JPH0668365A - Monitor device - Google Patents

Abstract

PURPOSE:To provide an inexpensive monitor device by unnecessitating transmission lines, for every sensor. CONSTITUTION:The monitor device consists of a terminal part 1 equipped with a monitor camera 3 and a sensor 4 and a device main part 2 equipped with a monitor TV 5; and the terminal part 1 is equipped with a composite signal output part which composes a signal of the video signal from the monitor camera 3 and the sensor signal from the sensor 4 and outputs the composite signal and the device main part 2 is equipped with the monitor TV and a warning circuit 7 which generate a warning corresponding to the sensor signal included in the composite signal.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surveillance device using a surveillance camera, and more particularly to the use of a sensor for detecting an illegal intruder together with the addition of a sensor signal from this sensor to a video signal for transmission. The present invention relates to a monitoring device that reduces wiring costs.

[0002]

[Prior Art] Illegal intruders into banks and department stores,
Conventionally, the following types of monitoring devices exist for detecting unauthorized users of devices such as cash dispensers. For example, there is a device in which an image of a main portion is constantly taken by a surveillance camera and a surveillance staff member constantly monitors the image. In addition, the video signal from the surveillance camera is appropriately image-processed to detect an intruder, or another dedicated sensor is used to detect an intruder and the alarm signal alerts the observer. The device exists.

Among the conventional monitoring devices as described above, in the device in which the monitor constantly monitors the output of the surveillance camera, the monitor may overlook the abnormality, and the image processing automatically detects the intruder. There is a risk of misinformation in the method. Therefore, it is considered most desirable to use various dedicated sensors together in order to reduce the burden on the surveillance staff and prevent false alarms in image processing.

[0004]

However, when a surveillance camera is constructed by using a surveillance camera and various dedicated sensors in combination, a signal line and a power supply line are respectively wired between each sensor and the apparatus body. There is a problem that the cost for system construction rises because of the necessity. The present invention has been made in view of this problem, and an object of the present invention is to provide a monitoring device that realizes cost reduction by eliminating a signal transmission line for each sensor.

[0005]

In order to achieve the above-mentioned object, a monitoring device according to a first aspect of the present invention comprises: (a) a terminal unit including a monitoring camera and various sensors; and (b) an image taken by the monitoring camera. (A) A composite signal for combining and outputting a video signal from the surveillance camera and a sensor signal from the various sensors to the terminal unit. Equipped with an output section,
(B) The device body is characteristically provided with a warning unit that receives a combined signal from the combined signal output unit and issues a warning according to a sensor signal included in the combined signal.

According to a second aspect of the present invention, "the composite signal output section superimposes the sensor signal within a vertical blanking interval of an output signal from the monitor camera, and" the warning means outputs the composite signal. It is characterized in that the sensor signal is separated from the combined signal from the output unit, and a warning unit such as a lamp or a buzzer is operated according to the level of the sensor signal.

According to a second aspect of the present invention, "the composite signal output section superimposes the sensor signal on a section other than the blanking section of the output signal from the surveillance camera," the warning means The composite signal output from the composite signal output unit is supplied to the display unit, and the sensor signal levels of the various sensors are displayed according to the display content.

[0008]

[Action]

[Monitoring device according to claim 1] The monitoring camera outputs a video signal of a specific monitoring point, and the various sensors output a sensor signal at an installation point. The composite signal output unit of each terminal unit combines the video signal from the surveillance camera and the sensor signals from various sensors and outputs a composite signal to the apparatus main body unit. Therefore, it suffices to provide a transmission line for transmitting the combined signal between the terminal section and the apparatus main body section, and the signal transmission line for each sensor is not necessary.

The warning means of the apparatus main body receives the combined signal from the combined signal output section and issues a warning according to the sensor signal included in the combined signal. Specifically, a buzzer, a lamp, or the like is operated to notify an observer of the occurrence of the abnormal situation, and / or a display corresponding to the type of the abnormal situation is displayed on the display unit of the apparatus main body. In this way, since the warning is issued based on the signal from the dedicated sensor, there is no false alarm such as in the case of analyzing the image of the video signal, and there is no fear that the monitoring person overlooks the abnormality.

[Monitoring device according to claim 2] 'The combined signal output unit of each terminal unit superimposes sensor signals from various sensors in a vertical blanking interval of the output signal from the monitoring camera. Therefore, even if this combined signal is directly supplied to the display unit of the apparatus main body, the display screen is not disturbed. The warning means of the apparatus main body section separates the sensor signal from the combined signal of the combined signal output section, and operates a warning circuit such as a buzzer or a lamp according to the level of the sensor signal. That is, even if an observer overlooks an abnormal situation, it is possible to reliably know the occurrence of the abnormal situation by the warning from the warning circuit.

[Monitoring Device of Claim 3] ″ The composite signal output unit of each terminal unit superimposes the sensor signal on a section other than the blanking section of the output signal from the monitoring camera. '' The warning means of the device body supplies the composite signal of the composite signal output part to the display part of the device body, and displays the sensor signal level of the various sensors according to the display content. Therefore, even if an abnormal situation that is difficult to understand from the image from the surveillance camera occurs, the image according to the abnormal situation is displayed on the display unit of the main body, so that the occurrence of the abnormal situation can be ensured. Can understand.

Note that the sensor signal is separated from the composite signal,
It is also possible to operate the warning circuit according to the level of the sensor signal, and in that case, the occurrence of the abnormal situation can be notified more reliably.

[0013]

The present invention will be described in more detail based on the following examples. FIG. 1 is a block diagram showing a monitoring device according to an embodiment of the present invention. This device is composed of a plurality of terminal units 1 _-1 , 1 _-2, ... composed of a surveillance camera and a sensor group, and a device body unit 2 for monitoring whether or not an abnormal situation has occurred in each terminal unit 1. It consists of The apparatus main body 2 is connected to each terminal 1 by a transmission line, and each transmission line also supplies power to the surveillance camera 3 and the sensor 4.

Each terminal unit 1 is composed of a surveillance camera 3 and a plurality of sensors 4 _-1 ... 4- _n, and a video signal from the surveillance camera 3 and a sensor signal from the sensor 4 are combined. A composite signal is output. Device body 2
Is a monitor TV 5 that receives a combined signal from each terminal unit 1 and displays it as an image, a sensor signal separation circuit 6 that separates the sensor signal from the combined signal, and operates a lamp or a buzzer based on the separated sensor signal. It is composed of a warning circuit 7 for enabling. The monitor TV 5, the sensor signal separation circuit 6, and the warning circuit 7 are provided for each terminal unit 1 _-1 , 1 _-2 ...

FIG. 2 is a detailed view of a part of FIG. 1, in which a monitoring camera section 3 for generating a composite signal of a video signal and a sensor signal and an apparatus main body section corresponding to the monitoring camera section 3 are shown. 2 shows the sensor signal separation circuit 6 in FIG.
The monitoring camera unit 3 superimposes the sensor signal on the video signal by superimposing the sensor signal on the video signal, the video signal generation unit 8 that captures the monitoring location and generates the video signal, the sensor information holding unit 9 that holds the sensor signal from each sensor 4. Composite signal output unit 10 for outputting a composite signal
It consists of and.

The sensor signal separation circuit 6 corresponding to the surveillance camera section 3 includes a sync separation section 11 for separating a horizontal sync signal,
The scanning line counter 12 that counts the number of scanning lines from the upper left of the display screen by the horizontal synchronization signal, the sensor signal position setting unit 13 that stores in advance the position where the sensor signal is superimposed, and the counting by the scanning line counter 12. When the result has a predetermined value, the sensor signal is extracted from the combined signal at that time. And
The output of the extraction unit 14 is supplied to a warning circuit 7 that operates a lamp, a buzzer, etc. according to the output value.

FIG. 3A shows a composite signal output from the composite signal output section 10 of each terminal 1.
An example in which the sensor signal is superimposed in the vertical blanking interval after the vertical synchronization signal is shown. That is, in the case of this combined signal, the video signal from the surveillance camera 3 is not affected at all, and the monitor location is displayed on the monitor TV 5 in the same state as in the conventional device. In this figure, the three sensor signals S ₁ , S ₂ , and S ₃ are sequentially superimposed at each horizontal synchronization, but a plurality of sensor signals may be superimposed.

The operation of the monitoring apparatus shown in FIG. 1 having the above structure will be described below. Each surveillance camera 3 always shoots a surveillance location and generates a video signal. Further, each sensor 4 outputs a sensor signal of a level according to whether or not an abnormality has occurred. The video signal from the surveillance camera 3 and the sensor signal from each sensor 4 are
The signals are combined by the combined signal output unit 10 and constantly transmitted to the apparatus main body unit 2 (see FIG. 2). If no abnormal situation occurs, the level of the sensor signal is 0 V,
At that time, only the video signal of the monitoring location is transmitted to the apparatus main body 2.

The device body 2 receives the combined signal from the combined signal output unit 10 and supplies it to the monitor TV 5 for display. In addition, the synchronization separation unit 11 in the device main body 2
The horizontal synchronizing signal is sequentially separated from the combined signal from the combining unit 10 and supplied to the scanning line counter 12. Then, the scanning line counter 12 counts the horizontal synchronization signal after vertical synchronization.

By the way, the sensor signal position setting unit 13 is preset with position information indicating the number of horizontal synchronization signals after which the sensor signal is superimposed. Therefore, the scanning line counter 12 compares the position information set in the sensor signal position setting unit 13 while counting the horizontal synchronization signal after vertical synchronization, and if they match, a signal to that effect is sent to the extraction unit 14. Output.

The extraction unit 14 operates each time it receives an output from the scanning line counter 12, and extracts the sensor signal S from the composite signal.
₁ , S ₂ , S ₃ are extracted and output to the warning circuit 7. Then, the warning circuit 7 activates a lamp, a buzzer, a switch, or the like in accordance with the level of the received sensor signal to notify an observer of the occurrence of the abnormal situation and its type. FIG. 3B
4 illustrates another example of the composite signal output from the composite signal output unit 10 of each terminal 1, in which the sensor signals S ₁ , S ₂ , and S ₃ are superimposed on a section other than the blanking section. Shows. That is, in the case of the combined signal shown in FIG. 3B, a part of the video signal is changed to the sensor signal.

Since the composite signal is supplied from the composite signal output unit 10 to the monitor TV 5, the output of the sensor is displayed on a part of the monitor TV screen, for example, as a band indicating an abnormal situation. Note that, in FIG. 3B, one sensor signal is superimposed on one horizontal line for convenience of drawing, but in reality, one sensor signal is superimposed on a plurality of horizontal lines. By doing so, a band is formed on the monitor TV screen, and different types of sensor signals are displayed at different positions. In this case, different color bands may be displayed at different positions corresponding to the respective sensors, and this warning band may be blinked so as to be displayed every few seconds (for example, every one second). Good.

When the composite signal is formed as shown in FIG. 3 (b), the occurrence of an abnormal situation can be grasped only on the monitor TV screen, but in order to increase the certainty of the abnormality notification, the separation circuit 6 and the warning are issued. The circuit 7 may be operated. The operation in this case is the same as that described above, and the sensor signal position setting unit 1
Only the set position information in 3 is different.

[0024]

As described above, in the surveillance device according to the present invention, the composite signal output section of each terminal unit synthesizes the video signal from the surveillance camera and the sensor signal from various sensors to generate a composite signal. It is output to the device body. Therefore, a transmission line for each sensor is not required between the terminal unit and the apparatus main body unit, and it is possible to reduce the construction cost due to wire saving. In addition, it can support multiple sensors,
It is easy to add a sensor later.

When the display unit of the apparatus main body is operated based on the combined signal as in claim 3, the image when the sensor reacts can be made different from the normal image, and an abnormal situation occurs. It is possible to visually notify the occurrence of. If the surveillance camera has an electronic shutter function, the shutter operation can be performed in synchronization with the timing of the sensor signal.

[Brief description of drawings]

FIG. 1 is a block diagram of a monitoring device according to an embodiment of the present invention.

2 is a block diagram showing in detail a part of the apparatus of FIG. 1;

FIG. 3 illustrates a waveform of a composite signal output from the surveillance camera side.

[Explanation of symbols]

 1 Terminal 2 Device Main Unit 3 Surveillance Camera 4 Sensor 5 Monitor TV (Warning Means) 6 Sensor Signal Separation Circuit 7 Warning Circuit (Warning Means) 10 Combined Signal Output Unit

Claims (3)

[Claims] 1. A monitoring device comprising: a terminal unit including a monitoring camera and various sensors; and a device main body unit including a display unit for displaying an image captured by the monitoring camera, wherein the terminal unit is connected to the monitoring camera. Of the image signal and the sensor signals from the various sensors are combined and output, and the apparatus main body section receives the combined signal from the combined signal output section and is included in the combined signal. A monitoring device comprising a warning means for issuing a warning according to a sensor signal. 2. The composite signal output unit superimposes the sensor signal within a vertical blanking interval of an output signal from the surveillance camera, and the warning unit outputs the sensor from the composite signal from the composite signal output unit. The monitoring device according to claim 1, wherein the signal is separated, and a warning unit such as a lamp and a buzzer is operated according to the level of the sensor signal. 3. The composite signal output section superimposes the sensor signal on a section other than the blanking section of the output signal from the surveillance camera, and the warning means displays the composite signal of the composite signal output section on the display. The monitoring device according to claim 1, wherein the monitoring signal is supplied to a unit and the sensor signal level of each of the various sensors is displayed according to the display content.