JP2002335211A - Simultaneous command system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a master station to speedily collect confirm signals in the case of simultaneous command even when there are a large number of slave stations. SOLUTION: Slave station information for collecting confirm signals is transmitted while being superimposed on the simultaneous command (command contents) from the master station, and transmitted to the base station only by a slave station, to which the output of the confirm signal is requested.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a simultaneous command system for a wireless system.

[0002]

2. Description of the Related Art FIG. 1 is a block diagram showing the configuration of a radio system. 1 is a master station, 2-n (n = 1, 2,...) Are a plurality of slave stations, 3 is a master station line controller, 4 is a command board, 5-n
(N = 1, 2,...) Are a plurality of slave station line controllers, 6-n
(N = 1, 2,...) Are a plurality of receiving stands, and 7 is a wireless line.

FIG. 3 is a sequence diagram of a conventional simultaneous command system.
Shown in The signal indicating the simultaneous command and the content of the command are transmitted from the master station to the slave station in the following sequence. First, a start signal for starting the slave station is transmitted for a certain period of time. Next, the contents of the command are transmitted at a time corresponding to the amount. Finally, a termination signal for terminating the slave station is transmitted for a predetermined time.

[0004] A confirmation signal indicating the reception state of the slave station is always transmitted from the slave station to the master station at regular intervals. The acknowledgment signal is a signal indicating whether the instruction content is being received, is normally received, or is erroneously received at the timing of sending the acknowledgment signal.

[0005]

The above-mentioned prior art includes the following:
Since the confirmation signal is always transmitted at a constant interval, when the number of slave stations is large, there is a disadvantage that the time to collect confirmation signals of all the slave stations becomes longer.

SUMMARY OF THE INVENTION It is an object of the present invention to eliminate these drawbacks and to enable quick collection of confirmation signals even when the number of slave stations is large.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention is configured to superimpose and transmit slave station information for collecting a confirmation signal to a simultaneous command (command content) from a master station. It is. Then, only the slave station requested to output the confirmation signal is transmitted to the master station.

As a result, it is possible to shorten the interval of transmitting the confirmation signal of the slave station from which the confirmation signal is not collected by the master station.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a simultaneous command system according to one embodiment of the present invention will be described.

[0010] A block diagram showing the configuration of the wireless system is as follows.
It is the same as the prior art. FIG. 2 shows a sequence diagram of the simultaneous command system according to one embodiment of the present invention.

A signal indicating a simultaneous command and the contents of the command are transmitted from the master station to the slave station in the following sequence. At first,
A start signal for starting the slave station is transmitted for a certain period of time. next,
The contents of the command are transmitted at a time corresponding to the amount. Finally, a termination signal for terminating the slave station is transmitted for a predetermined time. The slave station information for collecting the confirmation signal is superimposed on the command content.

A confirmation signal indicating the reception state of the slave station is transmitted from the slave station to the master station under the following conditions. A slave station not included in the slave station information superimposed on the instruction content from the master station does not transmit the confirmation signal. The slave station included in the slave station information superimposed on the instruction content from the master station transmits a confirmation signal. Since there is a slave station that does not transmit the confirmation signal, the master station can quickly collect the confirmation signal.

[0013]

According to the present invention, confirmation signals can be quickly collected even when the number of slave stations is large.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a wireless system.

FIG. 2 is a sequence diagram showing a simultaneous command system as an example of the related art.

FIG. 3 is a sequence diagram showing a simultaneous command system according to an embodiment of the present invention.

[Explanation of symbols]

1: master station, 2-n: multiple slave stations, 3: master station line controller, 4: command board, 5-n: multiple slave station line controllers, 6
-N: a plurality of podiums, 7: wireless line.

Claims (1)

[Claims] 1. A master station and a plurality of slave stations are connected by a radio line,
In the simultaneous command method of a wireless system that executes a simultaneous command from the master station to the slave station, the master station superimposes and transmits slave station information for outputting a confirmation signal to the simultaneous command from the master station, and the slave station information includes the slave station information. A simultaneous command method in which only the slave station requested to output the confirmation signal is transmitted, and the interval for transmitting the confirmation signal of the slave station is shortened.