JPS6154782A - Mobile video transmission device - Google Patents

Abstract

PURPOSE:To install a transmission line of an electric power, a control signal and a video signal in a refreshing manner by installing plural conductors where a pantograph installed to a self-advancing trolley slides in a trolley duct guiding a self-advancing trolley. CONSTITUTION:A trolley duct B is composed of the first trolley duct to hang down a self-advancing trolley A and the second duct B2 installed in parallel to the side. The first trolley duct B1 installs a pair of the conductor D1 for an electric power inside. At the second trolley duct B2, a trolley 10 for multi transmission is hung down and plural conductors D... are installed. D2 is a common conductor used for a conductor for controlling a television camera 1 and a conductor for controlling a motor relay box 6 and D3 is a conductor for transmitting a video signal. The conductor D2 for controlling the television camera 1 and the motor relay box 6 is connected through a harness cable d7 to a terminal side multi transmission device X.

Description

[Detailed description of the invention] 〔Technical field〕 This invention can be used in nuclear power plants, other factories, and banks.

The present invention relates to a mobile video transmission device used to widely and remotely monitor necessary locations such as supermarkets, amusement parks, swimming pools, and Joe rooms.

[Background technology]

Conventional television camera monitoring equipment only fixes the television camera in position, and uses actual wiring to control the television camera's rotation stand and focus.

It was common practice to control the aperture from a main controller and monitor it using a monitor television receiver.

In this case, since the television camera is in a fixed position, there is a problem in that it is not possible to sufficiently monitor a wide area.

Traditionally, there are also mobile television cameras that require electric cables and control signal cables.

An IC signal cable was installed, and the cable group was configured to expand and contract as the television camera moved.

In this case, since the cable moves around, it is not only difficult to handle, but also there is a risk that the cable may be cut due to the tension. Another problem is that it is not possible to adopt an endless travel route method.

In particular, because of the large number of cables, mobile television cameras are prone to wobbling, resulting in poor video stability. There was a problem in that the trolley duct for guiding became large and heavy.

[Purpose of the invention]

The purpose of this invention is to install Ar+Im transmission lines for electric power, control signals, and video signals, and to enable the adoption of an endless running route system.In addition, the video stability is good, and equipment costs are comparatively low. It is an object of the present invention to provide a mobile video transmission device that is inexpensive and allows a compact trolley duct.

[Disclosure of the invention]

The mobile video transmission device of the present invention includes a television camera, a traveling device, and a control device incorporating a terminal-side multiplex transmission device that multiplexes and inputs and outputs control signals transmitted to the television camera and traveling device. A self-propelled trolley having a self-propelled trolley, a trolley duct that guides the self-propelled trolley, and a common conductor disposed within the trolley duct that transmits control signals for the traveling device and control signals for the television camera, the same <+'+ij Toshi 1: A conductor disposed in the reduct for transmitting the video signal from the television camera, and a conductor disposed on the self-propelled trolley that slides on each of the conductors to transmit and receive the control signal and the video signal. A current collector, a main controller connected to each of the conductors, an operating side multiplex transmission device provided in the main controller corresponding to the terminal side multiplex transmission device, and a monitor television receiver connected to each of the conductors. It is prepared.

According to the configuration of this invention, the following effects are achieved. That is,
In the trolley duct that guides the self-propelled trolley, a plurality of conductors on which the current collector installed on the self-propelled trolley slides are laid, making it possible to transmit electric power and Can install transmission lines for control signals and video signals.

In addition, the power is always stable, without the risk of cable breakage or video disturbances caused by shaking of the television camera caused by cable sway.

It is possible to ensure the stability of signal supply and video quality.

Furthermore, it is possible to install not only straight, meandering, and curved lines, but also endless lines of trolley ducts. This is because the conductor in the trolley duct and the current collector of the self-propelled trolley are made slidable relative to each other.

This makes it possible to freely select the form of the travel route.

In addition, the control device has a built-in terminal-side multiplex transmission device that multiplexes and inputs and outputs control signals transmitted to the television camera and traveling equipment. Since the side multiplex transmission equipment is installed, the conductor laid in the trolley duct is a common conductor that is used for both television cameras and traveling equipment, so the number of conductors can be reduced and the number of parts related to the conductor can be reduced. It is possible to reduce the amount of space required for installing the conductor, and it is also possible to make the trolley duct itself more compact.

Embodiment An embodiment of the present invention will be described with reference to FIGS. 1 to 3. 1A and 1B are overall schematic block diagrams, FIG. 2 is an overall perspective view, and FIG. 3 is an enlarged perspective view of the self-propelled trolley.

In the figure, A is a self-propelled trolley, B is a trolley duct, and C is a center control panel.

The self-propelled trolley A has a television camera 1. Camera rotating stand 2. The main elements are a traveling device 3 and a control device 4 for these devices.

:1111 (The AN device 4 includes a camera power supply 5, a motor relay hook 6, a camera relay box 7, an impedance matcher 8, and a terminal side multiplex transmission device
etc. are built-in.

Camera power source 5, motor 9 for camera rotating stand 2, television camera 1. Camera relay box 7° supplies power to motor relay box 6, matching device 8, and terminal side multiplex transmission device X. Motor relay box 6 supplies power to motor 9. The camera relay box 7 supplies power to motors for focus, aperture, zoom, and lens switching of the television camera 1.

The terminal-side multiplexing transmission device It is something.

The trolley duct B consists of a first trolley duct B1 for suspending the self-propelled trolley A and a second trolley duct B2 installed in parallel beside the first trolley duct B1.

The first trolley duct B has a pair of power conductors D1 laid therein.

A multiplex transmission trolley IO is suspended from the second trolley duct B2, and a plurality of conductors D... are laid. D2 is a common conductor that serves as a conductor for controlling the television camera l and a conductor for controlling the motor relay hook 6, and D3 is a conductor for transmitting video signals. Tele
The control conductor D2 of the business camera 1 and the motor relay box 6 is connected to the θ1:1 through the harness cable d7.
It is connected to multi-city transmission equipment X on the US side.

For each conductor DI, D3, a current collector (trolley shoe) El provided on the self-propelled trolley A, the multiplex transmission trolley 10
, B3 are configured to slide. This results in
Electric power and control signals are transmitted to and received from the self-propelled motor 9 to the self-propelled trolley, the control device 4, and the television camera l, and video signals are transmitted and received from the television camera l.

Center control panel C is main controller 1
1 and a monitor television reception tal 12.

The main controller 11 performs main operation s13. Camera/motor operation unit 14. Operating side multiplex transmission device Y.

Impedance matching device 15 and power supply box 1
Consists of 6.

The power supply box 16 is connected to an AC 100 (V) power supply 17 and is also connected to the conductor D1. The camera/motor operation section 14 is connected to the operating side multiplex transmission device Y, and the operating side multiplexing transmission device Y is connected to the conductor D2. Matching 'C115 is connected to the conductor D3 and also to the monitor television receiver 12. d1 to d3 are coaxial cables for the connection.

The first trolley duct B and the second trolley duct B2 constitute endless travel paths that are parallel to each other within the same plane.

The matching device 8 and the matching device 15 are connected to a conductor D3 and a coaxial cable d4.in order to improve the image quality. d3
It is inserted at the connection point with.

In FIG. 5, reference numeral 18 denotes a traveling wheel body of the traveling device 3, and 19 denotes a conduit connecting the traveling device 3 of the self-propelled trolley A and the control device 4.

moving the self-propelled trolley A to an arbitrary position in the first trolley duct B1 and stopping it by remote control;
By rotating the rotary table 2 of the television camera 1 and adjusting the focus, aperture, etc., it is extremely easy to monitor a wide area while the camera is moving or stopped.

In addition, a conductor D1 on which the current collector E1 provided on the self-propelled trolley A slides is laid in the first trolley duct Bl of the self-propelled trolley A, and a conductor D1 on which the current collector E1 provided on the self-propelled trolley A slides is installed, and a multiplex transmission trolley 10 is installed in the second trolley duct B2. Provided current collector E2. Conductor D2. on which E3 slides. Since D. is completely eliminated, transmission lines for power, control signals, and video signals can be laid in a much simpler manner than in the conventional example.

Furthermore, since the impedance matchers 8 and 15 are provided, the video image quality is excellent. That is, as shown in FIG. 6, the coaxial cables d3°d, ■ and the conductors D3.
This is because impedance matching g=s, ts is inserted between D3 and reflection of the video signal can be effectively prevented.

Note that a vehicle trolley duct may be constructed as the trolley duct B, and conductors D1 to D3 for transmitting and receiving electric power, control signals, and video signals may be installed therein.

However, from the point of view of image quality and system reliability, separate trolley ducts B, B, and
It is desirable to set it to 2.

The following are important elements in video transmission.

■ As shown in FIG. 7, conductor D3. connected to coaxial cable d3. In D3, instead of connecting each end endlessly, a resistor R is connected between the ends of both conductors D3゜D3.
Insert. This resistance R is approximately 150 (Ω).

(2) In order to suppress electromagnetic waves emitted from the conductor D3 of the trolley duct B2, it is desirable that the housing of the trolley duct B2 be made of metal.

〔Effect of the invention〕

According to this invention, there are the following effects.

In other words, in the trolley duct that guides the self-propelled trolley, multiple conductors on which the current collector installed on the self-propelled trolley slides are laid, so it has a much cleaner appearance compared to the conventional cables that move around. , it is possible to install transmission lines for power, control signals, and video signals.

In addition, there is no fear of cable breakage as in conventional systems, and a stable supply of power and signals is possible at all times.In addition, the conductor in the trolley duct and the current collector of the self-propelled trolley are able to slide freely relative to each other. As a trolley duct, it is possible to lay not only a straight, meandering, and curved line, but also an endless line of trolley ducts, and this has the effect that the shape of the travel route can be freely selected.

In particular, the control device has a built-in terminal-side multiplex transmission device that multiplexes and inputs and outputs control signals transmitted to the television camera and traveling equipment. Since multiple transmission equipment is provided, the conductor laid in the trolley duct is a common conductor used for both television cameras and traveling equipment.

Therefore, the number of conductors and related parts of the conductors can be reduced, and the space for installing the conductors can be reduced, and the trolley duct itself can be made more compact, which is a remarkable effect.

[Brief explanation of drawings]

1A and 1B are schematic block diagrams of an embodiment of the present invention, FIG. 2 is a schematic perspective view of the entire mobile video transmission device, and FIG. 3 is an enlarged perspective view of a portion. FIG. 4 is a sectional view thereof, FIG. 5 is a front view thereof, FIG. 6 is an explanatory diagram of a matching device, and FIG. 7 is an explanatory diagram of a trolley duct terminating resistor. A... Self-propelled trolley, B... Trolley duct, Di, D
3...Conductor, D2...Common conductor, E1-E4...
Current collector, X...terminal side multiplex transmission device, Y...operation side multiplex transmission device, l...television camera, 3...
Traveling device, 4...JlIIJ control device, 11... Main controller, 12... Monitor television receiver Fig. 2 Fig. 3 Fig. 4 Fig. 6 Fig. 5 Fig. 3A Fig. 7

Claims (1)

[Claims] A self-propelled trolley having a control device incorporating a television camera, a traveling device, and a terminal-side multiplex transmission device that multiplexes and inputs and outputs control signals transmitted to the television camera and traveling device, and this self-propelled trolley. a common conductor disposed within the trolley duct for transmitting control signals to the traveling device and to the television camera; and a common conductor disposed within the trolley duct for transmitting control signals from the television camera to the television camera. a conductor for transmitting a video signal; a current collector provided on the self-propelled trolley and sliding on each conductor to send and receive the control signal and the video signal; a main controller connected to each conductor; A mobile video transmission device comprising: an operating side multiplex transmission device provided in a controller corresponding to the terminal side multiplex transmission device; and a monitor television receiver connected to each of the conductors.