KR20020057642A - Device for transmitting sense signal through electric power line in security system - Google Patents

Abstract

The present invention relates to an abnormality detection signal transmission apparatus for transmitting an abnormality signal detected from a plurality of sensors in the unmanned security system through a power line.

Sensor to detect external invasion, gas leakage, fire, etc. to transmit abnormal detection signals detected from multiple sensors through power lines without installing separate lines in the security terminal device of the unmanned security system, and power line (L1) Receives a call analog signal input from L2) and converts it into a digital signal to determine whether it is called.If it is called, each detection signal such as external intrusion detection, gas leakage detection, fire occurrence detection signal received from the sensor is called. And a power line communication unit which modulates a unique code corresponding to and converts the unique code into an analog signal and transmits it to the power lines L1 and L2.

Description

DEVICE FOR TRANSMITTING SENSE SIGNAL THROUGH ELECTRIC POWER LINE IN SECURITY SYSTEM}

The present invention relates to an unmanned security system, and more particularly to an apparatus for transmitting an abnormal detection signal detected by a plurality of sensors in the unmanned security system via a power line.

In general, unmanned security systems are installed in homes, shopping malls, offices, etc. to notify the control room in case of an emergency, for example, intruders, fire, or gas leaks. It is a system that automatically communicates emergency situations to personnel dispatch and police station. The unmanned security system provides various kinds of sensors such as pressure sensors and heat sensors, and the signals detected by these sensors and various control signals generated by the user to the control room of the security system wherever it is easy to invade the subscriber building. It is provided with a security terminal device for such, such a security terminal device is disclosed in Korean Laid-Open Patent Publication No. 1997-67030. In the security terminal device as described above, a plurality of sensing sensors are connected to the sensor connection part, and a plurality of lines connected to the plurality of sensing sensors have to be constructed so as to be connected to the sensor connection part, respectively. In other words, in order to install a plurality of furnaces connected to the sensor, it is necessary to lay a track in a curved place or a remote place so as not to be noticed by a person, or install it through a ceiling, or inevitably expose it to the outside. There was a lot of trouble.

Accordingly, an object of the present invention is to provide an abnormal detection signal transmission apparatus for transmitting an abnormal detection signal detected from a plurality of sensors through a power line without installing a separate line in the security terminal device of the unmanned security system.

Another object of the present invention is to provide an abnormality detection signal transmission apparatus using a power line that does not damage the aesthetics by not installing a separate line between the unmanned security system and a plurality of sensors.

1 is a block diagram of a security terminal device according to an embodiment of the present invention

2 is a block diagram of a power line modem sensor according to an embodiment of the present invention

Explanation of symbols on the main parts of the drawings

10: power line communication unit 12: CPU

14: timer 16: audio output unit

18: alarm generating unit 20: display unit

22: RF module 24: key input unit

26: wireless remote control 28: piezo buzzer

30: speaker 32: communication unit

40: sensor 42: power line communication unit

44: control unit 46: modulator

48: demodulator 50: transformer

An abnormal detection signal transmission apparatus using a power line in the unmanned security system of the present invention for achieving the above object, the sensor for detecting external invaders, gas leakage, fire, etc., and the call input from the power lines (L1, L2) It receives the analog signal and converts it into a digital signal to determine whether it is called.If it is called, it modulates a unique code corresponding to each detection signal such as external invasion detection, gas leakage detection, fire occurrence detection signal received from the sensor. It is characterized by consisting of a power line communication unit for converting into an analog signal to transmit to the power lines (L1, L2).

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

1 is a block diagram of a security terminal device according to an embodiment of the present invention.

The power line communication unit 10 includes a modulator, a demodulator, a transformer, and the like. The power line communication unit 10 modulates call data to be sequentially called to check an abnormal state under the control of the CPU 12, and transmits it to the power lines L1 and L2. In addition, an analog signal for detecting an abnormal state drawn from the power lines L1 and L2 is demodulated and applied to the CPU 12. The wireless remote controller 26 is provided with a boundary start, boundary release, and emergency key to generate key signals for these key signals and transmit them wirelessly. The RF module 22 demodulates the key signal received from the wireless remote controller 26 and applies it to the CPU 12. The key input unit 24 generates key signals for setting various functions (remote control number setting, partial boundary setting, boundary start time setting, customer ID and control room telephone number input), and applies them to the CPU 12. The timer 14 is composed of a real time clock chip, and provides the current time to the CPU 12 by the real time clock. The CPU 12 receives a boundary start, boundary release, and emergency signal input from the RF module 22, sets the boundary start and the boundary release, and controls to notify the control room of the emergency situation when the emergency signal is input, and the boundary start mode. After generating and outputting call data one by one in sequence, the sensor state received from the power line communication unit 10 is sensed and controlled to transmit information on chip particle generation, gas leakage, fire occurrence to the control room, and the key input unit ( According to the operation of 24), a voice message control and a display control signal for informing the user of various operating conditions are output. The voice output unit 16 generates the current operating state and the alarm state voice signal under the control of the CPU 12 and outputs the voice signal through the speaker 30. The alarm generator 18 generates an alarm signal for notifying an emergency situation under the control of the CPU 12 and outputs the alarm signal through the piezo buzzer 28. The display unit 20 includes a plurality of LEDs for displaying a current operating state and an alarm state message under the control of the CPU 12, and displaying a plurality of sensor operating states. The communication unit 32 interfaces to communicate with the control room under the control of the CPU 12.

The key input unit 24 is connected to the CPU 12, but in the case of providing a security terminal sub-device, the key input unit is provided in the security terminal sub-device, and the key is communicated between the security terminal sub-device and the security terminal main device. Receive and process an input signal.

2 is a block diagram of a power line modem sensor according to an embodiment of the present invention.

The sensor 40 is composed of a pressure sensor, a heat sensor, and detects various external invaders, gas leakage, and fire. The power line communication unit 42 receives the call analog signal input from the power lines L1 and L2, converts the signal into a digital signal, and determines whether the call is called. If the call is called, the external intrusion detection received from the sensor 40, A unique code corresponding to each detection signal such as a gas leakage detection signal or a fire occurrence detection signal is modulated to be converted into an analog signal and transmitted to the power lines L1 and L2. The power line communication unit 42 is composed of a control unit 44, a modulator 46, a demodulator 48, and a transformer 50.

The controller 44 includes a ROM and a RAM, stores data for calling the sensor, and stores a unique code for outputting a detection signal of the sensor 40 when there is a call. The demodulator 48 receives the impedance-matched analog call data from the power lines L1 and L2 through the transformer 50 and demodulates the digital call data to the controller 44. The modulator 48 modulates a unique code corresponding to the detection signal of the sensor 40 into an analog signal under the control of the controller 44 and outputs the signal to the power lines L1 and L2. Transformer 50 is connected between power lines L1 and L2 and modulator 48 and demodulator 46 to relay signals between power lines L1 and L2 and modulator 48 and demodulator 46. Match impedance.

In the present invention, for convenience of description, only one sensor of FIG. 2 is illustrated, but the signal sensed from the plurality of sensors is configured by connecting the power line communication unit 10 of the security terminal device of FIG. It is possible to receive and notify the alarm and control room.

1 to 2, the operation of the preferred embodiment of the present invention will be described in detail.

First, the sensor 40 is installed in the interior of a building, a door or a window, and detects gas leakage, external invasion, fire occurrence, etc. by heat detection, pressure detection, and contact control. The controller 44 monitors the state of the sensor 40, and if an abnormal state is detected, stores the state where the abnormal state is detected. In addition, the CPU 12 of the security terminal apparatus as shown in FIG. 1 sequentially generates call data to monitor the sensors and outputs the data to the power line communication unit 10. At this time, the power line communication unit 10 changes through a modulator and transmits an analog signal through the power lines L1 and L2. In this case, the modulated call data is applied to the transformer 50 through the power lines L1 and L2, and the transformer 50 performs impedance matching on the call data received through the power lines L1 and L2 to demodulator 42. Is applied. The demodulator 42 demodulates the call-matching data impedance-matched by the transformer 50 and applies the demodulated data to the controller 44. The controller 44 checks whether the call data for calling itself is the call data for calling itself, and generates and outputs the unique code detected by the sensor 40 to the modulator 46. The modulator 46 modulates the corresponding unique code (abnormal state occurrence signal) detected by the sensor 40 and transmits the analog signal through the power lines L1 and L2 as analog signals. At this time, the power line communication unit 10 impedance-matches the corresponding unique code according to the detection of the sensor 40 received through the power lines L1 and L2 and demodulates the demodulator in the demodulator and applies it to the CPU 12.

Then, the CPU 12 receives the demodulated corresponding unique code (abnormal state occurrence signal), generates corresponding alarm control data, and applies it to the voice output unit 16 and the alarm generation unit 18. For example, when the sensor 40 detects a fire, the voice output unit 16 outputs a voice guidance message, for example, "A fire has occurred. Please evacuate." For example, the sensor 40 When the external sensor detects an invasion, the voice output unit 16 outputs a voice guidance message, for example, "The thief has heard." And the alarm generating unit 18 to drive the piezo buzzer 28 to issue an alarm. After that, the CPU 12 notifies the control room that an emergency situation has occurred through the communication unit 32.

As described above, the present invention transmits an abnormal state signal detected from a plurality of sensors in an unmanned security system through a power line, so that the construction is simple and does not connect a separate transmission line between the security terminal device and the plurality of sensors, thereby reducing installation costs. In addition, since the transmission line is not exposed to the outside, there is an advantage that does not harm the aesthetics.

Claims (3)

An apparatus for transmitting an abnormal detection signal using a power line in an unmanned security system, Sensor for detecting external invasion, gas leakage, fire, etc., Receives a call analog signal input from the power lines (L1, L2) and converts it into a digital signal to determine whether it is called.If it is called, it detects external intrusion detection, gas leakage detection, fire occurrence detection signal, etc. received from the sensor. An apparatus for transmitting abnormality detection signals using power lines in an unmanned security system comprising a power line communication unit for modulating a unique code corresponding to each sensing signal and converting it into an analog signal and transmitting the analog codes to the power lines (L1 and L2). The method of claim 1, wherein the power line communication unit, Stores the call data of the sensor, the unique code for outputting the detection signal of the sensor when there is a call and the control unit, A demodulator for receiving impedance-matched analog call data from the power lines L1 and L2 and demodulating the digital call data to the controller; A demodulator for modulating a unique code corresponding to a detection signal of the sensor into an analog signal under the control of the controller and outputting the signal to power lines L1 and L2; And a transformer for impedance matching for relaying signals between the power lines (L1, L2) and the modulator and demodulator. The method of claim 2, The sensor is an abnormal detection signal transmission apparatus using a power line in the unmanned security system, characterized in that for detecting gas leakage, external invasion, fire occurrence, etc. by heat detection, pressure detection, contact interruption detection.