JPH0357398A - Data collection control method - Google Patents

Abstract

PURPOSE:To attain effective utilization of a file by sending a current data to a center device when a deviation between the current data from a sensor and a data sent precedingly exceeds a reference deviation and storing the data to the center device together with time information. CONSTITUTION:A data collection terminal equipment 2 collects a data from plural sensors (1-1)-(1-n). A deviation collation section 4 of the terminal equipment 2 stores the data sent precedingly, obtains the deviation with the current data from the sensors, collates the deviation with a preset reference deviation, sends the data to a center equipment 3 only when the current deviation exceeds the reference deviation and the sent data is stored in the center equipment 3. When the current deviation is within the reference deviation, the current data is aborted and no transmission is implemented. Thus, the data is sent to the center equipment 3 when the deviation exceeds the reference deviation. The centre equipment 3 receives the data and stores the data into a file 6 together with time information by a time processing section 5.

Description

[Detailed Description of the Invention] [Summary] Regarding data collection control method 2 for collecting data from various sensors in centralized monitoring of various equipment, etc., effective use of files is achieved and the processing load on the center device is reduced. The data collection terminal device has a data collection terminal device that collects data from a plurality of sensors, and a center device that receives and processes data from the data collection terminal device, and the data collection terminal device is configured to perform deviation verification. The deviation checking unit checks whether the deviation between the current data from the sensor and the previously transmitted data is within the standard deviation amount, and if the deviation exceeds the standard deviation amount, the current data is to the center device, and the center device includes a time processing section and a file, and is configured to store data from the data collection terminal device in the file together with time information from the time processing section. .

[Industrial application field]

The present invention relates to a data collection control method for collecting data from various sensors during centralized monitoring of various equipment.

Distributed temperature + 7, such as in building management systems, etc.
In systems that perform intensive monitoring by collecting data from various sensors such as W-degree sensors and buried detectors, it is possible to improve the accuracy of collected data without increasing the processing load on the computer of the center device. This is requested.

[Conventional technology]

FIG. 4 is an explanatory diagram of a conventional example. For example, in a building management system, various sensors 4 are distributed on each floor.
l-1 to 4]1-n are connected to data collection terminal devices 42-1 to 42-m arranged on each floor, and the data collection terminal devices 42-1 to 42-m and the center device 43 are connected to the transmission line. data from the various sensors 41-1 to 41-n is transmitted from the data collection terminal devices 42-1 to 42-m to the center device 4 at fixed time intervals such as five-minute intervals.
Transferred to 3.

In the center device 43, data collection times t1, t2,
... is provided with a file 44 having an area for storing data D1 to Dn from the sensors 41-1 to 4ln in correspondence with tk, for example, data for 24 hours is stored,
The information is processed by a computer and, for example, temperature changes over a 24-hour period are displayed or printed out.

[Problem to be solved by the invention]

As mentioned above, in the conventional data collection control system, the file 44 in the center device 43 is stored in the files 44 of the sensors 41-1 to 41- corresponding to data collection times t1 to tk.
For example, if the number of sensors is 300, the data collection time interval is 5 minutes, and the data length is 32 bits, the file 44 for storing data for 24 hours is , 2764800 (bits) #350K bytes of capacity is required.

In this case, even if the data from the sensor hardly changes, data is collected at regular time intervals and stored in the file 44, so almost the same data is stored continuously. Therefore, there is a drawback that the file 44 cannot be used effectively, and the burden of data collection processing cannot be reduced. Also, since the data stored in the file 44 is in absolute value form, the data for one time per I sensor is 16~
It is composed of approximately 32 bits, and therefore has the drawback of requiring a large amount of data storage area.

An object of the present invention is to make effective use of files and to reduce the processing load on a center device.

[Means to solve the problem]

The data collection control method of the present invention transmits the data to the center device only when a change in data exceeds a standard deviation amount, and will be explained with reference to FIG.

The data collection terminal device includes a data collection terminal device 2 that collects data from a plurality of sensors I-1-1-n, and a center device 13 that receives and processes the data from the data collection terminal device 2. 2 includes a deviation checking unit 4, which checks whether the deviation between the current data from the sensors 1-1 to 1-n and the previously transmitted data is within a standard deviation amount; If the standard deviation amount is exceeded, the current data is sent to the center device 3, and the center device 3 is equipped with a time processing section 5 and a file 6, and the data from the data collection terminal device 3 is sent to the center device 3. This process is performed to store the time information in the file 6.

[Effect]

The deviation comparison unit 4 of the data collection terminal device 2 retains the previously transmitted data, calculates the deviation from the current data from the sensor, compares the deviation with a preset standard deviation amount, and calculates the standard deviation amount. The data is transmitted to the center device 3 only when the data exceeds 1, and the transmitted data is held. If it is within the standard deviation amount, the current data is discarded and no transmission is performed. Therefore, data is transmitted to the center device 3 only when the data has changed by more than the standard deviation amount.

The center device 3 receives the data and stores it in a file 6 together with time information from the time processing section 5. Therefore, the data collection terminal device W2 collects data at regular time intervals, and data that hardly changes is not sent. This reduces the processing load on the center device 3, and only data that has changed is stored in the file 6. Since the data is stored so that the collection time is known, the file 6 can be used effectively.

(Example) Examples of the present invention will be described in detail below with reference to the drawings.

FIG. 2 is a block diagram of an embodiment of the present invention, and 11-1
-1f-n is various sensors for temperature, humidity, smoke, etc., I2 is a data collection terminal device, 13 is a center device, 14 is a deviation comparison section, 15 is an interface section to which the sensors are connected, l6
Reference numeral 17 indicates a reference deviation amount setting section that sets a reference deviation amount in accordance with the type of sensor, etc., 17 indicates a notification data raw bottom section that determines the data to be sent to the center device, 18 indicates a notification data table, and 19 indicates data transmission. 2l is a data receiving section, 22 is a collection time management section, 23 is a data storage control section for storing the received data, 24 is a storage pointer calculation section for calculating the address etc. for storing the received data, and 25 is a storage pointer calculation section. 26 is a file, 27 is a time pointer calculation unit, 28 is a data succession control unit, 29 is a deviation amount calculation unit, 30
31 is an absolute value calculation unit, and 31 is a data request reception unit from a processing program for displaying etc.

The arc collection terminal device I2 includes a plurality of sensors II-■~!
Data from 1-n is collected via the ink face unit 15 at regular time intervals (eg, short time intervals such as 10 seconds). Further, the reference deviation amount setting section 16 includes a sensor 1l.
-1 to 11-n, the standard deviation amount is set for each type, etc. For example, as the standard deviation amount for the temperature sensor, 0. The temperature can be set at 5°C.

The deviation matching section 14 calculates the deviation between the data transmitted last time and the data collected this time for each of the sensors 11-1 to 11-n, and compares the deviation with the standard deviation amount set in the standard deviation amount setting section I6. If the deviation is within the standard deviation amount, the data collected this time will be discarded. If the deviation exceeds the standard deviation amount, the notification data monitoring unit 17 corrects the data to be sent to the center device 13 and stores it in the notification data table 18. For example, if the standard deviation amount of temperature is set to 0.5℃,
If the temperature data sent last time was 20.3°C and the temperature data collected this time is 20.5°C, the deviation is 0.2°C, so it is within the standard deviation amount, and the temperature data collected this time is discarded. Also, if the temperature data collected this time is 20.9℃, the deviation from the data sent last time is 0.6.
.degree. C., which exceeds the standard deviation amount of 0.5.degree. C., so this deviation of 0.6.degree. C. is used as transmission data. Then, it is determined whether the next collected data should be discarded or transmitted based on the deviation from the current transmitted data of 20.9°C. In this way, the data to be transmitted is not in the absolute value format but in the deviation value format, and for example, about 8 bits is sufficient. In the center device 13, the data collection terminal device 12 is sent to the data collection terminal device 12 at fixed time intervals (for example, every minute) by the collection time management unit 22.
As a result, the data read from the notification data table 18 of the data collection terminal device 12 is transmitted from the data transmitter 19, and the data is received by the data receiver 21 and stored. Control unit 2
It is stored in file 26 under the control of 3. At this time, the time mark processing unit 25 processes the time mark as time information, and the storage pointer calculation unit 24 calculates a storage pointer that indicates the area in which data is to be stored.

The file 26 has the structure shown in FIG. 3, for example, and includes areas F1 to F1 corresponding to the sensors 11-1 to 11-n.
Fn, and each area Fi (i-1. 2, 3
, ...n) are the maximum number of stored items a, the storage start pointer b, the storage time mark C, the absolute value data d at the reference time, the number of stored items up to the current time e1, the received data Dix
It has a storage area of (i, x=1.2.3,...)f.

The storage head pointer b indicates the head address of the received data storage area f, and the storage time mark C is 1440 times in 24 hours, for example, if the fixed time interval at which data is collected is 1 minute. A time mark is set by setting "1" at the 1440th bit position. For example, if the reference time is 0:00 minutes, the 72nd bit is “
1'' indicates time 1 of 1:12.

Furthermore, the absolute value data d at the reference time is such that the data collected at the reference time, for example, 0:00, is in the absolute value format, and the data collected thereafter is in the deviation value format. Also, the number of items stored up to the current time e is the storage time mark C.
This indicates the same value as the number of time marks in .

The above-mentioned time mark processing section 25 sets the storage time mark C of the file 26 based on the time information from the collection time management section 22.
The storage pointer calculation unit 24 adds a time mark to the received data D based on the storage head pointer b, the data length, and the number of items stored up to the current time e.
This is to calculate the storage address of ix.

Therefore, the file 26 stores the deviation from the previous data for data that has changed in response to the sensor 11-i by more than the standard deviation amount, so even if the data collection time interval is as short as one minute, Since the deviation is often small, it is sufficient to have enough capacity for a data collection time interval of about 5 minutes, and since the data collection time interval can be shortened to about 1 minute, it is possible to achieve high accuracy. Data can be collected.

Further, when there is a request for data at a certain time from the data request reception unit 31, the time pointer calculation unit 27 refers to the storage time mark C of the file 26 and adds a time mark to the requested time. In this case, the number of time marks from the reference time to that time mark is determined, the data storage area at the requested time is determined, and the data read control unit 28 reads the absolute value data at the reference time and the requested time j. , Bl
The deviation amount calculation unit 29 reads out the data up to
Calculate the deviation amount from the absolute value data based on the standard deviation amount,
The absolute value calculation unit 30 calculates the absolute value data at the requested time and sends it to the data request reception unit 31.

If a time mark is not attached to the requested time, find the time mark corresponding to the time closest to the requested time, and calculate the absolute value data using the same process as described above based on the data corresponding to that time mark. and sends it to the data request reception unit 3l. The data request reception unit 3l sends absolute value data to a request source such as a processing program or a display device. In addition, when displaying changes in collected temperature data, etc. over a 24-hour period in a graph, the absolute value data at the reference time stored in the file 26 and the time are used without converting all data to absolute value data. It is sufficient to send information indicating the passage of time based on the mark and deviation value data to the data request receiving section 31.

The present invention is not limited to the above-mentioned embodiments; for example, instead of the storage time mark C, time information may be added to the data and stored.

〔Effect of the invention〕

As explained above, the present invention provides data collection terminal device 2
In the deviation comparison unit 4, a plurality of sensors 1-1 to 1-n
Find the deviation between the current data and the data sent last time, check whether the deviation is within the standard deviation amount, and send the current data to the center device 3 only if it exceeds the standard deviation amount. The center device 3 stores the received data in a file 6 together with the time information from the time processing section 5. If there is little change in the data collected by the data collection terminal device 2, the data is discarded. Therefore, even if the collection time interval is shortened to collect highly accurate data, the processing load on the center device 3 does not increase, and the capacity of the file 6 does not need to be increased. There are no advantages. Furthermore, by storing the data in the deviation value format, the amount of stored data can be reduced, so that the file 6 can be used effectively.

Therefore, it has the advantage that it can be applied not only to building management systems but also to systems that collect data from other sensors to realize an economical structure.

[Brief explanation of drawings]

Fig. I is an explanatory diagram of the principle of the present invention, Fig. 2 is a block diagram of an embodiment of the present invention, Fig. 3 is an explanatory diagram of the file structure of an embodiment of the present invention, and Fig. 3 is an explanatory diagram of the file structure of an embodiment of the present invention. The leapfrog is an explanatory diagram of a conventional example. 1-1 to 1-n are sensors, 2 is a data collection terminal device, 3
Reference numeral 4 indicates a center device, 4 indicates a deviation comparison unit, 5 indicates a time processing unit, and 6 indicates a file. Patent issuer Fujitsu Limited

Claims (1)

[Claims] A data collection terminal device (2) that collects data from a plurality of sensors (1-1 to 1-n), and receives and processes data from the data collection terminal device (2). Center device (3
), the data collection terminal device (2) includes a deviation comparison section (4), and the deviation comparison section (4) detects the sensors (1-1 to 1).
It is checked whether the deviation between the current data from the center device (1-1n) and the previously transmitted data is within the standard deviation amount, and if it exceeds the standard deviation amount, the current data is sent to the center device (3).
), and the center device (3) sends the data to the time processing unit (5).
and a file (6), and the data collection terminal device (
2) is stored in the file (6) together with time information from the time processing unit (5).