JPH08327739A - Method for collecting fixed-cycle time sequential backup data - Google Patents

Abstract

PURPOSE: To increase the storing number of data by only storing fixed-cycle measured value data containing no time data in a data collecting CPU when a central CPU is down and sending the latest time on the central CPU side to the data collecting CPU when the central CPU rises after the central CPU is restored to a normal state. CONSTITUTION: When a central CPU 1 goes down, the one-minute-cycle measured value data D1 collected by means of a data collecting CPU 2 are stored in the CPU 2 in the form of fixed-cycle time sequential backup data D30 and the data D30 do not contain any measurement time. When the CPU 1 returns to a normal state and starts to rise thereafter, the CPU 1 transmits its own latest time data to the CPU 2. Upon receiving the latest time, the CPU 2 finds the measurement time of the oldest storing data D30-1 from the received latest time, the value (j) of data number D5, and the data measuring period and transmits a second measured value D30-2 to the CPU 1 by adding one minute to the data D30-2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention is, for example, a radiation dose monitoring system for a nuclear facility or the like that monitors the time course of radiation dose (time-series trend data) of each part. A computer (hereinafter referred to as a data collection CPU) that is a slave station that collectively collects the respective measured values from a plurality of measuring means and transmits the collected data in real time,
In a system consisting of a computer (hereinafter referred to as a central CPU), which is a main station that adds the reception time to the collected data transmitted from the data collection CPU and saves the data in time series, while the central CPU is down. Data collection CP
The central CPU restores the backup data (referred to as the regular-cycle time-series backup data) as measurement values that U collects at regular intervals and saves in time series.
The present invention relates to a fixed-cycle time-series backup data collection method for collecting the measurement time data corresponding to the reception time of the data.

In the following drawings, the same reference numerals indicate the same or corresponding parts.

[0003]

2. Description of the Related Art FIG. 3 is an explanatory view of a configuration of a radiation dose monitoring system and an outline of an operation in a normal state. In the figure, 1 is a central CPU, M (M1 to Mn) are monitors spaced apart from the central CPU 1, and are monitors for measuring the radiation dose at the respective installation points, 2
Is near each monitor M1 to Mn and is
Is a data collection CPU that collectively reads each measured value of a constant cycle (in this example, every 1 minute), and transmits the 1-minute cycle measured value data D1 as the read batch data to the central CPU 1 in real time. .

Each time the central CPU 1 receives the one-minute cycle measurement value data D1 for each of the monitors M1 to Mn,
Using the reception time T1 as the measurement time of the 1-minute cycle measurement value data D1, the 1-cycle measurement value data D1 and the fixed-cycle time-series storage data D2 paired with the measurement time are created,
save. In FIG. 3, D2-1, D2-2, ... Are the fixed-cycle time-series stored data D2 arranged in time series held in the central CPU 1 as described above, and D2-1 is the first one-minute cycle measurement value data. Data created when D1 is received, D2-
Reference numeral 2 is data created when the second one-minute cycle measurement value data D1 is received.

FIG. 2 is an explanatory diagram of a conventional backup data collection operation when the central CPU 1 goes down. In this case, the data collection CPU 2 collects each monitor M1 to M
Create a fixed-cycle time-series backup data D3 having the same structure as the above-described fixed-cycle time-series saved data D2 that is a set of the one-minute cycle measured value data D1 for n and the measurement time of the clock that the device itself has, This data D3 is arranged in chronological order and stored in its own memory area.

In FIG. 2, D3-1, D3-2, ...
.., D3-j are data collection CPUs 2 in this way
It is the fixed-cycle time-series backup data D3 that is stored in the first time, the second time, ... When the central CPU 1 returns from the down state to the normal state, the fixed-cycle time-series backup data D3-1 to D3-j accumulated in the data collecting CPU 2 during the down are transmitted to the central CPU 1 and collected and stored in the central CPU 1. After that, the operation returns to the operation described with reference to FIG.
The 1-minute cycle measurement value data D1 collected by 2 is transmitted to the central CPU 1 in real time.

[0007]

However, such a conventional method of collecting time-series backup data of the fixed period has the following problems. It is necessary to store the time and the measured value as a pair on the data collecting CPU 2 side, and an area for storing the measured value as well as the time is required.

If the time on the side of the central CPU 1 is the standard time, the time included in the backup data D3 is
It becomes the time on the data collecting CPU 2 side, and the time in the backup data D3 and the time on the central CPU 1 side may not match. Therefore, the present invention solves such a problem, and when the central CPU side is the standard time, the time of the backup data is also the standard time of the central CPU side,
Also, there is provided a method for collecting backup data in a fixed cycle that enables the backup data stored by the data collection CPU to include only measured values without including the time, to effectively use the data storage area and maximize the backup period. The challenge is to provide.

[0009]

In order to solve the above-mentioned problems, in the method for collecting backup data in a fixed cycle according to claim 1, a plurality of measuring means (monitors M1 to Mn) are set at fixed intervals.
Slave station (data collection C) that collects the measured values of (1) and collects them immediately and transmits the fixed cycle measured value data (1 minute cycle measured value data D1, etc.) as a batch of data immediately after the collection.
PU2), and the reception time is added to the fixed cycle measurement value data received from the slave station, and (fixed cycle time series saved data D2-
1, D2-2, ...) In a system consisting of a master station (central CPU 1) that stores in time series, the slave station collects the fixed cycle measurement value data (fixed cycle) when the master station is down. Time-series backup data D30-1, D3
0-2, ...) Time-series data of the number of saved periodical cycle measured value data (data number D)
5) Stored together with the main station, when the main station recovers and starts up, the latest time is received from the main station, and the periodic time measurement value data stored in time series is stored based on the received latest time, the number of stored data, and the cycle. For each time, the reception time to be received by the master station in a normal state is calculated, and the corresponding reception time is added to the stored fixed cycle measurement value data and transmitted to the master station.

According to a second aspect of the present invention, there is provided a backup data collection method according to the first aspect, wherein the slave station stores the periodic measurement data in a first-in first-out predetermined size. Be sure to save it in the memory area. Further, in the method for collecting backup data in a fixed cycle according to claim 3, in the backup data collecting method according to claim 1 or 2, the system is a radiation dose monitoring system.

[0011]

[Operation] Ordinary online fixed-cycle time-series data D
2 includes the reception time T1 of the central CPU 1 as the measurement time, and when the central CPU 1 is down, the data collection CPU 2
Is a fixed cycle that does not include time data (in this case, a 1-minute cycle)
Only the measured value data D1 of (1) is stored in chronological order as the fixed cycle time series backup data D30.

When the central CPU rises after returning to normal, the latest time (standard time) on the side of the central CPU is sent to the data collecting CPU, and the data collecting CPU stores the latest time and the number D5 of saved periodic time series backup data D30. Therefore, the regular time series backup data D30 for each cycle
The oldest measurement time is obtained from the latest time viewed from each central CPU, and backup data D3 for each cycle to the central CPU is obtained.
When 0 is transmitted, the measurement time is sent as a pair. This allows
The standard time on the side of the central CPU can be used as the measurement time paired with the backup data, and the time need not be saved in the backup data saving area of the data collecting CPU.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT FIG. 1 is a flow chart showing the operation of the central CPU 1 for collecting fixed-cycle time series backup data from the data collecting CPU 2 according to the present invention. In the figure, D4 is a first-in-first-out (First In First Out) of a predetermined capacity when the data collecting CPU 2 is down of the central CPU 1.
backup data to be stored in the memory area of t), which is D30 (D30-1, ..., D30-) in this data D4.
j) is new fixed cycle time series backup data.
D30-1 is the oldest (first) time in the fixed-cycle time-series backup data D30 consisting of one-minute cycle measurement value data D1 at the same time for each monitor M1 to Mn, and D30-2 is 2 The 30th time, D30-j, is also the latest (jth time). D5 is the backup data D for each cycle in the backup data D4.
Number of storage of 30-1, ..., D30-j (j in this case)
Is.

The operation of FIG. 1 will be described. Before the central CPU 1 goes down (normal time), the 1-minute cycle measurement value data D1 collected by the data collecting CPU 2 is transmitted to the central CPU 1 in real time as indicated by a dotted arrow. The reception time T1 is added in the same manner as described with reference to FIG. 3, and is stored in the central CPU 1 as the fixed cycle time series storage data D2. Next, when the central CPU 1 goes down like, the data collection CP
The 1-minute cycle measurement value data D1 collected by U2 is stored in the data collection CPU 2 in the form of fixed-cycle time-series backup data D30 as indicated by the solid arrow. That is, D30
-1, ..., D30-j are the one-minute cycle measured value data D1 of each monitor M1 to Mn for every one minute arranged in time series, respectively, and are the conventional fixed cycle time series backup data shown in FIG. As in D3, the fixed cycle time series backup data D30 does not include the measurement time.

Next, when the central CPU 1 returns to the normal state and starts to rise at, the central CPU 1 sends its latest time (standard time) to the data collecting CPU 2. As a result, the data collection CPU 2 obtains the measurement time of the oldest stored data D30-1 from the latest time and the value j of the number of data D5 and the data measurement cycle transmitted as follows.
However, in this example, the data measurement cycle is one minute, and therefore it cannot be expressed by the following equation.

[0016]

[Equation 1] The earliest (first) measurement time = (latest time) −
(Data Number Value j) Next, the data collecting CPU 2 firstly measures the measured value D30 of the stored monitors M1 to Mn as indicated by.
The oldest measurement time is added to -1 and transmitted to the central CPU 1, and the second measurement value D stored next is stored as shown in.
A measurement time obtained by adding 1 minute to the oldest time is added to 30-2 and transmitted to the central CPU 1.

Thereafter, the data collection CPU 2 adds the measurement time to the time series measurement values (constant period time series backup data D30) stored by the same method and transmits the time series measurement values to the central CPU 1, as shown at the end. The latest time is added to the stored j-th (latest) measurement value D30-j as the measurement time and transmitted to the central CPU 1. The central CPU 1 stores the data thus transmitted from the data collecting CPU 2 in the form of the fixed cycle time series storage data D2 and finishes the rising operation, and thereafter starts the normal operation described in FIG.

[0018]

According to the present invention, when the central CPU 1 is down, the data collecting CPU 2 uses the 1-minute cycle measurement value data D1 of each monitor M1 to Mn as the fixed cycle time series backup data D30 without adding the measurement time. The time data is stored, and the number of stored data D5 for each time is stored, and when the central CPU 1 recovers and rises, the latest time is received from the central CPU 1. The latest time, the number of stored data D5, and the data measurement From the cycle, the respective measurement times of the fixed-cycle time-series backup data D30 being saved as viewed from the central CPU 1 are obtained, and the corresponding measurement times are added to the saved data D30 and transmitted to the central CPU 1. Therefore, all the measurement times of the fixed cycle time series backup data D30 collected by the central CPU 1 are central CPU.
The measurement time is unified from the viewpoint of 1, the time discrepancy is eliminated, and the measurement time is not required for the fixed-cycle time-series backup data D30 stored by the data collection CPU2, so that the data storage area is effectively used compared to the conventional case. If the data storage area is the same as before, the backup period will be increased (that is, the number of data storages will be increased).
be able to.

[Brief description of drawings]

FIG. 1 is a flow chart showing an operation of collecting regular-cycle time-series backup data according to the present invention.

FIG. 2 is an explanatory diagram of a conventional fixed-cycle time-series backup data collection operation.

FIG. 3 is an explanatory view of the configuration of a radiation dose monitoring system and an outline of a data collection operation during normal times.

[Explanation of symbols]

1 Central CPU 2 Data collecting CPU M (M1 to Mn) monitor D1 1 minute cycle measurement value data T1 reception time D2 (D2-1, D2-2, ...) Periodic time series save data D4 Backup data D5 Number of data D30 (D30-1, ~, D30-j) Fixed cycle time series backup data

Claims (3)

[Claims] 1. A slave station which collects the measured values of a plurality of measuring means together at a fixed cycle and immediately transmits the fixed cycle measured value data as a batch of data immediately after the collection and a slave station which receives the measured value data from the slave station. In a system consisting of a master station that adds the reception time to the fixed cycle measurement value data and saves it in time series, the slave station, when the master station is down, collects the fixed cycle measurement value data in time series and This is stored together with the number of saved periodic cycle measurement value data for each cycle, and the latest time is received from the master station when the master station recovers and starts up.
From the latest received time, the number of stored data, and the cycle, the reception time that the master station should normally receive for each fixed cycle measurement value data saved in time series is calculated, and the saved fixed cycle measurement is performed. A fixed-cycle time-series backup data collection method characterized in that the corresponding reception times are added to the value data and transmitted to the master station. 2. The backup data collecting method according to claim 1, wherein the slave station stores the fixed cycle measurement value data in a memory area of a first-in, first-out predetermined size. Periodic time series backup data collection method. 3. The backup data collection method according to claim 1, wherein the system is a radiation dose monitoring system, and the regular cycle time series backup data collection method.