JP2007032811A - Camera platform system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a camera platform system which can be easily adjusted so as to make a balance of weight in front of and in the rear of a tilt spindle by displaying a balance state of a weight of a mounted object in the front and rear of the tilt spindle. <P>SOLUTION: A camera table 64 on the camera platform 14 levels once by driving a tiling motor 68, which is driven by a constant voltage fed from an electric source 122 to perform tilting so as to raise a front side of the table by a given angle and to do so similarly in the rear side thereof. A camera platform controller 100 judges the balance state by comparing a load applied to the tilting motor 68 in a tilting operation to lift the front and rear sides of the camera table 64 and then lights a balance state display lump 90. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a pan head system, and more particularly, to a pan head system in which a device such as a TV camera device is mounted and operated.

2. Description of the Related Art Conventionally, a pan head system has been developed in which a mounted object such as a TV camera device or a prompter is mounted on a pan head and operated. For example, Patent Literature 1 discloses a camera driving pan head device that remotely controls a television camera device or the like.
JP-A-9-46556

  By the way, the pan head system as described above is installed by adjusting the positional relationship between the mounted object and the tilt axis so that the weight balance of the mounted object is maintained before and after the tilt axis. However, for example, the weight balance before and after the tilt axis changes when the camera mounted on the pan head or the lens of the camera is replaced, or when a cable is connected to the mounted object. When the weight balance of the mounted object is not maintained before and after the tilt axis, there is a problem that it is difficult for the pan head to perform a smooth operation. For example, when the load is driven around the tilt axis and stopped, the camera naturally moves around the tilt axis due to the weight of the load. In addition, when the mounted object is driven around the tilt axis, a problem such as stopping during the driving may occur. The above-mentioned problems are particularly remarkable in the speed control type pan head system.

  The present invention has been made in view of such circumstances, and an object thereof is to provide a pan head system that can be easily adjusted so as to maintain the balance of weight before and after the tilt axis.

  In order to achieve the above object, a pan head system according to a first aspect of the present invention includes a support unit that supports a mounted object so as to be driven around a tilt axis, a driving unit that drives the mounted object around the tilt axis, and the tilt. A display unit that displays a balance state of the weight of the mounted object before and after the axis; and a control unit that determines a balance state of the weight of the mounted object before and after the tilt axis and displays the weight on the display unit. To do.

  According to the pan head system of the first aspect, the balance state of the mounted object before and after the tilt axis can be confirmed by the display means. Thereby, the user can move a load or attach a weight so that a balanced state is maintained.

  A pan head system according to a second aspect of the present invention is the pan head system according to the first aspect, wherein the control means controls the driving means so as to drive the mounted object forward and reverse around the tilt axis; Measuring means for measuring a load applied to the driving means when the mounted object is driven to rotate forward and reverse about the tilt axis, and based on the measured load, the balance state is determined and the balance state is determined. It is characterized by being displayed on a display means. The second aspect limits the balance state control means.

  A pan head system according to a third aspect of the present invention is the pan head system according to the second aspect, wherein the driving control means applies a constant voltage to the driving means to drive the driving means, and the measuring means is configured such that the mounted object is tilted. The control means measures the current value required by the driving means when driven forward and reverse around the axis, and the control means determines the balance state based on the measured current value and displays the current value on the display means. It is characterized by being displayed. The third aspect limits the load of the second aspect to a current value.

  A pan head system according to a fourth aspect of the present invention is the pan head system according to the first to third aspects, wherein the display means is balanced in a heavier one before and after the tilt axis or before and after the tilt axis according to the balance state. Is displayed.

  According to the pan head system of the fourth aspect, it is possible to confirm which of the front and rear of the tilt axis is heavy by the display means.

  A pan head system according to a fifth aspect further includes a tilt balance check mode switch for shifting from a normal operation mode to a tilt balance check mode according to the first to fourth aspects, wherein the control means includes the tilt balance check mode. When the switch is turned on, the balance state is determined and displayed on the display means.

  According to the pan head system according to the fifth aspect, the balance state is appropriately checked when the mounted camera, the TV camera device, the prompter, the photographing lens, or the like is replaced, or when the cable is connected to the mounted object. be able to.

  According to the present invention, the balance state of the mounted object before and after the tilt axis can be confirmed by the display means. Thereby, the user can move a load or attach a weight so that a balanced state is maintained.

  A preferred embodiment of a pan head system according to the present invention will be described below with reference to the accompanying drawings.

  1 and 2 are overall configuration diagrams of a photographing apparatus to which a pan head system according to an embodiment of the present invention is applied. 1 is a side view, and FIG. 2 is a front view as viewed from the left side of FIG. An imaging apparatus 10 shown in the figure is installed in, for example, a television studio, and is used by being remotely operated from a control room adjacent to the television studio.

  The photographing apparatus 10 includes a pedestal 12, a pan head 14, a TV camera device 16, and a prompter 18 that are pan head support devices. The pan head 14 and the TV camera device are installed by a pan head controller 20 in FIG. 1 installed in a control room. 16 is remotely operated, and various controls such as pan / tilt operation, focus and zoom adjustment of the TV camera device 16 are performed.

  The pedestal 12 has a post 22 configured in a cylindrical shape, and a plurality of legs 26, 26... For allowing the post 22 to stand on the floor surface 24 of the television studio is provided at the bottom of the post 22. It has been.

  The post 22 has a double cylinder structure including an outer cylinder 28 and an inner cylinder 30, and the inner cylinder 30 is connected to the outer cylinder 28 so as to extend and contract. In addition, an actuator 32 for extending and retracting the inner cylinder 30 is provided in the outer cylinder 28 of the post 22. The actuator 32 is a motor that drives a feeding means such as a telescopic rod 40 including three rods 34, 36, and 38 installed in parallel with the central axis of the inner cylinder 30, and a feeding screw that expands and contracts the telescopic rod 40. 42. Further, a cable 44 is accommodated in the outer cylinder 28 of the post 22.

  As shown in FIG. 1, a mounting base 48 for the pan head 14 is fixed to the head portion 46 of the inner cylinder 30. As shown in FIG. 3, a hollow pan shaft 50 is fixed to the mounting table 48 with a fixing member such as a bolt facing upward. A casing 52 of the camera platform 14 is rotatably supported on the pan shaft 50 via bearings 54 and 54. A worm wheel 56 is fixed to the upper part of the pan shaft 50, and a worm gear 58 is engaged with the worm wheel 56. The worm gear 58 is attached to the output shaft 62 of the pan motor 60 fixed to the inner peripheral surface of the casing 52. Accordingly, when the worm gear 58 is rotated by the pan motor 60, the worm gear 58 rotates around the fixed worm wheel 56, so that the casing 52 rotates around the pan shaft 50. That is, the casing 52 pans.

  As shown in FIG. 2, the casing 52 is U-shaped, and the camera base 64 includes an arm portion 64 </ b> A shaped to follow the inner surface of the casing 52. The casing 52 and the arm portion 64A are connected by a tilt shaft 66. A tilt motor 68 is built in the casing 52, and an output shaft of the tilt motor 68 is connected to a tilt shaft 66. As a result, the driving force of the tilt motor 68 is transmitted to the tilt shaft 66 indicated by a broken line in FIGS. Note that the output shaft of the tilt motor 68 and the tilt shaft 66 may be coupled via a gear or a pulley so that the driving force can be transmitted, for example.

  As described above, the television camera device 16 and the prompter 18 are mounted on the camera base 64. Therefore, when the tilt shaft 66 is rotated by the tilt motor 68, the camera base 64 tilts up and down around the tilt shaft 66, so that the television camera device 16 and the prompter 18 perform a tilt operation.

  The prompter 18 has a half mirror 70 that is inclined at about 45 °. An image display device 72 (for example, a liquid crystal monitor (LCD)) is attached to the camera base 64 below the half mirror 70, and an image such as a document displayed on the image display device 72 is projected onto the half mirror 70. It is like that. A photographing lens 74 of the TV camera device 16 is disposed behind the half mirror 70 (on the right side in FIG. 1). Thus, the person to be photographed is photographed by the television camera device 16 while viewing an image such as a document projected on the half mirror 70.

  By the way, as shown in FIG. 1, the cable 44 housed in the post 22 of the pedestal 12 has a slack portion 44 </ b> A so as to correspond to the extension of the inner cylinder 30 and has a substantially U shape. It is stored. The upper end portion 44B of the cable 44 is connected to a connector 76 provided on the head portion 46 of the inner cylinder 30, and the lower end portion 44C of the cable 44 is connected to a connector 78 provided on the lower portion of the post 22. . The connector 78 is connected to a connector (not shown) provided on the floor surface 24 of the television studio, for example. This connector (not shown) is connected to the pan / tilt head controller 20 disposed in the control room via a cable disposed under the floor of the television studio.

  On the other hand, the connector 76 has a V-shaped groove (not shown) formed on the head portion 46 and a V-shaped convex portion (not shown) formed on the mounting base 48 of the camera platform 14 fitted to the head 76. When the camera platform 14 is mounted on the portion 46, it is connected to the connector 80 attached to the installation table 48 shown in FIG. As shown in FIG. 3, a plurality of cables 82, 82... Are connected to the connector 80. These cables 82, 82... Are connected from the internal space 48 </ b> A of the installation base 48 to the hollow portion 50 </ b> A of the pan shaft 50. Are inserted into an L-shaped pipe 84 inserted through the casing 52 and wired independently from the casing 52 toward a necessary portion. For example, one of the cables 82, 82... Is disposed on the pan motor 60, and the remaining cables 82, 82... Are disposed toward the tilt motor 68, the TV camera device 16, the prompter 18, and the photographing lens 74. Is connected. Therefore, signals from the pan head controller 20 are transmitted to the pan motor 60, the tilt motor 68, the television camera device 16, the prompter 18, and the photographing lens 74, respectively, and these are remotely operated by the pan head controller 20.

  As shown in FIG. 2, an operation panel 86 is disposed on the prompter 18 side of the casing 52. The operation panel 86 is provided with the cables 82, 82. Accordingly, signals from the operation panel 86 are transmitted to the pan motor 60, the tilt motor 68, the television camera device 16, the prompter 18, and the photographing lens 74, and these are operated by the operation panel 86. The operation panel 86 is provided with a tilt balance check mode switch 88 and a balance state indicator lamp 90. The tilt balance check mode switch 88 and the balance state indicator lamp 90 may be disposed on the pan head controller 20 or on both the pan head controller 20 and the operation panel 86. The pan head controller 20 and the operation panel 86 will be described later.

  FIG. 4 is a block diagram of the photographing apparatus shown in FIGS. 1 and 2. As shown in FIG. 4, the pan head controller 20 includes a pan head operating unit 92, a lens operating unit 94, a camera operating unit 96, and a controller control unit 98. The pan head operating unit 92 is an operation member for operating the pan head 14 and includes a pan / tilt joystick, a pan / tilt head speed adjustment knob, a pan direction display unit, a tilt angle display unit, and the like. When the joystick is operated in the left-right direction, the panning motor 60 of the camera platform 14 is driven, and the TV camera device 16 pans at a speed corresponding to the operation amount. When the joystick is operated in the front-rear direction, the tilting motor 68 of the camera platform 14 is driven, and the television camera device 16 is tilted at a speed corresponding to the operation amount.

  The lens operation unit 94 is an operation member for operating the photographing lens 74, and includes a focus control knob, a zoom seesaw control lever, an iris control knob, an iris mode switch, and the like. When the focus control knob is rotated, focus adjustment can be performed, and the focus lens of the photographing lens 74 moves to a focus position corresponding to the rotation position. You can adjust the zoom by pressing either the left or right end of the zoom seesaw control lever, and shoot in the direction corresponding to the pressed end (tele side or wide side) at a speed corresponding to the amount of pressing. The zoom lens of the lens 74 moves.

  The camera operation unit 96 is an operation member for operating the television camera device 16 and includes various camera control buttons, a master pedestal knob, and the like. Examples of the camera control buttons include an operable button for enabling the operation of the camera body 16A, a gain switching button for switching the video signal gain, an A / B button for automatically adjusting the black balance, and an automatic white balance adjustment. A / W button to be used in, a shutter speed switching button for switching the shutter speed, and the like.

  The controller control unit 98 incorporated in the pan head controller 20 detects operations of various operation members of the pan head operation unit 92, the lens operation unit 94, and the camera operation unit 96, and performs various processes based on the detected operations. Execute. For example, when the controller control unit 98 detects an operation in the pan head operation unit 92, the lens operation unit 94, or the camera operation unit 96, the controller control unit 98 sends a control signal corresponding to the operation content to each of the clouds for controlling the pan head 14. The information is transmitted to the table control unit 100, the lens control unit 102 that controls the photographing lens 74, and the camera control unit 104 that controls the camera body 16A.

  The pan / tilt head control unit 100 acquires a pan azimuth and a tilt angle from each of the pan driving unit / position detecting unit 106 and the tilt driving unit / position detecting unit 108 of the pan head 14 and transmits a control transmitted from the controller control unit 98. Based on the signal, a drive signal is given to each of the pan driver / position detector 106 and the tilt driver / position detector 108. The pan driving unit / position detecting unit 106 and the tilt driving unit / position detecting unit 108 drive the pan motor 60 and the tilt motor 68 based on the driving signal given from the pan head control unit 100, respectively. Accordingly, the TV camera device 16 is panned and tilted at a panning speed and a tilting speed based on the operation of the joystick of the pan head operating unit 92.

  Further, the pan head control unit 100 appropriately transmits the pan azimuth and tilt angle data acquired from the pan driving unit / position detecting unit 106 and the tilt driving unit / position detecting unit 108 to the controller control unit 98.

  The lens control unit 102 acquires the zoom position, the focus position, and the aperture position from the zoom drive unit / position detection unit 110, the focus drive unit / position detection unit 112, and the aperture drive unit / position detection unit 114 of the photographing lens 74, respectively. Based on a control signal transmitted from the controller control unit 98, a drive signal is given to the zoom drive unit / position detection unit 110, the focus drive unit / position detection unit 112, and the aperture drive unit / position detection unit 114. The zoom drive unit / position detection unit 110, the focus drive unit / position detection unit 112, and the aperture drive unit / position detection unit 114 adjust the zoom lens, the focus lens, and the aperture, respectively, based on the drive signal given from the lens control unit 102. To drive. As a result, the photographing lens 74 is set to a zoom position, a focus position, and an aperture position based on operations of the zoom seesaw control lever, the focus control knob, and the iris control knob of the lens operation unit 94.

  The lens control unit 102 also appropriately controls the zoom position, focus position, and aperture position data acquired from the zoom drive / position detection unit 110, the focus drive / position detection unit 112, and the aperture drive / position detection unit 114. It transmits to the control part 98.

  Based on the control signal transmitted from the controller control unit 98, the camera control unit 104 gives command signals for instructing the contents of various processing operations to the various processing units 116 in the camera body 16A. Thereby, the processing operation of the camera body 16A is set to the content based on the operation of the camera control button and the master pedestal knob of the camera operation unit 96.

  FIG. 5 is a circuit diagram showing a configuration of the tilt driving unit / position detecting unit 108. As shown in FIG. 5, the tilt driving unit / position detecting unit 108 includes mode changeover switches 118A and 118B, a servo amplifier 120, a power supply circuit 122, an inverting circuit 124, a differential amplifier 126, and an A / D converter 128.

  The mode changeover switches 118A and 118B are controlled by a mode changeover signal transmitted from the pan head control unit 100 via the bus 130. In the normal operation mode, mode change-over switches 118A and 118B are connected to terminals A1 and B1, respectively. The servo amplifier 120 controls the operation of the tilt motor 68 by controlling the direction of the voltage and the like based on the drive signal given from the camera platform controller 100 in the normal operation mode.

  When the tilt balance check mode switch 88 is pressed on the operation panel 86, the normal operation mode shifts to a tilt balance check mode for checking the weight balance before and after the tilt shaft 66. In the tilt balance check mode, the mode changeover switches 118A and 118B are controlled by a mode changeover signal transmitted from the pan head control unit 100 and are connected to terminals A2 and B2, respectively. Then, a constant voltage (for example, 5 V) is supplied from the power supply circuit 122 to the tilting motor 68 to be driven, and tilting is performed so that the camera table 64 on the camera platform 14 is once horizontal. Then, the tilting motor 68 is driven by a constant voltage supplied from the power supply circuit 122, and tilting is performed so that the front side (prompter 18 side in FIG. 1) is raised by a predetermined angle. The input side of the differential amplifier 126 is connected to both sides of the resistor R, and the output side is connected to the A / D converter 128. As a result, the current value I1 that has flowed through the tilt motor 68 during the tilting operation for raising the front side of the camera base 64 by a predetermined angle is output to the pan head control unit 100 via the A / D converter 128.

  Next, a motor forward / reverse switching signal for switching the motor rotation direction is output from the pan head control unit 100, and the direction of the voltage supplied from the power supply circuit 122 is inverted by the inversion circuit 124. As a result, the rotation direction of the tilt motor 68 is reversed.

  Next, the tilting motor 68 is driven by a constant voltage supplied from the power supply circuit 122 and tilting is performed so that the camera base 64 is once horizontal, and then the rear side (the television shown in FIG. 1). Tilting is performed so that the camera device 16 side is raised by a predetermined angle (the same angle as when the front side of the camera stand 64 is raised). The current value I2 that flows to the tilting motor 68 during the tilting operation for raising the rear side of the camera base 64 by a predetermined angle is output to the pan head control unit 100 via the A / D converter 128.

  The pan / tilt head control unit 100 compares the current values I1 and I2 flowing through the tilt motor 68 during the tilting operation for raising the front side and the rear side of the camera base 64. When the current values I1 and I2 are equal (or the absolute value of the difference between the current values I1 and I2 (| I1-I2 |) is equal to or less than a predetermined positive value), the pan head controller 100 controls the operation panel 86. A command signal for lighting the balance status indicator lamp 90B (OK) is output, and the balance status indicator lamp 90B (OK) is lit. Thereby, the user can confirm that the balance of weight is balanced before and after the tilt shaft 66.

  When the current value I1 is larger than I2 (or the difference between the current values I1 and I2 (I1-I2) is larger than a predetermined positive value), the balance state of the operation panel 86 from the pan head control unit 100 is determined. A command signal for turning on the indicator lamp 90A (front weight) is output, and the balance state indicator lamp 90A (front weight) lights up. On the other hand, when the current value I2 is larger than I1 (or the difference (I2−I1) is larger than a predetermined positive value), the balance state indicator lamp 90C (rear weight) of the operation panel 86 from the pan head control unit 100. Is output, and the balance status indicator lamp 90C (rear weight) is lit. Thereby, the user can confirm which of the front and rear of the tilt shaft 66 is heavy.

  FIG. 6 is a plan view showing the upper surface of the camera base 64. As shown in FIG. 6, screw holes 132, 132... For fixing mounted objects such as the television camera device 16, the prompter 18, and the image display device 72 are formed on the upper surface of the camera base 64 in the front-rear direction of the tilt shaft 66 ( They are formed at predetermined intervals in the direction of the arrow in the figure. The user can adjust the position where the load is mounted on the camera base 64 with reference to the balance state indicator 90 so that the balance of weight is balanced. In this way, the weight balance before and after the tilt shaft 66 can be maintained by repeatedly checking the weight balance before and after the tilt shaft 66 in the tilt balance check mode and adjusting the position of the mounted object.

  In this embodiment, the position where the load is mounted is adjusted by the screw holes 132, 132... On the camera base 64 to adjust the balance state. A mechanism for sliding in the front-rear direction may be provided. Further, instead of adjusting the mounting position of the load, for example, by attaching a weight to the camera base 64 or by attaching a mechanism for sliding the weight in the front-rear direction of the tilt shaft 66 to the camera base 64. The balance state may be adjusted. Further, in the tilt balance check mode, a balance state can be adjusted by providing a mechanism for automatically sliding the entire mounted object or the weight on the camera base 64 according to the current values I1 and I2. Also good.

  Next, the flow of processing in the tilt balance check mode will be described with reference to FIG. FIG. 7 is a flowchart showing a processing flow of the camera platform controller 100 in the tilt balance check mode.

  First, when it is not in the tilt balance check mode (No in step S10, normal operation mode processing (main routine) is performed (step S24), on the other hand, the tilt balance check mode switch 88 is pressed on the operation panel 86. Then, the normal operation mode is shifted to a tilt balance check mode for checking the weight balance before and after the tilt shaft 66 (Yes in step S10).

  Next, the mode changeover switches 118A and 118B are controlled by the mode changeover signal transmitted from the pan head control unit 100, and are connected to the terminals A2 and B2 (tilt balance check mode side), respectively (step S12). Then, a constant voltage (for example, 5 V) is supplied from the power supply circuit 122 to the tilting motor 68 to be driven, and tilting is performed so that the camera table 64 on the camera platform 14 is once horizontal.

  Next, a motor forward / determination switching signal for making the rotation direction of the tilt motor 68 forward is output from the pan head control unit 100 (step S14). Then, the tilting motor 68 is driven by the constant voltage supplied from the power supply circuit 122 to perform normal rotation, and tilting is performed so that the front side (prompter 18 side in FIG. 1) is raised by a predetermined angle. The pan head control unit 100 controls the tilt motor 68 during the tilting operation to raise the front side of the camera base 64 by a predetermined angle based on a signal output to the pan head control unit 100 via the A / D converter 128. The flowing current value I1 is measured (step S16).

  Next, a motor forward / determination switching signal that reverses the rotation direction of the tilting motor 68 is output from the pan head control unit 100 (step S18). Then, the tilting motor 68 is driven by the constant voltage supplied from the power supply circuit 122 and reversed, and tilting is performed so that the camera base 64 is once horizontal, and then the rear side (the television shown in FIG. 1). Tilting is performed so that the camera device 16 side is raised by a predetermined angle (the same angle as when the front side of the camera stand 64 is raised). The pan / tilt head control unit 100 controls the tilt motor 68 during a tilting operation for raising the rear side of the camera base 64 by a predetermined angle based on a signal output to the pan / tilt head control unit 100 via the A / D converter 128. Is measured (step S20).

  The pan head control unit 100 compares the current values I1 and I2 flowing to the tilting motor 68 during the tilting operation for raising the front side and the rear side of the camera base 64 by a predetermined angle, and determines the balance state. Then, the balance state indicator lamp 90 is turned on (step S22). Then, when a predetermined time (for example, several seconds to several tens of seconds) elapses, the balance status indicator lamp 90 is turned off and the normal operation mode (main routine) is returned (step S24).

  According to this embodiment, the balance state of the mounted object before and after the tilt shaft 66 can be confirmed by the balance state indicator lamp 90. Thereby, the user can move a load or attach a weight so that a balanced state is maintained. Also, the balance state is appropriately checked by the tilt balance check switch 88 when the mounted camera, the TV camera device 16, the prompter 18, the photographing lens 74, or the like is replaced, or when a cable is connected to the mounted object. Can do.

  In the present embodiment, the balance state is determined based on the current value that flows when the tilt motor 68 is rotated forward and reverse. However, the present invention is not limited to this. For example, the determination may be made based on the amount of electric power required when the tilt motor 68 is rotated forward and reverse, or the torque around the tilt shaft 66 when the tilt motor 68 is driven is measured. Also good.

1 is an overall configuration diagram (side view) of a photographing apparatus to which a pan head system according to an embodiment of the present invention is applied. 1 is an overall configuration diagram of a photographing apparatus to which a pan head system according to an embodiment of the present invention is applied (a front view as viewed from the left side of FIG. 1). Sectional drawing which expands and shows a part of pan head 14 Block diagram of the photographing apparatus 10 Circuit diagram showing the configuration of the tilt drive / position detector 108 A plan view showing an upper surface of the camera base 64 Flowchart showing the processing flow of the pan head control unit 100 in the tilt balance check mode

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Shooting device, 12 ... Pedestal, 14 ... Head, 16 ... Television camera device, 18 ... Prompter, 20 ... Head controller, 22 ... Post, 24 ... Floor of TV studio, 26 ... Leg, 28 ... Outside Cylinder, 30 ... Inner cylinder, 32 ... Actuator, 34, 36, 38 ... Rod, 40 ... Telescopic rod, 42 ... Motor, 44 ... Cable, 46 ... Head part, 48 ... Installation table, 50 ... Pan shaft, 52 ... Casing , 54 ... Bearing, 56 ... Worm wheel, 58 ... Worm gear, 60 ... Pan motor, 62 ... Output shaft, 64 ... Camera stand, 66 ... Tilt shaft, 68 ... Tilt motor, 70 ... Half mirror, 72 ... Image display Device: 74 ... Photography lens, 76, 78, 80 ... Connector, 82 ... Cable, 84 ... Pipe, 86 ... Operation panel, 88 ... Tilt balance check mode , 90... Balance state indicator light, 92... Pan head operation section, 94... Lens operation section, 96... Camera operation section, 98. Camera control unit 106 ... Pan drive unit / position detection unit 108 ... Tilt drive unit / position detection unit 110 ... Zoom drive unit / position detection unit 112 ... Focus drive unit / position detection unit 114 ... Aperture drive unit / Position detection unit 116 ... various processing units 118A and 118B ... mode changeover switch 120 ... servo amplifier 122 ... power supply circuit 124 ... inverting circuit 126 ... differential amplifier 128 ... A / D converter 130 ... bus 132 screw holes

Claims (5)

Support means for supporting the mounted object so as to be able to drive around the tilt axis;
Driving means for driving the mounted object around the tilt axis;
Display means for displaying a weight balance state of the mounted object before and after the tilt axis;
Control means for determining a balance state of the weight of the mounted object before and after the tilt axis and displaying on the display means;
A pan head system characterized by comprising:   The control means includes a drive control means for controlling the driving means so that the mounted object is rotated forward and reversely about the tilt axis, and the mounted object is driven forward and reversely about the tilt axis. 2. The measuring device according to claim 1, further comprising a measuring unit that measures a load applied to the driving unit from time to time, wherein the balance state is determined based on the measured load and displayed on the display unit. Pan head system. The drive control means applies a constant voltage to the drive means to drive the drive means,
The measuring means measures a current value required by the driving means when the mounted object is driven to rotate forward and reverse around the tilt axis,
3. The pan head system according to claim 2, wherein the control unit determines the balance state based on the measured current value and causes the display unit to display the balance state.   4. The display device according to claim 1, wherein the display unit performs a display indicating that the heavier one before and after the tilt axis or the balance is maintained before and after the tilt axis according to the balance state. 5. The pan head system according to claim 1. A tilt balance check mode switch for shifting from the normal operation mode to the tilt balance check mode is further provided.
5. The cloud according to claim 1, wherein when the tilt balance check mode switch is turned on, the control unit determines the balance state and displays the balance state on the display unit. Stand system.

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