JPS5829020B2 - information conversion device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an information conversion device equipped with an analog-to-digital converter, and more particularly to an information conversion device that performs scanning and transmits a plurality of pieces of data to a long distance.

For example, a conventional information conversion device used in an electric power system has a plurality of switches whose output sides are commonly connected for each phase or group, and data supplied from each group of switches provided in each group. Analog/digital (which converts analog quantities into digital quantities in parallel)
It had a converter (hereinafter referred to as AD) and a scanner that sequentially turns on the switches, that is, scans them.

The following will explain using the block diagram of FIG.

The data of the voltage value at point n in two phases is connected to the conductor wires 1a-1 to 1a-.
y1 and Ib-1 to 1b-n are each
-1 to l c-n and 1d-1 to 1d-n, forming two groups.

Each group is sequentially turned on or scanned by scanner 2, and each group receives data from each A.
D converter 3-1. and 3-2 in parallel.

The AD converters 3 - 1 and 3 - 2 convert the supplied analog value data into digital value data and supply it to the parallel-serial converter 4 .

The parallel-to-serial converter 4 converts the data from the AD converters 3-1 and 3-2 into serial signals, further converts them into transmission signals, and sends the signals to the transmission path 4a.

FIG. 2 shows the temporal arrangement of transmission signals on the transmission line 4a, that is, the transmission format.

The transmission signal is address AI corresponding to switches 1a1 and 1b-1, and data D corresponding to switch 1a-1.
Data Db corresponding to a1 and switch 1b-1
It has a structure in which 1 is one transmission unit and the following transmission units up to n transmission units are cyclically repeated, and this type of format is controlled by the scanner 2.

As described above, the conventional information conversion device uses a plurality of AD converters, so the structure of the device is complicated and it is difficult to reduce the price.

The present invention has been made to eliminate the drawbacks of the conventional devices as described above, and an object of the present invention is to provide an information conversion device that has a simple configuration and can easily achieve a reduction in price.

The information conversion device of the present invention consists of a plurality of groups corresponding to, for example, each phase of an electric power system, and from data corresponding to voltage values of n points, i (i=1, . . .
. . . is an information conversion device that scans the n)th data into a set, sequentially converts the analog quantity into digital quantity, and transmits the data, and outputs from a plurality of switches corresponding to each data. side are commonly connected, and the commonly connected switches sequentially supply analog data to an AD converter to convert the data into digital data, and the first data of each group is arranged in series. The plurality of switches are controlled by a scanner so as to obtain the same data.

The data converted into digital quantities is further subjected to parallel-to-serial conversion and transmission signal conversion, and then sent to a transmission path.

A monitoring station is connected to the other end of the transmission path to monitor the information conversion device of the present invention, which is incorporated into a remote monitoring and control device, for example, and receives the transmission signal.

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 3 shows a block diagram of the invention. In Figure 3,
Switches 1a-1 to 1a-n.

The output sides of 1b-1 to 1b-n are all connected in common via line 1c and to only one AD converter 3.

The switches 1a-1 to 1a-n are sequentially turned on one by one by a control signal from the scanner 5 indicated by a line 5a.

Similarly, switches 1b-1 to 1b-n are sequentially turned on one by one by a control signal indicated by line 5b.

The control signals on line 5a and line 5b are from switch 1a-1 to
Between 1 a-n and 1 b-11 b-n, the signals are output in a time-division manner so that they are turned on one by one.

The AD converter 3 has its input end connected to the line 1e, and its output end connected to the memories 6-1 and 6-2 via the line 3a.

Here, the memory 6-1 is synchronized with the control signal on the line 5a,
Data passing through switches 1a-1 to 1a-n is stored.

On the other hand, the memory 6-2 stores data passing through the switches 1b-1 to 1b-n in synchronization with the control signal on the line 5b.

The serial/parallel conversion circuit 4 has input ends connected to the memories 6-1 and 6-2 via lines 6a-1 and 6a-2, respectively, and
Further, since the output end is connected to the transmission line 4a, when data is alternately supplied from the memories 6-1 and 6-2, the data is converted into a serial transmission signal and sent to the transmission line 4a.

As already mentioned, the scanner 5 has switches 1a1 to 1a.
-n, 1 b -1 to l b-n, the control signals are supplied via lines 5a and 5b, and the memory 6 is supplied via line 4c from the serial/parallel conversion circuit 4.
A control signal is supplied that alternately operates -1 and 6-2.

Explain the operation.

When the serial-parallel converter 4 sends out the data Dbn as shown in FIG. 2, it outputs a control signal to the scanner 5 via the line 4b to start sending out the next scanning.

In response, the scanner 5 sends a control signal for scanning to the switch 1cm1 via the line 5a.

Switches 10-1 supply analog value data on line 1a-1 to AD converter 3 via line 1c.

As a result, the data on the line 1a-1 becomes digital value data, is output to the line 3a, and is stored in the memory 6-1.

Next, the scanner 5 sends a control signal to line 5b and sends a control signal to line 1b.
-1 line 1b-1 is turned on.

Thereby, the data on the line 1b-1 is supplied to the AD converter 3 via the line 1e, converted into a digital value, and then stored in the memory 6-2.

Such an operation will be described below with switches 1b-2 to 1b-n,
The processing is performed sequentially for 1d-2 to 1d-n, and the data is stored in the memories 6-1 and 6-2.

Thereafter, the data is read out alternately from the memories 6-1 and 6-2 again and sent to the serial/parallel converter 4 sequentially via the lines 6a-1 and 6b-1, and the data Da1 and Db1 are converted into transmission signals by adding the address A1. and sends it out to the transmission path 4a.

Thereafter, the process continues in the same manner up to address A n- and data Dan and Dbn, and a transmission format as shown in FIG. 2 is cyclically formed.

Note that in the above description, the data is divided into two groups and processed, but the data may be divided into a large number of groups.

Also, the scanning order for groups and switches is as follows:
Any order is possible without being limited to the order described above.

Furthermore, the memory may be one block rather than a plurality of blocks, and if the outputs of the parallel-to-serial converter are controlled to be sequentially written and sequentially read, a serial signal can be easily generated.

As described above, according to the present invention, since only one AD converter is required, the configuration of the device can be simplified, and the number of AD converters that require adjustment is reduced. This also has the effect of making maintenance easier.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a conventional information conversion device, FIG. 2 is a diagram showing a transmission format of the information conversion device, and FIG. 3 is a block diagram of an information conversion device according to an embodiment of the present invention. 1 a -1~1 a-n-1b-1~1 b-n...
...Switch, 2,5...Scanner, 3-
1.3-2゜3-3...AD converter, 4...
...Parallel-serial conversion circuit, 6-1. 6-2...
memory.

Claims (1)

[Claims] 1 Consisting of multiple groups, each of which consists of n arrays, each group's i (i=
1. In an information conversion device that scans the nth data as a set, converts the analog quantity into digital quantity, and transmits the data, the output side is shared in correspondence to each data. an analog-to-digital converter that sequentially converts the analog data supplied from the commonly connected switches into digital data, and the i-th data of each group in series. An information conversion device comprising: a scanner that controls the plurality of switches so that the data is arranged.