes an equipment number switch section provided to read the individual air conditioner numbers of the air conditioner operation remote control a, and is composed of at least one switch 17, which is connected to the CPU.
They are connected to 14 input terminals, respectively, and are controlled by the CPU 14vc so that each device number can be read by a combination of on/off states of a plurality of switches. Reference numeral 18 denotes a connection terminal, which is connected to the remote control a for operating the air conditioner and the main body of the central control device. d is a wireless device on the air conditioner operation remote control a side, e is a wireless device on the air conditioner C side, and is composed of a transmitter/receiver using radio waves or light. The wireless device d.

e is attached to the main body of the air conditioner C and a part of the remote control main body for operating the air conditioner, and radio wave or light detectors are installed so as to face each other. f is the refrigeration cycle (not shown). 2 shows a control unit that controls the air conditioner based on the control and commands from the air conditioner operating remote control.

100 is a reference voltage supply terminal, and 101 is a light emitting current limiting resistor, one end of which is connected to the reference voltage supply terminal ioo, and the other end connected to a contact 115 of a relay 113. 102 is an emitter resistor, and 103 is a noise removal capacitor, each of which is connected to a contact 116 of a relay 113. 10.
4,105° 106 is a resistor for generating a reference voltage and is connected in series, the connection point between resistor 104 and resistor 105 is connected to comparator 107, and the connection point between resistor 105 and resistor 106 is connected to comparator 10B. has been done. Note that the other end of the resistor 106 is grounded. 107°108 are comparators,
Each is connected to CPU1. 109 and 110 are light emitting current limiting resistors, one end of each of which is connected to a contact 119 of a relay 114. Reference numerals 111 and 112 are transistors, each having its base connected to the CPU 1.

Further, the collector of the transistor 111 is connected to the light emitting current limiting resistor 109K, and the collector of the transistor 112 is connected to the light emitting current limiting resistor 110. 113,11
4 represents a relay, and 115 to 120 represent contacts of the relays 113 and 114. 121 k'r relay 113, 114 C
A relay drive unit that controls based on commands from PU1,
Connected to PU1. 200 is a photocoupler, in which the light emitting element 201 and the light receiving element 202 are optically coupled; the anode of the light emitting element 201 is connected to the connection terminal 18;
The cathode of 1 is connected to the anode of diode 206. One terminal of the light receiving element 202 is connected to a reference voltage supply terminal 212, and the other terminal is connected to a comparator 217. 2
03 also optically couples the light emitting element 205 and the light receiving element 204 with a photocoupler, the anode of the light emitting element 205 is connected to the reference voltage supply terminal 212, the cathode of the light emitting element 205 is connected to the light emitting current limiting resistor 210, 211, and one end of the light receiving element 204 is connected to the reference voltage supply terminal 212. The anode of the diode 207 and the other end are connected to the connection terminal 18, respectively. 206 and 207 are diodes for preventing reverse breakdown voltage, and 208 and 209 are transistors.

The collectors of the transistors 208 and 209 are connected to the light emitting current limiting resistors 210 and 211, respectively, and the bases of the transistors 208 and 209 are connected to the CPU 14, respectively. 213 is an emitter resistance,
214 to 216 are resistors for generating a reference voltage; 21
7° 218 is a comparator, the contact between the resistors 214 and 215 is connected to the comparator 217, the contact between the resistors 216 and 216 is connected to the comparator 21, and the outputs of the comparators 217 and 218 are connected to the CPU1.
Connected to 4.

The wireless devices d and e are for controlling the air conditioner C with signals emitted from the central control device main body and the air conditioner operating remote control a, and for receiving signals emitted from the air conditioner wirelessly. It is a device. Wireless device d, e
is composed of a light emitting section and a light receiving section, and in one embodiment of the present invention, light emitting elements 220 and 225 serve as the light emitting section, and a driving section 219.2 that drives the light emitting elements 220 and 225.
The 26° light receiving section includes light receiving elements 222, 223. The light-emitting element 220 and the light-receiving element 223 are composed of signal amplification circuits 221 and 224 of the light-receiving elements 222 and 223, respectively.
The light emitting element 225 and the light receiving element 222 are optically coupled.

Signals are exchanged between the wireless devices d and e by the control unit f of the air conditioner C and the CP of the air conditioner operating remote control a.
This is done between U14s.

20 is a rechargeable power supply device, 229 is a rechargeable battery, for example;
Bypass diode 230, smoothing condenser 7 23
1. This is a power supply circuit for a remote control for operating an air conditioner, which is composed of a backflow prevention diode 227 and a charging resistor 228.

Charging of the rechargeable battery 229 is performed when the voltage of the rechargeable battery 229 drops; The power supplied from
This is done by applying it to o.

FIG. 3 is a diagram of each waveform of signal transmission in the central control device in one embodiment of the present invention. Figure 8 is a command signal waveform diagram.
lJ, ro4. It is a continuous signal encoded with TS, the TS part indicates the first code of the signal to be transmitted, and the TD part is a signal component sent following the first code TS, and is a code that changes depending on the information content to be transmitted. In the example, 1,1. Q,
An example is shown in which data is transmitted in the order of 0 and 1. The TQ section is a signal for delimiting IBiT, and in this embodiment, a signal of "1" is added and sent following the TD section. In other words, the command signal waveform diagram is T
In a form that combines the signal components of the S part, TD part, and TQ part,
An IBiT of data is formed, and a signal component of this type is then given as necessary to form a command signal. 2-B is a timing signal waveform diagram, which is transmitted in synchronization with the TD portion of the command signal waveform diagram. Figure-C is a signal waveform diagram propagating through the transmission line 4, Figure-D is the emitter resistor 2130.
Voltage waveform diagrams at both ends; FIG.

Next, its operation will be explained.

If you enter the operation command information into the main body of the central control device,
A command signal is supplied to the base of the transistor 112, and a constant voltage of 10 o VC is supplied to the reference voltage supply terminal 1, so that the current is 1: light emitting current limiting resistor 101, relay contact 1
15,117. Air conditioner 1 via connection terminal 18 and transmission wire 3! The light emitting element 201 in the operation signal transmitting section 13 on the side of the remote controller a, the diode 206 for preventing reverse breakdown voltage, and the relay contact in the command signal transmitting section 2 on the side of the central controller main body via the transmission line 4 again. 120,119
A light emitting current limiting resistor 110. flows to transistor 112; Current flows through the light emitting element 201 and the light emitting element 201
When the light is emitted, the light receiving element 202 becomes conductive, and a command signal is induced from the command signal transmission section 2 to both ends of the emitter resistor 213. Comparators 217 and 218 compare with the reference voltage,
r HICiHJ, r LOW J signal power CP
The program enters U14, and under the control of the CPU 14, one-by-one constant operation 2, for example, the operation of a compressor, is performed.

In addition, since the operation signal transmission sections 13 on the side of the air conditioner operating remote control a are connected in common, the type of information of the command signal sent from the command signal transmission section 2 on the central control device main body side is , it is assumed that at least the device number information of the air conditioner operating remote control a is inserted, and the CPU 14 on the side of the air conditioner operating remote control a decodes the device number information and compares it with the device number designation switch 16. and receives the signal sent from the command signal transmission section 2.
In other words, only the air conditioner operation remote control a called up by the CPU 1 on the side of the central control device sends an operation signal according to the contents of the command signal to the CPU 14. It is configured to emit sound and perform an action.

Next, for example, in relation to monitoring the operating state of the air conditioner C, the operation/stop status of the air conditioner C is determined by transmitting a signal sent from the operation signal transmission section 13 of the air conditioner operating remote controller a side to the main body of the central control device. The operation of receiving the command signal by the command signal transmitting section 2 on the receiving side will be explained.

The circuit configuration of the command signal transmission unit 2 includes a contact 117 and a running contact 116 . The relay drive unit 121, that is, the relays 113 and 114 is connected to C so that the contact 120 and the contact 118 are connected.
A command from the CPU 14 is supplied to the base of the transistor 209 in 1° increments controlled by the PU 1, and since a voltage is applied to the reference Ichikawa supply terminal J'-212, the current J,
The light passes through the light emitting element 206 and flows to the transistor 209 via the light emitting current limiting resistor 211.

The light-emitting element 205 emits light when current flows through it, conducts the light-receiving element 204, and the current flows through the J& connection terminal 18° transmission line 3, through the relay contacts 117 and 116, and into the emitter resistor 102. transistor 209
The actuation signal supplied to the 0 base induces the command signal -S.
．． r HIGHJ , r
The output of LOW J is displayed. CP'U 1
In response to the command from the CPIJ 14, the air conditioner C is controlled to know the operating state of the air conditioner C.

Effects of the Invention As described above, the centralized control device of the present invention can provide the following effects.

(1) Because the timing signal is superimposed on the command signal and operation signal component for signal transmission and reception between devices in the transmission signal component, complex processing is not required for signal transmission and reception, and the number of transmission lines is reduced. Good transmission and reception can be achieved with a small number of wires, and the circuit configuration is extremely simple.

(2) If the air conditioner and the remote controller for operating the air conditioner are configured to be wirelessly connected, as in this configuration, construction work is required when installing or replacing the air conditioner.

Maintenance work only needs to be done on the air conditioner, and there is no need to make incorrect connections with the central control device, which is very advantageous. Further, even if the model of the air conditioner is different, the configuration is such that the connection between the control unit of the air conditioner connected by the wireless device and the remote control for operating the air conditioner satisfies conditions for signal exchange to ensure smooth operation. (3) The air conditioner operating remote control can also be used as a portable wireless remote control by removing the connection to the central control device. In addition, the rechargeable power supply device included in the remote controller for operating the air conditioner is backed up from the main body of the central control device, so there is no need to replace the rechargeable battery of the rechargeable power supply device, and it is not necessary to replace the rechargeable battery on a regular basis. This has the effect of minimizing inspections, maintenance, etc.

[Brief explanation of the drawing]

Fig. 1 is a block wiring diagram of a central control device in an embodiment of the present invention, Fig. 2 is a connection circuit diagram between the central control device and the remote control for operating an air conditioner in the same device, and Fig. 3 is a circuit diagram of the connection between the central control device and the remote control for operating an air conditioner in the same device. FIG. 3.4.19 Transmission line, a. Remote control for air conditioner operation, b. Central control device body, C. Air conditioner, d, e. Wireless device, f. Air conditioner. Machine control unit, 20-...Rechargeable power supply device 1t0 Name of agent: Patent attorney Toshi Nakao and 1 other person +,, ^ ^
- 3 sounds (S group Mi

Claims (1)

[Claims] a plurality of air conditioners, a central control device that centrally controls the plurality of air conditioners, a remote control for operating the air conditioners that is individually connected to the plurality of air conditioners via a wireless device; and a transmission line connecting a central control device, the central control device at least controls the operation and stopping of the plurality of air conditioners individually or in groups, and monitors the operating state of the plurality of air conditioners. Furthermore, the operation time can be set, and the remote controllers for operating the air conditioners on each side are connected in a configuration that allows them to share and control the corresponding air conditioner, and the rechargeable power supply for the remote controller for operating the air conditioner is A central control device for air conditioners configured to supply power to the device.