JPH0437479B2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention uses a time division multiplex transmission system to control,
This relates to an information wiring system that has the functions of a time division multiplex transmission system for monitoring and a monitoring system using a monitor TV, and its purpose is to improve the crime prevention and disaster prevention functions of ordinary houses,
Moreover, by recording and storing monitoring information, it is possible to confirm the information at a later date, and to provide an information wiring system in which visitors who are away can be identified at a later date.

The present invention will be explained below with reference to Examples. FIG. 1 shows a schematic configuration diagram of a time division multiplex transmission system that is the basis of the present invention. In this configuration example, the main control panel 3 is operated by the power of the power line 2 branched by the distribution board 1, and , power line 2 is drawn into each load control terminal device _{5 1} , 5 ₂ . . . as power for operating the controlled loads ₄ . The signal power sent through the two-wire signal line 6 using the division multiplex transmission method is full-wave rectified and used as its own operating power source, and this signal itself is read and used to control the controlled load 4.
It controls the Further, 7 in the figure is a sensor such as a disaster prevention or crime prevention sensor such as a gas sensor, and its output is sent to monitoring terminals 8 ₁ , 8 ₂
... is sent back to the main control panel 3 as a monitoring signal. The monitoring terminals 8 ₁ , 8 2 . . . are equipped with the load control terminals 5 ₁ , 8 _{2 . .} . in order to obtain power for operating the sensor 7.
Similarly to 5 ₂ . . . , power from power line 2 is drawn in.
Reference numeral 9 denotes a wall switch terminal, and operation switches 10 ₁ ,
The operating status of 10 ₂ ... is sent back to the main control panel 3 as a monitoring signal. FIG. 2a shows a waveform diagram of the time division multiplexed transmission signal transmitted from the main control panel 3 to the wall switch terminals 5 ₁ , 5 ₂ . . . , 8 ₁ , 8 ₂ . . . , 9. In this illustrated signal, a wide pulse represents a logic value "1", a narrow pulse represents a logic value "0", and one terminal device 5
₁ , 5 ₂ ..., 8 ₁ , 8 ₂ ..., 9, start pulse (pulse wider than 1 bit of logical value "1"), 8-bit address data AD for selecting a predetermined terminal, 1 Bit address parity AP, 5-bit control data CD that sets the control content for the called terminal, 1-bit control data parity CP, and long pulse LP that is the waiting period for the return signal are arranged in series. A signal is sent out, and this signal is sent out cyclically and repeatedly for each address one after another. Each terminal 5 ₁ ,
5 ₂ ..., 8 ₁ , 8 ₂ ..., 9 are the signal lines 6 as described above.
The above signal is taken in and it is determined from the data contents of the address data AD whether or not the call is for the self, and when it is determined that the call is for the self, the load control terminal 5 ₁ ,
In 5 ₂ . . . , the controlled load 4 is controlled to be turned on or off according to the contents of the control data CD. If the monitoring terminals 8 ₁ , 8 _{2 .} . . or the wall switch terminal 9 receives a call, the signal line 6 is short-circuited during the sending period of the return standby long pulse LP, as shown in FIG. 2b. sensor 7 or operating switch 10 ₁ in current mode;
10 ₂ ... are configured to be data transmitted. Of course, the load control terminals 5 ₁ , 5 ₂ . . . may also send back the operating state of the controlled load 4 as a monitoring signal as necessary. Now, the return signal sent back in the form of current mode is received by the main control panel 3 and sent to the monitoring terminals 8, 8.
...If the return signal is from the sensor 7, control is performed according to the monitoring purpose of the sensor 7, and if the return signal is from the wall switch terminal 9, each operation switch 10 ₁ , 10 _{2 is} controlled.
Load control terminal device 5 ₁ whose address is subordinated to...
5 ₂ In order to control the controlled load 4... (this dependency relationship is programmed in the main control panel 3 in advance), the terminal to which the controlled load 4... belongs is transmitted from the main control panel 3 in the same manner as described above. Control data CD will be created and sent to the devices 5 ₁ , 5 ₂ .

The present invention is based on such a time division multiplex transmission system, and the overall configuration is as shown in FIG. Reference numeral 11 in Fig _{. 3 is a control panel housing a plurality of load control terminals 5 1 , 5 2 .} A controlled load 4 such as a lighting load or a ventilation fan is connected to each of them. 1 in the diagram
Reference numeral 2 designates an operating power supply transformer for controlling each output relay _Ry by the control panel 11, regardless of the control of the time division multiplex transmission system. Reference numeral 13 denotes a control panel housing a plurality of monitoring terminals 8 ₁ , 8 ₂ . . . At the monitoring signal input terminals of these monitoring terminals 8 ₁ , 8 _{2 .} Detection signals from security detection switch ₇₂ consisting of a reed switch, heat detector ₇₃ which is a disaster prevention sensor,
Connect various sensor outputs such as the detection signal of a fire sensor such as a smoke detector ₇₄ or the detection signal of a gas sensor ₇₅ , or the switch signal of an emergency push button switch ₇₆ or an emergency call switch ₇₇ installed in a toilet, etc. There is. 14 is a transformer for supplying operating power to each sensor. The main control panel 3 includes a main operation switch 15 ₁ for operating the controlled loads 4 of each load control terminal 5 ₁ , 5 ₂ , and a pattern control operation switch for pattern control of the lighting loads. 16 ₁ ..., and various indicator lights 17 for crime prevention display, emergency display, fire display, gas leak display, etc., which are controlled based on monitoring signals from various sensors, and corresponding alarm sound (or sound) are provided. ) Alarm unit 25 equipped with a sound generating means for emitting
Furthermore, an electric lock operation unit 2 using a code number is used to control the intercom 18, the VTR set 19, the VTR controller 20, and the electric locks 21 ₁ and 21 ₂ provided at the entrance or back door.
2, and a color monitor TV 24 consisting of a color TV set with a video signal input terminal connected to the VTR set 19 and TV cameras 23 ₁ , 23 ₂ . . . installed at the entrance, back door, etc. The control circuitry connects the VTR controller 20, the electric lock operating unit 22, the alarm unit 25 and the intercom 18 to a time division multiplex transmission system. 26
₁ , 26 ₂ . . . are door phones connected to the intercom 18. Reference numerals 27 ₁ and 27 ₂ are operating sections for inputting a PIN number, which are provided on the electric locks 21 ₁ and 21 ₂ at the entrance and back door. Reference numeral 28 indicates intercom wiring connecting the intercom 18 and the door phone 26, and 29 indicates the electric locks 21 ₁ , 21 ₂ , input operation units 27 ₁ , 27 ₂ , and the electric lock operation unit 22 .
30 is the color monitor TV
There are 24 antennas.

The electric lock operation unit 22 unlocks the predetermined electric locks 21 ₁ and 21 ₂ when the numerical data entered through the input operation sections 27 ₁ and 27 ₂ matches the numerical data stored and set in advance. Alternatively, the operation switches 34 ₁ , 34 ₂ provided on the unit side
When is operated, the electric lock 21 ₁ ,
21 Configures the control unit that unlocks or locks ₂ , and also controls the control data of the main control panel 3.
Load control terminals 5 ₁ , 5 ₂ that perform control operations to unlock or lock the electric locks 21 ₁ , 21 ₂ based on the CD
It performs the same operation as... The VTR controller 20 constitutes first and second automatic recording control means that play a major role in the present invention.
The TV cameras 23 ₁ , 26 ₂ are connected to the operation signals of the door horns 26 ₁ , 26 2 .
23 ₂ ..., or the TV camera 23 ₁ ,
The video signals of 23 ₂ ... are sent to the color monitor TV 24 to display the images of the TV cameras 23 ₁ , 23 ₂ ..., or are recorded by a VTR set 19 such as a time-lapse type, and the main control panel 3
Displays characters and figures on the color monitor TV 24 by superimposing based on the control data CD from the controller, or displays the sub-control panel 31 as described below in response to the input of the operation signal (or detection signal).
It constitutes a terminal device having a function of returning a monitoring signal for creating a control data CD for the VTR controller 20' on the main control panel 3.

Similar to the main control panel 3, the sub-control panel 31 includes operation switches 15 ₁ ′ for operating the controlled loads 4 of the respective load control terminals 5 ₁ , 5 ₂ , and a pattern control operation switch 16 ₁ '... and an intercom 18' connected to the intercom 18' via a connecting line 28', and a sub-VTR controller 20' connected to the VTR controller 20 by a coaxial cable 33, and a sub-electric lock. It is equipped with an operation unit 22' and a sub-alarm unit 25'. Also provided is a color TV monitor 24' with a video signal input terminal similar to the color TV monitor 24. This sub-control panel 31 controls each operation switch 1.
5 ₁ and the operating status of the pattern control operation switches 16 ₁ ′... are sent back as return signals, and basically operate in the same way as the wall switch terminals 9 ₁ and 9 ₂ . Additionally, the sub-alarm unit 25' constitutes a load control terminal for the main control panel 3, and is used to control the blinking of the indicator light section 17',
The sound generation means is controlled by control data from the main control panel 3.
Furthermore, the sub electric lock operation unit 22' has the same structure as the wall switch terminals 9 ₁ , 9 ₂ , and operates the operation switch 34 ₁ corresponding to each electric lock 21 ₁ , 21 ₂ . ', 34 ₂ ' is sent back to the main control panel 3 as a return signal. The sub-VTR controller 20' basically constitutes a load control terminal device that has the function of returning a return signal, and receives control data CD from the main control panel 3 based on the monitoring signal of the VTR controller 20.
Based on the color TV monitor 24' and main control panel 3.
Controlling the combination with the video signal sent from the VTR controller 20 via the coaxial cable 33,
Alternatively, a return signal is sent to the main control panel 3 in response to an operation input from the operation section 69' to give commands for operating the TV cameras 23 ₁ , 23 ₂ . . . or recording the VTR set 19.

FIG. 4 shows a circuit block diagram of the VTR controller 20 provided in the main control panel 3. In the figure, 36 is an input port circuit section, which inputs various external signals and transmission signals of the time division multiplex transmission system, and is connected to the microcomputer. The signal is converted into a signal that can be taken into the central processing circuit section 37 consisting of the following, and is output to the central processing circuit section 37 via a bus line. The central processing circuit section of 37 is
This is a circuit section for signal processing and control of the VTR controller 20. Processing and control operations are performed according to a preset program, and various control signals and return signals for the time division multiplex transmission system are sent to the output port circuit section 39. It is now possible to output via . 38 is a clock circuit section, and this clock circuit section 38
performs a timer operation of the VTR controller 20, or literally a clock operation. 35 is a camera selection signal output from the output port circuit section 39
The camera changeover switch unit 35 is a camera changeover switch unit consisting of an electronic switch controlled by the CMS. In this embodiment, four TV cameras 23 ₁ to 23 ₄ can be selectively switched. ing. 40 is a camera changeover switch section 35
This is a synchronization signal reproducing circuit section for extracting each synchronization signal from the composite video signal inputted through the input circuit and supplying each synchronization signal to the character/design signal generation circuit section 41 at the next stage. Character 41: The symbol signal generation circuit section 41 is a circuit for creating characters, pictures, etc. indicating the day of the week, time, display contents, etc., and the character/design signals are sent to the TV camera 23 ₁ by the signal synthesis processing circuit section 42. This is to perform so-called superimposition by combining the video signals from 234 to ₂₃₄ . 43 is a distributor having a video signal amplification circuit, and this distributor 43 distributes the video signal to the color monitor TV 24' provided in the sub-control panel 31 and the local monitor TV 24''. 44 is the monitor TV power supply. Control signal
The switch section 44 is made up of a relay contact that is turned on and off by the POC, and the switch section 44 controls the power supply of the color monitor TV 24 on and off. Reference numerals 46 and 47 indicate switch sections composed of electronic switches, etc. These switch sections 46 and 47 are operated by the TV-VTR switching signal TVS, and the switch sections 46 and 47 are controlled in conjunction with each other, and The sections 48 are individually controlled, and when the switch sections 46 and 47 are set to the b contact side, the color monitor TV
24 has a video signal output end connected to its own video signal input end via a switch section 46, an audio signal output end connected to its own audio input end via a switch section 47, and a built-in tuner of the color monitor TV 24. The settings are made so that general T broadcasting can be received. When the switch parts 46 and 47 are turned on to the a contact, the video signal input terminal of the color monitor TV 24 is connected to the video signal output terminal of the VTR set 19, and the audio signal input terminal is connected to the audio signal output terminal of the VTR set 19. Connected to each color monitor
The TV 24 receives the reproduced video and audio signals from the VTR set 19, or the video signals from the TV cameras 23 ₁ to 23 ₄ and the audio signals from the door horns 26 ₁ to 26 ₄ via the circuits in the VTR set 19. The switch section 48 is controlled on and off, and is turned off when the VTR set 19 is in playback mode.
It is also turned on during recording and monitoring.
In the figure, 49 is a display light emitting diode driven by the camera selection signal CMS to display the selected TV camera, and 50 is a monitor TV ON display light emitting diode driven by the monitor TV power control signal POC. , 5 is a light emitting diode that indicates whether recording of the VTR set 19 is manual or automatic. Further, 52 is a power supply section for supplying power to each section.

FIG. 5 shows a circuit block diagram of the sub-VTR controller 20'. In the figure, 53 is a signal conversion circuit section of the time division multiplex transmission system, and the signal conversion circuit section 53 converts the received signal into a signal that can be taken in by the arithmetic control processing circuit section 54 at the next stage. The return data created by the arithmetic control processing circuit section 54 is converted into a return signal in a predetermined format. The arithmetic and control processing circuit section 54 is composed of a one-chip microcomputer, etc., and performs control processing operations according to a predetermined built-in program.
5, the set addresses are switched sequentially, and one terminal has the same function as multiple terminals, and the address data AD and the currently set Compare the addresses and if they match, take in the control data CD that follows the address data AD and generate a control output, or if the addresses match, take in a predetermined monitoring signal during the return waiting period and send a return signal. , the load control mode and the monitoring return mode are assigned using different addresses. The address counter circuit section 55 outputs a predetermined address setting signal to the arithmetic control processing circuit section 54 before a predetermined address is accessed in synchronization with the access of the main control panel 3. When an address is set in the monitoring return mode, the monitoring input corresponding to the address is outputted to the input signal switching circuit 56 of the input signal switching control signal so that it can be taken into the arithmetic control processing circuit 54. Decode circuits 57 and 58 serve as latches for decoding and latching the control output code of the arithmetic control processing circuit section 54, and the decode circuit 57 emits light to display the selected TV cameras 23 ₁ to 23 ₄ . A drive signal for lighting the diode 59 and a monitor TV switching signal MTS are generated and output.
On the other hand, 58 decoding circuits were installed in the main control panel 3.
A signal for driving a light emitting diode 60 indicating whether recording of the VTR set 19 is automatic or manual is generated and output. 61 is connected to the main control panel 3 via the coaxial cable 33
Connect the video signal sent from the monitor TV switching signal MTS to the video signal input end of the color monitor TV 24', or connect the video signal output end of the color monitor TV 24' to its own video signal input end. A video signal amplification circuit section 62 is inserted between the common terminal and the video signal input terminal of the color monitor TV 24'. 63
is a changeover switch section consisting of an electronic switch that works in conjunction with the changeover switch section 61, and the changeover switch section 63 is for connecting the audio signal output end of the color monitor TV 24 to its own audio signal input end or opening it. It is. Incidentally, if necessary, the connection line 28' of the intercom 18' may be connected to the a contact point to enable communication with the door phones 26 ₁ to 26 ₄ . 64 is a monitor TV ON/OFF signal. When MTC is input, a switch part 65 consisting of a relay contact is turned on and off according to the signal, and the color monitor is turned on and off.
This is a monitor TV on/off control circuit section that turns on and off the power of the TV 24' and drives a light emitting diode 66 that displays the on/off state of the color monitor TV 24'. In the figure, 67 is a power supply section that supplies power to each section.

FIG. 6 shows the front panel of the VTR controller 20, and the panel 68 has a TV camera 23 ₁
~23 Camera selection switch compatible with ₄ 70 ₁ ~7
₀₄ , a manual recording set switch ₇₀₅ for setting manual recording, an automatic recording set switch ₇₀₆ for setting automatic recording, a power supply switch ₇₀₇ for the color monitor TV 24, and an operating section 71 for each switch ₇₀₁ to ₇₀₇ . Corresponding display light emitting diodes 49 ₁ to 49 ₄ , 51 ₁ , 51 ₂ , and 50 are provided above the operating section 71, respectively. 72 is an energization indicator lamp of the VTR controller 20. Now, each switch and light emitting diode of this panel 68,
The power indicator lamp is placed on the secondary VTR controller 2.
0' is also equivalent as shown in FIG. On the other hand, a setting switch operating section 74 of the clock circuit section 38 is disposed on a panel 73 provided at the lower left of the panel 68 in FIG.

Next, the operation of the information wiring system of the present invention will be shown on a VTR.
The explanation will focus on the controller 20 and the sub-VTR controller 20'. Additionally, wall switch terminal 9 ₁ ,
9 ₂ , load control terminals 5 ₁ , 5 ₂ ..., monitoring terminals 8 ₁ , 8 ₂ ..., and the operations and relationships in the time division multiplex transmission system between the sub control panel 31 and the main control panel 3 are basically Since this is the same as the system shown in Figure 1, the explanation will be omitted.

First, turn on the power to the entire system and initialize the system. At this point, the time of the clock circuit section 38 has not been set, so the time is set. This time setting uses the setting switch operating section 74, and when the set button ₇₄₁ and minute button ₇₄₄ are operated, the "minute" setting is changed to the setting button 74.
Operating the ₄₁ and hour and minute buttons ₇₄₃ allows you to set the hour, and operating the set button ₇₄₁ and day of the week button ₇₄₂ allows you to set the day of the week.The time adjustment signal TM is sent to the input port circuit 36, center The clock circuit section 38 is inputted through the arithmetic processing circuit section 37 and the output port circuit section 39, and time adjustment is performed. The current time is digitally displayed on a time display section 75 used on the panel of the main control panel 3.

Now, when the system is started, the monitoring terminal 8
The presence or absence of detection by the sensors 7 ₁ , 7 ₂ ... of the sensors 7 1 , 7 ₂ ... is monitored by the control circuit section (not shown ₎ of the main control panel 3, and the monitoring results are determined depending on the content and location. Control data is sent as control data from the main control panel 3 together with the assigned address data AD, and is sent for each address by the central processing circuit unit 37 of the VTR controller 20, which has an address corresponding to each address data AD. From the contents of
Detection contents such as a fire outbreak, presence of an intruder, emergency call, gas generation, etc., as well as the location of the occurrence, are determined. The central processing circuit section 37 is assigned addresses as described above as a terminal device of a time division multiplex transmission system, and performs the above-mentioned judgment operation based on the control data sent when each address is accessed. The presence or absence of the operation signal VS of the call switches (or the detection signal of the visitor sensor) of 26 ₁ to 26 ₄ is determined. If sensor 7 ₁
If there is no detection signal or operation signal, the arithmetic central processing circuit unit 37 determines the presence or absence of the manual camera selection signal TCS of the TV cameras 23 ₁ to 23 ₄ and the manual recording set signal.
Monitor TV with or without MVT, color monitor TV20
The presence or absence of the on and off signals MTC is sequentially determined.
If the power on switch 70 ₇ of the operation unit 71
When the monitor TV on/off signal MTC is generated, the central processing circuit section 37 outputs the signal POC through the output port circuit section 39 to turn on the switch section 44 and turn on the color monitor TV 24.
Turn on. At the same time, the power on is indicated by light emission from the light emitting diode 50. At this time, the fourth
In the state shown in the figure, the color monitor TV 24 can receive general broadcasts. Further, when the power-on switch ₇₀₇ of the operation section 71 is turned off, the central processing circuit section 37 turns off the color monitor TV 24, simultaneously turns off the light emitting diode 50, and initializes the system except for the timetable.

Next, the camera selection switch 70 ₁ ~ of the operation section 71
When an appropriate switch of 70 ₄ is turned on, the manual camera selection signal TCS is input to the central processing circuit section 37 via the input port circuit section 36 , and the central processing circuit section 37 inputs the manual camera selection signal TCS via the output port circuit section 39 . outputs the camera selection signal CMS, switches the camera changeover switch section 35, inputs the video signal of the TV camera into the VTR controller 19, and at the same time lights up the light emitting diode 49 corresponding to the TV camera, indicating that it is in use. Display. At the same time, the sub-VTR controller 20' allows selection.
The control data for lighting the light emitting diode corresponding to the TV camera is sent as a return signal to the main control panel 3, and the light emitting diode 59 of the sub-VTR controller 20' is lit via the main control panel 3. Determine which TV camera is present.
It is also displayed on the VTR controller 20'. Now, when the selected TV camera is turned on, the presence or absence of its connection is determined based on the presence or absence of the input of the camera connection presence/absence judgment signal CMC. A superimpose is generated, and the character signal of the current time and the video signal of the TV camera are combined based on the current time data of the clock circuit section 38. Next, color monitor TV2
Turn on 4 using the same operation as above. in this case
Since the TV camera is activated, the switch unit 46 is switched from the B contact to the A contact by the TV-VTR switching signal VTS consisting of a code signal, and the composite video signal is transmitted through the VTR set 19 and the switch unit 46 to the color The image captured by the TV camera is input to the monitor TV 24 and displayed along with the digits of the time display.

If the manual recording set switch ₇₀₅ is turned on and the manual recording set signal MVT is input, the central processing circuit section 37 sets the VTR set 19.
is activated to enter the recording state, and at the same time the light emitting diode ₅₁₁ is turned on to indicate that manual recording is being set. In addition, the light emitting diode 66 of the sub-VTR controller 20' indicates that manual recording is being set.
The control data is sent to the main control panel 3 as a return signal in order to light up and display it on the sub-VTR controller 20' as well. When this transmission is completed or the manual recording set is not performed, the sensor 7 ₁ ...
The determination of the presence or absence of the detection signal or operation signal is performed in the same manner as described above. If this determination is "NO", it is determined whether another TV camera has been manually selected; if this determination is "NO", the on/off state of the color monitor TV 24 is determined; if it is "NO", the on/off state of the color monitor TV 24 is determined; A time elapse of "3 minutes" is determined. These three minutes are the time until the color monitor TV 24 is automatically turned off unless it is turned off manually. Now, when three minutes have elapsed or the color monitor TV 24 is turned off, the display by the above-mentioned light emitting diode 50 is stopped. Of course, the central processing circuit section 37 creates data to stop the display of the light emitting diode 60 of the sub-VTR controller 20' via the main control panel 3, and outputs the data to the main control panel 3 via the output port circuit section 39.
Send it back to

Now, when the color monitor TV 24 is turned off, the central processing circuit section 37 simultaneously turns off the light emitting diode 50 that was indicating the status of the color monitor TV, stops the above-mentioned recording, turns off the selected TV camera, and turns off the corresponding light emitting diode. 49 is turned off.
At this time, the data is sent to the main control panel 3 in order to also turn off the light emitting diode 59 of the sub-VTR controller 20'.
Send it back to Then, initialize the system except for the time display. At this time, the switch part 46 also
Switches from contact to b contact.

Next, when a visitor arrives and, for example, presses the operation button of the door phone 26 ₁ , the central processing circuit unit 37 sends the camera selection signal CMS of the TV camera 23 ₁ provided corresponding to the door phone 26 ₁ to the output port circuit. Camera switching section 35 via section 39
The video signal of the TV camera 23 ₁ is input by switching the TV camera 23 ₁ and turning on the color monitor TV 24 . This selection of the TV camera 23 ₁ is displayed by the light emitting diode 49 ₁ and also by lighting the light emitting diode 59 of the sub-VTR controller 20' via the main control panel 3. Next, the central processing circuit section 3
7 turns on the color monitor TV 24 and displays the on state by lighting the light emitting diode 50. Then, the character/design signal generation circuit section 41 is activated, and the number of the TV camera ₂₃₁ used, the design indicating the visitor, the location, and the characters and numbers of the time are monitored in color.
Show TV24. Then, the presence or absence of the automatic recording set signal AVT is determined by the central processing circuit section 37, and if the signal AVT is input, the VTR set 19 is activated to record an image based on the composite video signal of the signal composition circuit section 42. . During this recording, the central processing circuit unit 37 determines the reception of the detection data of each sensor 7 ₁ from the main control panel 3, and if the sensor 7 ₁ is given priority over the visitor detection operation according to a predetermined order. When detection data is received from ..., the process jumps to a sensor processing routine described later. It is also determined whether the manual camera selection signal TCS of the TV cameras 23 ₁ to 23 ₄ is input or not, and if there is an input, the process jumps to the processing routine for manual selection of the TV cameras 23 ₁ to _{23 4} described above. Now, until 3 minutes have passed, the color monitor TV 2
4 is not manually turned off, the central processing circuit section 37 automatically turns off the color monitor TV 24, operates in the same manner as when manual selection is made, and initializes the system. Also, if there is a manual off, the operation will be the same as after the automatic off, and the system will initialize.

Next, the sensor processing routine will be explained. First, in the central processing circuit section 37, priorities are set in advance for operations based on the detection data of the sensors 7 _{1 .} . . , and operations are performed based on this priority order of processing order. Now, when the detection data of sensor 7 ₁ ... is sent via the main control panel 3 of the time division multiplex transmission system, it is first determined whether it is a disaster prevention-related sensor or a crime prevention sensor, and then the disaster prevention-related sensor 7 If the data is from ₃ to 7 ₅ , the central processing circuit unit 37 causes the character/design signal generation circuit unit 41 to generate a superimpose of a pattern, character, time, location, etc. indicating the content corresponding to the data. , color monitor TV
24 to display the superimpose. Further, if the automatic recording set signal AVT is input, the VTR set 19 is operated and recorded. In this case, while the detection data from the sensor is being received, the superimposed image is displayed on the color monitor TV 24, and when the sensor detection data disappears, the image is displayed under the control of the central processing circuit section 37. with color monitor
The TV 24 is turned off and the system is initialized. The central processing circuit section 37 controls each section in the same manner as described above while receiving detection data of the emergency push button switch 7 ₆ and the emergency call switch 7 ₇ among sensors other than those related to disaster prevention. On the other hand, security related sensor 7
If detection data ₁ to 7 is received, the central processing circuit unit 37 first activates the TV camera ₂₃₁ to reproduce the synchronization signal, and also activates the color monitor TV2.
4 is turned on, and the same processing operations as those for the above-mentioned visitor are performed, and the text/symbol signal generation circuit section 41 generates a pattern/character/character indicating the location/time to notify of the intrusion.
It generates numbers and superimposes them. When the automatic recording set signal AVT is input, the VTR set 19 records the image displayed on the color monitor TV 24. The central processing circuit section 37 operates for a predetermined period of time (for example, 5 to 10 minutes).
seconds), the superimpose is stopped and only the image of the TV camera ₂₃₁ is displayed on the color monitor TV 24. When the image of the TV camera ₂₃₁ is displayed for 10 seconds, for example, the image is switched to the superimpose mode and displayed on the color monitor TV 24. After a predetermined period of time has elapsed, the camera changeover switch section 35 is operated to switch to the TV camera ₂₃₂ and display the image of the TV camera ₂₃₂ . In this way, the superimposition and the TV camera image are alternately switched, and the TV camera images are sequentially switched. This superimposition and sequential switching are performed until no sensor data is input. When the sensor detection data disappears, the central processing circuit section 37 turns off the color monitor 24 and performs a series of operations leading to system initialization. In addition, the above superimpose
Of course, it is also possible to set the period of time during which the image of the TV camera is displayed to be automatically turned off. Also, even during the above-mentioned operation, the central processing circuit section 37
detects and determines whether or not detection data is received from a sensor higher than the current sensor rank, whether there is a manual switching request for the TV cameras 23 ₁ to 23 ₄ , and whether there is an off input for the color monitor TV, and determines whether the sensor with a higher rank If there is an input, the process returns to the first superimpose processing operation of the sensor processing routine, and the TV camera 23
When the manual camera selection signal TCS ₁ to ₂₃₄ is input, the process jumps to the manual selection routine described above, and when the color monitor TV 24 is turned off, a series of operations leading to system initialization are performed. Furthermore, the switching data of the TV cameras 23 ₁ to 23 ₄ described above is sequentially sent back to the main control panel 3 of the time division multiplex transmission system, and the switching data of the TV cameras 23 1 to 23 4 are sent back to the main control panel 3 of the time division multiplex transmission system,
The camera to be used is displayed on the light emitting diode 59 of the VTR controller 20'. Of course, in the VTR controller 20, the central processing circuit section 37 sequentially turns on the light emitting diodes 49 ₁ to 49 ₄ according to the camera selection signal CMS outputted to the camera selection switch section 35 via the output port circuit section 39 to select the camera to be used. Display. When the main control panel 3 receives the detection signal from the sensor, it sends control data to the alarm units 25 and 25' and performs a control operation to generate an alarm sound.

Now, when you want to play back images recorded with the VTR set 19 as described above, press the playback button after rewinding the magnetic tape in the VTR set 19. Reproduction judgment signal from 19
The PLC inputs the central processing circuit section 37 and outputs the monitor TV power control signal POC to the port circuit section 39.
By outputting more output and turning on the switch section 44, the color monitor TV 24 is turned on, and at the same time, the color monitor TV 24 is turned on.
The TV-VTR switching signal TVS is output to switch the switch sections 46 and 47 from the B contact to the A contact, and at the same time turn off the switch section 48, and set the TVR set 19.
The video and audio signals are input to a color monitor TV. If you want to stop this playback operation, press the stop button on VTR set 19, and the above signal will be played.
The PLC no longer inputs to the input port circuit section 36,
The central processing circuit section 37 includes switch sections 46 to 48.
is returned to its original state and the color monitor TV 24 is turned off. Also, when the detection data of each sensor is received during playback, the central processing circuit section 37 skips the operation according to a predetermined processing rate, superimposes and displays the images of the TV cameras 23 ₁ to 23 ₄ ,
When sensor detection data is no longer received, the screen is automatically switched to the one played by VTR set 19.

Figures 7a to 7e show images of the superimposition, with Figure 7a showing the case when the emergency push button switch ₇₆ was pressed in the child's room, and Figure 7b showing the case when the fire sensor installed in the kitchen was activated. In addition, Figure c shows the case where the gas leak sensor ₇₅ detects a gas leak in the bathroom, and Figure d shows the case where the emergency call switch ₇₇ is turned on from the third floor. Furthermore, Figure e shows a case where a security sensor installed in the garden detects an intruder, and in reality, the background color of the superimpose is divided for each case, and you can tell by looking at the color. This allows you to see the cause of the problem at a glance.

The above VTR set 19 can be recorded using the automatic recording set switch ₇₀₆ or the manual recording set switch 7.
The central processing circuit unit 37 determines the recording mode by inputting ₀₅ , but in this case, the TV
If a manual recording set signal MVT is input during manual selection of cameras 23 ₁ to 23 ₄ or detection of various sensors, central processing circuit section 37 causes VTR set 19 to perform recording operation. Further, if the automatic recording set switch ₇₀₆ is set in advance, the VTR set 19 is automatically put into recording operation under the control of the central processing circuit section 37 when detection data from each sensor is received. In FIG. 4, VTRCS indicates the control code signal of the VTR set 19.

By the way, the above description of the operation mainly focuses on the operation of the VTR controller 20, but next, the monitor control operation of the sub-VTR controller 20' will be explained. First, the sub-VTR controller 20' uses the operation switches of the operation section 69 to output the manual camera selection signal TCS, automatic recording set signal AVT, manual recording set signal MVT, and monitor TV on/off signals.
The MTC can be input as a monitoring signal to the arithmetic processing circuit section 54 via the input signal switching circuit 56, respectively, and these inputs are performed under the control of the address counter circuit section 55. When each monitoring input is taken into the arithmetic and control processing circuit section 54, the arithmetic and control processing circuit section 54 sends it back to the main control panel 3 as a return signal, and then sends it to the VTR controller 20 via the main control panel 3. It's starting to send data.

On the other hand, the VTR controller 20 functions as a terminal of the time division multiplex transmission system, and when the above-mentioned data is transmitted from the main control panel 3 as control data, it generates a camera selection signal CMS and an automatic or manual recording set signal AVT or MVT. The switch units 35, 46, and 47 are activated to perform the same control as when the switches 70 ₁ to 70 ₆ of the own operating unit 71 are operated. Also VTR controller 20
Based on the control data transmitted from the main control panel 3, the sub-VTR controller 20' displays the selected cameras ₂₃₁ to ₂₃₄ by lighting the light emitting diodes 59, 6
Color monitor TV 2 displays images from video signals from the VTR controller 20 side, which switches between 3 and 3.
4' performs control operations such as displaying images.
Monitoring can also be performed at the location where the sub control panel 31 is installed.

In addition, in the above-mentioned place when guests come, if the family is away, doorphone 26 and intercom 18, 18'
Since calls cannot be made via the door phone 2
By simultaneously recording the audio signals of 6 by the VTR set 19, the requirements of the guests can be recorded. Furthermore, in the above embodiment, priority is set in advance so that if another doorphone is operated while the doorphone (or visitor sensor) is being operated, the TV cameras 23 ₁ to 23 ₄ are switched to display the new visitor. .

As described above, when a detection signal is input from the visitor detection means, the present invention activates a TV camera that takes a picture of the vicinity of the installation location of the detection means, displays the image taken by the TV camera on a monitor TV, and displays the image.
A first automatic recording control means that records for a certain period of time with the VTR set, and the above-mentioned time division that sends monitoring data from security sensors, disaster prevention sensors such as gas leakage and smoke detection as return signals to the main control panel via the signal line. If the control data of the transmission signal transmitted from the main control panel via the signal line based on the monitoring data of the return signal of the terminal device of the multiplex transmission system is control data corresponding to the operation of the security sensor, intrusion information is detected. The indicated characters, designs, etc. are displayed on the monitor TV in superimposition, and the TV camera is operated one after another for a certain period of time alternately with this superimposition, and the image taken by the TV camera is displayed on the monitor TV. The image to be displayed is recorded by the VTR set, and if the control data corresponds to the operation of the disaster prevention sensor, the occurrence information is superimposed and displayed on the monitor TV, and the image to be displayed on the monitor TV is recorded by the VTR set. Since it is equipped with two automatic recording control means, one monitor TV and a VTR set can be used based on the two information of the visitor notification system and the crime prevention and disaster prevention monitoring and control system using time division multiplex transmission. It can automatically monitor surveillance images from TV cameras and record the monitor contents, and is also useful for crime prevention and disaster prevention.
By displaying superimposed information on TV, you can be sure to notify the situation, family members can immediately understand what is being monitored, and take prompt action, and images recorded with a VTR set can be used as evidence later. Also, when responding to crime prevention sensors, the installed TV cameras are activated one after another, which has the effect of allowing the user to grasp the gist of each location while responding. Furthermore, crime prevention and disaster prevention systems can be constructed using time-division multiplex transmission systems.
It has the advantage that the number of wires is small, it can be easily connected to the second automatic recording control means, and it can be easily installed in a location convenient for wiring the visitor notification system.

[Brief explanation of drawings]

FIG. 1 is a circuit block diagram of a time division multiplex transmission system which is the basis of the present invention, FIG. 2 is a waveform diagram of the same signal used in the above, and FIG. Figure 4 is a circuit block diagram of the VTR controller shown above, and Figure 5 is the sub-VTR shown above.
The circuit block diagram of the controller, Figure 6, is the same as above.
The front view of the panel section of the VTR controller, Figure 7, is an image example of the same superimpose as above, and 3
is the main control panel, 5 ₁ ..., 8 ₁ ..., 9 ₁ ... is the terminal device, 7
1 is a sensor, 19 is a VTR set, 20 is a VTR controller, 23 ₁ . . . is a TV camera, and 24 is a color monitor TV.

Claims (1)

[Claims] 1. A transmission signal is sent from the main control panel via a signal line by time division multiplexing to sequentially call the terminals, and the called control terminal uses the control data of the transmission signal. In an information wiring system equipped with a time-division multiplex transmission system that performs control operations and returns monitoring data as a return signal to the main control panel during a return waiting period in a monitoring terminal, a visitor detection means such as a visitor sensor or a door phone; A plurality of TV cameras are provided to take pictures of the vicinity of the place where the visitor detection means is installed, and when a detection signal from the visitor detection means is input, the TV cameras are activated to take pictures of the vicinity of the place where the visitor detection means is installed. a first automatic recording control means for projecting an image from a camera and recording the image for a certain period of time on a VTR set; a security sensor;
Based on the above-mentioned time-division multiplex transmission system terminals that send monitoring data from disaster prevention sensors such as gas leakage and smoke detection as return signals to the main control panel via signal lines, and the monitoring data of the return signals from these terminals. If the control data of the transmission signal transmitted from the main control panel via the signal line is control data that corresponds to the operation of the security sensor, characters, patterns, etc. indicating intrusion information are displayed in superimposition on the monitor TV. In addition, alternately with this superimposition, the TV camera is sequentially operated for a certain period of time, and the image taken by the TV camera is displayed on the monitor TV, and the image is displayed on the monitor TV.
If the control data corresponds to the operation of the disaster prevention sensor, the occurrence information is superimposed and displayed on the monitor TV, and the image displayed on the monitor TV is recorded with the VTR set.
An information wiring system comprising: second automatic recording control means for recording with a VTR set. 2. The information wiring system according to claim 1, further comprising a switching means for switching the recording operation of the VTR set between automatic and manual based on the detection signal of the visitor detection means.