KR101520596B1 - Closed circuit television - Google Patents

Abstract

The present invention relates to a closed circuit television. Particularly, the closed circuit television comprises: a camera unit for photographing a monitored region; a sensor unit for monitoring a sensing value; a state change reason determination unit for receiving a signal from the sensor unit to determine a reason of changing with respect to a state of the camera unit; a correction possibility determination unit for receiving data for a reason for change from the state change reason determination unit to determine whether a correction is possible; and an alarm signal transmission unit for transmitting an alarm signal to a control server. An objective of the present invention is to provide the closed circuit television which performs a correction by applying a correction method matching a situation and transmits a signal requiring for a manual correction to a control center in a case that an automatic correction is impossible.

Description

Closed circuit television < RTI ID = 0.0 >

The present invention relates to a closed circuit television, and more particularly, to a closed circuit television, which includes a camera unit for photographing a surveillance region, a sensor unit for monitoring a sensing value, A correctable judgment unit for receiving data on the cause of the change from the state change cause judgment unit and judging whether or not the data can be corrected and an alarm signal transmission unit for sending an alarm signal to the control server, It is about television.

The conventional camera has a problem that it is difficult to take a separate action when it is impossible to correct by itself if a problem arises in the structure for photographing the surveillance area and the disturbance is imposed on the photographing.

On the other hand, Korean Patent Laid-Open Publication No. 10-2005-0037882 is exemplified as a prior art related to the present invention.

In the patent document, "the position and attitude correction information of the camera is analyzed by analyzing the image input through the three-line scanner provided in the camera, and the position and attitude of the camera Quot; information correction apparatus "

Conventional cameras, such as the patent documents, however, have not introduced a correction method considering the cause of various state changes in connection with a sensing unit that senses various state changes by introducing a facility management concept. In addition, There is a problem in that it does not have a method of coping with.

Korean Patent Laid-Open Publication No. 10-2005-0037882, a method and apparatus for correcting position and attitude information of a camera

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a closed circuit television in which a correction method is applied according to a situation. It is another object of the present invention to provide a closed circuit television which transmits a signal requesting manual correction to a control server when automatic correction is impossible.

According to another aspect of the present invention, there is provided a closed circuit television comprising a camera unit for capturing an image of a surveillance zone, a sensor unit for monitoring a sensing value, and a controller for receiving a signal from the sensor unit, And an alarm signal transmission unit for transmitting an alarm signal to the control server. The control unit includes: a status change cause determination unit for determining whether the status change is caused by the status change cause determination unit;

The sensor unit includes an inertial sensor on at least one of the housing and the camera unit, and monitors at least one of a sensing value and an image data value, and provides data to the state change cause determination unit.

Wherein the state change cause determination unit receives at least one of a first state change that causes a change in the post and a housing and a second state change that causes a change in the arm and the camera by receiving a signal of the state change from the sensor unit And provides the data to the correctable judgment unit.

Wherein the correctable determination unit receives data from the state change cause determination unit and determines based on the correctable determination table whether a state change and a correction method according to the degree of change and a correction method are determined, At least one of data constructed based on an initial setting using at least one of software and hardware, and at least one of inclination, obstacle, and vibration of the camera unit due to a state change, And how to calibrate it.

The construction of the data using the software records at least one or more of the basic image of upper and lower and left and right and the object near the center in the background in the correctable judgment table.

When the correction by the software is possible, zero point adjustment is performed based on at least one of at least one of the up, down, left, and right base images and objects near the center in the background.

In the construction of data using the hardware, a correction method according to at least one of the shaking of the ground and the pile, the inclination due to shaking, and the degree of the state change is recorded in the correctable judgment table through the sensor.

If it is possible to perform the correction by the hardware, the tilt correction using the three-axis rotator can be performed according to the degree of the change.

The camera unit switches the direction when a state change occurs, captures the downward direction, or photographs the downward direction at all times and separately stores the image for the downward direction.

The alarm signal transmission unit transmits a state change time and an alarm signal to the control server when it is determined that the correction can be performed by the correctable determination unit, and when it is determined that the correction can not be performed by the correctable determination unit The emergency alarm signal requesting the status change time and the priority correction is transmitted to the control server and a lock setting is made to prevent the loss of data and the deletion of data in the front and rear monitoring images and the forward direction images Carry out protected save.

In the control server that manages and supervises a plurality of closed circuit television sets and landings, the restoration priority is determined based on the state change time and the alarm signal or the emergency alarm signal transmitted by the alarm signal transmission unit.

According to the closed circuit television according to the present invention,

First, calibration can be performed by applying an automatic correction method that is appropriate to the situation.

Second, the cause of the situation requiring correction can be identified and analyzed.

Third, automatic correction is carried out so that the surveillance area can be taken without interruption.

Fourth, if automatic calibration is not possible, emergency alarms are sent to the control server, which makes it easy to identify the cause of the change in the equipment and the status change of the control server.

Fifth, when a typhoon or an earthquake occurs, it is possible to provide specific grounds for determining where to restore a facility in order to make the most of limited time, manpower, and costs. In other words, it provides basic data for quick decision making on facility restoration priorities.

1 is a calibration flowchart of a closed circuit television according to a preferred embodiment of the present invention.
2 is a data construction flowchart of a correctable judgment table of a closed circuit television according to a preferred embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately The present invention should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention.

Therefore, the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.

1 is a calibration flowchart of a closed circuit television according to a preferred embodiment of the present invention.

Referring to FIG. 1, the closed circuit television of the present invention comprises a camera unit, a sensor unit, a status change cause determination unit, a correctable determination unit, and an alarm signal transmission unit.

The camera section shoots the surveillance area, changes the direction when a state change occurs, captures the downward direction, or photographs the direct downward direction and stores the image for the downward direction separately. At this time, in case of a state change due to a physical collision such as a vehicle collision, a proof photograph may be separately stored and a fines may be imposed on the vehicle or person causing the cause by license plate recognition and facial recognition.

The sensor unit includes an inertial sensor on at least one of the housing and the camera unit, monitors at least one of the sensing value and the image data value, and provides data to the state change cause determination unit. At this time, examples of inertial sensors include various sensors other than an attitude sensor, a position sensor, a motion sensor, a gravity sensor, a geomagnetic sensor, and a gyro sensor. In addition, the sensor result value may be an intensity of a vibration or a change amount according to a distance reference value between a sensor configured in the enclosure and a sensor attached to the camera unit, and the image result value may include an object close to the center in the up / As shown in FIG.

The state change cause determining unit receives at least one of a first state change that causes a change in the post and a housing and a second state change that causes a change in the arm and the camera by receiving a signal of the state change from the sensor unit And provides the data to the correctable judgment unit. In this case, the first state change is a state change due to an earthquake, a ground settlement, a sinkhole, a ground state, a breakage of the housing sensor, And the state changes due to breakage and lens breakage. Since the elements with state changes bounded by the same classifications are located in close proximity to each other or move to the same copper line, the same type of state change occurs in other elements when a state change occurs.

The correctable possibility judging unit receives data from the state change cause judging unit and judges, based on the correctable judgment table, the cause of the change of state and the possibility of correction according to the degree of change and the correcting method. At this time, the correctable judgment table may include at least one of data constructed based on an initial setting using at least one of software and hardware, at least one of at least one of inclination, obstacle presence, and vibration of the camera unit due to a state change And it is a criterion for judging whether or not each situation can be corrected and how to calibrate it. The initial setting is to set the parameters according to the closed circuit television installation location in addition to the basic settings that have been set in the past, such as the vertical and horizontal images, the average frequency of the ground, the position of the obstacle and the position data of the center object For example.

The alarm signal transmission unit transmits the state change time and the alarm signal to the control server when it is determined that the correction is possible by the correctable judgment unit, and when it is judged that the correction is impossible by the correctable judgment unit, The emergency alarm signal requesting the state change time and the priority correction is transmitted and a protection storage is performed in which a lock is set to prevent the loss and deletion of data in the post-warn monitoring image and the direct-down image based on the state change. In this case, if the correction is not possible, it is impossible to take a picture due to breakage of the pontoon, damage to the camera, or appearance of an obstacle on the screen due to the descent or rise of the altitude. In addition, the protected image can be displayed on the screen as a still-cut or fast replay image.

In a control server that manages and supervises a plurality of closed circuit television sets and landings, a restoration priority is determined based on a state change time and an alarm signal or an emergency alarm signal transmitted by an alarm signal transmission unit. When determining the priorities for different surveillance areas with the same level of correction request signal, factors such as crime frequency, theft risk facility, and child protection area are considered.

2 is a data construction flowchart of a correctable judgment table of a closed circuit television according to a preferred embodiment of the present invention.

According to Fig. 2, the correctable judgment table of the closed-circuit television of the present invention is composed of data by basic setting, software and hardware.

As shown in the figure, the maximum and minimum ranges of the angular correction values can be exemplified as the data values input in the basic setting based on the three-axis rotator according to the type of the camera.

The construction of data according to software and hardware depends on the location where the closed-circuit television is installed.

Examples of the data values constructed by the software include upper, lower, left, and right base images as the zero-point adjustment reference, and objects near the center in the background. At this time, when the correction is possible by the software, zero point adjustment is performed based on at least one of upper, lower, left and right basic images and objects near the center in the background. Examples of objects near the center of the background include trees, fences, traffic lights, and signs. The reason why the center object on the screen is set as the object close to the center in the background is that if the center object is positioned at the edge or near the initial background when the screen is removed from the monitoring area when the state change occurs, Calibration may be difficult. In order to prevent this, a center object is set as a center object in the background which is likely to be caught on the screen even if a state change occurs.

Examples of the data values constructed by the hardware include the shaking of the paper and the ground through the sensor, the inclination due to the shaking, the degree of the state change, the average frequency of the installation site, and the maximum and minimum shortest lengths of the connection. At this time, when the correction is possible by hardware, the tilt correction using the three-axis rotator is performed in accordance with the degree of the change to correct. At this time, in the method of performing the correction, the hardware and the software can be corrected in parallel. For example, after calibration is completed by hardware, zero point adjustment by software is executed.

In the concept of facility management, data are provided to prevent and repair damage to facilities from damaging facilities such as sinkholes, hail, earthquakes, and typhoons. Examples of the data for preventing and restoring the damage of the facilities include shaking of the ground or the camera, sensor damage, and rotation and tilt of the camera. Also, based on the data for prevention and restoration of the facilities, it is possible to organize facility management priorities and prepare countermeasures appropriate to the situation. In order to organize priorities, consider factors such as maintenance cost, recovery time, importance, and risk of the facility in case of different facilities exposed to the same level of risk.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It is to be understood that various modifications and changes may be made without departing from the scope of the appended claims.

Claims (11)

A camera unit for photographing the surveillance area;
A sensor unit for monitoring a sensing value;
A state change cause determination unit for receiving a signal from the sensor unit and determining a cause of change of the state of the camera unit;
A correctable judgment unit for receiving data on the cause of the change from the state change cause determination unit and determining whether or not the correction is possible; And
And an alarm signal transmitting unit for transmitting an alarm signal to the control server,
The sensor unit includes:
Wherein at least one of the housing and the camera unit includes an inertial sensor and monitors at least one of a sensing value and an image data value to provide data to the state change cause determination unit,
The state change cause determination unit may determine,
By receiving a signal of the state change from the sensor unit,
A first state change where a change in the strut and the enclosure occurs; And
A second state change in which a change occurs in an arm and a camera, and provides data to the correctable judgment unit,
Wherein the correctable-
And a control unit that receives data from the state change cause determination unit and determines whether or not the correction is possible depending on the cause of the state change and the degree of change,
Wherein the correction-
At least one of data constructed based on an initial setting using at least one of software and hardware, and at least one of inclination, obstacle, and vibration of the camera unit due to a state change, Closed circuit television, which is the basis for determining whether and how to calibrate.
delete delete delete The method according to claim 1,
The construction of the data using the software,
And records at least one of a base image, a base image, and an object near the center in the background in the correctable judgment table.
6. The method of claim 5,
When correction by the software is possible,
And performs a zero point adjustment based on at least one or more of the upper, lower, left, and right base images and objects near the center in the background.
The method according to claim 1,
The construction of the data using the above-
And a correction method according to at least one of at least one of a shake of the ground and the pile, an inclination due to the shake, and a degree of the state change through the sensor is recorded in the correctable judgment table.
8. The method of claim 7,
When correction by the hardware is possible,
And performs tilt correction using the three-axis rotator in accordance with the state change degree.
The method according to claim 1,
The camera unit includes:
When a state change occurs, you can change the direction to shoot the direction directly below,
A closed-circuit television in which the image in the direct downward direction is photographed and the image in the direct downward direction is separately stored.
The method according to claim 1,
The alarm signal transmitter includes:
And transmits a state change time and an alarm signal to the control server when it is determined that the correction is possible by the correctable judgment unit, and when it is judged that the correction is impossible by the correctable judgment unit, A state change time, and an emergency alarm signal requesting priority correction,
And performs a protection setting for setting a lock to prevent loss and deletion of data in the front-and-rear monitoring video and the right-bottom video starting from the state change.
11. The method of claim 10,
Wherein in said control server for managing and supervising a plurality of closed circuit television and landings, a restoration priority is determined based on a state change time and an alarm signal, or an emergency alarm signal, transmitted by said alarm signal transmitter.

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