KR970000822B1 - Alarm apparatus using voice - Google Patents

Abstract

An alarming apparatus using a sound signal is provided that solves interference phenomenon to be occurred in conventional wireless communication method using radio waves and decreases a cost of the system. The alarming apparatus, which receives an abnormal sense signal from at least one sensor sensing various abnormal states as being installed in different spaces within a building and communicates with a remote site control unit, includes at least one transmitter(10~13) being installed at the same space as the sensor in a manner of being corresponded one-to-one to each sensor, spread-spectrum modulating an abnormal sense signal generated from a corresponding sensor to a sound signal and wireless-transmitting it; at least one repeater(35~38) being installed to the same space as the transmitter in a manner of being corresponded one-to-one to each transmitter, demodulating the sound signal wirelessly received from the transmitter, and generating a alarming sound according to the demodulation result or outputting a guide sound transmitted from the remote site main control unit; a signal transmitter(40) for analyzing an abnormal sense signal transmitted from a repeater in a wire to generate a corresponding alarming control signal to the repeater, reporting the abnormality to the remote side main control unit, granting a proper cycle to each repeater, and communicating exclusively.

Description

Sound alarm device

1 is a block diagram schematically showing the configuration of a conventional alarm device.

Figure 2 is a block diagram schematically showing the configuration of the alarm device according to an embodiment of the present invention.

3 is a diagram showing a detailed configuration of a repeater in FIG.

4 is a diagram showing a detailed configuration of a transmitter in FIG.

5 is a waveform diagram showing a modulation and demodulation process of a repeater or a transmitter.

6 shows a communication protocol between a repeater and a transmitter.

The present invention is to determine the abnormal state from a plurality of sensors in the crime prevention and disaster prevention system.

In general, the security and disaster prevention system is composed of an alarm device and a remote location device installed in the home. The alarm device alerts the user when an abnormality detection signal is received from a plurality of sensors to prevent or detect theft or disaster. At this time, the remote device is mainly a security company. And radio waves are used as a communication medium for the interconnection between the sensor and the alarm device.

1 is a block diagram schematically showing the configuration of a conventional alarm apparatus. The alarm device detects an abnormal condition and generates a sensor 5 for generating an abnormal detection signal, a transmitter 10 for transmitting an abnormal detection signal input from the sensor 5 in the form of radio waves, and in response to the abnormal detection signal received wirelessly. It consists of a receiving and alarm device 15 that generates an alarm sound. The alarm device may be installed in a home or outdoors at a short distance.

The reception and alarm device 15 is typically configured in combination, but the reception device and the alarm device may be used separately. The security company 20 receives an abnormality detection signal from the reception and alarm device 15 through a telephone line and recognizes an emergency and functions as an emergency response. Instead of these alarms, they may be contacted by relatives, neighbors or police stations. Meanwhile, the transmitter 10 and the reception and alarm device 15 may be implemented in a two-way communication mode for mutual transmission and reception. In addition, the transmission power of the transmitter 10 is limited to have a constant size by law. As a result, the transmission distance is shortened, so that the receiving device can be separated from the alarm device independently to compensate for the weak point of communication by using multiple receivers in a single alarm device.

The alarm device having the above-described configuration has a problem in that a plurality of receivers should be provided because the transmission distance is shortened due to the limitation of the transmission output. In the case of using a plurality of sensors, the number of transmitters increases. In addition, when the use of an alarm device using radio waves as described above in the situation that the spread of office equipment and home appliances that can cause radio waves in each business or home is increasing, there is a problem that interference and interference with other radio waves occur There was this.

Accordingly, an object of the present invention is to provide an alarm device that can solve the interference phenomenon with other radio waves of the conventional radio communication method using radio waves and to reduce the price of the device.

Another object of the present invention is to provide an alarm apparatus for transmitting a signal spectrum modulated to a sound signal of a voice band in order to enable communication even under various environmental noises.

Hereinafter, an alarm device according to an embodiment of the present invention will be described in more detail with reference to the accompanying drawings. The reference numerals used in the drawings showing the alarm apparatus according to the present invention use the same reference numerals when teaching the same components as those used in the prior art alarm apparatus.

2 is a block diagram schematically showing the configuration of the alarm device according to an embodiment of the present invention. The spaces 1 to 5 shown in the drawing are arbitrary spaces in the home. Each space includes one sensor 5, home appliance 25, pager 30, and two sensors 6 and 7 (the number can be increased if necessary). It is installed. The output of any sensor is the contact output of a read switch or relay. Each sensor 5, home appliance 25, pager 30, two sensors 6, 7 are connected to the signal transmitter 40 through separate transmitters 10-13 and repeaters 35-38 installed in the same space. In this way, since several repeaters 35 to 38 are connected to one signal transmitter 40, the connection between the repeaters 35 to 38 and the signal transmitter 40 has a bus structure. The signal transmitter 40 eliminates a phenomenon such as mutual interference by communicating with the repeaters 35 to 38 at different periods (mutually exclusive). In other words, the signal transmitter 40 sequentially calls the repeaters 35 to 38 in the spaces 1, 2, 3 and 4 through the connection line 45 at regular intervals to communicate with the transmitters 10 to 13 in each space. Accordingly, each of the repeaters 35 to 38 instructs the transmitter 10 to 13 to transmit its abnormal or normal signal to itself (the repeater). In addition, the signal transmitter 40 communicates with the security company 20 through a telephone line. In the alarm apparatus, both radio communications between the transmitters 10 to 13 and the corresponding repeaters 35 to 38 are performed using sound as a medium.

In other words, the following operation is performed in space 1. When the sensor 5 detects an abnormality, the transmitter 10 temporarily stores the abnormality detection signal, and transmits the abnormality detection signal to the relay 35 when a request for transmission is received from the repeater 35 during the communication time between the repeater 35 and the signal transmitter 40. At this time, the signal transmitter 40 calls the repeater 35 through the connection line 45 to command communication with the transmitter 10.

In space 2, the following actions take place: When the user wants to control the home appliance 25 to be controlled in another place in a certain place, when the user commands the operation of the device through the user interface means of the signal transmitter 40, the signal form of the sound to the transmitter 11 through the repeater 36 in the space 2 A control signal having is sent out. As a result, the home appliance 25 operates in response to the control signal transmitted from the transmitter 11.

In space 3, the following actions take place: When the user operates pager 30 connected to transmitter 12 to call another space, the call signal generated at pager 30-space 1, 2, 4 or called party repeater may be included. Is sent to transmitter 12. At this time, the transmitter 12 converts the call signal into a form of an audio signal and transmits the call signal to the repeater 37. At this time, the signal transmitter 40 detects the called repeater and notifies the call so that the called repeater generates a ring tone. The signal transmitter 40 also notifies the security company 20 of such a call. If each repeater adds a function to communicate with each other, and the signal transmitters 40 connect both sides via a circuit 45, communication between them is also possible.

Space 4 indicates that several sensors can be connected to one transmitter, and the basic operation is the same as in space 1.

3 is a diagram showing a detailed configuration of the repeater in the second diagram. The repeater includes a carrier generator 260 for generating a predetermined carrier, a microcomputer 270 for outputting transmission data in response to a predetermined data input, a signal transmitter connection unit 205 for interfacing the signal transmitter with the microcomputer 270, and pseudo noise. A pseudo noise generator 265 for generating and synthesizing the transmission data and the pseudo noise, a modulator 275 for frequency spread modulating the carrier with the pseudo noise and the synthesized transmission data, and a signal frequency modulated from the modulator 275 A speaker 295 for receiving an audible sound or a guide sound from the signal transmitter connection unit 205 and then amplifying the amplified sound signal and outputting the predetermined sound, a microphone 200 for detecting an acoustic signal or an indoor sound transmitted from the transmitter, and the pseudo noise and the carrier wave. Demodulates an audio signal into original transmission data and receives the received data into the microcomputer 270. A demodulator 280 that delivers the data, a ROM 285, a test button 250, and an attenuator 255. The test button 250 is for use in installing the device. When the button 250 is input, the attenuator 255 is operated to set the location of the device so that communication is performed while the audio output is reduced to 3 dB. However, in actual use, 3dB is normally output high, so that it has enough output power. In addition, the voice band filter and the amplifier 290 is to filter the room sound detected by the microphone 200, and amplifies and amplifies the room sound to the signal amplifier connection unit 205 to transmit the indoor situation to the main controller of the security company 20 through the signal transmitter 40. do.

4 is a diagram illustrating a detailed configuration of a transmitter in FIG. 2. The transmitter includes a carrier generator 160 for generating a carrier wave, a microcomputer 170 for outputting transmission data in response to a predetermined data input, and a signal transmitter connection unit for interfacing each sensor 5 or home appliance adapter 115 or pager 30 with the microcomputer 170. 105, a pseudo noise generator 165 for generating pseudo noise and synthesizing the transmitted data and the pseudo noise, and a modulator 175 for frequency spreading modulating the carrier with the pseudo noise and transmitted data synthesized from the modulator. The speaker 195 outputs a predetermined amplified signal after receiving the frequency-expanded modulated signal, the microphone 100 for detecting the sound signal transmitted from the repeater, and the pseudo signal and the carrier wave to demodulate the sound signal into original transmission data. It consists of a demodulator 180 which forwards the received data to 170.

According to the above configuration, the repeater and the transmitter can perform bidirectional communication by performing a process of frequency spreading modulation and demodulating the data sequence of various signals into the sound of the voice band. Data generated from the repeater and the transmitter, respectively, can be determined as shown in the following two tables, for example, and composed of 8 bits. In other words, the start and end are allocated by 1 bit, and 6 bits except the 2 bits may be composed of 3 bits of command or status report and 3 bits of unit number.

The pseudo noise generator 165 or 265 can also use a known five-stage shift register. At this time, PN0 (5, 2) used for transmission in the repeater and PN1 (5, 4, 3, 2) used for transmission in the transmitter are determined as '1111100110100100001010111011000' and '1111100100110000101101010001110', respectively, by 31 bits. In addition, by implementing a variable tap (tap) can be switched to the other party's code for transmission and reception. At this time, the sending time of one byte of data is about 400 ms, and the pseudo noise is repeatedly transmitted 131 times for one byte of data. The repetitive transmission time of 131 pseudo noises can be 406.1 ms and the pause time between data bytes can be 6.1 ms. In addition, since one data transmission time is continuously transmitted eight times, the preamble 100ms adds up to 3.348ms.

The above data setting, generation of pseudo noise, and modulation / demodulation can be easily implemented based on a known frequency spreading communication method.

Hereinafter, two-way communication between the transmitter and the receiver of FIG. 2 will be described in detail with reference to FIGS. 3 and 4.

First, the process of transmitting the abnormal signal detected by the sensor 5 of the device to the security company 20 through the repeater 35 and the signal transmitter 40 in the transmitter 10, if the sensor 5 shown in FIG. Will generate a signal. The microcomputer 170 of the transmitter 10 receiving the abnormality detection signal detects the occurrence of abnormality and generates corresponding transmission data. The transmission data is transmitted to the pseudo noise generator 165. The pseudo noise generator 165 adds the pseudo noise generated from itself and the transmission data from the microcomputer 170 to the modulator 175. The modulator 175 frequency spread modulates the carrier wave of the carrier generator 160 using the signal and propagates through the speaker 195. The sound signal transmitted through the speaker 195 is received through the microphone 200 of the repeater 35 shown in FIG. However, the repeater 35 is allocated a time to communicate with the transmitter 10 from the signal transmitter 40 to communicate. At this time, the repeater 35 functions to decode the signal received from the transmitter 10 and send it to the signal transmitter 40. The demodulator 280 constituting the repeater 35 transmits the signal received through the microphone 100 using pseudo noise and a carrier wave. Demodulate the original data and deliver it to the microcomputer 270. The microcomputer 270 inputs the demodulated received data, generates a predetermined code according to the contents, and transmits the predetermined code to the security company 20 through the signal transmitter 40. Accordingly, the security company 20 will be able to determine what abnormality occurred in the remote.

Second, when the signal transmitter 40 describes a process of transmitting an alarm sound for an abnormal occurrence in the house or a guide sound for operating or operating a system from the security company 20 to the user through the repeater 35, the sound generated from the security company 20 is signaled. It is passed through the transmitter 40 to the relay 35. Accordingly, the signal transmitter connection unit 205 of the repeater 35 receives the guide sound from the signal transmitter 40 and transmits the guide sound to the speaker 295. The speaker 295 predeterminedly amplifies the guide sound and outputs the audible sound. In addition, the signal transmitter 40 analyzes the abnormality detection signal transmitted from the repeater 35 to generate an alarm control signal to the repeater 35, thereby causing the speaker 295 of the repeater 35 to sound an alarm to inform the user of the occurrence of the abnormality.

Third, when the user commands the operation through the transmitter 40 and the remote home appliance 25 is operated through the repeater 35 and the transmitter 10, when the user inputs the operation command of the home appliance 25 to the signal transmitter 40 The signal transmitter 40 generates a predetermined operation signal to the repeater 35 in the space. The repeater 35 having the structure as shown in FIG. 3 receives the manipulation signal through the signal transmitter connection unit 205 and transmits it to the microcomputer 270. The microcomputer 270 detects the manipulation and generates corresponding transmission data. The transmission data is transmitted to the pseudo noise generator 265. The pseudo noise generator 265 adds the pseudo noise generated from itself and the transmission data from the microcomputer 270 to the modulator 275. The modulator 275 performs frequency spread modulation on the carrier of the carrier generator 260 using the signal and propagates through the speaker 295. The sound signal transmitted through the speaker 295 is received through the microphone 100 of the transmitter 10 shown in FIG. At this time, the transmitter 10 decodes the signal received from the repeater 35 and sends it to the home appliance 25 through the home appliance adapter 115. The demodulator 180 constituting the transmitter 10 pseudo-noises the signal received through the microphone 100. And demodulate the original data using the carrier and deliver it to the microcomputer 170. The microcomputer 170 inputs the demodulated received data and generates a predetermined code according to the contents thereof, and transmits the predetermined code to the home appliance 25 through the signal transmitter connection unit 105 and the home appliance adapter 115. Accordingly, the home appliance 25 operates in response to the manipulation signal.

Fourth, in the event of an emergency, the communication process between the user and the security company 20 through the repeater 35 and the signal transmitter 40 will be described. For example, in case of an emergency patient, a sound or other equivalent indoor sound occurs. This sound may be transmitted to the security company 20 via the transmitter 40 through the microphone 200 → voice band filter and amplifier 290 → signal transmitter connection 205 of the repeater 35. The voice band filter and the amplifier 290 are for transmitting only the sound having a low noise, for example, KHz or less, to the signal transmitter 40 when listening to indoor sound.

In this way, if the agent who is present at the guard company 20 monitors the occurrence of an emergency and attempts to make a voice call with the other party, the voice is transmitted to the signal transmitter of the transmitter 40 → the repeater 35 as described in the second method. It is transmitted to the speaker 295 of the connection unit 205 → the repeater 35 and output in the form of an audible sound.

Fifth, when the calling process by the pager 30 is described, when the user calls another space using the pager 30, the call signal is transmitted in the form of sound to the repeater through the transmitter. The signal transmitter 40 recognizes the fact of the call as a signal input from the repeater and connects a repeater in the opposite space to enable the transmission of a call sound or mutual communication.

5 is a waveform diagram illustrating a modulation and demodulation process of a repeater or a transmitter. Reference numeral 5a denotes a transmission carrier wave, and 5b denotes a synthesized waveform of pseudo noise and transmission data. As a result, the modulator 275 of the repeater shown in FIG. 3 has a function of frequency spread modulating the carrier wave as shown in (5a) with the data sequence as shown in (5b) to generate a modulated wave as shown in (5c). The modulated wave of (5c) is demodulated by a reference waveform such as (5d) in the demodulator (180 of FIG. 4) of the corresponding repeater to obtain the original carrier waveform, and a receiver when the complete carrier waveform is obtained (transmitter) Or a repeater.) The reference waveform is the transmitted data stream. The necessary transmission data is the result of subtracting the pseudo noise component from the data sequence.

6 shows a communication protocol between a repeater and a transmitter. 6a is initial transmission data sent from the repeater to the transmitter, and 6b is response data sent from the transmitter to the repeater. Since there are a plurality of types of transmission data, the reference waveform of the receiver should have a corresponding number in this demodulation process. Therefore, selection of a reference waveform when receiving data is an important problem, and thus a protocol that is a standard method of communication is required. In the present embodiment, as described above, it is assumed that eight types of transmission data are assumed, and that the types of pseudo noise code strings are two types, PN0 and PN1. The sequence of communications always precedes the repeater, so the transmitter initially selects an arbitrary reference waveform. Since the synchronization is necessary to identify the transmitted waveform, the repeater sends only a carrier wave for a time T as a ready signal. The receiving side (ie, the transmitter) receives the ready signal and is in the input standby state, and the repeater outputs the actual data at the time after the set time Tsu passes from the time when the ready signal ends. Since the receiver is configured with a correlator of matched filters, it is determined that data such as a reference waveform is received when the autocorrelation function of the received waveform is greater than or equal to a set reference value. After completing the transmission of the data once, if the response data is not received according to the contents of the transmission data, the transmitting side regards it as a communication error and repeats the above process for a predetermined number of times. If the response data is not received after trying a predetermined number of times, the repeater notifies the signal transmitter 40 of the communication failure. The receiving end attempts the input operation again by changing the reference waveform when the autocorrelation function value higher than the reference value is not obtained in each input operation. Of the 8 data types assumed in the above process, the signal sent from the repeater to the transmitter is synthesized and transmitted to PN0, and the signal sent from the transmitter to the repeater is synthesized and transmitted to PN1, so that the receiving side repeats the input operation for the number of data in each direction. Cases may occur.

On the other hand, the alarm device can be used in various applications such as not only crime prevention but also within the scope of the spirit of the present invention.

The alarm device according to the present invention as described above has the advantage of lowering the price of the alarm device by using the sound as a medium of the two-way wireless communication between the transmitter and the repeater, it is possible to improve the communication in various noise environments It works.

Claims (9)

It is installed in different spaces of the house and receives the abnormality detection signal from one or more sensors for detecting various abnormal conditions, and in an alarm device that communicates with a remote control device, it is installed in the same space as the sensor in one-to-one correspondence with each sensor. At least one transmitter for frequency transmission modulation of the abnormality detection signal generated from the corresponding sensor into an acoustic signal and wirelessly transmitting the signal, and one-to-one correspondence with each transmitter in the same space as the transmitter, demodulating the acoustic signal wirelessly received from the transmitter. And wirelessly transmits the predetermined control data provided from the remote main control device by frequency spread modulation with a sound signal of a predetermined band and generates an alarm sound or outputs a guide sound transmitted from the remote main control device according to the demodulation result. One or more repeaters, and from any repeater to the Analyze the abnormality detection signal to generate the corresponding alarm control signal to the repeater, the remote main controller is notified of the occurrence of the abnormality, each relay is characterized in that it consists of a signal transmitter for mutually exclusive communication Alarm device. The alarm apparatus according to claim 1, wherein the sound signal has a voice frequency band. The alarm device according to claim 1, wherein the acoustic signal is an ultrasonic wave. 2. The apparatus of claim 1, wherein the signal transmitter provides a user interface for operating a device connected to any transmitter and controls the operation of the device with a repeater corresponding to the transmitter in response to the user interface input. By transmitting a signal, the alarm device characterized in that the communication between the repeater and the transmitter via the corresponding sound signal is made so that the device is controlled. 10. The apparatus of claim 1, further comprising a pager connected to any transmitter and providing a user interface for a call and delivering a call signal to the transmitter in response to a user interface input, the transmitter corresponding to the call signal. And wirelessly transmitting a sound signal to a repeater, wherein the signal transmitter analyzes the call signal demodulated by the repeater and calls the called repeater to generate a ringing tone in the called repeater. 6. The alarm apparatus according to claim 5, wherein said signal transmitter controls a voice call between said call and called party repeater. The apparatus of claim 1, wherein the repeater comprises: a carrier generator for generating a predetermined carrier, a microcomputer for outputting transmission data in response to a predetermined data input, a signal transmitter connection unit for interfacing the signal transmitter with the microcomputer, A pseudo noise generator which generates pseudo noise, synthesizes and outputs the transmission data and the pseudo noise, a modulator which frequency spread modulates the carrier with the transmitted data synthesized with the pseudo noise, and a signal which is frequency-expanded modulated from the modulator Receiving a sound signal or an amplified sound signal from the connection unit, and amplifying and outputting a speaker, a microphone for detecting a sound signal or a room sound transmitted from a transmitter, and the sound signal as the pseudo noise and carrier wave. To demodulate the original transmit data to deliver the received data to the microcomputer. Alarm system, characterized by consisting of a prematurely. The transmitter of claim 1, wherein the transmitter comprises a carrier generator for generating a carrier, a microcomputer for outputting transmission data in response to a predetermined data input, and a signal transmitter for interfacing each sensor or home appliance adapter or pager with the microcomputer. A connection unit, a pseudo noise generator for generating pseudo noise and synthesizing the transmitted data and the pseudo noise, a modulator for frequency spreading modulating the carrier with the transmitted data synthesized with the pseudo noise, and frequency extension from the modulator The speaker receives the modulated signal, amplifies and outputs the predetermined signal, a microphone for detecting the sound signal transmitted from the repeater, and demodulates the sound signal with the original transmission data using the pseudo noise and carrier wave to receive the received data into the microcomputer. Alarm device characterized in that configured to deliver a demodulator. The apparatus of claim 7, wherein the repeater further comprises a voice band filter and an amplifier for voice band filtering, predetermined amplifying the room sound detected by the microphone, and transmitting the predetermined sound to the signal amplifier connection unit. Alarm device, characterized in that configured to deliver to the remote main controller.