JPS603001A - Input data processor - Google Patents

Abstract

PURPOSE:To obtain a data processor which decides on which signal is normal automatically when input data is abnormal and supplies the normal signal to a proper system by adding a self-monitoring function to a mutual monitoring function between two systems. CONSTITUTION:The self-monitoring function is added to the mutual monitoring function between the two systems. For example, a signal 10 indicating a physical quantity is inputted to the 1st converter 11 and the 2nd converter 12 and converted into analog signals 1a and 2a proportional to the amplitude of the input signal. Then, the analog signal 1a is converted into a digital signal 2a through an analog/digital converter ADC21, and this signal is converted into an analog signal 4a through a digital/analog converter DAC41 to detect whether the analog signals 1a and 4a coincide with each other within a permissible error range through the comparison of a comparator 51. Further, a comparator 52 compares analog signals 1b and 4b with each other similarly. A comparator 3 sends out a normal signal to an A system 61, etc., on the basis of the detection results of the comparators 51 and 52 when the dissidence between the signals 2a and 2b is detected.

Description

[Detailed Description of the Invention] The present invention relates to a dual human-powered data processing device!
This relates to processing when an abnormality occurs in the human data for one potato.

Figure 1 is a block diagram showing a conventional device.
1 The old is the first converter, the α force is the second converter, (2 is the first analog digital converter (hereinafter abbreviated as Al)C), (22) U @2 No ADC, +31 t+,j
The ratio axis device (61) is the A system, and (1) 4 is the B system. Also! Ifll.

(Ia), (1b), (2a), (2 indicates each signal.

The signal amount) is, for example, the signal AC voltage obtained from the voltage transformer or N1 current transformer in the power system, and the amplitude of this signal AC voltage is proportional to the voltage to be measured, the amplitude of the mixed current. In this specification, the signal (10), which is generally referred to as a signal representing a physical quantity, is converted into a digital signal and used for various processing and control, but it is converted into a digital signal. If the signal (10) is, for example, a commercial frequency AC voltage, the converter U, (6) is converted into a DC voltage suitable for input to the ADC by the α group. contains all the full-wave rectifier circuits and outputs all the DC voltage proportional to the amplitude of the input AC voltage. Therefore, the signals (la) and (lb) are such DC analog voltages, and the ADCs (21) and (22) respectively
are converted into digital signals (2a) and (2b) by. Signal (2a).

(Since signal 2 is a signal converted from the same signal (lO), signal (2a) and signal (2b) should match.

Comparator (3) detects this coincidence, and if they match, signals (2a) and (2b) are determined to be normal, and if they do not match, it is determined to be abnormal, and both signals (2a) and (2b) are determined to be normal. The conventional input data processing device whose use would be prohibited operates as described above, and when a mismatch between the signals (2a) and (2b) is detected in the comparator (3), (1) Even though there is a high probability that the signal is normal, there is no way to fully confirm which signal is normal, so either humans should judge this, or both signals (2a,) and (2b) should be discarded. There was a drawback that it had to be done.

This invention was made to eliminate the drawbacks of the conventional ones as described above, and when a difference occurs between signals (2a) and (2b), it is automatically determined which signal is normal. The purpose of the present invention is to provide an input data processing device;

Embodiments of the present invention will be described below with reference to the drawings.

Fig. 2 (c) is a block diagram showing an embodiment of the present invention, and is it the same as Fig. 1? No. 1 shows the same or the corresponding part in full,
(41c and 42 are respectively digital analog transformers (hereinafter abbreviated as 1 AC), (51), (5gens are ratio scalers, -(4a,) and (4b) are respectively each iθ
current analog voltage.

DC analog '..., pressure (1a) f ADC (21), D
DC analog voltage (4a) processed by AC (41,)
should be equal to the original DC analog voltage (1a). Therefore, by comparison with the comparator (51), 5 (la
) and (4a) match within the tolerance range, it is possible to confirm that the converter and ADC (21) are operating normally.Similarly, (1b)
If it is completely detected that (4b) and (4b) match within the allowable error range, it can be confirmed that the converter θ2, ADC<, 22) is operating normally.

FIG. 3 is a connection diagram showing switching of input data according to the present invention, where the same reference numerals as in FIG. 2 indicate the same parts, and (3-a)
(3-b) is each contact that is closed when the output of the comparator (3) indicates a disagreement between the two operators, and (3-b) is each contact that is closed when the output of the comparator (3) indicates a match between the two operators. , (51-b) is a contact point that is closed when 5υ indicates a match between two people,
(52-b) is a contact that is closed when the comparator (!j2) indicates a match between the two.

When the comparator (3) indicates a match between the two persons, the signal (
Since both 2a) and (2b) are normal signals, the signal (
The signal (2b) is supplied to the A system (61) through the contact (3-b) to the contact (3-b), and the signal (2b) is supplied to the B system (61) through the contact (3-b). If a discrepancy is indicated, @ indicates that one or both of signals (2a) and (2b) are Geku signals. (3-a) is rll
At this time, the comparator (51) matches G
If it shows 2, then the signal (2+ is normal and 0?
This means that the signal (2a) is the contact (3-a), the contact (51-
b) It is supplied to the B system (li2) through 'i, and it contacts the history (:3-a)k. If it shows ~, it means that the signal (2b) is a stop, and the signal (2b) is a stop sign.
2b) is supplied to the A system (61) via the contact (3-aL (52-10), and is further supplied to the B system (62) via the contact (3-a)';c. ) and signal (2b) are both abnormal, and when signal (2a) does not match signal (2b), contact (51-b),
(f j2-b) are both open and the A system (f
In the above embodiment, no signal is input to either the A system (Jil) or the B system (62). Although we have described an input data processing device that can supply normal human input signals to each system, the device of this invention can be applied to any device that performs mutual monitoring in two systems. By adding a self-monitoring function to the 11] mutual monitoring function between dual systems, this invention can reduce the total system stoppage time. Since it is possible to feed normal data sound systems without relying on judgment, it is possible to reduce the time required to stop the system when input data is abnormal.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a conventional device, FIG. 2 is a block diagram showing an embodiment of the present invention, and FIG. 3 is a connection diagram showing switching of input data in the present invention. (Ill, (12...respectively converter, (21J
, (22)...ADC respectively, +31...Comparator, (41, 1, (42)...Respectively DAC. (bυ, (gl)...Respectively ratio fj, device. Note that in each figure The same reference numerals indicate the same or equivalent parts. Agent Masuo Oiwa

Claims (1)

[Claims] a first converter that inputs all signals representing physical quantities and outputs an analog voltage value representing the amplitude of the human chi No. 3;
a second converter inputting the same signal as the input signal of the converter and outputting an analog voltage value representing the amplitude of the input signal; The first analog-to-digital converter outputs a digital signal representing the input analog voltage value, and the output of this first analog-to-digital converter outputs the analog voltage corresponding to the input digital signal. a first digital analog transformer outputting a value; and the second conversion);
The output analog voltage value of the input analog '1
A second analog-to-digital converter outputs a digital 1 representing 1L voltage fi/jk, and the output of the second analog-to-digital converter is manually input to output an analog voltage value represented by the input digital signal. a second digital-to-analog converter; a first comparator for fully comparing the output of the first converter (moxibustion device) with the output of the first digital-to-analog converter; -the second conversion?:' a second comparator that compares the output of the first analog-to-digital converter with the output of the second digital-to-digital converter; A third comparator for comparison and a complete manual data processing device.