JPH0398324A - Data communication equipment - Google Patents

Abstract

PURPOSE:To always collect important information useful for maintenance monitor to a center even when a monitor control line cannot be installed by allowing a terminal equipment to always collect the information of a terminal equipment itself required for maintenance, and monitor and utilizing an idle satellite line so as to send the information in response to a call from the center. CONSTITUTION:A terminal equipment has a means 6 which collects and monitors the information of a terminal equipment itself required for the monitor at all times and edits and stores the information required for maintenance monitor, and a center 1 has a means 7 utilizing an idle satellite line to call a terminal equipment sequentially. Moreover, the terminal equipment 2 is provided with a means 8 sending the edited and stored information to the center 1 in response to the call from the center 1 and the center 1 is provided with the means 7 receiving a reply from the terminal equipment respectively. Thus, even when a monitor control line is not always prepared between the center 1 and the terminal equipment 2, the important information useful of maintenance and monitor is collected by the center.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a data communication device using a communication satellite device.

[Conventional technology]

Among those that provide communication lines between centers and terminals using communication satellites, the number of terminal devices is particularly small, and the satellite line is set up only when a call occurs, and there is no need for maintenance and monitoring between the center and terminal devices. In remote monitoring where a monitoring control line cannot be prepared at all times, it has conventionally been difficult to obtain a monitoring control line connecting this type of center and a terminal device. Therefore, as a method for detecting a malfunction of a terminal device, (a) the center calls the terminal device using an empty satellite link, and detects a terminal device that does not respond to the call. (b) No remote monitoring of the terminal equipment is performed, and when a call request occurs, an attempt to set up a satellite line becomes impossible and a faulty terminal is known.

The above methods were used to realize failure detection and maintenance monitoring of terminal devices.

[Problem to be solved by the invention]

In the above-mentioned conventional technology, the discovery of a malfunctioning terminal device is not sent, which may impede monitoring and pose a serious problem. In addition, there were also drawbacks such as the cause of failure being unknown and prediction unknown -1.

An object of the present invention is to enable the center to collect important information useful for maintenance and monitoring even when there are a large number of terminal devices and it is not possible to always draw a monitoring control line between the center and the terminal devices. measures to prevent failures based on
An object of the present invention is to provide a data communication device that can predict failure locations.

[Means to solve the problem]

In order to achieve the above purpose, the terminal device is provided with means for constantly collecting its own information necessary for maintenance monitoring, and for editing and storing information important for maintenance monitoring, and in response to a call from the center, The center includes means for sequentially calling terminal devices using an empty satellite line, and means for receiving responses from the terminal devices. It is something that

[Operation] The terminal device constantly monitors and collects its own information necessary for monitoring, and has means for editing and storing information necessary for maintenance monitoring, and the center uses the empty satellite link to sequentially collect information about the terminal device itself necessary for monitoring. Each terminal device has means for calling the terminal device, and the terminal device has means for sending the edited and stored information to the center in response to a call from the center, and the center has means for receiving a response from the terminal device. We are prepared.

As a result, even if a supervisory control line cannot always be drawn between the center and the terminal device, important information useful for maintenance and monitoring can be collected at the center.

〔Example〕

Next, one embodiment of the present invention will be described with reference to FIG. The third construction drawing is an explanatory diagram showing one embodiment of the data communication device of the present invention.

1 is a center, and 2 is one of a plurality of terminal devices. The terminal device 2 constantly monitors the operating status of each part of the terminal device 2 and the monitoring sensor 3, which can be used for maintenance monitoring of the terminal device 2 itself.
The information is collected by the acquisition circuit 4, and important information for maintenance monitoring is selected and transmitted to the circuit 6 where it is edited and stored as the sensor activation time 5.

On the other hand, the center 1 sequentially calls the terminals 2 using the empty satellite circuit, creates a supervisory control line 9 between the communication center circuit 7 and the communication terminal circuit 8, and connects the circuit 6 of the terminal 2. The maintenance monitoring information stored in the center is sucked up to the center. The center 1 displays and prints the maintenance monitoring information of the terminal device 2 which has been downloaded as described above on the display 10 and the printer 1, and notifies the center staff. The center staff can take necessary measures accordingly.

Thereby, even if there are a large number of terminal devices 2 and it is not possible to always draw a monitoring control line between the center 1 and the terminal devices 2, important information useful for monitoring and maintenance can be collected at the center 1. Therefore, it can be greatly utilized for countermeasures to prevent failures and for predicting failure locations.

〔Effect of the invention〕

As explained above, the present invention is capable of collecting important information useful for maintenance monitoring at a center even when there are a large number of terminal devices and a monitoring control line cannot always be drawn between the center and the terminal devices. Based on this information, it is very useful for taking countermeasures to prevent failures and predicting the location of failures when they occur.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing one embodiment of the present invention. 1... Center, 2... Terminal, 3... Monitoring sensor,
4... Intake circuit, 5. Sensor activation time, 6... Editing, storage circuit, 7... Communication center circuit, 8... Communication terminal circuit, 9... Monitoring control line, 10... Display, 1
1...Printing device. -6-

Claims (1)

[Claims] (1) In a data communication device using a satellite line, which consists of a single center and a plurality of terminal devices, and which enables communication by setting up a satellite line only when a call request for communication between the center and the terminal devices occurs, The terminal device constantly monitors and collects its own information necessary for monitoring, and has means for editing and storing information important for maintenance and monitoring, and in response to a call from the center, the edited and stored information The center has a means for sending a message to the center, and the center has a means for sequentially calling terminal devices using an empty satellite line, and a means for receiving a response from the terminal device. data communication equipment.