JPH02171048A - Communication control equipment - Google Patents

Abstract

PURPOSE:To prevent a data transmission error by providing a means sending a signal forming a data continuously for a prescribed number of times only and a means receiving a sent signal and reproducing the data when the signal of the same value has a prescribed ratio or above. CONSTITUTION:A data composed in the form of a transmission signal with an indoor circuit control means 1 in an indoor equipment 9 is subjected to a serial processing by an indoor data transmission means 2 and sent outdoor. Then the sent data is received by the outdoor data reception means 3 of an outdoor equipment 10 and a reception data decision means 4 by majority decision confirms the received data. Then the received data is sent to an outdoor circuit control means 5 and used as a control data for a compressor or the like. In this case, the signal forming the data is sent consecutively for the prescribed number of times and the sent signal is received and when the signals of the same value in the plural signals shares a prescribed rate or above, the data is reproduced as the received signal. Thus, correct data reception is attained and the operation reliability is improved.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention is directed to communication control of a control device, etc., which can reduce data reception errors of serial signals between an indoor unit and an outdoor unit of a separate type air conditioner. It is related to the device.

[Conventional technology]

FIG. 5 is a block diagram showing a conventional air conditioner control device disclosed in, for example, Japanese Patent Laid-Open No. 59-464311.

In the figure, (5) is an indoor control circuit, inside which is an indoor control section (5), a synchronization signal generation circuit (52).

A thyristor ignition circuit (53) is connected, and a room temperature thermistor (5) is connected to the indoor control unit (53).

A transmitting element (55) in the thyristor firing circuit (53) receives a serial signal ff! fi (56). The outdoor control circuit (58) includes an outdoor control section (6).

The synchronizing signal generating circuit (6) and the light receiving element (62) are unexpectedly connected to the control unit (6).The compressor (63) is also connected to the electric power (57).

Next, the operation will be explained.

First, turn on the indoor power to start operation. Guidance control unit (54) connected to room temperature thermistor (54)
) to input the room temperature, and convert the control signal of the compressor (6) into serial data.

It is sent to the thyristor ignition circuit (53). The serial signal is
The transmitting element (55) performs k switching and is sent from the serial signal H (, 56) to the outdoor control circuit (58).

The serial signal passes through the light receiving element (62) and is sent to the outdoor control unit (
60) Perform signal analysis from K and install compressor (6
3) 0N10FF control money.

[Problem to be solved by the invention]

Conventional air conditioner communication decoration #i is configured as described above, so control data is only transmitted from indoors to outdoors, and 1.00 error in data judgment due to single noise etc. If this occurs, the outdoor control unit (6) operates using this incorrect data.In other words, there is a problem in that it is prone to malfunction.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a communication control device that can perform transmission without errors.

[Means to solve the problem]

The communication decoration f according to the present invention is capable of continuously transmitting a signal constituting data a predetermined number of times. Alternatively, when a signal that has been sent consecutively a predetermined number of times is received, and the number of signals with the same value among these multiple signals exceeds a predetermined ratio, this data is used as the value of the received signal. [Function] The communication control device of the present invention is capable of transmitting the signals that make up all the data several times, and even if noise or the like gets mixed in during the communication, it is possible to transmit the same signal multiple times. Since only a portion of the signal is interfered with, the transmitted signal can be correctly reproduced from the remaining values.

〔Example〕

Hereinafter, the completeness (2) of this invention will be explained.

The first figure is an overall configuration diagram of the present invention.

In the figure, (9) is an indoor unit, and ul is an outdoor unit.

The data assembled into a transmission signal format by the indoor circuit control means (9) of the indoor unit (9) is converted into a serial signal by the indoor data transmission means (2) and sent to the outside. Outdoor data receiving means (31
received data by majority vote (4).
) to confirm the received data. The received data is sent to the outdoor circuit control means (51) and is used as data for controlling the compressor, etc.

FIG. 2 is a block circuit diagram of the present invention.

r2Il is a microcomputer for indoor control.

A switch input matrix circuit i8) is connected to this. In addition, an electric power source is supplied to these devices by the indoor power supply circuit O. Indoor microcomputer c! 11Vc
The compressor ring and the power relay for the outdoor power circuit @ are connected.

The serial signal to the outside is sent to the indoor serial signal input/output circuit c! 41 and is output. Power source is inverter circuit c
19 to the compressor ω. It is also connected to an outdoor power supply circuit (2) for supplying power to the outdoor microcomputer. The serial signal from the room is input to the input port of the outdoor microcomputer through the outdoor serial signal input/output circuit @.

Next, the operation of one embodiment of the present invention will be explained based on a flowchart.

Figure 3 shows how the signals that make up the data are divided into words.
It is a flowchart of the reception operation of the indoor and outdoor microcomputers when the word is further divided into bits and each bit is sent three times in succession, that is, when the redundant bit is 2.

When the program starts, first all data for one pin is received at 01). Next, in (to), it is determined whether the received data is 1 or O. If it is 1, increment the 1 count counter.

Then, use the circle to determine whether this counter is 2 or more, and if so, use the circle to determine that the received data is 1. Since the data has already been determined, if there are any redundant bits, they are skipped. Next, use hu to check whether the data for one focus has been read, and if it has not.

Return to data reception of 011. Also, 1 is the unit of transmission and reception.
It also checks whether the word has been read, and if it has not, it returns to 6υ data reception. Once finished, execution moves to the next control routine.

After receiving the 1-bit data of 3υ, even if it is 0 in the data judgment of □, the color/number that is incremented is O.
It is the same as when it is 1, except that it is a counter for the number of times. Note that these discrimination routes pass through either the 1 judgment or the O judgment at least twice.

FIG. 4 is a configuration diagram of transmission data.

The transmission data is asynchronous serial data. The data consists of a total of 8 bits: a 1-bit start pit that is always 0, 6 pits of data, and a 1-bit stop pit that is always 1.

Furthermore, since 2 redundant bits are added to each data bit, the actual data bit length is 20 bits.

Based on the fourth factor, a method for determining data at the fourth bit from the beginning of the data bits will be specifically described.

First, the first bit of this pit is 1. Noise is added to the 2nd bit, and even if it is determined to be 0, the 3rd bit is 1, so there are 2 1s and 1 O.
The data of this pit is determined to be 1 by majority vote.

Note that in the above embodiment, the number of times the same data is transmitted is three times, but the number of times may be any number of times as long as it is multiple times. However, if there are many errors, the data transfer time will become long.

Further, in the above embodiment, the determination as to whether the value is 0 or 1 is made by majority vote (50% or more).

A predetermined ratio may be used as the criterion.

Further, in the above embodiment, one bit is used as a transmission unit and is transmitted multiple times, but the transmission unit does not have to be one pit, and may be a plurality of bits or other units.

Furthermore, although the above embodiments have shown the case of serial data transmission, parallel data transmission may also be used. For example, when signals can be sent to eight signal lines simultaneously, eight bits can be transmitted in parallel at the same time, and this transmission may be performed several times in succession to obtain a value that is 2% higher than the received data value.

Further, although the above embodiments have been described in the case of a communication control device for an air conditioner, the communication control device for other devices may be used.

The two communication control devices mentioned above do not need to have both transmission and reception functions, and may have only transmission and reception functions.

[Effects of the Invention] As described above, according to the present invention, it is possible to determine whether or not data has been received correctly, and it is possible to
without requesting data retransmission.

Since it becomes possible to receive correct data, the reliability of operation becomes the same as above.

In addition, in the case of a model having one communication signal line, there is an advantage that there is no increase in cost since all of these are implemented by a microcomputer program.

[Brief explanation of the drawing]

FIG. 1 is an overall configuration diagram of the present invention. The second prisoner is a block diagram of the present invention. FIG. 3 is a program flowchart for receiving data for an indoor/outdoor unit, showing an embodiment of the present invention. FIG. 4 is a configuration diagram of transmitted and received data showing an embodiment of the present invention. FIG. 5 is a block diagram of a conventional communication control device. (11... Indoor circuit control means. (21... Indoor data transmission means. (3)... Outdoor data reception means. +41... Data determination means. 15)... Outdoor circuit control means. 6)... Outdoor data transmitting means. (71... Indoor data receiving means. (8)... Data determining means. Qt... Microcomputer for indoor control. ■... Matrix circuit for switch input. Ω...Indoor source circuit. CI heart...Indoor serial signal input/output circuit. Mutter...Power relay (to)...Outdoor serial signal input/output circuit. ■...Outdoor FF111 dual-use microcomputer. (2)...Outdoor source circuit. ■...Innovator times +16° Diagram

Claims (1)

[Claims] A communication control device having at least one of the following means: (a) means for continuously transmitting a predetermined number of signals when transmitting a signal constituting data; (b) means for transmitting a predetermined number of signals in succession; When a plurality of signals transmitted by means are received and the number of signals having the same value among these plurality of signals is equal to or greater than a predetermined ratio, the value of this signal is set as the value of the received signal and the data is reproduced. means to do.