JPS5870171A - Pulse data collecting device - Google Patents

Abstract

PURPOSE:To reduce considerably the processing quantity of a post-processing concerning the variance of a detection signal, by collecting pulse data and detecting feature data such as maximum, minimum, and smoothed values of various parameter of respective pulses such as pulse intervals, pulse widths, frequencies, and pulse amplitudes. CONSTITUTION:When pulse data 2a passes through a pulse filter 3, the difference between the arrival time of the preceding passing pulse and the arrival time of the current passing pulse is calculated in a circuit 7 of a pre-processing device 12 for detection of the variance of a detection signal, and this difference, namely, a pulse repeat interval is inputted to a register 8 and is stored temporarily. The pulse interval between the current passing pulse and the preceding passing pulse is checked for validity; and if it is valid, a feature detecting circuit 9 calculates a smoothed value of a pulse interval PI and stores it in a feature data storage memory 10. Next, the feature detecting circuit 9 compares the value of the pulse repeat interval with maximum PI data of the feature data memory 10 to renew contents of the memory 10. Thus, the variance of the detection signal is detected beforehand to discriminate whether the analysis of collected data is required or not before the puse analysis on a basis of check results of only feature data, and therefore, the burden of the post-processing is reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention reduces the amount of processing required for radio wave analysis by a computer or a connected device having a computer function in a device that receives pulsed radio waves and analyzes the radio wave specifications. The present invention relates to a pulse data acquisition device equipped with a change detection preprocessing device.

A conventional pulse data acquisition device is shown in FIG. In the figure, (1) is the arriving pulse and (2
) are the specifications of this pulse (1), such as the pulse interval,
This is a pulse specification calculation circuit that calculates pulse width, frequency, pulse amplitude, etc. as digital values, and outputs the calculated specifications as pulse data.

(3) is a pulse filter that filters this pulse and pulse data output (2 turtles) by frequency, pulse width, etc., and (4) is this pulse filter? A pulse storage control circuit receives the pulse data output (3 gourds) that has passed through +31 and stores the pulse data in the memory (5) by controlling the address of the pulse specification memory (5) in the order in which the pulses arrive. It is. (6) is the above pulse specification memo,
), which is output to a computer (not shown) for post-processing as normal pulse data.

Next, the operation will be explained.

The pulses (1) arrive one after another over time, and digital data such as the pulse interval, pulse width, frequency, pulse amplitude, arrival time, etc. of each pulse is determined by the pulse specification calculation circuit (2). Of each of the obtained pulse data (23), only pulse data that satisfies predetermined data such as pulse interval, frequency, and pulse width set in the pulse filter (3) is selected from the pulse filter (3).
). The pulse data (:l)'' that has passed through the pulse filter (3) is then transferred to the pulse storage control circuit (4).
) are input one after another into the pulse specification memory (5) in the order of the passing pulses, and are stored as digital values of the pulse specifications determined by the pulse specification calculation circuit (2). This data is output as pulse data (6) at regular intervals or as needed to a computer (not shown) that performs post-processing or a connected device (not shown) that performs an equivalent function. In this way, with this device, predetermined specifications and
Pulse data can be collected with

Since the conventional pulse data collection device is configured as described above, it is necessary to always use a post-processing device such as a computer connected to the device to determine whether or not a change has occurred in the collected pulse data. However, this method has the drawback of increasing the amount of processing required by computers, etc.

In addition, among the pulse specifications, the pulse repetition frequency value etc.
By analyzing the collected pulse data in post-processing,
There is also a disadvantage that it is unnecessary to obtain the repetition interval between related pulses and calculate it from its smoothed value, which further increases the burden on the post-processing device.

This invention was made in order to eliminate the drawbacks of the conventional ones as described above, and it is possible to analyze incoming pulse data that has passed through a pulse filter, including its pulse interval, passed pulses, number of pulses, pulse width, frequency, and pulse filter. Detection is performed by focusing on pulse specifications such as amplitude, and storing characteristic data such as the number of arriving pulses within a certain period of time, or the maximum, minimum, and smoothed values of pulse intervals and other pulse specifications in memory. By detecting signal changes in advance, pulse analysis can be used to check whether the current collected data is different from the previous one, and whether or not it is necessary to analyze the collected data, by simply checking this characteristic data. The purpose of the present invention is to provide a pulse data acquisition device that can make a judgment before performing the process and reduce the burden of post-processing.

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

FIG. 2 shows a pulse data acquisition device equipped with a P4S detection 4 signal change detection preprocessing device according to an embodiment of the present invention, and in the figure, the same reference numerals as in FIG. show. (7) is a pulse repetition/interval detection circuit that calculates the interval between pulses that have passed through the pulse filter (3), and (8) is a pulse repetition interval (Pulse Interval; hereinafter referred to as PI) detected by this pulse repetition interval detection circuit (7).
a pulse repetition interval register that temporarily stores the pulse repetition interval (referred to as
9) counts each pulse passing through the pulse filter (3) and the number of passing pulses, and also counts the PI of the pulse repetition interval register (8) and the pulse specification calculation circuit (2).
A feature detection circuit that reads the pulse width, frequency, and pulse amplitude obtained in , calculates the maximum PI, minimum PI1, and smoothed PI within a certain time, and similarly performs feature detection for the pulse width, frequency, and pulse amplitude. , (1(I is the circuit (
9) is a feature data storage memory that stores feature data detected by step 9). Then, 20υ transmits the pulse data (
This is feature data output similarly to 6). The above-mentioned circuit elements (7) constitute a detection signal change detection egg processing device (2) that detects a change in the detection signal in advance.

FIG. 3 shows a flowchart of the feature detection process of the feature detection circuit 2 (9), in which Bl is the step of increasing the counter by +I every time a pulse arrives to count the number of arriving pulses, and B2 is the pulse interval Pli. B3 is a step of calculating a smoothed value PI i (S) of the pulse interval PIi based on a predetermined calculation formula, and B4 is a step of determining whether the pulse interval PIi exceeds the maximum value P1max of the pulse interval. Step of determining whether or not the limit has been exceeded, B
5 indicates that the pulse interval P is the maximum value PImax of the pulse interval
Step B6 is a step of determining whether the pulse interval Pli is smaller than the minimum value PImin of the pulse interval, and B7 is a step in which the pulse interval Pli is set as the new maximum value of the pulse interval. Minimum interval - P
This step is to set Pli to a new minimum value of the pulse interval PI when it is smaller than Imim.

Next, the operation will be explained using FIGS. 2 and 3.

The storage of each pulse data that has passed through the pulse filter (3) is performed in the same manner as in the conventional device.

The next two-pulse data (21') is the pulse filter (3)
, this device first calculates the difference between the arrival time of the pulse that passed last time and the arrival time of the pulse that passed this time in the pulse repetition interval detection circuit (7) of the detection signal change detection preprocessing device α2, and difference, i.e. pulse repetition interval Pl
Enter i into the pulse repetition interval register (8) and temporarily store it. Further, the current arrival time is stored in the detection circuit (7) for use in the next PI calculation. At this timing, the feature detection circuit (9) detects feature data according to the procedure of the flowchart shown in FIG. That is, the number of pulse data that has passed through the pulse filter (3) is counted in step B1. Next, move to step B2,
Whether the pulse interval between the pulse that arrived this time and the pulse that arrived last time is appropriate is determined based on whether the magnitude of Pli is greater than or equal to a specified value. Then, the pulse interval Pli is larger than the specified value and is the maximum P I within a certain period of time.

If it is not appropriate for use in calculating smooth PI or small PI, steps B3 to B7 are passed and the process waits for the arrival of the next data, and data in the feature data storage memory other than the number of pulses is not updated. On the other hand, if the pulse interval Pli is appropriate, the feature detection circuit (9) calculates a smoothed value of PI in step B3, and stores it in the feature data storage memory α. This smoothing St is performed using the f-th order calculation formula.

PI 1(S)-PI 1-1(S))-(XPIl
(PI 1-1(S)-PI i ) (1) Here, PIi(S) is determined by the Noculus repetition interval rti of the Noculus that has arrived this time. <) Less repetition interval smoothing result, p
xt-t(s) is the result of smoothing the S7-less repetition interval by the pass repetition interval PIi-1 of the previous /x pass,
(Xp is a smoothing coefficient, and is usually set to 0 × α8 × 1.

Further, Pli is the current arrival, <)res 7<path repetition interval value.

Next, the feature detection circuit (9) performs step B41 and 111.
The pulse repetition interval value Pli is compared with the maximum PI data p1mHc of the feature data memory αe. Here, the pathless repetition interval value PIi is the dilated PI data PIm
If it exceeds , then in step B51, PIi is set as the new maximum PI data PImax, and the value of the memory α is updated. On the other hand, if the pulse repetition interval value PIi is less than the maximum PI data P1max, the conventional maximum I'I
The data P1max is stored as is in the memory αe.

Then, in step B6), the JXP1X-
1 data Pn is also compared with the f-pass repetition interval value PIi in the same way as the maximum PI data PIm, and if the noiseless repetition interval value Pit is less than the minimum PI data P1min, the minimum PI data PImin in the memory ae is updated, Otherwise, the minimum PI data of memory cry PIm
The value of in is saved until that time. In this way, the feature detection circuit (9) counts the number of arriving pulses, and calculates the maximum PI,
It calculates the smooth PI and minimum PI, updates the data in the memory aI as appropriate, and waits for the arrival of the next data. and,
In the same way as above, the present feature detection circuit (9) also performs feature detection regarding pulse width, frequency, and pulse amplitude, and the pulse feature data a9 obtained in this way by the feature detection circuit (9) is of the detection signal. This pulse characteristic data αυ is stored in the characteristic data storage memory α.
[After being stored once in the detection signal change detection preprocessing device a
Similarly to pulse data (6), it is output to a connected device (not shown) for post-processing. - As described above, according to the present invention, pulse data is collected, and the maximum, minimum, smoothed value, etc. of the specifications of each pulse such as pulse number and pulse interval, pulse width, frequency, and pulse amplitude are collected. Since the configuration is configured to detect feature data, it is possible to detect changes in the detection signal by simply determining the difference in the value of the feature data without analyzing the pulse data in post-processing. The detailed analysis of the pulse data in step 2 only needs to be performed when a change in the feature data is detected, which has the effect of greatly reducing the amount of post-processing related to changes in the detection signal.

In addition, if the maximum pulse interval and minimum pulse interval, which are characteristic data of pulse intervals, are integer multiples, it can be determined that the detection signal is almost a single signal. This can be reflected in the specifications, which also has the effect of reducing analysis processing time.

[Brief explanation of drawings]

FIG. 1181 is a block diagram showing a conventional pulse data acquisition device, FIG. 2 is a block diagram of a pulse data acquisition device according to an embodiment of the present invention, and FIG. 3 is a block diagram showing a feature detection circuit of the device of this embodiment. It is a flowchart figure which shows a processing procedure. (2)...Pulse storage control circuit, +a+...Pulse filter, (4)...Pulse storage control circuit, (5).
...Pulse specification memory, (7)...Pulse repetition interval detection circuit, (9)...Characteristic detection circuit, <1 (1...
- Feature data storage memory, o2... detection signal change detection pre-processing device. The same reference numerals in the first figure indicate the same or equivalent parts. Agent Shin-Shin Kuzuno 3. Written amendment to the national procedure (voluntary) Mr. Commissioner of the Patent Office 1. Indication of the case Patent application No. 56-169570
No. 2, Title of the invention Pulse data acquisition device 3,
Person making the amendment 5, Sakaki of the claims of the specification to be amended and -6 of the detailed description of the invention, Contents of the amendment (1) The claims of the specification are corrected as shown in the attached sheet. (2) The specification shall be amended as follows. Claims (1) A pulse specification calculation circuit that calculates pulse specifications including a pulse interval for an incoming pulse and outputs the calculated specifications as pulse data, and a pulse data output of this pulse specification calculation circuit. A pulse filter that passes only pulses whose specifications fall within a predetermined range, a pulse storage control circuit to which the output pulse data of this pulse filter is input, and the pulse data is stored in an address controlled by the pulse storage control circuit. fM pulse specification memory and which collects pulse data having pulse specifications within a predetermined range from an incoming pulse, a pulse repetition interval for detecting a pulse repetition interval of output pulse data of the pulse filter. A detection signal change that detects a change in the detection signal in advance, comprising a detection circuit, a feature detection circuit that detects feature data of pulse data including the pulse repetition interval, and a feature data storage device that stores the feature data. A pulse data acquisition device comprising a detection preprocessing device.

Claims (1)

[Claims] (1) A pulse specification calculation circuit that calculates pulse specifications including pulse intervals for incoming pulses and outputs the calculated specifications as pulse data; A pulse filter that passes only those whose intervals fall within a predetermined range, a pulse storage control circuit to which the output pulse data of the pulse filter and filter are stored, and the pulse data is stored in an address 4 controlled by the pulse storage control circuit. Equipped with pulse specification memory,
a pulse repetition interval detection circuit that detects a pulse repetition interval of output pulse data of the pulse filter by directing the incoming pulse to a pulse data collection device that collects pulse data having pulse specifications within a predetermined range; and a feature data storage memory that stores the feature data, and a detection signal change detection pre-processing device that detects a change in the detection signal in advance. Characteristic pulse data acquisition device. .