JP4065067B2 - Connection confirmation dummy camera and camera connection confirmation method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a connection confirmation dummy camera and a camera connection confirmation method constituting a CCTV monitoring system.
[0002]
[Prior art]
Conventionally, when a large-scale CCTV monitoring system is installed in a large building or the like, an installation method is generally adopted in accordance with the construction state of each building. For example, first, a line such as a coaxial cable is installed in parallel with the building construction, and after the building is completed, a camera is installed on the line, and the entire system is tested.
[0003]
The configuration of the CCTV apparatus ranges from a pair of simple monitoring camera systems that monitor one camera with a monitor to a large-scale system that switches and monitors 1000 or more cameras. Therefore, especially in a large-scale system of several tens or more, a coaxial cable is installed at the stage of construction, a camera is installed after the construction is completed, and there are many works for adjusting the system operation.
[0004]
FIG. 5 is a conceptual diagram of the CCTV installation mode, and conceptually shows the installation status of the camera coaxial cable in the building where the CCTV device is installed. In the conceptual diagram of the CCTV installation form of FIG. 5, an outline of the structure 1 in which the CCTV device is installed, an installation image of the camera coaxial cable 2 in which camera lines to be installed in the structure 1 are installed, and A state in which the center device 3 is connected to the camera coaxial cable 2 is shown.
[0005]
According to the above-described conventional CCTV installation mode, a line cable such as a camera coaxial cable 2 to which a maximum of 1000 or more cameras are attached may be laid. In such a case, the line cable is damaged due to construction, or it is difficult to perform an operation for assigning an ID number or the like for controlling or specifying a location to each camera from the center device after the building is completed. There are cases. This is because CCTV surveillance cameras need to be installed in a ceiling or building space so that they do not stand out from other objects.
[0006]
In construction where the camera is installed after the construction is completed, even if the camera is connected after the construction is completed, there are problems such as no image, position cannot be understood, performance is poor, camera ID cannot be understood, etc. It is easy to generate. As described above, the coaxial cable 2 connected to the center device 3 often does not know where it is arranged, and the coaxial cable 2 is cut during construction or is crushed by strong pressure. This is because it often happens that a cable with poor quality is installed. Detecting these occurrences is already too late and often spends a lot of money and time to improve the system.
[0007]
At the stage of construction, it can be connected to a matrix switch or the like that becomes the center device 3. However, since no camera is connected to the end of the line and there is no ID for specifying and switching the camera, the line cannot be confirmed, and of course, the system cannot be confirmed.
[0008]
After the building is completed, CCTV cameras of tens to more than 1000 will be installed and connected to the line. In such a state, it is difficult to specify which coaxial cable is the line to the center apparatus 3, and it is also difficult to confirm whether the ID specified for the camera is connected to a specific location and line. For this reason, CCTV installation work will be greatly delayed.
[0009]
[Problems to be solved by the invention]
However, in the above-described conventional technology, as described above, there is a case where the cable is not normal due to disconnection or pressure applied to the line installed early, during construction, the presence or absence of those defects is actually This is accompanied by a problem that confirmation cannot be obtained without connecting a camera.
[0010]
The present invention has been made in view of the above problems, and an object thereof is to provide a connection confirmation dummy camera and a camera connection confirmation method capable of confirming a line and installing an ID before installing a camera of a large-scale CCTV apparatus. And
[0011]
[Means for Solving the Problems]
In order to solve the above problems, a dummy camera for connection confirmation according to the present invention stores a cable connection connector for transmitting a video signal and receiving a data signal, a standard pattern oscillator for generating a test pattern, and an ID signal. An ID memory, a data separator that separates the video signal and the data signal, a signal separator that separates the separated data signal into an ID control signal that reads an ID signal from the ID memory, and the test pattern An amplifier for mixing the ID signal and adjusting the output of the mixed signal is provided, and the signal from the amplifier is output to a center device. With this configuration, the line function check can be facilitated.
[0012]
Further, in order to solve the above problems , the camera connection confirmation method according to the present invention performs transmission of a video signal and reception of a data signal, separates the video signal and the data signal, and converts the separated data signal into , Separating the ID signal from the ID memory into an ID control signal, reading the ID signal from the ID memory, generating a test pattern, mixing the test pattern and the ID signal, and adjusting the output of the mixed signal Then, it is output to the center device via a cable, and the cable is inspected based on the mixed signal . With this configuration, the line function check can be facilitated.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
The invention relating to the connection confirmation dummy camera according to claim 1 is a cable connection connector for transmitting a video signal and receiving a data signal, a standard pattern oscillator for generating a test pattern, an ID memory for storing an ID signal, A data separator for separating a video signal and a data signal; a signal separator for separating the separated data signal into an ID control signal for reading an ID signal from the ID memory; and the test pattern and the ID signal. And an amplifier that adjusts the output of the mixed signal and outputs the signal from the amplifier to the center device .
[0014]
With this configuration, the line function can be easily checked.
[0015]
In the second aspect of the present invention, in claim 1 connection check dummy camera according to a structure that can operate in the power supplied by the cable from the center apparatus. With this configuration, the configuration of the connection confirmation dummy camera is simplified, and the power supply for the camera can be confirmed.
[0016]
The invention according to claim 3 is configured to be operable with a power source such as a battery installed in the dummy camera for connection confirmation according to claim 1. With this configuration, it is possible to independently confirm the functions of the signal line and the power line.
[0017]
According to a fourth aspect of the present invention, in the connection confirmation dummy camera according to any one of the first to third aspects, the camera has a camera input connector for connecting a camera and outputs a video signal of the camera to the center device. to.
[0018]
According to a fifth aspect of the present invention, a camera connection detector that detects whether the camera is connected to the camera input connector according to the fourth aspect , and when the camera is connected, an output from the amplifier is output to the camera. And a switching device for switching to the output from .
[0019]
According to a sixth aspect of the present invention, the ID signal according to any one of the first to fifth aspects includes an ID number that identifies the camera .
[0020]
In the invention of claim 7, wherein, a structure having an ID display for displaying the I D signal according to any one of claims 1 to 6. With this configuration, the ID signal can be visually confirmed.
[0021]
The invention according to claim 8 is configured to include an ID confirmation button for displaying an ID signal on the ID display according to any one of claims 1 to 7 .
[0034]
Invention relates to a camera connection check method according to claim 9, wherein the stomach line to receive the delivery and data signals movies image signal, separates the video signal and the data signal, the separated data signals, ID from the ID memory The signal is separated into an ID control signal to be read, the ID signal is read from the ID memory, a test pattern is generated, the test pattern and the ID signal are mixed, and the output of the mixed signal is adjusted, via a cable The cable is output to the center apparatus, and the cable is inspected based on the mixed signal .
[0037]
In the invention of claim 10, wherein, the inspection of the cable of the camera connection check method according to claim 9 configured to perform a level measurement of Mi Kishingu signal.
[0038]
In the invention of claim 11, wherein the test pattern of the camera connection check method according to claim 9 or 10, a configuration Ru bar signal der for video test.
[0041]
Next, a connection confirmation dummy camera and a camera connection confirmation method according to an embodiment of the present invention will be described in detail with reference to the drawings. 1 to 4 are diagrams for explaining the configuration of a connection confirmation dummy camera and a camera connection confirmation method according to an embodiment of the present invention.
[0042]
In these drawings, FIG. 1 shows a dummy camera that can be attached to each end of a coaxial cable for a camera in a building where a CCTV device is installed as shown in FIG. It is an external appearance perspective view which shows the example of a structure. FIG. 2 shows an example of connection of the dummy camera with the coaxial cable, and FIG. 3 shows an example of connection of the actual camera to the dummy camera. FIG. 4 is a block diagram showing an example of the internal configuration of the dummy camera.
[0043]
In the example of the external configuration of the dummy camera in FIG. 1, the coaxial cable 2 is connected to the dummy camera 5 to the cable connection connector 20 for transmitting a signal to the center device 3. In addition, the present apparatus includes an ID display 36 for displaying the ID stored in the present apparatus. Further, the system has been systematized so as not to cause a construction error, and an ID confirmation button 50 is provided so that the ID number can be confirmed even when the coaxial cable 2 is not connected to the cable connector 20. . In addition, a camera input connector 40 for camera input is prepared in this apparatus so that an actual camera can be connected. In this embodiment, the camera can input from one input to a plurality of inputs, but FIG. 1 shows a configuration example of the camera input connector 40 having one input.
[0044]
The dummy camera 5 configured as described above is connected to the cable shown in FIG. 2 or FIG. 3, and the line function is checked. In general, first, in the connection form 2, the basic performance of the line is Ji E click, then detailed performance check topology of FIG. 3 are performed.
[0045]
FIG. 4 is a block diagram illustrating a configuration example of a dummy camera. In FIG. 4, the dummy camera 5 of this embodiment includes a power supply separation / control unit 22, a data separator 23, a MIX / SW 24, a signal separator 26, a power supply control unit 29, a camera connection detector 33, and a standard pattern oscillator 34. ID memory 35, ID display 36, amplifier 38, battery 39, and camera switch 48. Furthermore, it has camera input connectors 40, 42, 44, and 46 and a cable connection connector 20 as connectors for connecting the camera.
[0046]
The cable connector 20 prepared for the dummy camera 5 is an interface connector for sending an image to the center device 3 and receiving data. The cable connector 20 is connected to the power source separation / control unit 22 in which the battery 39 is secured, and it is determined whether or not the battery is operating.
[0047]
The signal that has passed through this block is separated into a video signal and data by the data separator 23. From the separated data, the camera control signal is further separated by the signal separator 26 for separating the ID signal / camera control signal.
[0048]
One of the separated signals is input to the MIX / SW 24, and various functions are controlled by switching various functions. The other separated signal is input to the ID memory 35, and the ID signal is read from the ID memory 35.
[0049]
The read ID signal is mixed with the camera test pattern generated by the standard pattern oscillator 34 and the amplifier 38. The mixing signal is provided with an adjustment function for providing a specified output so that the level of the line constituted by the coaxial cable 2 can be measured. Further, the signal of the ID memory 35 is displayed on the ID display 36, which is useful for improving workability in construction.
[0050]
The camera input connectors 40, 42, 44 and 46 are prepared as connectors for camera connection. The four-channel input signals are switched to one of the cameras by the camera switch 48 and selected. From the input signal selected here, the camera connection detector 33 automatically detects which channel's camera is connected. The input signal is input to the MIX / SW 24, selected, and sent to the center device 3.
[0051]
The large-scale CCTV system is installed in the construction process of the building 1 in which the CCTV apparatus is installed, as conceptually shown in FIG. 5 in which the coaxial cable for the camera is installed in the building in which the conventional CCTV apparatus is installed. By installing cables such as coaxial cables at the location where CCTV cameras are to be installed.
[0052]
If the construction progresses and the cable is laid, it can be connected to a matrix switch or the like serving as the center device 3. However, since the camera is not connected to the end of the line and there is no ID for specifying and switching the camera, the line cannot be confirmed, and of course, the system cannot be confirmed. In such a situation, the connection confirmation dummy camera and the camera connection confirmation method of the present embodiment are utilized.
[0053]
In the construction where the camera is installed after the construction is completed, as described above, even if the camera is connected after the construction is completed, the image is not output, the position is not understood, the performance is poor, and the camera ID is obtained. Troubles such as no are likely to occur. However, if the connection confirmation dummy camera and the camera connection confirmation method of this embodiment are used, the line corresponding to the actual camera is confirmed from the line confirmation and the cable position when the line such as the coaxial cable of the large-scale system is established. A number or ID code is assigned to the dummy camera, and the actual camera is installed after the system confirmation is completed using the dummy camera. By completing the system based on this procedure, the quality and performance of the system can be completed at the highest level.
[0054]
The dummy camera 5 allows the CCTV camera to be operated by a power source supplied by a coaxial cable from the center apparatus, and has various functions therein.
[0055]
The dummy camera 5 is designed to be small and light so that the coaxial cable 2 can be installed at the same time when it is installed in a building, and can be connected by the same cable connection connector 20 as the camera connection connector provided in the coaxial cable. A signal can be sent from a test signal generating device such as a bar signal for receiving the signal at the center device, and the coaxial cable can be confirmed. Alternatively, the ID number installed in the dummy camera 5 in advance can be transmitted simultaneously with the test signal, the system can be simulated based on the ID in the center device, and the system can be installed in advance.
[0056]
Further, the dummy camera 5 is provided with a camera input connector 40 so that the dummy camera 5 can be operated even if the camera is connected to the dummy.
[0057]
As shown in the connection example of the dummy camera shown in FIG. 2, the dummy camera 5 is connected to the coaxial cable that is installed at the time of construction work, so that the line can be connected to the center device whenever the line is installed. When installing the camera, remove it. The dummy camera can be used for the next construction.
[0058]
As shown in the dummy camera connection example, the dummy camera 5 is connected when the coaxial cable is installed, and is used as in the above example. Furthermore, when the camera is installed, it can be used by connecting to a camera input connector provided on the dummy camera 5, and when the camera is connected, the dummy camera function is automatically switched to the camera signal. However, when the TV standard signal of the dummy camera 5 is necessary, it is switched from the center device, and the line confirmation, that is, the line quality and loss can be measured even in this switched state.
[0059]
According to the above embodiment, when installing a large CCTV system in a new building, it is possible to confirm the line and set the operation mode of the system based on ID even when only the line is installed. It is a big effect. Moreover, the dummy camera of this embodiment can be used for the next construction after it is disposable or removed. Or, considering future maintenance, it has many functions such as being able to connect a camera to a dummy camera.
[0060]
In an actual system, the camera input connectors 40, 42, 44, and 46 of a plurality of channels are used as necessary, and the switching is controlled in the center device 3 serving as central control. By making it possible to selectively connect by switching a plurality of cameras, it is particularly used for identifying a cause of a subtle failure such as interference between a line and a camera. It can also serve as an adjustment for the addition of a switching device. The addition of a plurality of channels can be selectively used in addition to the addition of a switching camera, for example, for a distributed arrangement on an adjacent location or the same floor, or for a camera with different characteristics.
[0061]
The above embodiment is a preferred example of the present invention. However, the present invention is not limited to this, and various modifications can be made without departing from the scope of the present invention.
[0062]
【The invention's effect】
As is clear from the above description, according to the connection confirmation dummy camera of the first aspect of the present invention, the line confirmation and the camera ID determination are performed using the substitute dummy camera without connecting the camera. With this configuration, the line function check and ID setting can be facilitated.
[Brief description of the drawings]
FIG. 1 is an external perspective view showing a configuration example of a connection confirmation dummy camera according to an embodiment of the present invention. FIG. 2 is a diagram showing an example of connection of a dummy camera to a coaxial cable. FIG. 4 is a circuit configuration block diagram showing an example of the configuration of a dummy camera. FIG. 5 is a conceptual diagram showing the laying state of a coaxial cable for a camera in a building where a conventional CCTV device is installed. Figure shown in [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Structure 2 Coaxial cable for cameras 3 Center apparatus 5 Dummy camera 20 Cable connector 22 Power supply separation / control part 23 Data separator 24 MIX / SW
26 Signal separator 29 Power supply control unit 33 Camera connection detector 34 Standard pattern oscillator 35 ID memory 36 ID display 38 Amplifier 39 Battery 40, 42, 44, 46 Camera input connector 48 Camera switch 50 ID confirmation button

Claims (11)

A cable connector for receiving the movies image signal transmitted and the data signal, and the standard pattern generator for generating a test pattern, an ID memory for storing an ID signal, data separator for separating the video signal and the data signal When the said separating data signals, and a signal separator for separating the ID control signal for reading out the ID signal from said ID memory, mixes the said ID signal and said test pattern to adjust the output of the mixed signals A dummy camera for confirming connection , comprising an amplifier, and outputting a signal from the amplifier to a center device . 2. The dummy camera for connection confirmation according to claim 1, wherein the dummy camera is operated by a power source supplied by a cable from the center device . Claim 1 connection check dummy camera, wherein the operating in the installed power therein. The dummy camera for connection confirmation according to any one of claims 1 to 3 , further comprising a camera input connector for connecting a camera and outputting a video signal of the camera to the center device . A camera connection detector that detects whether the camera is connected to the camera input connector; and a switch that switches an output from the amplifier to an output from the camera when the camera is connected. The dummy camera for connection confirmation according to claim 4 , characterized in that: The ID signal according to claim 1 to 5 connection check dummy camera according to any one of comprising the ID number identifying the camera. It claims 1 to connection check dummy camera according to any one of 6 to comprising the ID display for displaying the ID signal. It claims 1 to 7 connection check dummy camera according to any one of comprising the ID confirmation button for displaying the ID signal to the ID indicator. There line to receive the delivery and data signals movies image signal, the separated video signal and the data signal, the separated data signal, separates the ID control signal for reading out the ID signal from the ID memory, wherein the ID memory The ID signal is read out, a test pattern is generated, the test pattern and the ID signal are mixed, the output of the mixed signal is adjusted, and the mixed signal is output to the center device, based on the mixed signal A method for confirming camera connection, wherein the cable is inspected . The inspection of the cable, the camera connection check method according to claim 9, characterized in that the level measurement of Mi Kishingu signal. The camera connection confirmation method according to claim 9 or 10, wherein the test pattern is a bar signal for video test .

Images