JPH0786953B2 - Security system - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a security system in which home equipment such as a television receiver, which is originally used for another purpose, is used as a notification means. is there.

2. Description of the Related Art Conventionally, there is a hole security system as a typical home information system, and a system that receives a monitoring signal from a sensor installed at each monitored point and notifies it with an alarm or an alarm sound is generally used. Target. And
For this purpose, for example, a power line in the home is used as shown in FIG. 8, or wirelessly as shown in FIG.
Further, as shown in FIG. 10, there is a system called a home bus system that uses a dedicated line, but each of them used a dedicated notification means. That is, in the case of FIG. 8, the monitoring signal from the monitoring sensor (1) is sent from the encoder (2) to the decoder (4) through the power line (3), and the output from this decoder (4) is received. An alarm sound and light were emitted from a speaker (5) and a lamp (6) dedicated to notification.
In the case of FIG. 9, the monitoring signal from the monitoring sensor (1) is temporarily modulated by the modulation circuit (7) (for example, AM, FM modulation) and transmitted, and after reception, the demodulation circuit (8) outputs the original signal. The alarm sound and light are emitted from the speaker (5) and the lamp (6) dedicated to the notification after demodulation. Further, in the case of FIG. 10, the monitor signals from the monitor sensors (1) (1 ') and the video camera (9) are sent from the encoder (2) through the dedicated bus line (10) to the monitor television image dedicated to the notification. It was sent to the machine (11), the camera image from the video camera was projected on the picture tube (11a), and the alarm sound was emitted from the speaker (11b). Here, (11c) is a video processing circuit.

However, in such existing home security system,
The system itself became large-scale, and the cost was high because a dedicated notification means was required.

By the way, recent television receivers have been further enhanced by standardization of remote control functions and external input terminals for video / audio. Specifically, the power supply is controlled by remote control (hereinafter referred to as remote control). ON / OFF, volume increase / decrease, tuning, etc. are possible, and by adding an external input terminal for video / audio, you can receive not only on-air TV programs but also VTR and C
It is possible to input video and audio from a D player, etc. Further, in a remote controller in which control signals of other remote controllers are stored and control is performed in accordance with this control signal, one remote controller can control a device with a remote controller function having a different signal form, such as a television receiver. It is becoming possible. Therefore, the number of occasions where the television receiver is used in the home is remarkably increased, and as a result, the television receiver is being positioned as an information station in the home.

For this reason, even if a home security system is constructed, depending on the location of the notification means, when a television program is being enjoyed on a so-called tea room television receiver, for example, a warning message or a warning voice may be missed. There was fear. Therefore, it is conceivable to use such a television receiver in the tea room as the notifying means, but if such a television receiver is used as the notifying means as it is, it is possible to inform the user while enjoying a television program, for example. This is a problem because it causes inconvenience such as not being present, and in particular, the content of the notification may be life-threatening if the matter is a serious situation such as gas leakage.

In order to solve such a problem, a so-called tea room television receiver used for receiving a television program at each home is used as a notification means, and it is necessary to notify even while watching a television program. Has applied for a security system that can be notified as Japanese Patent Application No. 63-206615.

However, the invention of the above-mentioned application is required to provide an instruction switch for instructing this state when the television receiver is turned off, such as at bedtime, and when the television receiver is turned off, The above instruction switch must be manually set. This is to judge whether or not it is necessary to turn on the power of the television receiver before the processing of the information when the emergency alert information or the like arrives, and if it is necessary, operate the remote controller first by the remote control operation. This is because the power must be turned on.

Problems to be Solved by the Invention As described above, the conventional home security system is
Since the system itself becomes large-scale and requires a dedicated notification means, the cost is high.

Also, in the case of using a television receiver in the home as an alarm notification means, when the television receiver is in the off state, this state is instructed, and when the monitor signal arrives, the power of the television receiver is turned on. As described above, an instruction switch for giving an instruction to the remote control is required, and if the operation of the instruction switch is mistaken, the television receiver, which is the output device of the alarm, remains off even if emergency alert information comes.
There was a serious problem as a security system in which it was not possible to issue an alarm.

The present invention aims to solve such problems.

Means for Solving the Problems In order to achieve the above-mentioned object, in the present invention, a monitoring means for monitoring a monitored part and generating a monitoring signal according to the monitoring state, and a monitoring signal input from the monitoring means are transmitted. Transmitting means for receiving the monitoring signal from the transmitting means, and receiving means for generating a control signal and a notification signal according to the monitoring signal,
In a security system provided with a remote-controllable television receiver which is an informing means for forcibly switching from another mode to an informing mode by a control signal from the receiving means and performing an informing based on the informing signal, Detecting means for detecting an operating state of the television receiver based on a video signal from the television receiver, and the monitoring means when the detecting means detects that the television receiver is in an off state. A remote control signal for turning on the television receiver in response to the reception of the signal, and a remote control for increasing the volume of the television receiver when the monitoring signal requires urgency. And a control means for transmitting a signal.

Operation With such a configuration, even when this television receiver is receiving a television program, when it is necessary to inform, the reception mode is forcibly switched to the notification mode, and the predetermined mode is set. You will be notified.

Further, when the monitoring signal arrives, even if the notification means is in the off state, this state is automatically detected by the detection means,
Since the notification means is turned on by the control means, the notification signal can be notified.

Embodiment Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

In Fig. 1, (12) is a monitoring unit that monitors the monitored parts such as the kitchen, the doorway, and the entrance, and generates monitoring signals according to the monitoring status, respectively, and (13) is installed in the kitchen and gas leakage occurs. A sensor for gas detection that detects a situation and generates a binary monitoring signal, and (14) is a sensor for human body detection that is installed at an arbitrary port and detects an intruder and generates a binary monitoring signal, ( 1
5) is a switch that is installed at the entrance and generates a binary monitoring signal when a visitor presses the call button, (16)
Is a surveillance video camera that operates when the call button is pressed and sends out the image of the visitor, (17) is a monitoring microphone that operates when the call button is pressed and sends out the voice of the visitor,
(18) A transmission unit that transmits each monitoring signal from the monitoring unit (12), and (19) replaces the monitoring signals from the sensors (13) (14) and the switch (15) with 8-bit unit length information code. After that, FSK (Frequency Shift Keying) conversion and output encoder (20) mixes video and audio signals from surveillance video camera (16) and surveillance microphone (17) with FSK signal from encoder (19). In the modulation circuit for post-modulation, the modulated output is transmitted from the transmission antenna (21). The replacement with the information code and the conversion into the FSK signal in the encoder (19) are performed as shown in FIGS. 2 to 4, for example. That is, the replacement with the information code is carried out in the form of an information code consisting of an 8-bit information type portion and an 8-bit number portion and an 8-bit synchronization code added at the beginning thereof as shown in FIG. The upper 4 bits of the information type portion and the number portion are all "1" or "0" for mutual identification, and the remaining lower 4 bits are used as actual data portions (see FIG. 3). ). For example, if the lower 4 bits of the information type portion represent a place such as a gate, an entrance, a kitchen, or a doorway, and the lower 4 bits of the number portion represent a type of a sensor, a switch, etc. at each place, one lower Since 15 combinations are possible with 4 bits (“0000” is not used), maximum of 15 × 15 = 225 for both.
It is possible to identify types of sensors, switches, etc. Here, the synchronization code is used to prepare for extraction (byte synchronization) of the next information code in the combination of “10101010”. Then, the conversion of the sync code and the information code thus replaced into the FSK signal is performed, for example, by using the frequency of the audible wave and making several cycles of 900 Hz correspond to "1" and several cycles of 450 Hz correspond to "0". , As shown in FIGS. 4 (a) and 4 (b). Here, FIG. 4A shows a signal waveform before modulation when only the FSK signal is transmitted, and FIG. 4B shows a signal waveform before modulation when the FSK signal and the video or audio signal are transmitted as a set.

The embodiment of the present invention does not consider the case where the data from the transmission unit (18) is only video and audio. At least the FSK signal must be transmitted. This is FSK
This is because the signal is always used as a remote controller for the television receiver.

(22) is a receiver that receives the modulated supervisory signal from the transmitter (18) and generates a control signal and a notification signal according to the supervisory signal, and (23) is a receiving antenna that receives the modulated supervisory signal. A demodulation circuit that receives at (24) and demodulates it to the original, (25) converts the FSK signal demodulated by the demodulation circuit (23) into "0" and "1" by filtering (see FIG. 4 (c)). Then, the serial / parallel conversion circuit for performing serial / parallel conversion 8 bits at a time, (26) is the serial / parallel conversion circuit (25) from the serial / parallel conversion circuit (25) transmitted through the bus line (27).
A control circuit (for example, 8-bit MPU) that monitors the synchronization code from the bit parallel data, decodes the following information code if there is a synchronization code, and outputs a control signal according to the decoded content (28 bits MPU), (28 ) Is a remote control encoder that replaces the control signal for the remote control from the control circuit (26) with a predetermined remote control code and then outputs the FSK signal after converting it.
(29) is a modulation circuit that modulates the FSK signal from the remote control encoder (28), and the modulation circuit (29) sends out the modulated output as a remote control signal by blinking the infrared light emitting diode (30). ing.

The control circuit (26) sends a remote control signal when the decoding up to the information code is completed. This remote control signal is basically the "external input" mode of the television receiver regardless of the content of the information code. Is a signal that specifies.

(31) uses the monitor video output terminal (50) of the television receiver (45) as a detection source, determines whether or not a video signal is output to the terminal (50), and determines whether or not a video signal is present. This is a video detection circuit that outputs a video detection signal ("1" or "0"), and the video detection circuit (31) is connected to the bus line (27). The video detection signal is a control code for the remote control transmission unit including the remote control encoder (28), the modulation circuit (29), the infrared light emitting diode (30), etc. to switch the television receiver (45) to "external input". In addition, a signal with a power control code for turning on the power of the television receiver (45) is transmitted, or only a control code for switching the television receiver (45) to "external input" is used. It is for selecting whether to transmit a signal. That is, this video detection signal uses any one bit of the data bus. For example, if "1" is set, a power supply control code is added from the remote controller transmission section and a control code for switching to "external input" is sent out, If it is "0", it is used for control to send only the control code for switching to "external input".

FIG. 5 is a block diagram showing a specific configuration of the video detection circuit (31). A video detection circuit (31) connected to a monitor (or video) output terminal (50) of a television receiver (45) has a binarization circuit (51) for binarizing a video signal.
A one-shot circuit (52) having a differentiating circuit consisting of a capacitor C, a resistor R, and the monitor output terminal (5
0), while the changing video signal is being output, the differentiating circuit detects the change in the video signal, and the output of the one-shot circuit (52), that is, the output of the video detecting circuit (31) is set to "1. "Keep at the level. Reference numeral (53) is a tri-state buffer provided between the one-shot circuit (52) and the bus line (27), which is enabled when the control circuit (26) looks at the state. Therefore, monitor output terminal (50)
When the video signal is not output to the television, the output of the one-shot circuit (52) becomes "0" level and the tri-state buffer (53) gives a signal of "1" level to the bus line (27). An instruction to send a signal with a power control code for turning on the power of (45) is issued. The circuit in Fig. 5 detects that the television receiver (45) is in the ON state from the change of the video signal, but the television receiver is in the energized state even if it is a non-raster signal. If there is a bias, the bias is applied. Therefore, if this is detected, it is possible to detect whether or not the receiver is in the energized state.

(32) is a demodulation circuit that receives a remote control signal from a remote control transmitter having a different signal form by the infrared photodiode (33) and demodulates it to the original, and (34) decodes the remote control signal demodulated by the demodulation circuit (32) Is a remote control decoder,
The remote control signal coded by the remote control decoder (34) is previously recorded and registered in a memory (not shown) in the control circuit (26) as a signal corresponding to each function key of the remote control transmitter. As a result, the remote control operation of the television receiver (45) including the remote control receivers having different signal forms becomes possible. (35) and (36) are for generating a character in which a computer image (characters, graphics, etc.) for notification and a computer sound corresponding to the contents of the information code decoded by the control circuit (26) are stored at predetermined address positions, respectively. In the ROM (abbreviated as CG-ROM) and the synthetic voice generation ROM (abbreviated as S-ROM), the reading is controlled by the control signal for addressing from the control circuit (26), for example, the decoded information. If the code is from the sensor (13), a so-called warning message "Gas is leaking" is output from the ROM (35) for character generation to generate synthetic voice.
The ROM (36) outputs a synthetic voice that repeats "danger, danger ...".

(37) and (38) are display RAMs (abbreviated as G (graphics) for temporarily writing the computer video / audio signals respectively sent from the character generation ROM (35) and the synthetic voice generation ROM (36). -RAM) and audio generation RAM (abbreviated as S-RAM), (39) are horizontal / vertical synchronization signals and color for converting the computer video signal read from the display RAM (37) into a television signal form. A television signal generation circuit that creates burst signals, synthesizes them, and outputs them as a black burst signal. (40) is a display RAM
A television as shown in FIG. 6 (c) by adding (mixing) a black burst signal as shown in FIG. 6 (b) to a computer video signal as shown in FIG. 6 (a) read from (37). Adder that outputs in signal form, (4
1) and (42) are display RAM (37) and voice generation RAM (38)
Either the computer video / audio signal sent from the computer or the camera video / microphone audio signal from the demodulation circuit (23) as shown in FIGS. 4 (d) and (e) is connected to the terminal (43) (44).
It is an output changeover switch which is switch-controlled by the control circuit (26) so as to output more.

Reference numeral (45) is a television receiver having a remote control function, video / audio external input terminals (46) and (47), and a video signal monitor output terminal (50), and the television receiver (45) is It has an infrared photodiode (48) for receiving a remote control signal from the infrared light emitting diode (30), and each external input terminal (46) (47) thereof has a transmitting section (2).
It is connected to the output terminals (43) and (44) of 2) with a connection cord.

Therefore, in the home security system having such a configuration, for example, when a visitor is present at the front door and the call button is pressed, a monitor signal is first generated in the switch (15) and the monitor video camera (6) and the monitor microphone (17) are generated. ), Camera image / microphone audio signals are generated respectively, and these are respectively transmitted through the modulation circuit (20) and the transmission antenna (21) (however, the monitoring signal of the switch (15) is once converted into an FSK signal by the encoder (19). After) will be transmitted to the receiver (22). Then, each of the transmitted signals is received by the receiving antenna (24) of the receiving section (22) and then demodulated by the demodulation circuit (23). This demodulated FSK signal makes a remote control signal to be given to the serial / parallel conversion circuit (25) and control circuit (26) for remote control operation of the television receiver (45), and the remote control encoder (28) , Will be transmitted to the television receiver (45) through the modulation circuit (29). In this case, the television receiver (45)
When the TV program is being received, the video detection circuit (31) gives a "0" level signal to the bus line (27), which indicates that the video signal is being detected. Instead, only the control signal for the remote control, which instructs the switching to the external input mode and the constant volume, is output.
When the television receiver (45) is off, a "1" level signal indicating that the video signal is not detected is output from the video detection circuit (31). Therefore, a power control code is added to the remote control control signal. The generated control signal is output. Furthermore, since the demodulated FSK signal is formed with audible frequencies of 900 Hz and 450 Hz, the output selector switch (4
2), the output terminal (44), and the audio external input terminal (47) are input to the television receiver (45), and the remote control operation forcibly switches the television program reception mode to the external input mode. The speaker of the television receiver (45) set to a constant volume outputs a so-called "pilopiro" sound as an alarm sound. Note that the FSK signal sounds different depending on the signal form (that is, the combination of "0" and "1"), so for example, if it is the sensor (13), it is the "Piropyropy" sensor (14). The sensor (13) or (14) can be used if the signal form is determined in advance so that it sounds like "pi-ro-ro".
Whether or not it is from the switch (15) can be identified by sound.

Then, the demodulated camera video signal is input to the television receiver (45) through the output selector switch (41), the output terminal (43), and the video external input terminal (46).
The camera image, that is, the appearance of the visitor will be displayed on the screen of the television receiver (45). At the same time, the demodulated microphone signal is output to the output selector switch (42) and output terminal (4
4), input to the television receiver (45) through the external input terminal (47) for audio, and the television receiver (45)
The microphone voice, that is, the voice of the visitor will be output from the speaker.

Therefore, when a visitor comes to the front door and presses the call button while enjoying a television program on the television receiver (45), the television receiver (45) changes from the reception mode to the external input mode ( That is, it automatically switches to the notification mode), the alarm sound by the FSK signal is heard from the television receiver (45), and the camera image from the surveillance video camera (16) is displayed, and at the same time, the surveillance microphone from the surveillance microphone (17) is displayed. Microphone sound will be output. If this is not a visitor to the entrance but an intruder near the doorway, the television receiver (4
After displaying the camera image from the surveillance camera installed in 5), switch the output selector switches (41) (42) to display the computer image from the display / sound generation RAM (37) (38). (For example, an intrusion position is displayed), and at the same time, a computer voice (for example, a so-called synthetic voice "There is an intruder near the door") is output and notified.

Next, for example, when a gas leak occurs in the kitchen while a family member is sleeping, a monitoring signal is first generated in the sensor (13), and the monitoring signal is converted into an FSK signal by the encoder (19), and then the modulation circuit (20), It is transmitted to the receiving section (22) through the transmitting antenna (21). Then, the transmitted signal is received by the receiving antenna (24) of the receiving section (22) and then demodulated by the demodulation circuit (23). The demodulated FSK signal is supplied to the serial / parallel conversion circuit (25) and the control circuit (26) for remote control operation of the television receiver (45) to generate a control signal for the remote control, and a remote control encoder (28 ), And is transmitted to the television receiver (45) through the modulation circuit (29). In this case, the television receiver (45) is in the off state because it is sleeping. Therefore, a "1" level signal indicating that the video signal is not detected is output from the video detection circuit (31), and a control signal for the remote control for switching to the external input mode and instructing the power-on together with the instruction of the high volume is output. Output. Specifically, the operation of the control circuit (26) at this time is based on the flowchart shown in FIG. That is, the control circuit (26) monitors the sync code from the 8-bit parallel data sent from the serial / parallel conversion circuit (25) sent through the bus line (27). First, in step (# 1), the sync code is monitored. If it is determined that the control signal for the remote controller is received, the process proceeds to step (# 2) to decode the information code that follows and to control the control signal for the remote controller according to the decoded content, that is, the instruction to switch to the external input mode. Prepare to output. Next, in step (# 3), an instruction to turn on the power is given depending on whether or not the video detection circuit (31) detects the video signal at the video monitor output terminal (50) of the television receiver (45). If it is "0" that the video signal is detected, proceed to step (# 4) to prepare to output the control signal for the remote controller that instructs only switching to the external input mode. It will be. When the power of the television receiver (45) is turned off while sleeping, etc., the signal "1" indicating that the video signal is not detected is given to the bus line (27) by the video detection circuit (31). Upon receiving this signal, the process proceeds to step (# 5) of the control circuit (26) to add a power-on instruction. After that, it is determined whether or not the contents decrypted in step (# 6) are of a type requiring urgency. If urgent is not required, the process proceeds to step (# 7) to add a constant volume instruction. However, if it is an urgent matter such as gas leakage, the process proceeds to step (# 8) to add a large volume instruction. Then, in step (# 9), the control signal for the remote controller in which the power-on instruction and the high-volume instruction are added to the instruction to switch to the external input mode is transmitted, and then the initial start state is returned to. At this time, ROMs for character generation and synthetic voice generation (35) (3
Computer video / audio signals from 6) RAM for display and audio generation (37) (38), output selector switches (41) (4)
2) Output terminals (43) (44) and video / audio external input terminals (46) (47) are input to the television receiver (45), the remote controller is turned on and external input A computer image, for example, a predetermined alarm message and an image displaying the location of the accident site are displayed on the screen of the television receiver (45) set to a high volume in the mode, and at the same time, the speaker of the television receiver (45) is displayed. A computer voice, for example, an alarm voice by voice synthesis will be output.

Therefore, if a gas leak is detected by the sensor while sleeping, the power of the television receiver (45) is automatically turned on and the mode is switched to the external input mode. Is displayed on the television receiver, and the computer sound is output from the speaker.

The television receiver used in this embodiment is not limited to a manufacturer or a model as long as it has a remote control function and an external input terminal for video / audio. Further, in the present embodiment, the camera video / microphone audio signal and the computer video / audio signal are separately input to the television receiver, but the so-called superimpose state in which both are input at the same time is set. In that case, the output changeover switch should be changed appropriately.

As described above, according to the present invention, since the existing television receiver is used as the notification means, it is possible to construct a security system at low cost and relatively easily. Moreover, according to the present invention, for example, even if the television receiver is receiving a television program, when it is necessary to notify, the mode is forcibly switched to the notification mode. Can be done. Also, even when the television receiver is powered off while sleeping, etc., the operating state of this notification device is automatically detected and the power is turned on, so that an urgent notification can be reliably performed without malfunction. You can

Further, in the present invention, since the operation state of the television receiver is determined based on the video signal from the television receiver, the current supplied from the indoor power source to the television receiver is detected. You don't have to.

Further, in the present invention, when the detection means detects that the television receiver is in the off state, a remote control signal for turning on the television receiver is transmitted in response to the reception of the monitoring signal. In addition, when the monitoring signal is urgent, a control means for transmitting a remote control signal for increasing the volume of the television receiver is provided, so that it is urgent in the event of a gas leak or the like. It is possible to surely notify the user of a serious accident that may affect the life of the user.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the system of the present invention,
2 and 3 are diagrams for explaining the replacement with the information code, FIG. 4 is a signal waveform diagram before and after the modulation / demodulation, FIG. 5 is a configuration diagram of a main part thereof, and FIG. FIG. 7 is a signal waveform diagram for explaining conversion into a television signal form, FIG. 7 is a flow chart of its control circuit, and FIGS. 8, 9 and 10 are diagrams showing conventional examples. (12) …… Monitoring unit, (18) …… Sending unit, (22) …… Reception unit, (26) …… Control circuit, (31) …… Video detection circuit, (45) …… Television receiver .

Claims (1)

[Claims] 1. A monitoring means for monitoring a monitored part to generate a monitoring signal according to the monitoring state, a sending means for sending a monitoring signal inputted from the monitoring means, and a monitoring signal from the sending means. A receiving means for receiving and generating a control signal and a notification signal according to the monitoring signal, and a notification means for forcibly switching from another mode to the notification mode by the control signal from the receiving means and performing a notification based on the notification signal. In a security system provided with a remote-controllable television receiver, a detecting means for detecting the operating state of the television receiver based on a video signal from the television receiver in the receiving means, and the detecting means. When it is detected by the means that the television receiver is in the off state, the television receiver is turned on in response to the reception of the monitoring signal. While sending a remote control signal to set the state,
A security system comprising: a control means for transmitting a remote control signal for increasing the volume of the television receiver when the monitoring signal requires urgency.