JPH0936970A - Automatic reporting system device - Google Patents

Abstract

(57) [Abstract] [Purpose] Calling data from a center using a general ringing bell to enable automatic data communication by calling individual automatic notification devices installed on multiple telephone lines. . A bell detection circuit 11 that detects a bell ringing signal of a user's telephone 7, an off-hook detection circuit 26 that detects that the telephone 7 is off-hook, and the telephone 7 is connected when the number of times the bell ringing signal is detected matches a set value. Telephone line 1
Communication from the relay drive circuit 25 / relay switch 24 that connects the automatic notification device 1 and the telephone line 10 by disconnecting from 0, the function of counting the number of times the bell ringing signal is detected, the function of setting the bell ringing signal detection frequency set value, and the communication It is assumed that the storage operation device 27 having a function of increasing the bell call signal detection frequency set value for a certain period after the end is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention automatically transmits information of an automatic notification device side such as meter value and sensor information to a centralized monitoring center side through a telephone line network when activated by a terminal side. The present invention relates to an automatic notification system device having a mutual activation type automatic notification device capable of calling the automatic notification device by side activation and performing data loading and the like.

[0002]

2. Description of the Related Art Conventionally, in an automatic notification system device using a general subscriber telephone line, when calling an automatic notification device from a centralized monitoring center, a no ringing trunk is used to ring the bell of a telephone at home. Without calling the target automatic notification device without using the ringing trunk and calling the automatic notification device by ringing the bell of the telephone without using a ringing trunk (hereinafter called the ringing method) was there.

The no-ringing system is a special service realized by adding a no-ringing trunk (hereinafter referred to as NRT) having a special function to a telephone exchange, which is 16 Hz.
Without using the bell signal, the data is transmitted by specifying the target automatic alerting device by the no-ringing call signal (1 digit PB signal) in the half-loop state with gentle polarity inversion. As a known example, JP-A-2-
There is Japanese Patent No. 70165 (terminal device of network control device).

[0004] In addition, as an example of a ringing method for calling a target automatic notification device without using an NRT, 16H
An identification signal indicating that data communication is performed within a certain time after automatically responding to the z-bell signal, or a data communication terminal is connected to a line on which an incoming call is detected when a carrier signal is detected. A well-known example of this is disclosed in
-2282 (communication system in telephone line) is available, and when a target signal cannot be detected, a 16 Hz bell signal is sent to a voice communication terminal (telephone) and a call is made at the same time. There is a system that selects the home telephone and the data communication terminal by sending a ring back tone or a message indicating that the telephone is being called to the other side. As an example, there is JP-A-2-7763 (image communication device).

[0005]

The no-ringing method is not always available for all telephone lines, and the NRT
If an automatic notification device is installed on a line where the automatic notification device is not installed or on the extension side of the PBX, the automatic notification device cannot be called, and the installation operation of the automatic notification device is restricted.

In addition, if the NRT of the telephone exchange in which the target automatic notification device is housed is used for a long time for continuous meter reading by another business operator, the automatic notification device cannot be called.

This busy state is inconvenient especially when an emergency operation from the center to the automatic notification device is desired.

Therefore, it is also possible to use a method of ringing the bell of the telephone by the usual dialing method, the automatic notification device detecting this bell signal and making an automatic response, and performing data communication between the automatic notification device and the center. It would be convenient.

However, when calling by ringing, it is not possible to call individually the automatic notification devices connected to a plurality of telephone lines as in the method of using the individual calling function of no ringing communication.

[0010]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems of the prior art by calling an automatic notification device connected to a single telephone line on the user side from the center by ringing and individually transmitting data. The object is to provide an automatic notification system device that can be used.

That is, information such as meters and sensors is automatically transmitted to the centralized monitoring center via the telephone line network when activated on the terminal side, and data is transmitted via the telephone line network when activated from the centralized monitoring center side. Mutual activation type automatic notification device that can transmit, bell detection circuit that detects a bell ringing signal that calls the automatic notification device, line current detection circuit that detects off-hook of the telephone, and disconnects the telephone from the subscriber telephone line A memory having a relay switch, a function of counting the number of times the bell ringing signal is detected, a function of setting the count value of the number of times the bell ringing signal is detected, and a function of switching the relay switch to communicate when the bell ringing signal is detected a prescribed number of times. Equipped with an arithmetic unit, and changes the count value of the bell ringing signal detection time for a certain period after communication is completed. And it shall be controlled to.

[0012]

According to the present invention, as described above, the bell detection circuit for detecting the bell ringing signal of the user's telephone, the line current detection circuit for detecting that the telephone is off-hook, and the number of times the bell ringing signal is detected are set. If it matches, disconnect the telephone from the telephone line and connect the automatic notification device to the telephone line, a function to count the number of times the bell ringing signal is detected, a function to set the number of times the bell ringing signal is detected, and after communication is complete. By providing a memory operation unit that has the function of increasing the number of times the bell ringing signal is detected for a certain period of time, when the ringing signal matches the set value, the telephone is disconnected from the telephone line and the automatic notification device and the telephone line are connected. Data communication is performed, and control is performed to increase the bell ringing signal detection count set value for a certain period after the end.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a system diagram of an automatic notification system device showing an embodiment of the present invention, FIG. 2 is a block diagram showing the configuration of the automatic notification system device, and FIG. 3 is a flow chart diagram of the automatic notification system device. .

In FIG. 1, 1 is an automatic notification device,
It is connected via a telephone network 3 and a subscriber telephone line 10 to a centralized monitoring center 2 for managing various information signals on the terminal side.

The center side exchange 4 accommodates the centralized monitoring center 2. The automatic notification device-side exchange 5 includes the automatic notification device 1
And no ringing trunk (NRT) 6
Is added to the central monitoring center 2 so that the automatic notification device 1 can be called by dialing from the centralized monitoring center 2 to the NRT 6 in a procedure according to the no ringing system. The telephone network 3 is composed of the NRT) 6.

Reference numeral 7 denotes a telephone, which is connected to the subscriber telephone line 10 via the automatic notification device 1.

Reference numeral 8 is a meter for measuring the usage amount of water, electric power, etc., which is connected to the above-mentioned automatic notification device 1 and outputs a pulse signal corresponding to each usage amount, or the automatic notification device. 1 has a function of performing data communication with

Reference numeral 9 denotes a sensor, which detects a change in state of a certain event such as gas, liquid level, push button, etc., and is connected to the automatic notification device 1 to provide a signal corresponding to each state change. Has the function of outputting.

In FIG. 2, reference numeral 27 is a storage arithmetic device, which controls the operation of the automatic notification device 1 according to a preset and stored procedure.

Reference numeral 11 denotes a bell detection circuit for detecting a 16 Hz bell signal, which is connected between the subscriber's telephone line 10 and the storage / calculation device 27, and is connected from the telephone line network 3 when an incoming call is received. It has a function of detecting a bell signal of 16 Hz which is sent out and transmitting it to the storage arithmetic unit 27.

Reference numeral 12 denotes a slow polarity inversion detection circuit which is inserted into the subscriber telephone line 10 and is connected to the storage arithmetic unit 27, and the NRT 6 operates to loosen the subscriber telephone line 10. It has a function of detecting that the polarity inversion has occurred and transmitting it to the storage operation device 27.

Reference numeral 13 is a line current detection circuit, which is inserted into the subscriber telephone line 10 and is connected to the storage arithmetic unit 27, and the telephone 7 is sent out from the telephone line network 3 at 16 Hz. When the line is closed in response to a bell signal, it has a function of detecting the line current flowing through the subscriber telephone line 10 and transmitting it to the storage arithmetic unit 27.

Reference numerals 14 and 15 respectively denote a capacitor and a transformer, and a transformer 1 is provided between the subscriber telephone lines 10.
5 primary windings are connected, and the capacitor 14 is connected to one of the primary windings.

The capacitor 14 insulates direct current and the transformer 15 has high alternating current impedance, so that a signal is sent to the PB signal detection circuit 16 described later without affecting the communication state of the subscriber telephone line 10. It is an interface circuit that transmits.

Reference numeral 16 is a PB signal detection circuit, one end of which is connected to the secondary winding of the transformer 15 and the other end of which is connected to the storage arithmetic unit 27, and which is connected to the subscriber telephone line 10. A circuit for detecting and discriminating the transmitted PB signal and transmitting it to the above-mentioned storage arithmetic unit 27,
For example, a circuit using a PB signal receiver LSI is used.

Reference numeral 17 denotes a rectifying circuit, which is a half-loop circuit 18 described later even if the polarity of the subscriber telephone line 10 is reversed.
It also has a function of supplying a constant polarity to the DC closed circuit 20.

Reference numeral 18 is a half-loop circuit, which is connected to the subscriber telephone line 10 through the rectifying circuit 17 and is also connected to the storage arithmetic unit 27 and an AC 600Ω switch 19 described later. The half loop circuit 18 is
It is a circuit for responding in a procedure conforming to the no ringing system, and 5 mA or more 2
It has a function of making the subscriber telephone line 10 semi-closed with a DC resistance value of 4 KΩ or more when a line current of 0 mA or less is applied.

Reference numeral 21 denotes a 600Ω transformer, one end of the primary winding of which is connected to an AC 600Ω switch 19 and a DC closing circuit 20 which will be described later, and the other end of which is connected through the rectifying circuit 17 to the subscriber. It is connected to the telephone line 10. On the other hand, the secondary winding is connected to a PB signal transmission circuit 22 and a signal modulation / demodulation circuit 23, which will be described later.

The primary winding of the 600Ω transformer 21 is 50Ω
It has a DC resistance of about 100 Ω and an AC impedance of 600 Ω in a frequency band of 300 Hz to 4 KHz, and has a primary: 2
The next turns ratio is a 1: 1 transformer, which transmits signals from a PB signal sending circuit 22 and a signal modulating / demodulating circuit 23, which will be described later, in a 600Ω balanced state with the subscriber telephone line 10.
It has a function of galvanically isolating the subscriber telephone line 10 and a circuit connected to the secondary side of the transformer.

Reference numeral 19 denotes an AC 600Ω switch, which is connected to one end of the primary winding of the half-loop circuit 18 and the 600Ω transformer 21, and is further connected to the storage arithmetic unit 27.

The AC 600Ω switch 19 is a switch for connecting the above-mentioned 600Ω transformer 21 in an AC manner when the half-loop circuit 18 makes the line in a DC semi-closed state, and is controlled by the above-mentioned storage arithmetic unit 27.

The DC closing circuit 20 has one end connected to the subscriber telephone line 10 via the rectifying circuit 17, and the other end connected to one end of the primary winding of the 600Ω transformer 21. , Is also connected to the above-mentioned storage arithmetic unit 27.

The DC closing circuit 20 is the memory computing device 27 described above.
Is a switch which is turned on / off under the control of the above. When turned on, the subscriber telephone line 10 is rectified by the rectifier circuit 17 and the DC resistance of the 600Ω transformer 21 is 50Ω to 100Ω.
The subscriber telephone line 10 can be put into a talking state by making a balanced state with an AC impedance of 600Ω and closed when it is turned off.

Further, it also has a function of sending a dial pulse signal by turning on / off at an appropriate timing under the control of the storage arithmetic unit 27.

Reference numeral 22 is a PB transmission circuit, which has the aforementioned 600Ω.
A circuit that is connected between the secondary winding of the transformer 21 and the above-mentioned storage / calculation device 27, and that outputs the PB signal via the 600Ω transformer 21 under the control of the above-mentioned storage / calculation device 27. It has a function of transmitting a PB signal of the ANS signal "#" in accordance with a procedure of transmission or an incoming call conforming to the no ringing method, and also transmitting data using the PB signal.

Reference numeral 23 is a signal modulation / demodulation circuit, which is the above-mentioned 600.
It is connected between the secondary winding of the Ω transformer 21 and the above-mentioned storage operation device 27.

The signal modulation / demodulation circuit 23 performs data communication with the centralized monitoring center 2 via the 600Ω transformer 21, the rectifier circuit 17, the subscriber telephone line 10 and the telephone line network 3 under the control of the above-mentioned storage arithmetic unit 27. For example, a circuit using a full-duplex modem LSI of FSK signal system is used.

Reference numeral 24 is a relay switch for switching the telephone 7 from the subscriber telephone line 10 side to the later-described off-hook detection circuit 26 side of the automatic notification device 1 when the automatic notification device 1 is communicating.

Reference numeral 25 is a relay driving circuit, the output side of which is connected to the relay switch 24 and the input side of which is connected to the storage operation device 27, and the storage operation device 27 controls the relay switch 24 to switch the switches. This is the circuit.

Reference numeral 26 denotes an off-hook detection circuit, the input side of which is a relay contact 26 described later, and the output side of which is the storage arithmetic unit 2
7 is a circuit for detecting the off-hook of the telephone 7 when the automatic notification device 1 is communicating and the telephone 7 is switched to the off-hook detection circuit 26 side according to an instruction from the memory computing device 27. .

Reference numeral 28 denotes a meter interface circuit, which is connected between the meter 8 and the memory operation device 27, receives a pulse signal from the meter 8,
Alternatively, it has a function of communicating with the meter 8 and transmitting it to the above-mentioned storage arithmetic unit 27.

Reference numeral 29 denotes a sensor interface circuit, which is connected between the sensor 9 and the memory processing unit 27, receives a signal from the sensor 9, and transmits this signal to the memory processing unit 27. It is a circuit having a function.

A data registration interface circuit 30 includes a data registration device 32, which will be described later, and the storage operation device 27.
Is a circuit which is connected between the data storage device 32 and the data registration device 32 and has a function of transmitting the data to the storage operation device 27.

Reference numeral 31 denotes a connector, which is connected between a data registration device 32 described later and the data registration interface circuit 30 described later. The connector 31 can be freely attached to and detached from the data registration device 32 described later and the automatic notification device 1. It has a function to perform.

Reference numeral 32 denotes a data registration device, which is connected to the automatic notification device 1 to register, store and change data for performing its operation.

For example, in addition to the telephone number of the centralized monitoring center 2 and the user code of the automatic notification device 1 described above, an NRS signal ("0-9" for selecting the automatic notification device 1 when an incoming call is received by the no ringing method. Is a device for registering, storing, and changing the ringing method bell ringing signal detection frequency set value, and can be detachably attached to the automatic notification device 1 by the connector 31. I can.

Next, the subscriber telephone line 1 to which the automatic notification device 1 is connected will be described with reference to FIGS. 2 and 3 and 4 of this embodiment.
The operation when 0 arrives will be described.

First, at A1, an incoming call is detected by monitoring occurrence of polarity reversal in the subscriber telephone line 10.

Here, the polarity inversion is slow polarity inversion detection circuit 1
When the detection is made by 2, the timer of 350 mS is started at A2 and A3, the half loop circuit 18 is closed, and a response is made to the polarity inversion detection.

Then, in the flow of A4-A5-A4, 35
Within 0 mS, the NRT 6 shown in FIG. 1 transmits an NRS signal, which is a one-digit PB signal of "0 to 9", to the subscriber telephone line 10 or P via the capacitor 14 and the transformer 15.
Monitoring is performed by the B signal detection circuit 16.

At this time, if the NRS signal can be detected within 350 mS, it is determined that the incoming call is based on the no-ringing method, and the processing after A6 which is a response procedure based on the no-ringing method is executed.

On the contrary, when the NRS signal cannot be detected within 350 mS, it is judged that the incoming call is based on the ringing method, and the processing after B1 which is a response procedure based on the ringing method is executed.

If it is assumed that the NRS signal can be detected within 350 mS, it is determined whether the NRS signal detected at A6 matches the NRS signal stored and registered in the storage operation device 27 by the data registration device 32 in advance. I do.

If the NRS signals do not match, it is determined that the automatic notification device 1 has not been selected, and the process jumps to A12 to open the half closed state of the half loop circuit 18 and end the series of operations. .

If the NRS signals match, the AC 600Ω switch 19 is turned on at A7 to turn on the subscriber telephone line 1.
An AC impedance of 0 is balanced by 600Ω, and the ANS signal (PB signal “#”) of the response signal, which is a response procedure based on the no ringing method, is sent from the PB signal transmission circuit 22 at A8.
1 is transmitted to the NRT 6 in FIG. 1 via the above-mentioned 600Ω transformer 21, AC600Ω switch 19, half-loop circuit 18, rectifier circuit 17, and subscriber telephone line 10.

Next, in the flow of A9-A10-A9, the signal modulation / demodulation circuit 23 causes the aforementioned 600Ω transformer 21, A
It communicates with the centralized monitoring center 2 via the C600Ω switch 19, the half loop circuit 18, the rectifier circuit 17, the subscriber telephone line 10, and the telephone network 3.

When the communication is completed, the AC 600Ω switch 19 and the half loop circuit 18 are opened to complete the series of operations, and the operation becomes A11-A12-END.

The processing when the call arrives by the no ringing method has been described above.

Next, a case where an incoming call is received by the ringing method will be described.

When an incoming call is received by the ringing method, A4-A
Since the NRS signal cannot be detected within 350 ms in 5-A4, the processing in B1 to B20 is performed thereafter.

At B1, the half-loop circuit 18 is opened, and the incoming procedure by the no ringing method is completed.

At B2, the bell timer is started. The bell timer is a limit timer for terminating the ringing-type incoming call procedure when the bell does not ring for a set time or longer.

Next, B3-B4-B5-B6-B7-B
8-While the bell is ringing intermittently in the flow of B3 is monitored by the bell detection circuit 11 and the number of ringing of the bell is counted at B4, and the telephone 7 is off-hook to the subscriber telephone line 10. The line current detection circuit 13 monitors whether the line current flows.

If the bell stops before responding, the bell timer is timed up in the processing of B3-B6-B7-B8-B3, and the procedure becomes B6-END and the response procedure ends.

Next, when the telephone 7 responds to the bell and a line current flows, B7-END is established and the response procedure is terminated.

At B8, it is judged whether or not the number of times of ringing the bell n and the preset value C match, and n and c
If they match, the relay drive circuit 25 is operated so as to disconnect the telephone 7 from the telephone line 10 at B9, the DC closing circuit 20 is turned on, and the signal modulation / demodulation circuit 2 at B10 and B11.
3 communicates with the central monitoring center 2 via the 600Ω transformer 21, the DC closing circuit 20, the rectifying circuit 17, the subscriber telephone line 10, and the telephone line network 3. When the communication is completed, the bell ringing setting number c is increased for a fixed time T1 at B13, and the relay switch is switched at B14 and B15 to open the DC circuit and complete.

The preset setting value c is the automatic notification device 1
When a plurality of units are connected, for example, when three units are installed, the first unit is 3 times, the second unit is 4 times, and the third unit is 5 times.

Therefore, when the center 2 communicates with the third automatic notification device 1, the telephone number is dialed to the telephone line installed in the automatic notification device 1. When there is an incoming call to the bell, the first one answers first, so the communication is terminated for the time being, and when the call is made again, the first one rings the number of times the bell rings.
Since the second unit will respond, this time the second unit will respond and terminate the communication in the same way.If you make a call, the number of ringing ring settings for both the first and second units will increase, so this time the third unit will respond. Here, data communication with A3 can be performed.

[0070]

As described above, according to the present invention, a central monitoring center makes a call to an automatic notification device connected to a plurality of telephone lines to detect a bell ringing signal, and the number of times the bell signal is detected is the set number of times. The matched automatic notification device responds, and data communication with the center is possible.

Since the set value of the number of times of bell detection is increased for a fixed time after the end of communication, if the dial is continuously made from the center, the automatic notification device of the set value of the number of times of next bell signal detection can respond.

In this way, it is possible to provide an automatic notification system device capable of calling a target automatic notification device by bell call and performing data communication without using the no-ringing communication service.

[Brief description of drawings]

FIG. 1 is a system configuration diagram of an automatic notification system device showing an embodiment of the present invention.

FIG. 2 is a block diagram of an automatic notification system device showing an embodiment of the present invention.

FIG. 3 is an operation flowchart of an automatic notification system device showing an embodiment of the present invention.

FIG. 4 is an operation flowchart of an automatic notification system device showing an embodiment of the present invention.

[Explanation of symbols]

 1 Automatic reporting device 2 Centralized monitoring center 3 Telephone line network 6 No ringing trunk (NRT) 7 Telephone 8 Meter 9 Sensor 10 Subscriber telephone line 11 Bell detection circuit 24 Relay switch 25 Relay drive circuit 26 Off-hook detection circuit 27 Memory operation device

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Junichi Shimizu 1 3-3 Shinjuyo, Kashiwa City, Chiba Prefecture

Claims (3)

[Claims] 1. Information of a meter (8), a sensor (9), etc. is automatically transmitted to a centralized monitoring center (2) via a telephone line network (3) upon activation by a terminal side, and the centralized monitoring center ( 2) Mutual activation type automatic notification device (1) capable of transmitting data through the telephone line network (3) by activation from the side
A bell detection circuit (11) for detecting a bell ringing signal for calling the automatic notification device (1), a line current detection circuit (13) for detecting an off-hook of the telephone (7), and the telephone (7). The relay switch (24) for disconnecting from the operator's telephone line (10) and the storage operation device (27) having a function of switching the relay switch (24) to communicate when a bell ringing signal is detected a prescribed number of times are provided, and the communication ends. Then, the automatic notification system device is characterized by controlling so as to change the detection count value of the bell ringing signal for a certain period of time. 2. The storage arithmetic unit (27) has a function of counting the number of times the bell ringing signal is detected, and is controlled so as to change the count value of the number of times the bell ringing signal is detected for a certain period of time after communication is completed. The automatic notification system device according to claim 1, wherein: 3. The storage arithmetic unit (27) has a function of setting the count value of the number of times the bell ringing signal is detected, and is controlled to change the count value of the number of times the bell ringing signal is detected for a certain period of time after communication is completed. The automatic notification system device according to claim 1, wherein: