JPS62274841A - Catv repeater supervisory system - Google Patents

Abstract

PURPOSE:To improve a system by providing a function deciding the operating state in itself from a measured value measured by a repeater so as to send a text representing the result of decision only to a relay station and allowing a central supervisory station to collect the text in a short period. CONSTITUTION:A measured value 6 representing the operating state of a repeater is measured by a data processing section, the measured value is used and the operating state of the repeater is decided by the operating state deciding function 4 and the reslt is transferred to a section having a data transmission/ reception function 3. The data being the result of the repeater deciding its own operation state is formed into a text by the function 3 and sent to the central supervisory station as a test 2 being the result of decision. Thus, the length of text sent by each repeater to the central supervisory station is decreased and the time collecting the information representing the state of the repeater by the central supervisory station is decreased and a fault caused in the repeater is collected quickly to the central supervisory station.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a monitoring system for monitoring repeaters constituting a relay transmission path of a CATVll.

[Conventional technology]

FIG. 2 is a block diagram showing a conventional CATV repeater monitoring system. Central monitoring station 11 is CAT ■Relay transmission line 1
The repeaters 13 and 14 connected in cascade to 2 are monitored.

The central monitoring station 11 sends a message to one repeater [3] requesting the transmission of a measured quantity indicating the operating status of the repeater, but this is transmitted via the transmission line [2] and the data processing unit through the directional coupler 15. It is received at 19.

The data processing unit 19 also has a measurement function of measuring a measured quantity 20 indicating the operating state of the repeater, and when receiving a message requesting transmission of measurement data sent from the central monitoring station 11, It has a function of digitizing the measured quantity 20 and transmitting it in the upward direction through the directional coupler] 5 and the transmission line 12.

The central monitoring station 11 receives the repeater measurement data sent in the upstream direction, analyzes the content, and determines the operating state of the corresponding repeater.

In addition, the amplifier in the repeater 13] 6 and the directional coupler 17
The amplifier 18 has the function of transmitting the measurement data transmission request message sent from the central monitoring station] to the lower-order repeater 14, and the amplifier 18 has the function of transmitting the measurement data sent by the lower-order repeater 14 to the central monitoring station 11. .

[Problem that the invention seeks to solve]

In a conventional monitoring system that monitors two consecutive repeaters, each repeater sends the measured values within the repeater to the central monitoring station in accordance with the data transmission request message sent from the central monitoring station, and the central monitoring station The station collected these measured values and used them to determine the operating status of the repeater and detect failures, but as each repeater increases the number of measurement items, the message of the measurement data sent becomes longer. The drawback is that it takes time for the central monitoring station to collect measured values, and it takes time to detect the occurrence of a failure in the repeater.

The present invention adds a function to self-determine the operating state based on the measured values measured at each repeater, which enables the central monitoring station to send a telegram representing only the determination result to the central station and collect it in a short time. Thus, a monitoring system is constructed which is characterized by eliminating the drawbacks mentioned in 1.

[Means for solving problems]

In order to achieve the object stated in item 1, the present invention has a measurement function that measures a measured quantity without indicating the repeater operating state, a judgment function that determines the operating state of its own repeater from the measured value, and a transmission from a central monitoring station. A repeater that has a data processing unit with a data transmission/reception function that electronically encodes the judgment result of the own repeater and transmits it to the central monitoring station after receiving the data transmission request message sent by the repeater, and the repeater operates sequentially from these repeaters. A CATV monitoring system consisting of a central monitoring station that collects information indicating judgment results is configured.

[Embodiment] FIG. 1 is a block diagram showing the functions of a data processing section in a repeater according to the present invention. In the data processing section, first, a measurement quantity 6 indicating the operating state of the repeater is measured. Using this measured value, the operating state of the repeater is determined by the operating state determining function 4, and the result is transferred to the section having the data transmitting/receiving function 3.

In order to know the operating status of the corresponding repeater, the central monitoring station sends a data transmission request message 1 to the repeater requesting data indicating the operating status result, but this message is sent to the repeater's data processing unit. After being received and analyzed by the data transmitting/receiving function 3 of the repeater, the data resulting from the judgment of the repeater's own operating state is electronically encoded by the data transmitting/receiving function 3, and sent to the central monitoring station as a determination result telegram 2. sent to. The central monitoring station collects messages from each repeater that indicate only the determination results of the operating status of that repeater, and sends them to the CA.
Monitor the repeaters throughout TVw4.

〔Effect of the invention〕

As explained above, in the CATV repeater monitoring system according to the present invention, the repeater to be monitored measures a measurement quantity indicating its own operating state, determines its own operating state from the value, and transmits the result to the central By having the function to send to the monitoring station, the length of the message that each repeater sends to the central monitoring station is shortened, and the time for the central monitoring station to collect information without indicating the status of the repeater is shortened. This has the effect of improving the function of the monitoring system because any faults that occur at the central monitoring station are collected more quickly at the central monitoring station.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a data processing section in an embodiment of the present invention, and FIG. 2 is a block diagram of a conventional example. DESCRIPTION OF SYMBOLS 1... Data transmission request message, 2... Judgment result message, 3... Data transmission/reception function, 4... Operating state judgment function, 5... Measured quantity measurement function, 6... Measured quantity. =6-

Claims (1)

[Claims] The central monitoring station that outputs the data transmission request message, the relay transmission line that connects one end to this central monitoring station, and the measurement function that measures the measurement quantity that indicates the repeater operating status can be automatically calculated from the measurement results of this measurement function. A determination function that determines the operating state of the
and a data processing device having a data transmission/reception function that, when the data transmission request message is received via the relay transmission path, converts the judgment result by the judgment function into electronic form and transmits it to the central monitoring station via the relay transmission path. A CATV repeater monitoring system comprising: a plurality of repeaters each having a section.