KR950010495B1 - A housing information transmmision system - Google Patents

Abstract

The system is realized by restoring a telephone line automatically to inform various housing information to a notice destination when it is required to inform the various house information to the notice destination and even when a permanent call causes the telephone line to be in a high and dry state. The system comprises: a telephone(2) capable of communication with a different telephone through the telephone line; an information notice circuit(11) converting the various housing information to a housing information signal and informing it to the notice destination through the telephone line; a switching means switching the telephone line from the telephone to the information notice circuit(11); a line voltage detection circuit(17) detecting whether the telephone line is in the high and dry state; a controller(18) outputting a control signal if a house information communication is necessary in the detection; and a line restoring means(15) restoring the telephone line for a desired time by the control signal.

Description

Housing Information Notification System

1 is an electrical circuit diagram of a housing information notification system according to an embodiment of the present invention.

2 is an explanatory diagram for explaining the operation of the housing information notification system.

* Explanation of symbols for main parts of the drawings

A: Housing Information Notification System 2: Telephone

3: Telephone line

11: Speech network circuit (information transmitting circuit in house)

14: relay contact (switching means) 15: DP switch (line recovery means)

17: line voltage detection circuit 18: microprocessor (control means)

21: handset

The present invention relates to a housing information notification system for notifying various kinds of housing information to a notification site via a telephone line.

Conventionally, a telephone having a handset, an information dispensing circuit in a house for notifying homes of gas leaks, etc. via a telephone line to a destination, and an information dispensing circuit for a telephone line from a telephone side when a housing information is notified. A house information reporting system having a switch for switching to the side is known.

However, in the conventional house information notification system, when the in-house information transmitting circuit notifies the notification site, even if the switch is switched to the in-house information transmitting circuit, if the telephone line in which the telephone receiver is placed incorrectly is in a high and dry state, There is a drawback to not being able to notify the notice.

An object of the present invention is that when it is necessary to notify the notification site of various housing information, even if the telephone receiver is placed incorrectly and the telephone line is in a high-and-dry state, it is possible to automatically perform line recovery and notify the notification site of various housing information. It is in provision of housing information notification system.

In order to solve the above problems, the present invention has a handset, a telephone capable of talking to another telephone via a telephone line, and converts various house information into a housing information signal and transmits information in a house to notify a notice through the telephone line. A house information reporting system comprising a circuit and switching means for converting the telephone line from the telephone side to the information distributing circuit side in the house when notifying the housing information, wherein the high and dry state of the telephone line is detected. A circuit voltage detection circuit, control means for transmitting a control signal when housing information communication is required when the high and dry state is detected, and circuit north exit means for opening a predetermined time by the control signal to perform circuit recovery. Adopted.

With such a configuration, in the case where it is necessary to notify the destination of various types of housing information, even when the telephone is incorrectly placed in the telephone receiver and the telephone line is in a high-and-dried state, the circuit recovery means opens the telephone line for a predetermined time to recover the circuit. As a result, various housing information can be promptly notified to the notification destination.

A first embodiment of the present invention will be described with reference to FIGS. 1 and 2.

As shown in Fig. 1, the house information notification system A includes the speech network circuit 11, the call signal detection circuit 12 for detecting the call signal, and whether the telephone 2 occupies the telephone line 3; A line occupancy detection circuit 13 for detecting whether or not to be connected, a relay contact 14 for switching the telephone line 3, a DP switch 15 for generating a DP signal, a dial transmission circuit 16, a line voltage detection circuit ( And a telephone (2) having an information transmitter (1) composed of a microprocessor (18) and the like, and a telephone (2) having a receiver (21) and able to talk to another telephone via a telephone line (3).

The speech network circuit 11, which is a housing information transmitting circuit, is a circuit for loading a push button (PB) signal or various kinds of housing information output from the dial transmitting circuit 16 onto the telephone line 3 as the housing information signal, and the modem 111 ) Is input. In addition, the housing information includes electric meter reading data measuring gas consumption from a gas meter, voltage from a gas leak alarm, and a nus call by pressing a first-aid button.

The call signal detection circuit 12 is connected in parallel to the telephone line 3 and transmits an electric signal 121 to the microprocessor 18 when detecting a call signal (generally, AC 75V, 16Hz).

The line occupancy detecting circuit 13 is disposed between the brake side of the relay contact 14 and the telephone 12, and when the handset 21 of the switcher 2 detects the current flowing by falling off the hook 22, the electric The signal 131 is sent to the microprocessor 18. In addition, when the telephone line 3 is in a high and dry state, the electric signal 131 is not sent out.

The relay contact 14 is a contact of the relay 141 controlled by the microprocessor 18, and normally the movable contact is on the brake side, but is switched to the make side (city location) when notifying the house information.

The DP switch 15 is for generating a dial impulse by opening and closing the contact when the telephone line 3 is a dial pulse line. In addition, when the telephone line 3 is a push line, it maintains a closed state.

In addition, the DP switch 15 constitutes a part of the circuit recovery means. During the circuit recovery, the telephone line 3 is left open for a predetermined time (11 seconds in this embodiment).

The dial transmission circuit 16 sends a DP switch control signal for opening and closing the DP switch 15 to the DP switch 15 when the telephone line 3 is the dial line. In the case of a push line, a DP switch control signal for closing the DP switch 15 is sent to the DP switch 15 and a PB signal is sent to the speech network circuit 11.

The line voltage detection circuit 17 is a circuit for detecting the presence or absence of a voltage applied between L1 to L2 of the telephone line 3 (for example, assumed to be at 1.5V or more), and while detecting, the microprocessor ( Sends an electrical signal 171 to 18).

The microprocessor 18 (lithium battery drive) is connected to the dial transmission circuit 16 based on electrical signals 121, 131, 171 and housing information signals from a gas meter, a gas leak alarm, a first aid button, etc., which are connected via an interface 181. It is a chip microcomputer for controlling the relay 141 and the modem 111.

In addition, the microprocessor 18 does not switch the relay contact 14 to the make side while the electrical signal 121 or the electrical signal 131 is detected even when the housing information signal is sent.

The telephone 2 is a telephone of type 601 in this embodiment.

The telephone line 3 is connected to an exchange (for example, a D70 type digital exchange) in the telephone station. When the switch detects a state in which the receiver 21 is set to the wrong position continuously for a predetermined time, the switch stops applying the line voltage to the telephone line 3 in order to prevent power consumption and turns the telephone line 3 high. End dry. The exchanger sends out a monitoring pulse 31 for detecting that the receiver 21 is returned to the hook base 22 at 10 second intervals.

Next, in the case of circuit return, the operation of the housing information notification system A will be described below with reference to FIG.

A predetermined time has passed away from the hook base 22 of the handset 21 of the telephone 2, and the telephone line 3 is in a high and dry state.

When it is necessary to notify the notification place of the housing information (time T1), the microprocessor 18 energizes the relay 141 to switch the relay contact 14 to the make side.

The microprocessor 18 detects by the line voltage detection circuit 17 that the telephone line 3 is in a high-and-dry state, sends a DP switch control signal at time T2, and switches the DP switch 15 to 11. Open for a second.

When the DP switch 15 is in the open state for 11 seconds in this manner, the exchange assumes that the handset 21 of the telephone 2 is returned to the hook stand 22 and reapplies the line voltage to the telephone line 3.

The microprocessor 18 determines that the telephone line 3 has been restored by the line voltage detection circuit 17, and puts the DP switch 15 in the closed state at the time T3.

At the time T4 (T3 + 4 seconds), the dial originating circuit 16 dials the other party.

After confirming the response of the notification place (at time T5), the microprocessor 18 transmits the housing information to the telephone line 3.

The advantages of the house information notification system A of the present embodiment will be described below.

(a) The telephone line 3 is in a high-and-dry state because the receiver 21 is misplaced when the gas company is notified of gas leak or periodic meter reading data or when it is necessary to notify the medical institution of the emergency condition. In this case, line recovery is performed with the DP switch 15 in the open state for 11 seconds. As a result, it is possible to promptly notify the housing information that is urgent, thereby preventing accidents in advance.

(b) Since the DP switch 15 is effectively used and the line voltage detection circuit 17 is newly established, only the program of the microprocessor 18 is changed, the manufacturing cost increases only slightly.

(c) When it is not necessary to notify housing information, line recovery is not performed even if the telephone line 3 is in a high and dry state. Because of this, lithium batteries are not consumed without need.

The present invention includes the following embodiment in addition to the above embodiment.

a. The switching means may be constituted by a semiconductor switch using a semiconductor such as a transistor or a FET.

b. A switch portion of the circuit recovery means for performing circuit recovery by opening the telephone line 3 for a predetermined time may be provided between the telephone line 3 and the movable contact of the relay contact 14.

c. The telephone 2 may be a push type telephone or a cordless telephone.

d. The line voltage detection circuit 17 may be connected in parallel with the speech network circuit 11 to detect that the telephone line 3 is restored after the DP switch 15 is returned to the closed (on) state. In this case, since the line voltage detection circuit 17 does not need to detect high impedance and does not require high breakdown voltage as compared with the above embodiment, it is possible to reduce the manufacturing cost of the circuit.

Claims (1)

An in-house information transmitting circuit having a handset 2, a telephone 2 capable of talking to another telephone via a telephone line 3, and converting various house information into a housing information signal and notifying the notification site via the telephone line. (11), switching means (14) for switching the telephone line from the telephone side to the information transmitting circuit side in the house when notifying the house information, and the line voltage detection for detecting the high and dry state of the telephone line. A circuit 17, control means 18 for sending out a control signal when housing information communication is required when detecting the high and dry state, and line recovery means 15 for opening a predetermined time by the control signal to perform line recovery. Housing information notification system comprising a.