KR20010044384A - Changeover device for alternative public line of exclusive line in unmanned guarding system - Google Patents

Abstract

PURPOSE: A dedicated line substituting public line switching apparatus of an unmanned security system is provided to protect a subscriber against a danger factor by monitoring general matters from a control center on a security guard situation of the subscriber successively through a substituting office line even though an office line connected to a public line switching apparatus is discontinued. CONSTITUTION: An operation power unit(10) applies power. Office line input terminals(20,20a,20b) are connected to an office line through which an input signal of a subscriber is transmitted. A main controller(60) controls the input signal inputted through the office line input terminals(20,20a,20b). A main memory(70) stores the input signal controlled by the main controller(60). Relays(80,80a,80b) are turned on or off according to the control signal from the main controller(60) which controls the input signal inputted through the office line input terminals(20,20a,20b). The fourth relay(80c) switches a contact point in an ON state to an OFF state according to a single line signal generated from a single line of the office line connected to the office line input terminals(20,20a,20b). An office line output terminal(90) outputs the input signal according to the operation of the relays(80,80a,80b). A status confirming output terminal(100) outputs a signal of an OFF state switched from the fourth relay(80c).

Description

CHANGEOVER DEVICE FOR ALTERNATIVE PUBLIC LINE OF EXCLUSIVE LINE IN UNMANNED GUARDING SYSTEM}

The present invention relates to a dedicated line replacement aerial line switching device of an unmanned security system, and more particularly, when the aerial line is disconnected in an unmanned security system between a control center and a subscriber of an unmanned security company using an aerial line, the aerial line continues to be replaced with an alternate aerial line. The present invention relates to an alternative line switching apparatus for a leased line in an unmanned security system that can normally transmit information on a subscriber's expenses to the control center.

Recently, the incidence of various crimes and safety accidents has increased, which has become a social problem, and the dependence of security service companies with manned and unmanned security systems has greatly increased.

The security system is a security and alert means that protects against risk factors that threaten personal property and safety in unmanned and unmanned situations. It is useful for preventing theft and disasters such as fire and gas leakage.

The security system is composed of a subscriber terminal device connected locally around a main computer of a control center that is a situation reception desk of a security service company.

Each terminal device is installed in the subscriber's building where expenses are required such as homes, gold and silver rooms, shops and banks, and is connected to the main computer of the control center where the subscriber's information is registered through a telephone line. The main computer of the control center registers all necessary information such as the subscriber's location and measures, and the situation can be taken to prevent damage and prevent expansion by judging the situation at the site when the situation is received.

Currently, there are two types of security systems serviced by domestic unmanned security companies, using leased lines and aerials.

The private line is a 1: 1 line through a telephone station between an unmanned security service provider and the subscriber, in addition to the subscriber's telephone line, after confirming an external signal of unauthorized intrusion and disconnection of the line through the unmanned security service control network, to the subscriber. It is a way to protect the life and property of the subscriber by taking immediate call or emergency contact.

When the leased line is disconnected, it is possible to check the disconnection signal between the unmanned security company and the subscriber through the unmanned security company control network by switching to the aerial line.

However, in order to use the leased line, there is a problem in that the economic burden on the customer is great.

The aerial line also cuts the telephone line due to the repair of the line at the telephone station, but disconnects the telephone line of the subscriber and cuts the siren installed outside the subscriber's equipment in order to intentionally steal by a person engaged in the unmanned security service. The fact that no one knows this fact in an unmanned security control network, regardless of the boundary and release setting, is the reality of today's low cost unmanned security company and is the most important problem.

In order to overcome the above problems, each unmanned security company gave a disconnection check time. However, if you give a short time, the customer often disconnects the phone while talking to the outside during the weekly working hours, and if the short-line signal is short, there are many subscriber complaints that the customer is using a lot of telephone bills. Although the disconnection check time was given at an interval of 8 hours or 9 hours, there was another problem that it was not possible to confirm the disconnection at all except this time.

The method of using the aerial will be described in more detail.

1 is a schematic diagram of a conventional general security system.

As shown in the drawing, the terminal device A installed in a building such as a home or a shop which wants a security boundary is connected to the main computer C of the control center via the telephone line via the telephone line B.

The information transmission between the terminal device A and the main computer C is implemented by a modem provided in each of the terminal device A and the main computer C.

The terminal device (A) is made up of a configuration of the main body (2) connected to the various sensors (SR1, SR2b, SRn) and the sensors (SR1, SR2b, SRn) installed in the desired place of the security boundary, the sensor ( When there is a detection signal of SR1, SR2b, SRn, the situation occurrence information monitored by the main body 2 is transmitted to the main computer C of the control center.

Accordingly, the security service company will be able to identify the occurrence of the situation, such as robbery intrusion through the main computer (C) of the control center to immediately take action, such as dispatching their own dispatch team and report to the police station.

However, the terminal device of the conventional security system as described above has the following problems.

First, when a telephone line B, which is a communication line connecting the main body 2 of the terminal apparatus A and the main computer C of the control center, is disconnected or short-circuited, the situation occurrence information cannot be transmitted to the control center. In the main computer C of the control center, the disconnection and short circuit of the telephone line B cannot be confirmed. The disconnection of the telephone line B may occur in an indoor line or an outdoor line in a building, and may be caused by a breakdown of an indoor terminal board or a telephone station, and may be various. In particular, a deliberate failure by an intruder may occur. Yes should be politely reviewed. However, in the case of disconnection and short circuit of the telephone line B, there is a problem in that the actual function as a security guard system is lost before the telephone line B is directly checked and the telephone line is normally restored.

The present invention is to solve the above-mentioned conventional problems, its purpose is to keep the expenses of the subscriber through the alternate aerial when the aerial line is disconnected in the unmanned security system between the control center of the unmanned security company and the subscriber using the aerial It is an object of the present invention to provide an alternative air line switching device for a dedicated line of an unmanned security system that can normally transmit general information about a situation to the control center.

1 is a schematic diagram of a conventional general security system.

2 is a circuit diagram of a leased line replacement aerial line switching apparatus of the unmanned security system according to the present invention.

<Description of Main Parts of Drawing>

10: operation power supply unit 20, 20a, 20b: trunk line input terminal

30,30a, 30b: Circuit protection diode 40,40a, 40b: Backflow prevention diode

50, 50a, 50b: resistance prevention diode 60: main control unit

70: main memory device 80, 80a, 80b, 80c: relay

90: CO line output terminal 100: status check output terminal

110: light emitting diode

Features of the leased line alternative air line switching apparatus of the unmanned security system according to the present invention for achieving the above technical problem,

An operating power supply unit for applying power; A trunk line input terminal to which each trunk line for transmitting an input signal of a subscriber is connected; A main controller for controlling input signals respectively inputted through the trunk line input terminal; A main memory device for storing the input signal controlled by the main controller; A relay configured to be turned on and off in accordance with a control signal of the controller for controlling an input signal respectively input through the trunk line input terminal; A fourth relay for switching the contact state in the on state to the off state by a disconnection signal generated from the disconnection of the trunk line respectively connected to the trunk line input terminal; A trunk line output terminal for outputting the input signal according to the operation of the relay and a status check output terminal for outputting the signal of the off state switched from the fourth relay.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a circuit diagram of a leased line replacement aerial line switching apparatus of the unmanned security system according to the present invention.

As shown, the configuration of the present invention is largely the operation power supply unit 10, the first trunk line input terminal 20, the second trunk line input terminal 20a, the third trunk line input terminal 20b and the circuit protection diode 30, 30a, 30b, non-return diodes 40, 40a, 40b, resistance diodes 50, 50a, 50b, main controller 60, main memory 70, first relay 80, and second relay ( 80a), the third relay 80b, the fourth relay 80c, the trunk line output terminal 90, the status check output terminal 100, and the light emitting diode 110.

The function according to the configuration of the present invention configured as described above will be described in detail.

The operation power supply unit 10 supplies power to a circuit, and corresponding trunk lines are connected to the first trunk line input terminal 20, the second trunk line input terminal 20a, and the third trunk line input terminal 20b, respectively. The circuit protection diodes 30, 30a and 30b protect the circuits from abnormal signals generated from lightning or short circuit accidents of the trunk line, and the backflow prevention diodes 40, 40a and 40b are supplied from the operation power supply unit 10. Prevent current from flowing back from + to-or from-to +. The resistance preventing diodes 50, 50a and 50b prevent insulation from occurring in the first trunk line, the second trunk line and the third trunk line through insulation, and the main controller 60 commands all operations. The main circuit unit checks the abnormality of each trunk line and controls a signal transmitted through the trunk line. The main memory device 70 receives and stores a signal of the trunk line controlled by the main controller 60, and stores the first relay 80, the second relay 80a, and the third relay 80b. Receives and transmits the signals transmitted through the trunk line through the main memory device 70, respectively.

When the fourth relay 80c is disconnected from any of the first trunk line, the second trunk line, and the third trunk line, the fourth relay 80c is turned on in the on state (contact point) under the control of the main control unit 60. Switch to the off state (falling contact). The trunk line output terminal 90 outputs signals operated from the first relay 80, the second relay 80a, and the third relay 80b, respectively, and the status check output terminal 100 The off-state (falling contact) signal switched from the fourth relay 80c is output. The light emitting diode 110 is supplied from the operation power supply unit 10 through the main memory device 70 in a normal state according to input signals transmitted through the first trunk line, the second trunk line, and the third trunk line. It is turned on by the current which becomes.

The operation of the present invention according to the configuration and function as described above will be described in detail.

An input signal of the first trunk line connected through the first trunk line input terminal 20 includes the circuit protection diode 30, the backflow prevention diode 40, the resistance prevention diode 50, and the main controller 60. ) And the main memory device 70 and the first relay 80 are output to the trunk line output terminal 90. At this time, the state check contact operated by the fourth relay 80c and output through the state check output terminal 100 maintains an on state (attached contact).

When the first trunk line is disconnected, the input signal is automatically switched to the second trunk line according to a control signal controlled by the main controller 60, so that the input signal is protected from the circuit protection diode 30a and the backflow prevention diode ( 40a), the resistance preventing diode 50a, the main controller 60, the main memory device 70, and the second relay 80a are output to the trunk line output terminal 90. At this time, the state check contact operated by the fourth relay 80c and output through the state check output terminal 100 is switched from an on state (attached contact) to an off state (falling contact) for 30 seconds. The signal is transmitted to the main control unit 60 and restored to its original state (attached contact).

When the second trunk line is disconnected, the input line is automatically switched to the third trunk line according to a control signal controlled by the main controller 60, so that the input signal is protected by the circuit protection diode 30b and the backflow prevention diode ( 40b), the resistance preventing diode 50b, the main controller 60, the main memory device 70, and the second relay 80b are output to the trunk line output terminal 90. At this time, the state check contact operated by the fourth relay 80c and output through the state check output terminal 100 is switched from an on state (attached contact) to an off state (falling contact) for 30 seconds. The signal is transmitted to the main control unit 60 and restored to its original state (attached contact).

When the third trunk line is disconnected, the input signal is automatically switched to the first trunk line according to a control signal controlled by the main controller 60, so that the input signal is protected from the circuit protection diode 30 and the reverse flow prevention diode ( 40, the resistance preventing diode 50, the main controller 60, the main memory device 70, and the first relay 80 are output to the trunk line output terminal 90. At this time, the state check contact operated by the fourth relay 80c and output through the state check output terminal 100 is switched from an on state (attached contact) to an off state (falling contact) for 30 seconds. It transmits a signal to the control part 60, and is restored to an original state (attached contact) again.

If the first trunk line, the second trunk line, and the third trunk line are all disconnected, the status check contact outputted through the status check output terminal 100 is operated by the fourth relay 80c. The signal is transmitted to the main control unit 60 for 30 seconds by switching from the on state (attached contact) to the off state (falling contact), and selecting any one of the first trunk line, the second trunk line, and the third trunk line. When the line is restored, the input signal is output to the trunk line output terminal 90 through the restored trunk line as restored to the on state (attached contact).

The method for checking whether the first trunk line, the second trunk line, and the third trunk line is disconnected from the trunk line in the circuit is performed when a telephone is not used in a home, office, or company. Since the trunk line voltage of V] falls to DC voltage of 6 ~ 8 [V], it is confirmed as disconnection when it goes below DC voltage of 1 ~ 2 [V].

In addition, whether a normal state of an input signal input through the first trunk line, the second trunk line, and the third trunk line is confirmed through a light emitting diode (LED) connected to each trunk line and emitting light. If the input signal input from each trunk line is in a normal state, the light emitting diode 110 maintains a lit state.

Although the preferred embodiments of the present invention have been illustrated and described above, the present invention is not limited to the above-described embodiments, and the present invention is not limited to the above-described embodiments without departing from the spirit of the present invention as claimed in the claims. Various modifications can be made by those skilled in the art, and such modifications are intended to fall within the scope of the appended claims.

As described above, according to the air line switching device of the unmanned security system according to the present invention, even if a trunk line connected to the air line switching device is disconnected, various matters regarding the security guard situation of the subscriber continue through the alternative trunk line. Monitoring from the control center has the best effect of protecting the subscriber from risk.

Claims (5)

An operation power supply unit 10 for applying power; Trunk line input terminals 20, 20a, and 20b to which respective trunk lines for transmitting subscriber input signals are connected; A main controller 60 for controlling input signals respectively inputted through the trunk line input terminals 20, 20a, and 20b; A main memory device 70 for storing the input signal controlled from the main controller 60; Relays 80, 80a, and 80b which are turned on and off in accordance with a control signal of the controller 60 for controlling input signals respectively input through the trunk line input terminals 20, 20a and 20b; A fourth relay (80c) for switching the contact in the on state to the off state by a disconnection signal generated from the disconnection of the trunk line connected to the trunk line input terminals (20, 20a, 20b), respectively; A trunk line output terminal (90) for outputting the input signal according to the operation of the relays (80, 80a, 80b); And Private line replacement aerial line switching device of the unmanned security system, characterized in that it is composed of a status check output terminal (100) for outputting the signal of the off state switched from the fourth relay (80c). The method of claim 1, And a light emitting diode 110 which blinks according to a control signal from the main controller 60 determining whether or not an input signal is input through the trunk line input terminals 20, 20a, and 20b, respectively. Alternating line switching system for leased line of unmanned security system. The method according to claim 1 or 2, Unattended security, characterized in that it comprises a circuit protection diode (30, 30a, 30b) for protecting the circuit from the short circuit of the trunk line and the abnormal signal input from the outside connected to the trunk line input terminals (20, 20a, 20b), respectively. Alternating line switching system for leased lines in the system. The method according to claim 1 or 2, The reverse line preventing air line switching device of the unmanned security system, characterized in that it comprises a reverse flow prevention diode (40, 40a, 40b) for preventing the reverse flow of the current applied from the operating power supply (10). The method according to claim 1 or 2, Dedicated line replacement air line switching of the unmanned security system, characterized in that it comprises a resistance preventing diode (50, 50a, 50b) for preventing the resistance generated from the trunk line connected to the trunk line input terminal (20, 20a, 20b), respectively. Device.