JP3494291B2 - Notification device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reporting device for automatically reporting an abnormality detected by a sensor to a receiving device such as a monitoring center via a communication line, and more particularly to a standard for supplying an abnormality occurrence time from the receiving device. The present invention relates to a reporting device that corrects based on time information and reports accurate abnormality occurrence time information and abnormality information (sensor information).

[0002]

2. Description of the Related Art Generally, when a sensor detects an abnormality of a detection target, a notification device automatically sends a sensor number or status sensor information to a receiving device (for example, a monitoring center) via a communication line. Notification data including (abnormality information) and abnormality occurrence time information of the abnormality detected by the sensor is reported.

The accuracy of the abnormality occurrence time is determined by the accuracy of the timepiece mounted on the notification device. However, the accuracy of the timepiece of the notification device is not high and an error occurs in the clock data, so that the timepiece of the notification device is regularly checked. Data must be corrected.

In the conventional reporting device, the clock data is corrected by the following two methods, for example. (A) When there is an abnormality report from the reporting device, the clock data is corrected from the receiving device on the center side via the communication line. (B) At the time of regular notification (for example, once a day), the clock data of the notification device is corrected from the reception device on the center side via the communication line.

[0005]

Since the abnormality occurrence time is used for predicting the cause of the abnormality occurrence during maintenance and maintenance of the reporting device and for the reference of the time required from the occurrence of the abnormality until the countermeasure, the accurate time (center Same time as the receiving device)
Is desired.

In the conventional clock data correction method (a), since the correction of the clock data is executed when the abnormality is reported (after the transmission of the reporting data), the error of the clock data becomes large unless the abnormality is reported. is there.

Further, a conventional clock data correction method (b)
, The clock data is corrected every time a regular report is made (for example, once a day), so the error in the clock data is a maximum of one day, but the line usage fee (running cost) increases as the number of reports increases. There is a problem that will increase.

Further, it is conceivable to make the timepiece mounted on the notification device highly accurate, but when there are many notification devices, the total cost spent on the timepiece increases, which is not realistic.

The present invention has been made to solve such a problem, and an object thereof is to provide the clock data (reference clock) of the receiving device when the receiving device responds at the time of occurrence of the abnormality detected by the sensor. It is to provide a reporting device that corrects and corrects the clock data based on (information).

[0010]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a reporting device according to the present invention provides a notification of abnormality detected by a sensor.
When a line is connected to the receiving device for reporting, a clock correction means is provided for correcting the abnormality occurrence time based on the reference clock information supplied from the receiving device.

Since the notification device according to the present invention is provided with the clock correction means for correcting the abnormality occurrence time based on the reference clock information supplied from the receiving device when the line is connected to the receiving device, the highly accurate reference clock information is provided. With this, it is possible to correct the time when the abnormality has occurred, and to report the exact time when the abnormality has occurred.

Further, the timepiece correction means according to the present invention includes a timepiece storage means for storing an abnormality occurrence time when an abnormality signal is supplied from the sensor, and a reference timepiece storage means for storing reference timepiece information supplied from the receiving device. , Reference clock information and current time
And a correction time calculation means for calculating a correction time from the time, and corrects the abnormality occurrence time based on the corrected time.

The timepiece correction means according to the present invention calculates the correction time from the reference timepiece information and the current time, and corrects the abnormality occurrence time at this correction time. Therefore, the abnormality occurrence time can be accurately determined. Can be specified.

Further, the timepiece correction means according to the present invention is
Of an abnormal signal supplied from the sensor as a trigger, a time measuring means for starting time measurement, a reference time storing means for storing the reference time information supplied from the receiving device, and a reference time information and the time measuring information supplied from the time measuring means. And a correction means for calculating a deviation to determine an abnormality occurrence time .

The clock correction means according to this invention, because it determines the abnormality occurrence time in the deviation between the timing information starts counting an abnormality signal supplied from the reference clock information and the sensor as a trigger, the generated time of the abnormality Can be accurately determined.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the accompanying drawings. In the present invention, the accurate time when the abnormality detected by the sensor is generated is corrected by correcting the abnormality occurrence time of the notification device based on the highly accurate reference clock information of the reception device.

FIG. 1 is a block diagram of an embodiment of a notification system including a notification device according to the present invention. In FIG. 1, a reporting system 1 includes a sensor 2, a reporting device 3,
This notification device 3 and a receiving device 4 such as a monitoring center connected via a communication line 5 are provided.

The sensor 2 is composed of a non-voltage make / break contact sensor, a voltage current / voltage sensor, etc., and when the detection target (for example, the water level of the sewer) is abnormal (abnormal water level), the sensor connection terminal X is used. The abnormal signal Sa is supplied to the notification device 3 via.

The notification device 3 is basically composed of a microprocessor and is composed of a calculation function, a processing function, a memory, etc., and is provided with a sensor determination means 6, a clock correction means 7, and a notification section 8, and an abnormal signal Sa is supplied from the sensor 2. Then, the abnormality information (sensor information) Ja and the abnormality occurrence time Ta are used as report data (abnormality information JA, abnormality occurrence time information TA) to establish a line connection terminal Y.
Notifies the receiving device 4 connected to the line connection terminal Z via the communication line 5.

The sensor determination means 6 is provided with a determination function, a clock, etc., and temporarily stores the abnormality information (sensor information) Ja based on the abnormality signal Sa supplied from the sensor 2, and then the notification unit 8
The time at which the error occurred
The time Ta) and the time data of the current time are supplied to the clock correction means 7.

The clock correction means 7 is composed of a rewritable memory such as a RAM, an arithmetic means, etc., and stores the abnormality occurrence time Ta and the current time Tn.

Further, the timepiece correction means 7, when the notification device 3 is connected to the reception device 4 via the communication line 5 by the activation of the notification part 8, together with the response signal of the reception device 4 from the reference timepiece control means 9. The transmitted reference clock information Tr is stored.

Then, the clock correction means 7 determines the correction time ΔT from the difference between the stored reference clock information Tr and the current time Tn.
(= Tr-Tn) is calculated to quantify how far the clock of the notification device 3 is advanced (or delayed) from the reference clock, and the abnormality occurrence time Ta is set to this correction time ΔT (= Tr-Tn). Abnormality occurred by adding (= ΔT + Ta)
The abnormality occurrence time information TA that accurately specifies the time is stored, and the abnormality occurrence time information TA is supplied to the notification unit 8.

The reporting unit 8 is an NCU (line control unit)
Etc., and when the abnormality information Ja is supplied from the sensor judging means 6, the sensor judging means 6 is automatically connected to the communication line 5, and a preset dial number is automatically transmitted (automatic dialing) to make the reporting device 3 a receiving device. Connect to 4. In addition, the notification unit 8 uses the abnormality information Ja supplied from the sensor determination unit 6 and the abnormality occurrence time information TA supplied from the clock correction unit 7 as notification data (abnormality information JA, abnormality occurrence time information TA) and the communication line 5 To the receiving device 4 via.

The receiving device 4 is provided with a reference clock control means 9, and when responding to a call from the notification device 3, the response signal and the highly accurate reference clock information Tr clocked by the reference clock control means 9 are provided. (For example, hours, minutes, seconds) to the notification device 3 via the communication line 5
To send via.

Further, the receiving device 4 receives the notification data (abnormality information JA, abnormality occurrence time information TA) sent from the notification device 3 after transmitting the reference clock information Tr and stores this notification data. At the same time, a processing procedure for eliminating the abnormality of the detection target is notified based on the notification data.

Thus, the reporting device 3 according to the present invention
Includes the clock correction means 7 that corrects the abnormality occurrence time Ta based on the reference clock information Tr supplied from the reception device 4 when the line is connected to the reception device 4. Therefore, the abnormality is generated by the highly accurate reference clock information Tr. The time Ta can be corrected and the exact time when the abnormality occurs can be reported.

FIG. 2 is a block diagram of the essential parts of one embodiment of the timepiece correction means according to the present invention. In FIG. 2, the timepiece correction means 7 includes a timepiece storage means 11, a reference timepiece storage means 12, and a correction calculation means 13.

The clock storage means 11 is composed of a rewritable memory such as a RAM, stores the abnormality occurrence time Ta which is the time when the abnormality signal Sa is supplied from the sensor 2, and corrects this abnormality occurrence time Ta. The calculation means 13 is provided.

The reference clock storage means 12 is composed of a rewritable memory such as a RAM and stores the reference clock information Tr transmitted from the reference clock control means 9 together with the response signal when the receiving device 4 responds. The reference clock information Tr is provided to the correction calculation means 13.

The correction calculation means 13 has a calculation function and comprises a correction time calculation means 14 and a calculation means 15. The correction time calculation means 14 has a subtraction function, and has the reference clock information Tr provided from the reference clock storage means 12, and the current time Tn provided from the clock (not shown) of the sensor determination means 6 and temporarily stored. Difference ΔT (= Tr−Tn) of
The correction time ΔT (= Tr−Tn) is supplied to the calculation means 15.

The correction time ΔT (= Tr-Tn) is
Reference clock information Tr of a highly accurate clock that the receiving device 4 has
And the current time Tn of the clock with error in the notification device 3
Therefore, it represents a deviation from the accurate time of the clock of the notification device 3. Further, the correction time ΔT is the time correction means 7
And the clock of the notification device 3 is corrected.

The calculation means 15 has an addition function, and the abnormality occurrence time Ta provided from the clock storage means 11 and the correction time ΔT (= Tr− provided from the correction time calculation means 14).
Tn) is added, and the error occurrence time information TA is corrected and corrected.
(= Ta + ΔT) is output to the notification unit 8.

As described above, the timepiece correction means 7 according to the present invention calculates the correction time ΔT (= Tr-Tn) from the reference timepiece information Tr and the current time Tn, and the abnormality occurrence time Ta is calculated at this correction time ΔT. Since the correction is performed, the time when the abnormality occurs can be accurately specified.

In this embodiment, the correction time calculating means 14 corrects the difference from the reference clock information Tr and the current time Tn.
The time ΔT (= Tr−Tn) is calculated, and the calculation means 15 adds the abnormality occurrence time Ta and the correction time ΔT to calculate the abnormality occurrence time.
Although the information TA (= Ta + ΔT) is calculated, the correction time calculating means 14 calculates the correction time ΔT (= Tn−Tr) which is the difference between the current time Tn and the reference clock information Tr, and the calculating means 1
5 in the abnormal occurrence time Ta after subtracting the correction time [Delta] T abnormality occurrence time information TA (= Ta-ΔT) may be configured to calculate a.

FIG. 3 is a flow chart of the time correction processing of the notification device according to the present invention. Note that FIG. 3 also shows transmission / reception between the notification device and the reception device regarding the time processing. First, in step S1, it is determined whether or not the sensor 2 detects the abnormality of the inspection target and supplies the abnormality signal Sa. When the abnormality is detected, the process proceeds to step S2 to detect the abnormality. If not, go back to the start.

In step S2, when the abnormality signal Sa is detected, the sensor information (abnormality information) Ja and the abnormality occurrence time are detected.
And stores the time Ta. The sensor information Ja is stored in the sensor determination means 6, and the abnormality occurrence time Ta is the clock correction means 7.
Is stored in the clock storage means 11.

In step S3, the notification unit 8 activates the notification, supplements the communication line 5, and performs automatic dialing. By the processing operation of step S3, the notification device 3 and the communication line 5
After the electrical connection is established, the reporting device 3 and the receiving device 4 are connected via the communication line 5.

Subsequently, in step S4, the reference clock information Tr transmitted from the receiving device 4 is received and stored in the reference clock storage means 12. In step S4, after the receiving device 4 responds to the call of the notification device 3, the response signal and the reference clock information Tr are transmitted to the notification device 3.

In step S5, the correction time calculating means 14
Calculates the correction time ΔT (= Tr−Tn) which is the difference between the reference clock information Tr and the current time Tn of the notification device 3.

[0041] In step S6, when calculating means 15 is corrected
Time ΔT is added to (= Tr-Tn) abnormal occurrence time Ta,
The corrected (correct) abnormality occurrence time information TA is calculated and supplied to the notification unit 8.

In step S7, the notification unit 8 transmits the sensor information JA and the abnormality occurrence time information TA to the receiving device 4 as notification data. By the processing of step S7, the sensor information JA and the abnormality occurrence time information TA are transferred to the communication line 5
The error notification device 3 received by the receiving device 4 via the
The abnormality occurrence time Ta clocked by the clock is corrected with the accurate reference clock information Tr of the clock of the receiving device 4, and the accurate abnormality occurrence time information TA is notified to the receiving device 4.

FIG. 4 is a block diagram of the essential parts of another embodiment of the timepiece correction means according to the present invention. In FIG. 4, the timepiece correction means 17 includes a reference timepiece storage means 12 and a timekeeping means 1.
8 and the correction means 19 are provided.

The reference clock storage means 12 is composed of a rewritable memory such as a RAM, and stores the reference clock information Tr transmitted from the reference clock control means 9 together with the response signal when the receiving device 4 responds. The reference clock information Tr is provided to the correction means 19.

The time measuring means 18 is composed of, for example, a timer that measures time in seconds, starts the time measurement by using the abnormal signal Sa from the sensor 2 as a trigger, and indicates the elapsed time after the occurrence of the abnormal condition by the timer signal Tm (time measuring information). ) And the reference clock storage means 1
The reference clock information Tr is supplied to the correction means 19 at the timing when the reference clock information Tr is output from 2.

The correction means 19 has a subtraction function, and the difference δT between the reference clock information Tr provided from the reference clock storage means 12 and the timer signal Tm supplied from the time counting means 18.
(= Tr−Tm) is calculated, and abnormality occurrence time information TA (=
δT) is output to the reporting unit 8.

ΔT (= Tr-Tm) is the abnormal signal Sa,
That is, since the time counted by the timer (timer signal Tm) from the time when the abnormality occurs is the value obtained by subtracting from the reference clock information Tr, the abnormality occurrence time information TA where the abnormality occurs can be accurately determined.

This means that while the clock of the notification device 3 causes a large error while a long time has passed, the error of the timer in seconds which starts time counting after an abnormality occurs is as follows.
This is because the short time (second level) until the reference clock information Tr is received is extremely small.

As described above, the timepiece correction means 17 according to the present invention deviates from the reference timepiece information Tr and the timekeeping information (timer signal Tm) for starting the timekeeping triggered by the abnormal signal Sa supplied from the sensor 2 by δT ( = Tr-Tm), the abnormality occurrence time information TA is determined, so that the time when the abnormality occurs can be accurately determined.

[0050]

As described above, the notification device according to the present invention includes the clock correction means for correcting the abnormality occurrence time based on the reference clock information supplied from the receiving device when the line is connected to the receiving device. since, accurate abnormality occurrence time can be corrected by high standards clock information, even if there is an error in the clock of the notification apparatus can be Problem with exact time that occurrence of abnormal. Since it is not necessary to adjust the clocks of many reporting devices only by adjusting the clocks of the receiving device, the complexity of time adjustment of the entire reporting device can be eliminated.

Further, since the timepiece correction means according to the present invention calculates the correction time from the reference timepiece information and the current time and corrects the abnormality occurrence time with this correction time , even if the error of the timepiece of the notification device is large. , It is possible to accurately specify the time when the abnormality occurs.

Further, the timepiece correction means according to the present invention is
Since the abnormality occurrence time is determined by the deviation between the reference clock information and the timing information that starts timing with the abnormality signal supplied from the sensor as a trigger, the abnormality occurs regardless of the error of the clock of the notification device. The time can be accurately determined.

[Brief description of drawings]

FIG. 1 is a block diagram of an embodiment of a notification system including a notification device according to the present invention.

FIG. 2 is a block configuration diagram of a main part of an embodiment of a timepiece correction means according to the present invention.

FIG. 3 is a time correction processing flowchart of the notification device according to the present invention.

FIG. 4 is a block diagram of the main part of another embodiment of the timepiece correction means according to the present invention.

[Explanation of symbols]

1 reporting system 2 sensors 3 reporting devices 4 Receiver 5 communication lines 6 sensor determination means 7,17 Clock correction means 8 reporting department 9 Reference clock control means 11 Clock storage means 12 Reference clock storage means 13 Correction calculation means 14 Correction time calculation means 15 Calculation means 18 Timekeeping means 19 Correction means

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI H04Q 9/00 301 H04Q 9/00 301B 311 311K (56) Reference JP-A-11-250380 (JP, A) JP-A-7 -111542 (JP, A) JP 5-130256 (JP, A) JP 7-281732 (JP, A) JP 62-285199 (JP, A) JP 10-260721 (JP, A) ) JP-A-5-316578 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) G08B 25/00 H04B 1/04 H04B 17/00 H04M 11/00 H04Q 9/00 G05B 23 / 02

Claims (3)

(57) [Claims] 1. A standard time is provided with a standard timepiece control means (9).
It is connected to a receiving device (4) that supplies total information, and automatically generates abnormality information based on the abnormality signal supplied from the sensor (2) and abnormality occurrence time information based on a built-in clock on the communication line (5). In the notification device (3) that notifies the reception device (4) via the notification device (3), the notification device (3) reports the abnormality detected by the sensor (2).
At the time of line connection with the receiving device (4) for reporting, clock correction means (7 , 17 ) for correcting the abnormality occurrence time based on the reference clock information supplied from the receiving device (4) is provided , A reporting device, which reports the time of occurrence of the abnormality that has occurred . 2. The timepiece correction means (7) is supplied from a timepiece storage means (11) for storing an abnormality occurrence time when an abnormality signal is supplied from the sensor (2) and the receiving device (4). Reference clock storage means (1 for storing reference clock information
2. The method according to claim 1, further comprising: 2) and a correction calculation means (13) for calculating a correction time from the reference clock information and the current time, and correcting the abnormality occurrence time based on the correction time . Notification device. 3. The timepiece correction means (17) is a timekeeping means (18) for starting timekeeping triggered by an abnormal signal supplied from the sensor (2), and a reference supplied from the receiving device (4). A reference clock storage means (12) for storing clock information, and a correction means (19) for calculating an error occurrence time by calculating a deviation between the reference clock information and the clock information supplied from the clock means. The notification device according to claim 1, wherein: