JPH0964991A - 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. . [Structure] Information of a meter 8 and a sensor 9 is automatically transmitted to a centralized monitoring center 2 via a telephone line network 3 upon activation of a terminal side, and the telephone line network 3 is activated by activation from the centralized monitoring center 2 side. In the automatic notification system device including the mutual activation type automatic notification device 1 capable of transmitting data via the subscriber telephone line 10, a bell detection circuit 11 for detecting a bell ringing signal for calling the automatic notification device 1 and a telephone 7 are provided. A line current detection circuit 13 that detects an off-hook, a relay switch 24 that disconnects the telephone 7 from the subscriber telephone line 10, a function that counts the number of times the bell ringing signal is detected, and a bell ringing signal detection frequency count value It has a setting function, and if the number of times the bell ringing signal is detected matches the set value, after a certain period of time, the centralized monitoring center 2 activates the data on the terminal side to activate the data. Data transmission is controlled.

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 an automatic notification device by side activation and performing data loading or 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.

[0003] 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.
The data communication is performed by using the ringing ringing signal (1 digit of PB signal) to specify the target automatic reporting device in the slow loop inversion and half-loop state without using the Hz bell signal.
As a publicly known example of an automatic notification device using this, Japanese Patent Laid-Open No. HEI-2
Japanese Patent Publication No.-70165 (a terminal device of a network control device) is generally known.

[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.

The present invention solves the above-mentioned conventional problems, and provides an automatic notification system device capable of calling individual ringing from the center of an automatic notification device connected to one telephone line on the user side and individually transmitting data. The purpose is to do.

[0010]

The present invention has the following means for solving the above problems.

Information such as meters and sensors is automatically transmitted to the centralized monitoring center via the telephone line network when the terminal side is activated, and the centralized monitoring center side activates the telephone line network and the subscriber telephone line. In an automatic notification system device having a mutual activation type automatic notification device capable of transmitting data via a bell, a bell detection circuit for detecting a bell ringing signal for calling the automatic notification device, a line current detection circuit for detecting an off-hook of a telephone, and A relay switch for disconnecting the telephone from the subscriber's telephone line, a function for counting the number of times the bell ringing signal is detected, and a function for setting the bell ringing signal detection frequency count value, and the bell ringing signal detection frequency being set If they match, after a certain period of time, the centralized monitoring center is controlled so that data is transmitted by activating the terminal.

[0012]

According to the present invention, with the above configuration, a bell detection circuit for detecting a bell ringing signal of a user's telephone, a function for counting the number of times the bell ringing signal is detected, and a function for detecting that the telephone is off-hook are provided. When the number of times the bell call signal is detected matches the set value, the automatic notification device is activated after a certain period of time to automatically call the center and perform data transmission in response to the center.

[0013]

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

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

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, and a call is sent from the centralized monitoring center 2 to the NRT 6 in accordance with a procedure according to the no-ringing method.

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 of water, electric power, etc., which is connected to the automatic reporting device 1 to output a pulse signal according to the usage or to carry out the automatic reporting. It has a function of performing data communication with the device 1.

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 operation device, which controls the operation of the automatic notification device 1 according to a preset and stored procedure.

Reference numeral 11 is a bell detection circuit for detecting a 16 Hz bell signal, which is connected between the subscriber's telephone line 10 and the storage arithmetic unit 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's telephone line 10 and is also connected to the storage arithmetic unit 27. 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, which are provided between the subscriber telephone line 10 and the transformer 1.
5 primary windings are connected, and the capacitor 14 is connected to one of the primary windings.

The capacitor 14 insulates the direct current and the transformer 15 has a high alternating current impedance so that the 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 denotes 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, respectively. Is a circuit for detecting and discriminating the PB signal transmitted to the storage arithmetic unit 27, and 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 closing circuit 19.

The half-loop circuit 18 is connected to the subscriber telephone line 10 through the rectifying circuit 17, and
It is also connected to the storage operation device 27 and an AC 600Ω switch 19 described later.

The half-loop circuit 18 is a circuit for responding in a procedure conforming to the no-ringing system, and a DC resistance value of 4 KΩ or more when a line current of 5 mA or more and 20 mA or less is flowed under the control of the storage arithmetic unit 27. And has a function of making the subscriber telephone line 10 semi-closed.

Reference numeral 21 is a 600 Ω transformer, one end of the primary winding is connected to each of an AC 600 Ω switch 19 and a DC closing circuit 20 which will be described later, and the other end is connected through the rectifying circuit 17 to the subscriber telephone. It is connected to the line 10.

The secondary winding is a PB signal transmission circuit 22 which will be described later.
And the signal modulation / demodulation circuit 23, respectively.

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, and a PB signal transmission circuit 2 described later in a state of being balanced with the above-mentioned subscriber's telephone line 10 by 600Ω.
2 and the signal of the signal modulation / demodulation circuit 23, and has a function of galvanically isolating the subscriber telephone line 10 and the 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 described above, 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 is in a DC half-closed state of the line, and is controlled by the storage arithmetic unit 27.

The DC closing circuit 20 has one end connected to the subscriber telephone line 10 via the rectifier circuit 17 and the other end connected to one end of the primary winding of the 600Ω transformer 21. At the same time, it is also connected to the storage operation device 27.

The DC closing circuit 20 is the above-mentioned storage arithmetic unit 27.
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.

The PB sending circuit 22 is connected between the secondary winding of the 600Ω transformer 21 and the storage arithmetic unit 27, and is controlled by the storage arithmetic unit 27 to control the above-mentioned 60.
A circuit that outputs a PB signal via a 0Ω transformer 21. In addition to transmitting a PB dial signal and a PB signal of an ANS signal “#” in an incoming procedure conforming to a no ringing method, it also transmits data using the PB signal. Has the function of performing.

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 / calculation device 27.

The signal modulation / demodulation circuit 23 performs data communication with the centralized monitoring center 2 through 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.

The output side of the relay drive circuit 25 is connected to the relay switch 24 described above, and the input side thereof is connected to the storage arithmetic unit 27. The storage arithmetic unit 27 controls the relay switch 24 to switch the switches. This is the circuit.

An off-hook detection circuit 26 has an input side connected to a relay contact 26, which will be described later, and an output side connected to the storage arithmetic unit 27, respectively.
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.

Reference numeral 28 denotes a meter interface circuit, which is connected between the meter 8 and the storage 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 is a sensor interface circuit,
It is a circuit that is connected between the sensor 9 and the storage operation device 27, and has a function of receiving a signal from the sensor 9 and transmitting this signal to the storage operation device 27.

A data registration interface circuit 30 includes a data registration device 32 described later and the storage operation device 27.
Connected between the two, the data from the data registration device 32 is taken in, and this data is stored in the storage operation device 2 described above.
7 is a circuit having a function of transmitting the signal.

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, and this connector 31 allows the data registration device 32 described later and the automatic notification device 1 to be freely attached and detached. It has a function to make it.

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 10 to which the automatic notification device 1 is connected will be described with reference to FIGS. 2, 3 and 4 of this embodiment.
The operation when there is an incoming call is explained.

First, at A1, an incoming call is detected by monitoring the 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. .

When 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,
Communication is performed with the central monitoring center 2 through the AC 600Ω switch 19, the half loop circuit 18, the rectifying circuit 17, the subscriber telephone line 10, and the telephone line 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. It becomes A11-A12-END.

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

Next, description will be made regarding the case where an incoming call is received by the ringing method.

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 according to 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 n of bell rings and the preset value C match, and n and c are determined.
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 at B10 and B11, the signal modulation / demodulation circuit 23 causes the 600Ω transformer 21 and the DC closing. Communication is performed with the centralized monitoring center 2 via the connection circuit 20, the rectifying circuit 17, the subscriber telephone line 10, and the telephone line network 3.

When the communication is completed, B13 is set for a predetermined time T1.
During this period, the bell ringing setting number c is increased, and B14,
At B15, the relay switch 24 is switched to open the DC circuit, and the process ends.

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 communicating with the third automatic notification device 1 from the center, the center 2 calls the dial number of the telephone line installed by the automatic notification device 1, and when the bell rings five times. When the telephone is hung up, since the measured value of the number of times the bell rings and the set value match, the third automatic notification device 1 automatically dials the center after a fixed time and performs data communication by the response of the center.

[0073]

As described above, according to the present invention, the centralized monitoring center makes a call to the automatic notification device connected to a plurality of telephone lines, and the bell ringing tone is controlled to ring a predetermined number of times to hang up.

The automatic notification device detects the bell ringing signal, and the number of times the bell signal is detected matches the set number. The automatic notification device automatically dials the center after a fixed time after the bell stops, and data communication with the center is made in response to the center. I do.

As described above, even if the no-ringing communication service is not used, an ordinary automatic call device can be called and data communication can be performed by calling a normal bell from the center and controlling the number of times of calling the bell. A reporting device can be provided.

[Brief description of drawings]

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

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

[Explanation of symbols]

 1 Automatic Notification Device 2 Central Monitoring Center 3 Telephone Line Network 6 No Ringing Trunk (NRT) 7 Telephone 8 Meter 9 Sensor 10 Telephone Line 11 Bell Detection Circuit 13 Line Current Detection Circuit 24 Relay Switch

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

Claims (1)

[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) An automatic notification system device comprising a mutual activation type automatic notification device (1) capable of transmitting data through the telephone line network (3) and a subscriber telephone line (10) when activated from the side. Bell detection circuit (11) for detecting a bell ringing signal for calling (1), and telephone (7)
A line current detection circuit (13) for detecting off-hook of
A relay switch (24) for disconnecting the telephone (7) from the subscriber telephone line (10), a function for counting the number of times the bell ringing signal is detected, and a function for setting the bell ringing signal detection frequency count value. An automatic notification system device, characterized in that, when the number of times of detection of a ringing signal coincides with a set value, the centralized monitoring center (2) is controlled to transmit data by activating the terminal side after a fixed time.