JP2013046213A - Monitor camera and control method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a load on an arrangement work of a user even when a monitor camera is arranged on either a ceiling or a wall, and also to allow the vertical direction of a captured image to coincide with the vertical direction of a subject.SOLUTION: A monitor camera 10 having a lens part 52 and to be arranged on an arrangement surface includes: a motor 22 capable of rotating the lens part 52 around a first pan rotation axis 14a vertical to the arrangement surface and also capable of rotating the lens part 52 around a second pan rotation axis 41a parallel to the arrangement surface; and a CPU 15a for controlling the motor 22 to rotate the lens part 52 around the first pan rotation axis 14a when the arrangement surface is a ceiling part 1a and controlling the motor 22 to rotate the lens part 52 around the second pan rotation axis 41a when the arrangement surface is a wall surface part 1b.

Description

  The present invention relates to a surveillance camera that is installed in a building such as a store, a hotel, a bank, or a station and monitors a suspicious person or the like. More specifically, the present invention relates to a surveillance camera that can be mounted and used under various installation conditions such as ceiling installation and wall installation.

  Currently, surveillance cameras are used in various places such as stores, hotels, banks, and stations. A pan / tilt type surveillance camera, which is an example of such a surveillance camera, has a pan rotation mechanism and a tilt rotation mechanism, and captures an image by changing the direction of the photographing unit in a photographing direction desired by the user. Can do.

  By the way, since the pan / tilt type surveillance camera is assumed to be attached to the ceiling, the pan rotation axis becomes horizontal when attached to the wall. The vertical direction does not match the vertical direction of the subject. As a result, the captured image may be difficult to see.

  For example, the monitoring camera 200 in FIG. 8 is installed on the ceiling 100 a of the building 100, and the monitoring camera 300 is installed on the wall 100 b of the building 100. Here, since the pan rotation axis P100 of the monitoring camera 200 is perpendicular to the ceiling portion 100a, the vertical direction of the captured image does not coincide with the vertical direction of the subject even if the monitoring camera 200 performs pan rotation. There is no.

  On the other hand, the pan rotation axis P200 of the monitoring camera 300 is perpendicular to the wall portion 100b and parallel to the ceiling portion 100a. For this reason, depending on the shooting direction of the monitoring camera 300, the top and bottom of the captured image do not coincide with the top and bottom of the subject, making it difficult to see the captured image. If the captured image is difficult to see, it is difficult for the observer who is monitoring this captured image to immediately know the status of the monitored object, and even if a crime such as shoplifting occurs, it will not be immediately noticed and the culprit will be missed. It can happen.

  Patent Document 1 discloses a monitoring camera that can match the vertical direction of a captured image with the vertical direction of a subject. The surveillance camera selects either one of a first posture in which the pan rotation axis of the imaging lens is orthogonal to the installation surface and a second posture in which the pan rotation axis of the imaging lens is parallel to the installation surface. It has a structure in which an imaging lens can be attached to a pedestal.

JP 2008-035504 A

  However, when the surveillance camera disclosed in Patent Document 1 is installed on the wall, the user manually removes the exterior cover of the surveillance camera and places the imaging lens in the second posture before the installation. It was necessary to attach to the pedestal. When the surveillance camera disclosed in Patent Document 1 is installed on the ceiling, the user manually removes the exterior cover of the surveillance camera and places the imaging lens in the first posture before the installation. It was necessary to attach to the pedestal.

  The present invention has been made in view of the above points. That is, regardless of whether the main body is installed on the ceiling or the wall, the user can reduce the installation work load, and the surveillance camera that can match the vertical direction of the captured image with the vertical direction of the subject, and its A control method can be provided.

  In order to achieve the above object, a surveillance camera according to the present invention is a surveillance camera that includes a lens unit including a photographing optical system and is installed on an installation surface, the first pan being an axis perpendicular to the installation surface. First pan rotation means for rotating the lens portion around a rotation axis; and second pan rotation means for rotating the lens portion around a second pan rotation axis that is an axis parallel to the installation surface. The installation surface determination means for determining whether the installation surface is a ceiling or a wall, and when the installation surface determination means determines that the installation surface is a ceiling, the first pan rotation And a pan control unit that controls the second pan rotation unit when the installation surface determination unit determines that the installation surface is a wall.

  In order to achieve the above object, a monitoring camera control method according to the present invention includes a lens unit including a photographing optical system, and the lens unit around a first pan rotation axis that is an axis perpendicular to the installation surface. First pan rotation means for rotating, and second pan rotation means for rotating the lens unit around a second pan rotation axis which is an axis parallel to the installation surface, and is installed on the installation surface In the monitoring camera control method, an installation surface determination step for determining whether the installation surface is a ceiling or a wall, and the installation surface determination step determines that the installation surface is a ceiling. The first pan rotation means is controlled, and when the installation surface determination step determines that the installation surface is a wall, the pan control controls the second pan rotation means. And a step.

  According to the present invention, regardless of whether the main body is installed on the ceiling or the wall, the user's installation work load can be reduced, and the vertical direction of the captured image can be matched with the vertical direction of the subject. A surveillance camera and a control method thereof can be provided.

It is a figure which shows the installation state of the monitoring camera 10 which concerns on embodiment of this invention. It is sectional drawing of the surveillance camera 10 which concerns on embodiment of this invention. It is an expanded sectional view of the 1st pan rotation mechanism part concerning the embodiment of the present invention. It is a section perspective view of surveillance camera 10 in the state installed in the ceiling concerning the embodiment of the present invention. It is a section perspective view of surveillance camera 10 in the state installed in the wall concerning the embodiment of the present invention. It is a block diagram which shows the structure for control of the surveillance camera 10 which concerns on embodiment of this invention. It is a flowchart which shows the pan rotation control process based on embodiment of this invention. It is a figure which shows the installation state of the conventional surveillance camera.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings and FIGS.

  FIG. 1 is a diagram illustrating a state in which a monitoring camera 10 according to the present embodiment is installed. FIG. 1 shows a case where the monitoring camera 10 is used in a state where it is installed on the ceiling portion 1a of the building 1 and a case where it is used in a state where the monitoring camera 10 is installed on the wall surface portion 1b of the building 1. Has been.

  As shown in FIG. 1, in a state where the monitoring camera 10 is installed on the ceiling 1a, the axis P1 is perpendicular to the ceiling 1a, and the axis P2 is parallel to the ceiling 1b. On the other hand, in a state where the surveillance camera 10 is installed on the wall surface portion 1b, the axis P1 is perpendicular to the wall surface portion 1b, and the axis P2 is parallel to the wall surface portion 1b.

  In the present embodiment, the case where the monitoring camera 10 is directly installed on the ceiling portion 1a or the wall surface portion 1b is shown, but the present invention is not limited to this. For example, the monitoring camera 10 may be configured so that a portion other than the dome cover 11 is installed in a state where it is embedded in the ceiling portion 1a or the wall surface portion 1b.

  Next, the configuration of the monitoring camera 10 according to the present embodiment will be described with reference to FIGS. Here, FIG. 2 is a cross-sectional view of the monitoring camera 10 in the present embodiment. FIG. 3 is an enlarged cross-sectional view illustrating details of the configuration of the first pan rotation mechanism unit in the monitoring camera 10 according to the present embodiment. FIG. 4 is a cross-sectional perspective view of the surveillance camera 10 installed on the ceiling according to the present embodiment. FIG. 5 is a cross-sectional perspective view of the surveillance camera 10 installed on a wall according to the present embodiment.

  The dome cover 11 is a transparent or translucent plastic cover member, and is formed in a hemispherical shape. The dome cover 11 is fixed to the upper case 12 by screws (not shown).

  The upper case 12 is fixed to the lower case 13 with the dome cover 11 attached. The lower case 13 is attached with the upper case 12 and supports the electric substrate 15 and the base portion 14. The attachment surface of the lower case 13 is provided with an attachment structure for the ceiling portion 1a and the wall surface portion 1b. On the electric board 15, a CPU 15 a, an installation direction detection unit 15 b, and a photographing posture storage unit 15 c are mounted.

  In addition, although the electric board | substrate 15 in this embodiment is comprised with one board | substrate, it is not restricted to this. For example, the electric substrate 15 may be constituted by two or more substrates.

  The CPU 15a processes the video signal output from the lens unit 52, which will be described later, and performs compression encoding processing on the processed video signal. Then, the CPU 15a distributes the video signal subjected to the compression encoding process to an external camera control device via a network, for example. Further, the CPU 15a controls a motor 22 and the like which will be described later so that the lens unit 52 is rotated by panning and tilting.

The base part 14 is fixed to the lower case 13 with screws (not shown). The base portion 14 is provided with a first pan rotation shaft 14a. The base portion 14 supports the first pan rotating table 21 so as to be rotatable about the first pan rotating shaft 14a. (Hereinafter, the rotation of the first pan turntable 21 around the first pan rotation shaft 14a is referred to as “first pan rotation operation”.)
In addition, as shown in FIG. 3 etc., the 1st pan rotation axis 14a and the axis | shaft P1 correspond substantially. Further, the first pan rotating shaft 14a in the present embodiment corresponds to a ceiling-installing pan rotating shaft.

The first pan turntable 21 supports the second pan turntable 41 so as to be rotatable about the second pan rotation shaft 41a. The second pan rotation shaft 41 a is disposed on the second pan rotation table 41. (Hereinafter, the rotation of the second pan rotating table 41 around the second pan rotating shaft 41a is referred to as a “second pan rotating operation”.)
As shown in FIGS. 4 and 5, the second pan rotation shaft 41a and the shaft P2 substantially coincide with each other. Further, the second pan rotation shaft 41a in the present embodiment corresponds to a wall-installing pan rotation shaft.

  Here, the first pan turntable 21 includes a motor 22, a worm 23, a first gear 24, a second gear 25, a third gear 27, and a fourth gear 28. Arranged. The motor 22 is a power source for the first pan rotation operation and a power source for the second pan rotation operation, and rotates the worm 23. The worm 23 rotates the worm wheel of the first gear 24 and the worm wheel of the third gear 27.

  The first gear 24 is a reduction gear composed of a worm wheel and a spur gear, and transmits the power of the motor 22 to the second gear 25. The second gear 25 is a gear that rotates about the first pan rotation shaft 14a. Here, the spur gear of the first gear 24 meshes with a part 25 a of the second gear 25. The first gear 24 and the second gear 25 correspond to a power transmission mechanism that transmits the power of the first pan rotation operation.

  The third gear 27 is a reduction gear composed of a worm wheel and a spur gear, and transmits the power of the motor 22 to the fourth gear 28. The fourth gear 28 is a gear that rotates about the second pan rotation shaft 41a. The third gear 27 and the fourth gear 28 transmit power of the second pan rotation operation. It corresponds to.

The second pan turntable 41 and the tilt turntable 51 are provided with a known tilt rotation mechanism (not shown). Accordingly, the second pan turntable 41 supports the tilt turntable 51 so as to be rotatable about the tilt rotation shaft 51a as a rotation axis. The tilt rotation axis 51a is an axis orthogonal to the second pan rotation axis 41a. (Hereinafter, the rotation of the tilt turntable 51 around the tilt rotation shaft 51a is referred to as “tilt rotation operation”.)
The lens unit 52 including the photographing optical system is covered with the dome cover 11 and shoots the outside world (subject) from the inside of the monitoring camera 10 to generate a video signal. The lens unit 52 includes a lens barrel, a fixed lens fixed to the lens barrel, a movable lens that performs zoom adjustment and focus adjustment, a motor that moves the movable lens, an image sensor such as a CMOS sensor, and an electric board on which the image sensor is mounted. Etc.

  Note that these fixed lens, movable lens, motor, image sensor, and electric substrate are not shown. The video signal generated by the lens unit 52 is transmitted to the electric board 15 by a cable (not shown).

  Then, the detail of a structure of the 1st pan rotation mechanism part in the monitoring camera 10 which concerns on this embodiment is demonstrated.

  As shown in FIG. 3, the first elastic member 26 is elastically deformed between a part 14 c of the first pan rotating shaft 14 a and a part 21 a of the first pan rotating table 21. Due to the elastic deformation of the first elastic member 26, a load torque T1 is generated around the first pan rotating shaft 14a. With this load torque T1, even when the motor 22 is in a non-energized state and the first solenoid actuator 16 is in a non-energized state, the posture of the first pan turntable 21 is maintained (first The pan turntable 21 can be held at the stop position).

  A part 14 b of the first pan rotating shaft 14 a is inserted between the first pan rotating base 21 and the second gear 25. When the generated torque around the first pan rotation shaft 14a generated by the motor 22, the worm 23, the first gear 24, and the second gear 25 is T2, the relationship between T1 and T2 is T1 <T2. .

  The CPU 15a (not shown in FIG. 3) controls ON / OFF of power transmission for the first pan rotation operation by switching ON / OFF of the first solenoid actuator 16. Specifically, when the first solenoid actuator 16 is ON, the plunger 16a abuts against a part 25b of the second gear 25 as a stopper, and fixes the second gear 25 to the base portion 14. To do.

  When the friction torque around the first pan rotation shaft 14a between the base portion 14 and the second gear 25 when the first solenoid actuator 16 is ON is T3, the relationship between T2 and T3 is T2 <T3. Therefore, when the motor 22 rotates when the first solenoid actuator 16 is ON, the monitoring camera 10 performs the first pan rotation operation from T2 <T3.

  On the other hand, when the first solenoid actuator 16 is in the OFF state, the plunger 16a does not contact the second gear 25, and even if the motor 22 rotates, the second gear 25 remains on the first pan rotating shaft 14a. Idle around. Therefore, when the first solenoid actuator 16 is OFF, the monitoring camera 10 does not perform the first pan rotation operation.

  Then, the detail of a structure of the 2nd pan rotation mechanism part in the monitoring camera 10 which concerns on this embodiment is demonstrated.

  As shown in FIGS. 4 and 5, the second elastic member 29 is elastically deformed between the first pan rotating base 21 and a part of the second pan rotating shaft 41a. Due to the elastic deformation of the second elastic member 29, a load torque T4 is generated around the second pan rotating shaft 41a. By this load torque T4, even when the motor 22 is in a non-energized state and the second solenoid actuator 42 is in a non-energized state, the posture of the second pan turntable 41 is maintained (second pan pan (second pan). It is possible to hold the turntable 41 at its stop position).

  If the generated torque around the second pan rotation shaft 41a generated by the motor 22, the worm 23, the third gear 27, and the fourth gear 28 is T5, the relationship between T4 and T5 is T4 <T5. .

  The CPU 15a controls ON / OFF of power transmission for the second pan rotation operation by switching ON / OFF of the second solenoid actuator 42. Specifically, when the second solenoid actuator 42 is in an OFF state, a plunger (not shown) included in the second solenoid actuator 42 does not contact the part 28 b of the fourth gear 28. Therefore, even when the motor 22 rotates, the fourth gear 28 idles around the second pan rotation shaft 41a. That is, when the second solenoid actuator 42 is OFF, the monitoring camera 10 does not perform the second pan rotation operation.

  On the other hand, when the second solenoid actuator 42 is in the ON state, the plunger included in the second solenoid actuator comes into contact with a part 28b of the fourth gear 28 as a stopper, and the second pan turntable 41 is moved to the second position. 4 is fixed to the gear 28.

  If the friction torque around the second pan rotation shaft 41a between the second pan rotation table 41 and the fourth gear 28 in the state where the second solenoid actuator 42 is ON is T6, T5 and T6 The relationship is T5 <T6. If the motor 22 rotates while the second solenoid actuator 42 is ON, slippage occurs between the first pan turntable 21 and the second pan turntable 41 from T4 <T5. The camera 10 performs a second pan rotation operation.

  As described above, the CPU 15 a, the first solenoid actuator 16, and the second solenoid actuator 42 of the present embodiment transfer the power from the motor 22 to one of the first pan turntable 21 and the second pan turntable 41. It has a power transmission function to transmit selectively.

  Subsequently, FIG. 6 shows either the first pan turntable 21 or the second pan turntable 41 depending on whether the monitoring camera 10 is installed on the ceiling 1a or the wall 1b. It is a block diagram which shows the structure for rotating.

  The installation direction detection unit 15b in FIG. 6 includes, for example, a gravity sensor provided on the electric board 15, receives an instruction from the CPU 15a, detects the direction (state) in which the monitoring camera 10 is installed, The detected information is output to the CPU 15a as shooting posture information. Here, the shooting posture information is information indicating whether the shooting posture of the monitoring camera 10 is a ceiling suspension posture or a wall-mounting posture.

  Note that the installation direction detection unit 15b in this embodiment receives an instruction from the CPU 15a when the monitoring camera 10 is started for the first time after the installation work of the monitoring camera 10 is completed, and detects the direction in which the monitoring camera 10 is installed. It shall be.

  The photographing posture storage unit 15c is a nonvolatile memory, and stores photographing posture information input from the CPU 15a. Further, the motor 22 rotates the worm 23 in response to an instruction from the CPU 15a. The first solenoid actuator 16 receives an instruction from the CPU 15 a and switches whether the plunger 16 a is brought into contact with a part 25 b of the second gear 25. Similarly, the second solenoid actuator 42 receives an instruction from the CPU 15a and switches whether or not the plunger included in the second solenoid actuator 42 is brought into contact with the part 28b of the fourth gear 28.

  The CPU 15a comprehensively controls each unit of the monitoring camera 10. The CPU 15a acquires shooting posture information from the installation direction detection unit 15b, outputs the acquired shooting posture information to the shooting posture storage unit 15c, and stores the output shooting posture information in the shooting posture storage unit 15c. Further, the CPU 15a determines whether the monitoring camera 10 is installed on the ceiling 1a or whether the monitoring camera 10 is installed on the wall 1b based on the shooting attitude information stored in the shooting attitude storage unit 15c. judge.

  The CPU 15a has a horizontal determination function, and determines whether or not the tilt rotation shaft 51a is horizontal. For example, the CPU 15a in this embodiment determines whether or not the tilt rotation shaft 51a is horizontal by using an absolute position encoder (not shown) or the like.

  If the CPU 15a determines that the surveillance camera 10 is installed on the ceiling 1a and determines that the tilt rotation shaft 51a is not horizontal, the second pan turntable is used until the tilt rotation shaft 51a is horizontal. The motor 22 and the like are controlled to rotate 41. On the other hand, when the CPU 15a determines that the surveillance camera 10 is installed on the wall surface portion 1b and determines that the tilt rotation shaft 51a is not horizontal, the first pan turntable 51 until the tilt rotation shaft 51a becomes horizontal. The motor 22 and the like are controlled to rotate the motor 21. That is, the CPU 15a in the present embodiment has a leveling function.

  Furthermore, the CPU 15a can receive a pan movement command from an external camera control device connected via a network. That is, the CPU 15a in the present embodiment has a reception function for executing a pan movement command reception process.

  The CPU 15a in this embodiment has the following reception control function. That is, when the CPU 15a determines that the tilt rotation shaft 51a is horizontal, the CPU 15a performs reception processing by the reception function without executing the leveling function. On the other hand, if the CPU 15a determines that the tilt rotation shaft 51a is not horizontal, the CPU 15a executes a reception process using the reception function after a control process using the leveling function.

  In addition, when it is determined that the monitoring camera 10 is installed on the ceiling 1a, the CPU 15a performs the following control. That is, the CPU 15a rotates the first pan turntable 21 by the pan angle indicated by the pan movement command received from the external camera control device, so that the motor 22, the first solenoid actuator 16, and the second solenoid actuator 42 are rotated. And control. On the other hand, if the CPU 15a determines that the surveillance camera 10 is installed on the wall surface portion 1b, the CPU 15a performs the following control. That is, the CPU 15a rotates the second pan turntable 41 by the pan angle indicated by the pan movement command received from the external camera control device so that the motor 22, the first solenoid actuator 16, and the second solenoid actuator 42 are rotated. And control. Therefore, the CPU 15a in this embodiment has a pan control function.

  Subsequently, FIG. 7 shows one of the first pan turntable 21 and the second pan turntable 41 depending on whether the monitoring camera 10 is installed on the ceiling 1a or the wall 1b. It is a flowchart which shows the pan rotation control process to rotate.

  In step S101, the monitoring camera 10 determines whether the power of the monitoring camera 10 is turned on. If the monitoring camera 10 determines that the power of the monitoring camera 10 is turned on, the process proceeds to step S102. If the monitoring camera 10 determines that the power of the monitoring camera 10 is not turned on, the process proceeds to step S101. Return.

  In step S102, the CPU 15a reads out the current shooting posture information of the monitoring camera 10 from the shooting posture storage unit 15c.

  In step S103, the CPU 15a determines whether the installation surface of the monitoring camera 10 is a ceiling or a wall based on the shooting posture information read in step S102. That is, the CPU 15a in this embodiment has an installation surface determination function.

  Specifically, the CPU 15a determines that the installation surface of the monitoring camera 10 is the ceiling when the shooting posture information read in step S102 indicates a ceiling suspension posture. On the other hand, the CPU 15a determines that the installation surface of the monitoring camera 10 is a wall when the shooting posture information read in step S102 indicates a wall mounting posture.

  When the CPU 15a determines that the installation surface of the monitoring camera 10 is a ceiling, the process proceeds to step S104. When the CPU 15a determines that the installation surface of the monitoring camera 10 is a wall, the process proceeds to step S108.

  In step S104, the CPU 15a determines whether or not the tilt rotation shaft 51a is horizontal. If the CPU 15a determines that the tilt rotation axis 51a is horizontal, the process proceeds to step S106. If the CPU 15a determines that the tilt rotation axis 51a is not horizontal, the process proceeds to step S105.

  In step S105, the CPU 15a controls the motor 22, the first solenoid actuator 16, and the second solenoid actuator 42 so as to rotate the second pan turntable 41 until the tilt rotation shaft 51a becomes horizontal.

  Specifically, first, the CPU 15a turns off the first solenoid actuator 16, and turns on the second solenoid actuator. Next, the CPU 15a rotates the motor 22 so that the second pan rotating table 41 rotates until the tilt rotation shaft 51a becomes horizontal.

  In step S106, the CPU 15a determines whether a pan movement command has been received. If the CPU 15a determines that a pan movement command has been received, the process proceeds to step S107. If the CPU 15a determines that a pan movement command has not been received, the process returns to step S106.

  In step S107, the CPU 15a rotates the first pan turntable 21 by the pan angle indicated by the pan movement command received in step S106, so that the motor 22, the first solenoid actuator 16, and the second solenoid actuator 42 are rotated. And control.

  Specifically, first, the CPU 15 a turns on the first solenoid actuator 16 and turns off the second solenoid actuator 42. Next, the CPU 15a rotates the motor 22 so that the first pan turntable 21 rotates by the pan angle indicated by the pan movement command received in step S106.

  In step S108, the CPU 15a determines whether or not the tilt rotation shaft 51a is horizontal. If the CPU 15a determines that the tilt rotation axis 51a is horizontal, the process proceeds to step S110. If the CPU 15a determines that the tilt rotation axis 51a is not horizontal, the process proceeds to step S109.

  In step S109, the CPU 15a controls the motor 22, the first solenoid actuator 16, and the second solenoid actuator 42 so as to rotate the first pan turntable 21 until the tilt rotation shaft 51a becomes horizontal.

  Specifically, first, the CPU 15 a turns on the first solenoid actuator 16 and turns off the second solenoid actuator 42. Next, the CPU 15a rotates the motor 22 so that the first pan turntable 21 rotates until the tilt rotation shaft 51a becomes horizontal.

  In step S110, the CPU 15a determines whether a pan movement command has been received. If the CPU 15a determines that a pan movement command has been received, the process proceeds to step S111. If the CPU 15a determines that a pan movement command has not been received, the process returns to step S110.

  In step S111, the CPU 15a causes the motor 22, the first solenoid actuator 16, and the second solenoid actuator 42 to rotate the second pan turntable 41 by the pan angle indicated by the pan movement command received in step S110. To control.

  Specifically, first, the CPU 15a turns off the first solenoid actuator 16, and turns on the second solenoid actuator. Next, the CPU 15a rotates the motor 22 so that the second pan turntable 41 rotates by the pan angle indicated by the pan movement command received in step S110.

  As described above, in the present embodiment, the CPU 15a determines whether the installation surface on which the monitoring camera 10 is installed is a ceiling or a wall. Further, when the CPU 15a determines that the installation surface is a ceiling, the CPU 15a controls the motor 22 and the like so as to rotate the lens unit 52 around the first pan rotation shaft 14a that is an axis perpendicular to the installation surface. To do. On the other hand, when the CPU 15a determines that the installation surface is a wall, the CPU 15a controls the motor 22 and the like to rotate the lens unit 52 around the second pan rotation shaft 41a that is an axis parallel to the installation surface. .

  Accordingly, the lens unit around the appropriate pan rotation axis corresponding to the installation surface (ceiling part 1a or wall surface part 1b) of the monitoring camera 10 out of the first pan rotation axis 14a and the second pan rotation axis 41a. 52 can be rotated. As a result, the vertical direction of the subject and the vertical direction of the image captured by the monitoring camera 10 can be matched.

  Conventionally, there is a surveillance camera including a lens unit that can rotate a pan, a tilt, and an optical axis. In such an adjustment operation of the shooting direction at the time of installation of the surveillance camera and an operation of changing the shooting direction after installation, the user instructs pan rotation and tilt rotation according to the location (ceiling, wall) where the surveillance camera is installed. It was necessary to issue three operation instructions: an instruction and an optical axis rotation instruction.

  However, in the present embodiment, the CPU 15a determines whether or not the tilt rotation shaft 51a is horizontal. Further, when the CPU 15a determines that the tilt rotation shaft 51a is not horizontal and determines that the installation surface of the monitoring camera 10 is a ceiling, the CPU 15a rotates around the second pan rotation shaft 41a until the tilt rotation shaft 51a becomes horizontal. The motor 22 and the like are controlled so as to rotate the lens unit 52. On the other hand, when the CPU 15a determines that the tilt rotation shaft 51a is not horizontal and determines that the installation surface of the monitoring camera 10 is a wall, the CPU 15a rotates around the first pan rotation shaft 14a until the tilt rotation shaft 51a becomes horizontal. The motor 22 and the like are controlled so as to rotate the lens unit 52.

  Thus, regardless of which of the ceiling part 1a and the wall surface part 1b the monitoring camera 10 is installed, the user only has to issue two operation instructions, a pan rotation instruction and a tilt rotation instruction, to the monitoring camera 10. As a result, the workability of the user is improved in the adjustment operation of the shooting direction when the monitoring camera 10 is installed and the change operation of the shooting direction after the installation of the monitoring camera 10.

  In the present embodiment, the installation direction detection unit 15b detects the direction in which the monitoring camera 10 is installed and outputs the detected information as shooting posture information, but the present invention is not limited to this.

  For example, the CPU 15a receives shooting posture information from an external camera control device operated by the user via the network, outputs the received shooting posture information to the shooting posture storage unit 15c, and shoots the output shooting posture information. You may memorize | store in the attitude | position memory | storage part 15c. Here, it is assumed that the shooting posture information transmitted from the external camera control device to the monitoring camera 10 is set by the user when the monitoring camera 10 is installed.

  As mentioned above, although preferable embodiment of this invention was described, this invention is not limited only to this embodiment, A various deformation | transformation and change are possible within the range of the summary.

DESCRIPTION OF SYMBOLS 1a Ceiling part 1b Wall surface part 10 Surveillance camera 14a 1st pan rotating shaft 15a CPU
22 Motor 41a Second pan rotation shaft 52 Lens section

Claims (5)

A surveillance camera having a lens unit including a photographing optical system and installed on an installation surface,
First pan rotation means for rotating the lens unit around a first pan rotation axis that is an axis perpendicular to the installation surface;
Second pan rotation means for rotating the lens unit around a second pan rotation axis that is an axis parallel to the installation surface;
Installation surface determination means for determining whether the installation surface is a ceiling or a wall;
When the installation surface determination unit determines that the installation surface is a ceiling, the first pan rotation unit is controlled, and when the installation surface determination unit determines that the installation surface is a wall Includes pan control means for controlling the second pan rotation means;
A surveillance camera characterized by comprising: A tilt rotation means for rotating the lens unit around a tilt rotation axis that is an axis different from the first pan rotation axis and orthogonal to the second pan rotation axis;
When the installation surface determination unit determines that the installation surface is a ceiling, the second pan rotation unit is controlled so that the tilt rotation axis is horizontal, and the installation surface determination unit performs the installation. If it is determined that the surface is a wall, leveling means for controlling the first pan rotation means so that the tilt rotation axis is horizontal; and
Horizontal determination means for determining whether or not the tilt rotation axis is horizontal;
Control means for causing the leveling means to perform control processing when the level determining means determines that the tilt rotation axis is not horizontal;
The surveillance camera according to claim 1, further comprising: It further comprises receiving means capable of receiving a pan movement command to the pan control means from an external control device,
When the tilt determining axis is determined to be horizontal by the level determining unit, the control unit causes the receiving unit to execute a reception process without causing the leveling unit to perform a control process, and A reception control unit that causes the reception unit to execute a reception process after the control process by the leveling unit when the determination unit determines that the tilt rotation axis is not horizontal;
The surveillance camera according to claim 2, further comprising: A power source that generates power;
Power transmission means for transmitting the power generated by the power source to the first pan rotation means and the second pan rotation means;
Further comprising
The pan control unit controls the power transmission unit to transmit power to the first pan rotation unit when the installation surface determination unit determines that the installation surface is a ceiling, and The power transmission unit is controlled to transmit power to the second pan rotation unit when the installation surface determination unit determines that the installation surface is a wall. 4. The surveillance camera according to any one of 3 above. A lens unit including a photographing optical system, a first pan rotating means for rotating the lens unit around a first pan rotation axis which is an axis perpendicular to the installation surface, and a first axis which is an axis parallel to the installation surface. A second pan rotating means for rotating the lens unit around a pan rotation axis of the second pan, and a method for controlling a surveillance camera installed on the installation surface,
An installation surface determination step for determining whether the installation surface is a ceiling or a wall;
When it is determined in the installation surface determination step that the installation surface is a ceiling, the first pan rotating means is controlled, and in the installation surface determination step, it is determined that the installation surface is a wall. A pan control step for controlling the second pan rotation means;
A control method for a surveillance camera, comprising:

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