JPH05219578A - Telemeter transmission system - Google Patents

Abstract

PURPOSE:To select, fix, display and monitor one of plural kinds of information to be monitored. CONSTITUTION:Any desired channel (3-1-3-n) is deisgnated from a channel designation operating part 10. A channel switch control part 13 stops periodical channel switching signals transmitted to a channel switching part 4 and in place of those signals, select signals for selecting the channel designated from a master station are transmitted. The channel switching part 4 selects and fixes the channel designated by these select signals. Therefore, the master station can monitor information at real time by a data display part 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to telemeter transmission of a distant monitoring control device, and more particularly to a telemeter transmission system for displaying a specific channel in real time.

[0002]

2. Description of the Related Art A block diagram of a conventional telemeter transmission system is shown in FIG. A plurality of analog signals are input to the channel switching unit 4 of the slave station device 2, a switching signal for cyclically switching all channels from the channel switching control unit 13 is output to the channel switching unit 4, and the analog signals are sequentially switched. The A / D conversion unit 5 converts the data into digital data, and the data transmission unit 6 sends the digital data to the master station side device 1. The digital data received by the data receiving unit 7 of the master station side device 1 is stored in the data storage unit 8 for each channel and is displayed by the data display unit 9 for each channel.

[0003]

In this conventional telemeter transmission system, since data of all channels is transmitted at a constant cycle, when monitoring is performed by focusing on a specific channel,
It had the drawback that it could not be monitored in real time.

An object of the present invention is to provide a telemeter transmission system capable of fixing a specific channel and monitoring it in real time.

[0005]

A telemeter transmission system according to the present invention is a telemeter for connecting a master station and a slave station through a transmission line, receiving a plurality of monitored information which is connected to and accommodated in the slave station, and remotely monitoring the master station. In the transmission method, on the slave station side, a channel switching unit that selects one of a plurality of monitored information, and an A / D conversion unit that converts the monitored information selected by the channel switching unit into digital data. , The channel switching unit generates a control signal for cyclically selecting a plurality of monitored information, and at the same time, one of the plurality of monitored information is transmitted from the master station side.
A channel switching control unit for receiving the channel designation information for specifying one of the channel information and generating a selection control signal for designating the selection of the corresponding monitored information, and controlling the channel switching unit. A data storage unit for storing the digital data received from the side for each channel, a data display unit for displaying the stored data, and the channel for designating a desired one of the plurality of monitored information. A channel designation operation unit for transmitting designation information.

[0006]

The present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of the present invention.
When a specific channel is selected by the channel specifying operation unit 10 of the master station side device 1, a channel selecting signal corresponding to the specific channel is output from the channel specifying operation unit 10.
The channel selection signal is input to the channel designation data transmission unit 11, and its output is input to the channel designation data reception unit 12 of the slave station side device 2 via the transmission line 14-2.

When the output of the channel designation data receiving unit 12 is input to the channel switching control unit 13, the cyclic switching signal output of the channel switching control unit 13 is stopped and the channel switching signal corresponding to the channel selection signal is switched to the channel switching signal. Output to section 4. Any one of the analog signals 3-1, 3-2 to 3n of the specific channel selected by the channel switching unit 4 is converted into digital data by the A / D conversion unit 5 and output to the data transmission unit 6. It The output from the data transmitting unit 6 is input to the data receiving unit 7 of the master station side device 1 via the transmission path 14-1.

The output data from the data receiving section 7 is stored in the designated channel in the data storage section 8, and the output is displayed at the designated location in the data display section 9.

[0009]

As described above, according to the present invention, even in the telemeter transmission in which a plurality of telemeter channels are always transmitted cyclically, a specific channel can be specified by designating a specific channel from the master station side device. It has an effect that it can be displayed in real time.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a telemeter transmission system of the present invention.

FIG. 2 is a block diagram showing an example of a conventional telemeter transmission system.

[Explanation of symbols]

 1 Master station side device 2 Slave station side device 3-1, 3-2, 3-n Analog signal 4 Channel switching unit 5 A / D conversion unit 6 Data transmission unit 7 Data reception unit 8 Data storage unit 9 Data display unit 10 Channel designation operation unit 11 Channel designation data transmission unit 12 Channel designation data reception unit 13 Channel switching control unit 14, 14-1, 14-2 Transmission path

Claims (1)

[Claims] 1. In a telemeter transmission system in which a master station and a slave station are connected by a transmission line, a plurality of monitored information which is connected to and accommodates in the slave station is received, and remote monitoring is performed from the master station, a plurality of slave stations are connected to the slave station side. A channel switching unit that selects one of the monitoring information, an A / D conversion unit that converts the monitored information selected by the channel switching unit into digital data, and the channel switching unit converts a plurality of monitored information. A control signal for cyclically selecting in sequence is generated, and channel designation information for specifying one of the plurality of monitored information is received from the master station side to select corresponding monitored information. A data storage unit that includes a channel switching control unit that generates a designated selection control signal and controls the channel switching unit, and that stores data for each channel of the digital data received from the slave station on the master station side, The displayed data A telemeter transmission system, comprising: a data display section for transmitting the channel designation information for designating a desired one of the plurality of monitored information;