JPH0831194B2 - Monitoring device - Google Patents

Description

Description: TECHNICAL FIELD OF THE INVENTION The present invention controls a plurality of television cameras on the premises of a building or on the premises of a factory, and switches a monitoring image by a signal of a sensor or the like. Regarding monitoring equipment.

[Conventional technology and its problems]

Conventionally, in a monitoring device that controls two or more TV cameras at remote locations and monitors images, in the case where images are forcibly switched by a detection signal from an intrusion sensor or the like, the configuration shown in FIG. 6 is used. Was using. In the figure, the control state of the operation device 11 is transmitted to the controllers 14 and 15 via the control signal lines 12 and 13, and the TV cameras 16 and 17 are controlled. And this TV camera 1
Image signal from 6,17 image transmission line 18,1 such as coaxial cable
The image signal is transmitted to the image signal switching device 20 via 9, and the switching device 20 is controlled by the operation device 11 to monitor the image on the monitor TV 21. Further, the signal of the sensor 22 is input to the switch 20 via the sensor signal transmission path 23. When the sensor 22 is turned on, the switch 20 is forcibly controlled and the image signal is monitored by the monitor TV21.

According to the above-mentioned configuration, not only is it necessary to individually lay the control signal lines 12 and 13 and the image transmission paths 18 and 19 for the controllers 14 and 15 located at a location distant from the operating device 11, Furthermore, it is necessary to dispose the separate line 23 for transmitting the sensor signal to the switch 20, which results in a lot of wiring work and a high cost.

Therefore, as shown in FIG. 7, the operating device 24 and the controllers 25, 26 are
Are connected by a bus-shaped control signal line 27, and output switching devices 28, 2
9 is provided on the controller 25, 26 side, and the TV camera 30,
It is conceivable to connect the transmission line 33 of the image signal to the monitor TV 32 in a bus shape by controlling the image signal output from the device 31. In this way, only the control signal line 27 and the image transmission path 33 need be sequentially connected between the operation unit 24 and the controllers 25 and 26. However, in this configuration, in order to perform the switching control of the image signal by the sensing signal from the sensor 34, the sensor 34
Therefore, it was necessary to individually connect the output switching devices 28 and 29 with the control signal lines 35 and 36.

As described above, in the configuration of FIG. 7, the wiring between the manipulator 24 and the controllers 25 and 26 becomes easy, but on the other hand, the sensor 34
To the output switching devices 28 and 29, wirings 35 and 36 are required, which makes wiring work complicated and increases costs.

[Object of the Invention]

The present invention has been made in view of the above points, and is a monitor capable of realizing wiring simply and at low cost for interrupting transmission / reception of a control signal between operating device controllers by a sensing signal from a sensor. The purpose is to provide a device.

[Main points of the invention]

INDUSTRIAL APPLICABILITY According to the present invention, an operating device, a controller, a sensor, etc. are sequentially connected in a bus form, and a monitor TV, an output switching device, etc. are also connected to the bus, and the control signal of the operating device is irrelevant to the detection signal of the sensor In addition, the necessary image signal of the TV camera is forcibly switched and sent to the monitor TV.

Example of Invention

 An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows the configuration, 41 is an operating device, 42, 43
Is a control signal line, 44 and 45 are controllers, 46 and 47 are TV cameras mounted on pans 48 and 49, 50 and 51 are output switching devices, 52 and 53 are image transmission paths, 54 is a sensor, 55 is a signal line and 56 is a monitor TV.

The operation device 41 and the controllers 44, 45 are connected by control signal lines 42, 43 configured in a bus shape, and the control signal output from the operation device 41 is sent to the controllers 44, 45. The controllers 44 and 45 are mounted on the platform 48 and 49 according to the control signals sent thereto.
The V cameras 46 and 47 are controlled to obtain an image signal. This image signal is sent to the output switches 50 and 51. Output switch 5
The 0, 51 and the monitor TV 56 are connected by a bus-shaped image transmission path 52, 53, and an image signal from the output switching device 50, 51 is transmitted through the image transmission path 52, 53. Sent to the monitor TV56 and displayed as an image. Further, the signal line 53 for transmitting the detection signal of the sensor 54 for alerting an intruder or the like is connected to the control signal lines 42, 43 in the form of a bus.

In the above configuration, when the sensor 54 is in the off state, the control command from the operation device 41 is transmitted to the controllers 44 and 45 via the control signal lines 42 and 43, and output as the TV cameras 46 and 47. Switch 5
By controlling 0 and 51, a desired image can be monitored on the monitor TV56. When the sensor 54 is turned on, the sensor 54 outputs data indicating the on state to the control signal lines 42 and 43 via the signal line 55, and the data is transmitted to the operation unit 41 and the controllers 44 and 45. The image signal can be forcibly switched independently of the control state of the operation device 41.

 Next, the operation of the above embodiment will be described.

FIG. 2 shows an off state in which the sensor 54 is not in the sensing state. At this time, the operator 41 sends control information “1” “2” to the two controllers 44, 45 on the control signal lines 42, 43. To output sequentially.

Further, FIG. 3 shows the case where the sensor 54 is in the sensing state (ON). The sensor 54 is connected via the signal line 55 regardless of the output state of the operation device 41 shown in FIG. Data "D" indicating the sensing state is shown on the control signal lines 42 and 43 in FIG. 3 (c).
Output as shown. The data "1" and "2" output from the controller 41 and the data "D" output from the sensor 54 collide on the control signal lines 42 and 43 as shown in FIG. . Therefore, the operating device 41 compares the output data with the input data, and if there is a difference in the data, the operating device output is stopped as shown in FIG. Only the data “D” of the above is available, and the sensing states can be correctly received by the controllers 44 and 45 and the operator 41.

In the following FIG. 4, the control data is output from the operating device 41 intermittently as shown in FIG.
When the sensor 54 is in the detection state as shown in FIG. 4B, the sensor 54 detects the vacant space on the control signal lines 42 and 43, and data indicating the detection state during that period as shown in FIG. 4C. It is designed to output "D". As a result, without causing data collision as shown in FIG.
The detection signal can be transmitted. Further, the control information can be transmitted from the operation unit 41 to the controllers 44 and 45 while transmitting the detection signal.

As shown in FIG. 5, by transmitting the response data “A” from the operation unit 41 to the detection signal “D” from the sensor 54, the sensor 54 continuously transmits the detection signal during the detection state, and the control signal It may be possible to prevent the lines 42 and 43 from being occupied.

According to the configuration as shown above, the operation unit 41, the controller
44, 45, sensor 54 are connected in the order of bus, and monitor T
Since the V56 and the output switching devices 50, 51 are connected in a bus shape, the monitoring place where the operating device 41, the monitor TV56 is installed, the control devices 44, 45, and the TV cameras 46, 47 are installed. Even when the positions of the monitoring point and the sensor 54 are far apart, the control signal lines 42, 4
3 and the image transmission paths 52 and 53 may be sequentially connected, and since there is no restriction on the order of connection, it is possible to wire with the shortest path, and as a result, the wiring is easy and the wiring cost is low. Can be reduced.

Further, the control signal and the image signal are frequency-multiplexed and transmitted to one cable, for example, a coaxial cable or an optical fiber cable, so that it is possible to further reduce the cost associated with the cable wiring.

The present invention is not limited to the configuration of the above embodiment, and the same effect can be obtained when a plurality of operating devices, controllers, sensors, etc. are connected to the same bus-shaped signal line. .

It is also possible to receive the detection information of the sensor in the operating device and extract the detection signal by a buzzer sound or an external output.

〔The invention's effect〕

As described in detail above, according to the present invention, the wiring between the operation unit and the control unit can be sequentially connected in a bus shape instead of individual wiring, and the sensor and the like can be connected to the same bus-shaped signal line as described above. Since the monitoring device can be realized simply by connecting, wiring becomes easy. Furthermore, since there is no restriction on the wiring order and there is no need to distinguish between the controller, controller, sensor, etc., the wiring path can be freely selected, and the equipment can be added or expanded to connect to the shortest bus. You can do it easily because it is enough.

[Brief description of drawings]

1 to 5 show an embodiment of the present invention. FIG. 1 is a block diagram showing a circuit configuration, and FIGS. 2 to 5 are timings showing signal processing states in respective control methods. The charts, FIGS. 6 and 7 are block diagrams showing the configuration of a conventional monitoring device. 11,24,41 …… Operator, 12,13,27,35,36,42,43 …… Control signal line, 14,15,25,26,44,46 …… Controller, 16,17,30 , 31,46,
47 …… TV camera, 18,19,33,52,53 …… Image transmission line, 20…
… Image signal switch, 21, 32, 56 …… Monitor TV, 22, 34, 54…
… Sensors, 23 …… Sensor signal transmission lines, 48,49 …… Pan head, 5
5 (sensor) signal line.

Claims (1)

[Claims] 1. A plurality of television cameras, a controller for controlling a pan head on which the television cameras are mounted to change a shooting direction of the television cameras, and a camera control in a state in which an intruder is monitored and detected. While transmitting and receiving control data to and from the intrusion warning sensor that outputs a signal, the control data transmission is stopped when a mismatch between the control data transmitted and received by the camera control signal output from the intrusion warning sensor is detected. The operating device, the operating device, the control signal line in which the operating device, the controller and the intrusion warning sensor are wired and connected in a bus shape, and the control signal of the operating device is output to the controller when the sensor is not in the detection state While the image signal obtained by the television camera is sent to the monitor television, when the sensor is in the detection state, it is output from the sensor by stopping the transmission of the control data of the operating device. That in accordance with the camera control signal to forcibly select switches the image signal of the television camera which corresponds to the sensor, monitoring apparatus characterized by comprising a switch control means for sending to the TV monitor.