A luminaire system with shortest path rotation mode

Abstract

The application discloses a lamp system with shortest path rotation mode, comprising a lamp and a controller, the lamp comprises a light emitting device for emitting light, a support seat for supporting the rotation of the light emitting device, the rotatable angle of the light emitting device relative to the support seat is greater than 360 degrees, the controller receives a target angle instruction of the light emitting device relative to the support seat and controls the rotation of the light emitting device relative to the support seat, when the controller controls the rotation of the light emitting device in the shortest path rotation mode, according to whether the final position corresponding to the target angle is located in the positive 180-degree rotation interval or the negative 180-degree rotation interval from the current position of the light emitting device, the controller controls the light emitting device to directly rotate less than 180 degrees to the final position in the positive direction or to directly rotate less than 180 degrees to the final position in the negative direction. Instead of directly targeting the target angle, the corresponding final position is targeted, that is, the orientation of the light emitting device is directly concerned, which can significantly reduce the rotation time of the light emitting device.

Description

Technical Field

[0001] This invention relates to the field of lighting control technology, and more specifically, to a lighting system with a shortest path rotation mode. Background Technology

[0002] Intelligent lighting fixtures (such as moving head pattern lights, beam lights, and color-changing lights) are widely used in stage performances, film and television shooting, architectural landscape lighting, and entertainment venues because they can flexibly change the direction, color, pattern, and brightness of the beam. These fixtures typically contain one or more rotatable axes (such as horizontal or vertical axes), allowing their light-emitting devices (lamp heads or arms supporting the lamp heads) to be precisely pointed at the target location within a wide range of angles.

[0003] To achieve a wider range of light projection, many high-performance luminaires are designed with a rotation range greater than 360° (e.g., 540°). When controlling such luminaires, operators use external control devices (e.g., lighting control consoles) to send target angle commands to the luminaire. Traditional control logic is "angle-sequential rotation control," where the controller directly calculates the difference between the target angle and the current angle. If the difference is positive, the luminaire rotates forward (e.g., clockwise) by the angle corresponding to the difference; if the difference is negative, the luminaire rotates backward by the angle corresponding to the difference.

[0004] However, when the difference corresponds to a large angle (e.g., exceeding 180°), the rotation path of the lamp becomes too long, making it impossible to quickly rotate to the desired direction. Therefore, there is an urgent need in this field for an intelligent path planning method that enables the lamp to automatically identify and select the shortest physical rotation path when executing rotation commands, so as to quickly rotate to the desired direction and improve the overall system performance. Summary of the Invention

[0005] To overcome at least one of the defects described in the prior art, the present invention provides a lighting system with a shortest path rotation mode, which can quickly reach the final position corresponding to the target angle, saving rotation time and rotation wear.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a lighting system with a shortest path rotation mode, including a lighting fixture and a controller. The lighting fixture includes a light-emitting device for emitting light and a support base for supporting the rotation of the light-emitting device. The rotatable angle of the light-emitting device relative to the support base is greater than 360°. The controller receives a target angle command of the light-emitting device relative to the support base and controls the light-emitting device to rotate relative to the support base. When the controller controls the rotation of the light-emitting device in the shortest path rotation mode, it controls the light-emitting device to rotate directly forward by less than 180° to the final position or reverse by less than 180° to the final position, depending on whether the final position corresponding to the target angle is within a forward 180° rotation range or a reverse 180° rotation range of the current position of the light-emitting device.

[0007] The lighting system with the shortest path rotation mode controls the rotation of the light-emitting device for lamps with a rotatable angle greater than 360° relative to the support base using the shortest path rotation mode. When controlling the rotation of the light-emitting device, the controller does not directly target the target angle, but rather its corresponding final position, i.e., it directly focuses on the orientation of the light-emitting device. Each time the controller receives a target angle command, it calculates the corresponding final position and then directly rotates the light-emitting device from its current position in either a forward or reverse direction, choosing the method with the smaller required rotation angle, to the final position. This ensures that the orientation of the light-emitting device matches the desired orientation, with a rotation angle less than 180°. When the difference between the target angle and the current angle is greater than 180°, the rotation time of the light-emitting device can be significantly reduced. Especially when the difference between the target angle and the current angle is greater than 360°, at least one full rotation of the light-emitting device can be saved, conserving energy and extending the service life of mechanical components such as motors and slip rings.

[0008] Further, the controller calculates the difference between the target angle and the current angle of the light-emitting device, and converts the difference to an equivalent angle within the 0° to 360° range through a modulo 360 operation. When the equivalent angle is less than 180°, the controller controls the light-emitting device to rotate forward; when the equivalent angle is greater than 180°, the controller controls the light-emitting device to rotate backward. Alternatively, the controller calculates the difference between the target angle and the current angle of the light-emitting device, and normalizes it to the -180° to 180° range after a modulo 360 operation to obtain an equivalent angle with a positive or negative sign. When the equivalent angle is greater than 0, the controller controls the light-emitting device to rotate forward; when the equivalent angle is less than 0, the controller controls the light-emitting device to rotate backward. The controller calculates the difference between the target angle and the current angle, and maps it to the 0° to 360° range or the -180° to 180° range through a modulo 360 operation. Based on the magnitude or sign of the normalized difference, the controller determines whether to rotate forward (e.g., clockwise) or backward (e.g., counterclockwise).

[0009] Furthermore, the controller is configured to receive lighting control data from an external control device and, based on a stored channel-angle mapping table, convert the values ​​of the corresponding channels in the lighting control data into the target angle command. Without modifying any existing lighting control program, the luminaire can flexibly adapt to and integrate into a standard lighting control system, achieving the shortest path rotation mode.

[0010] Furthermore, the lighting control data follows the DMX, ART-Net, or sACN protocols. This provides a globally universal standardized language for lighting control, enabling consoles, lighting fixtures, and software from any brand to interconnect and collaborate within an open and scalable system.

[0011] Furthermore, when the controller controls the rotation of the light-emitting device in the angular sequence rotation mode, it controls the light-emitting device to rotate forward or backward to the target angle based on the positive or negative difference between the target angle and the current angle of the light-emitting device. The angular sequence rotation mode can achieve special rotation trajectory effects, such as back-and-forth oscillating scanning within a certain angular range.

[0012] Furthermore, the controller can manually or automatically switch between the shortest path rotation mode and the angle sequence rotation mode according to user instructions or preset conditions to meet different scenario requirements.

[0013] Furthermore, the rotatable angle of the light-emitting device relative to the support base is less than 720°. For conventional non-stepless rotating light-emitting devices, in order to prevent their rotation from exceeding a predetermined range and damaging the connecting lines, physical barriers are usually set to limit their maximum rotation angle.

[0014] Furthermore, when the controller controls the rotation of the light-emitting device in the shortest path rotation mode, if rotating the light-emitting device directly in the forward direction by less than 180° or in the reverse direction by less than 180° to the final position corresponding to the target angle would exceed its rotatable range, then the controller controls the light-emitting device to rotate in the opposite direction to the final position corresponding to the target angle. This avoids the rotation of the light-emitting device being restricted by the physical obstruction.

[0015] Furthermore, the controller stores safe zones in three-dimensional space. When the controller controls the rotation of the light-emitting device in the shortest path rotation mode, if the light-emitting device directly rotates less than 180° in the forward direction or less than 180° in the reverse direction to the final position corresponding to the target angle, and the light-emitting device conflicts with the safe zone, then the controller controls the light-emitting device to rotate in the opposite direction to the final position corresponding to the target angle. This prevents the light-emitting device from illuminating the audience area / camera, or colliding with the set / other lighting fixtures.

[0016] Furthermore, it also includes an angle detector for detecting the rotation angle of the light-emitting device relative to the support. Real-time detection of the position of the light-emitting device ensures the accuracy of the current angle information of the light-emitting device.

[0017] Furthermore, the angle detector is an absolute angle sensor. Upon power-on or calibration, the controller can immediately obtain the current angle information of the light-emitting device without requiring it to be rotated and reset before starting angle calculation.

[0018] Furthermore, upon receiving a calibration command or each time the lamp is powered on, the controller controls the light-emitting device to rotate in the shortest path rotation mode to its physical reference point for position calibration, and records the calibration position. This enables rapid angle calibration, unlike existing technologies that may require continuous rotation more than one revolution until physical obstruction occurs before angle calibration can be performed.

[0019] Furthermore, the light-emitting device also includes an effect disk that rotates to cause interference beams at different locations to produce light effects. The effect disk has a rotation angle greater than 360°, and the controller controls the rotation of the effect disk in a shortest path rotation mode to optimize the switching speed of the lamp's light effects.

[0020] Furthermore, the light-emitting device includes a lamp head with a light source mounted on it and an arm supporting the rotation of the lamp head, and the support base includes a housing supporting the rotation of the arm; or the light-emitting device includes a lamp head with a light source mounted on it, and the support base includes an arm supporting the rotation of the lamp head and a housing supporting the rotation of the arm. That is, the light-emitting device may include a lamp head and an arm, or it may only include a lamp head, and the arm or the lamp head has a shortest path rotation mode.

[0021] Furthermore, multiple lamps are connected to the same controller. When the controller controls the rotation of the light-emitting device in the shortest path rotation mode, it controls the light-emitting devices of all lamps to start asynchronously and reach the final position synchronously or sequentially. The controller can plan the start-up time and motion curve of the associated lamps, so that although the light-emitting devices start asynchronously (to avoid excessive current during simultaneous start-up), they can reach their respective final positions synchronously or precisely according to a preset timing sequence, so that they arrive at the final position uniformly or in a specific order.

[0022] Furthermore, it also includes a rotatable external control device. This external control device synchronizes its own rotation angle (less than 360°) to the controller and proportionally processes it as the target angle of the light-emitting device. The physical reference point used for calibration of the light-emitting device is located within the maximum angle range controlled by the external control device. When the controller controls the light-emitting device to rotate in the shortest path rotation mode, if the final position corresponding to the target angle and the current position of the light-emitting device are located on opposite sides of the physical reference point used for calibration, and the central angle between the final position and the current position is less than 180°, then the light-emitting device crosses the physical reference point used for calibration to reach the final position corresponding to the target angle. When using the shortest path rotation mode to ensure the external control device controls the rotation of the light-emitting device, special consideration is given to the smoothness when crossing physical reference points (such as the 0° position), making the beam movement direction consistent with the operator's intuition and avoiding beam "jumps" (i.e., rotating in the opposite direction to the final position without crossing the physical reference point). Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the lamp of the present invention.

[0024] Figure 2 This is a schematic diagram of the flow structure of the shortest path rotation mode of the present invention.

[0025] Figure 3 This is a schematic diagram of the structure of the present invention, which uses one controller to control multiple lamps.

[0026] Figure 4 This is a schematic diagram of the structure of the external control device for controlling the lighting fixtures according to the present invention.

[0027] Figure 5 This is a schematic diagram of the structure of the light-emitting device of the present invention crossing the physical reference point.

[0028] In the picture: 100. Light fixture; 110. Light-emitting device; 111. Lamp holder; 1111. Light source; 1112. Effect panel; 11121. Pattern panel; 11122. Color panel; 11123. CMY panel; 112. Arm; 113. Angle detector; 120. Support base; 121. Chassis; 130. Controller; 200. External control equipment. Detailed Implementation

[0029] The accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0030] like Figures 1 to 2 This invention provides a lighting system with a shortest path rotation mode, including a lighting fixture 100 and a controller 130. The lighting fixture 100 includes a light-emitting device 110 for emitting light and a support base 120 for supporting the rotation of the light-emitting device 110. The rotatable angle of the light-emitting device 110 relative to the support base 120 is greater than 360°. The controller 130 receives a target angle command from the light-emitting device 110 relative to the support base 120 and controls the light-emitting device 110 to rotate relative to the support base 120. When the controller 130 controls the light-emitting device 110 to rotate in the shortest path rotation mode, it controls the light-emitting device 110 to rotate directly forward by less than 180° to the final position or reverse by less than 180° to the final position, depending on whether the final position corresponding to the target angle is within a forward 180° rotation range or a reverse 180° rotation range of the current position of the light-emitting device 110.

[0031] The lighting system with the shortest path rotation mode controls the rotation of the light-emitting device 110, where the rotatable angle of the light-emitting device 110 relative to the support base 120 is greater than 360°, using the shortest path rotation mode. When controlling the rotation of the light-emitting device 110, the controller 130 does not directly target the target angle, but rather its corresponding final position, i.e., it directly focuses on the orientation of the light-emitting device 110. Each time the controller 130 receives a target angle command, it calculates the corresponding final position and then directly rotates the light-emitting device 110 from its current position in either a forward or reverse direction, choosing the method with the smaller required rotation angle, to the final position. This ensures that the orientation of the light-emitting device 110 matches the desired orientation, with a rotation angle less than 180°. When the difference between the target angle and the current angle is greater than 180°, the rotation time of the light-emitting device 110 can be significantly reduced. Especially when the difference between the target angle and the current angle is greater than 360°, at least one full rotation of the light-emitting device 110 can be saved, conserving energy and extending the service life of mechanical components such as motors and slip rings.

[0032] For example, if the current angle of the light-emitting device 110 is 10°, and the target angle is 180°, the controller 130 controls the light-emitting device 110 to rotate 170° clockwise (at which point the actual angle of the light-emitting device 110 is 180°). If the target angle is 210°, the controller 130 controls the light-emitting device 110 to rotate 160° counterclockwise (at which point the actual angle of the light-emitting device 110 is -150°). If the target angle is 400°, the controller 130 controls the light-emitting device 110 to rotate 30° clockwise (at which point the actual angle of the light-emitting device 110 is 40°). If the target angle is 710°, the controller 130 controls the light-emitting device 110 to rotate 20° counterclockwise (at which point the actual angle of the light-emitting device 110 is -10°).

[0033] When the final position corresponding to the target angle is exactly 180° forward or 180° backward of the current position of the light-emitting device 110, the light-emitting device 110 can rotate forward or backward to the final position. Of course, if there is a physical obstruction or unsafe area in one of the rotation directions, the other direction will be selected. When the final position corresponding to the target angle coincides with the current position of the light-emitting device 110, the light-emitting device 110 will remain stationary.

[0034] Optionally, the controller 130 is integrated inside the luminaire 100 or located outside the luminaire 100, and is independent of the luminaire 100.

[0035] In a preferred embodiment of the present invention, the controller 130 calculates the difference between the target angle and the current angle of the light-emitting device 110, and converts the difference into an equivalent angle in the range of 0° to 360° by performing a modulo 360 operation. When the equivalent angle is less than 180°, the controller controls the light-emitting device 110 to rotate forward; when the equivalent angle is greater than 180°, the controller controls the light-emitting device 110 to rotate in the reverse direction. Alternatively, the controller 130 calculates the difference between the target angle and the current angle of the light-emitting device 110, and normalizes it to the range of -180° to 180° after performing a modulo 360 operation to obtain an equivalent angle with positive and negative signs. When the equivalent angle is greater than 0, the controller controls the light-emitting device 110 to rotate forward; when the equivalent angle is less than 0, the controller controls the light-emitting device 110 to rotate in the reverse direction. Calculate the difference between the target angle and the current angle, and map it to the 0° to 360° range or the -180° to 180° range through modulo 360 operation. Based on the magnitude or sign of the normalized difference, determine whether to rotate in the positive direction (e.g., clockwise) or the negative direction (e.g., counterclockwise).

[0036] When the controller 130 calculates the difference between the target angle and the current angle of the light-emitting device 110, and converts it to an equivalent angle within the range of 0° to 360° through a modulo 360 operation, the specific control is as follows: For example, if the current angle of the light-emitting device 110 is 10°, and the target angle is 400°, the difference modulo 360 is 40°, which is less than 180°. In this case, the controller 130 controls the light-emitting device 110 to rotate forward by 30° (at this time, the actual angle of the light-emitting device 110 is 40°). If the target angle is 710°, the difference modulo 360 is 340°, which is greater than 180°. In this case, the controller 130 controls the light-emitting device 110 to rotate backward by 20° (at this time, the actual angle of the light-emitting device 110 is -10°).

[0037] When the controller 130 calculates the difference between the target angle and the current angle of the light-emitting device 110, and normalizes it to the range of -180° to 180° after modulo 360 calculation to obtain the equivalent angle with positive and negative signs, the specific control is as follows: For example, if the current angle of the light-emitting device 110 is 10°, and the target angle is 180°, which is 170° after normalization and is greater than 0°, the controller 130 controls the light-emitting device 110 to rotate forward 170° (at this time, the actual angle of the light-emitting device 110 is 180°); if the target angle is 210°, which is -160° after normalization and is less than 0°, the controller 130 controls the light-emitting device 110 to rotate backward 160° (at this time, the actual angle of the light-emitting device 110 is -150°).

[0038] The two judgment logics can be freely chosen as needed.

[0039] In a preferred embodiment of the present invention, the controller 130 is configured to receive lighting control data from an external control device 200 and convert the values ​​of the corresponding channels in the lighting control data into the target angle command according to a stored channel-angle mapping table. Without modifying any existing lighting control program, the luminaire 100 can flexibly adapt to and integrate into a standard lighting control system, achieving the shortest path rotation mode.

[0040] In a preferred embodiment of the present invention, the lighting control data follows the DMX protocol, ART-Net protocol, or sACN protocol. This provides a globally universal standardized language for lighting control, enabling consoles, lighting fixtures, and software from any brand to interconnect and work collaboratively within an open and scalable system.

[0041] In a preferred embodiment of the present invention, when the controller 130 controls the light-emitting device 110 to rotate in an angle-sequential rotation mode, it controls the light-emitting device 110 to rotate forward or backward to the target angle based on whether the difference between the target angle and the current angle of the light-emitting device 110 is positive or negative. In the angle-sequential rotation mode, the angle is the target rather than the position (or orientation). The controller 130 directly calculates the difference between the target angle and the current angle. If the difference is positive, it controls the light-emitting device 110 to rotate forward (e.g., clockwise) by the angle corresponding to the difference; if the difference is negative, it controls the light-emitting device 110 to rotate backward by the angle corresponding to the difference. The change from the current angle to the target angle is continuous, which can achieve special rotation trajectory effects, such as back-and-forth oscillating scanning within a certain angle range.

[0042] For example, if the current angle of the light-emitting device 110 is 10°, and the target angle is 3°, the controller 130 controls the light-emitting device 110 to rotate 7° in the reverse direction (at which point the actual angle of the light-emitting device 110 is 3°). If the target angle is 180°, the controller 130 controls the light-emitting device 110 to rotate 170° in the forward direction (at which point the actual angle of the light-emitting device 110 is 180°). If the target angle is 210°, the controller 130 controls the light-emitting device 110 to rotate 200° in the forward direction (at which point the actual angle of the light-emitting device 110 is 210°).

[0043] In a preferred embodiment of the present invention, the controller 130 manually or automatically switches between the shortest path rotation mode and the angle sequence rotation mode according to user instructions or preset conditions to meet different scenario requirements.

[0044] User commands can be remotely sent to the controller 130 via an external control device 200; preset conditions can be triggered according to different working modes or scenarios of the lamp 100.

[0045] In a preferred embodiment of the present invention, the rotatable angle of the light-emitting device 110 relative to the support base 120 is less than 720°. For the conventional non-stepless rotating light-emitting device 110, in order to prevent its rotation from exceeding a predetermined range and damaging the connection lines, a physical barrier is usually set to limit its maximum rotation angle.

[0046] Physical barriers prevent the rotation of the light-emitting device 110 from being overcome, typically limiting the rotatable angle of the light-emitting device 110 to less than 360 degrees. When the physical barrier is not fixed (it can rotate around the pivot axis and is independent of the light-emitting device 110 and the support base 120), the rotatable angle of the light-emitting device 110 can be limited to less than 720 degrees. This is a common method within the stage lighting fixture 100 and is generally used to limit the rotation of its arm 112 relative to the housing 121 to less than 540 degrees. The position where the light-emitting device 110 is prevented from rotating further by the physical barrier is usually used as the physical reference point for calibration of the light-emitting device 110.

[0047] Optionally, the light-emitting device 110 can rotate infinitely relative to the support base 120, that is, it can rotate at any angle without range limitation. The infinitely rotating light-emitting device 110 and the support base 120 transmit power through a slip ring or electromagnetic induction, and transmit signals through radio waves.

[0048] In a preferred embodiment of the present invention, when the controller 130 controls the light-emitting device 110 to rotate in the shortest path rotation mode, if rotating the light-emitting device 110 directly in the forward direction by less than 180° or in the reverse direction by less than 180° to the final position corresponding to the target angle would exceed its rotatable range, then the controller controls the light-emitting device 110 to rotate in the opposite direction to the final position corresponding to the target angle. This avoids the rotation of the light-emitting device 110 being restricted by the physical obstruction.

[0049] In a preferred embodiment of the present invention, the controller 130 stores a safe area in three-dimensional space. When the controller 130 controls the light-emitting device 110 to rotate in the shortest path rotation mode, if the light-emitting device 110 directly rotates less than 180° in the forward direction or less than 180° in the reverse direction to the final position corresponding to the target angle, and the light-emitting device 110 conflicts with the safe area, then the controller controls the light-emitting device 110 to rotate in the opposite direction to the final position corresponding to the target angle. This prevents the light-emitting device 110 from illuminating the audience area / camera or colliding with the scenery / other lighting fixtures 100.

[0050] In a preferred embodiment of the present invention, an angle detector 113 is further included for detecting the rotation angle of the light-emitting device 110 relative to the support base 120. The position of the light-emitting device 110 is detected in real time to ensure the accuracy of the current angle information of the light-emitting device 110.

[0051] For relative angle sensors, the angle of the light-emitting device 110 is usually obtained by adding / subtracting the degree of rotation based on its physical reference point to obtain its current angle.

[0052] Preferably, the angle detector 113 is mounted on the rotation axis of the light-emitting device 110.

[0053] In a preferred embodiment of the present invention, the angle detector 113 is an absolute angle sensor. Upon power-on or calibration, the controller 130 can immediately obtain the current angle information of the light-emitting device 110 without requiring it to rotate and reset before starting angle calculation. The absolute angle sensor can be a photoelectric encoder, magnetic encoder, capacitive encoder, or inductive encoder.

[0054] In a preferred embodiment of the present invention, upon receiving a calibration command or each time the lamp 100 is powered on, the controller 130 controls the light-emitting device 110 to rotate in the shortest path rotation mode to its physical reference point for position calibration, and records the calibration position. This enables rapid angle calibration, unlike in the prior art where it may require continuous rotation more than one revolution until it is physically blocked before angle calibration can be performed.

[0055] Optionally, the controller 130 can also control the light-emitting device 110 to rotate continuously until it is physically blocked before it is considered to have found a physical reference point. The controller 130 selects the corresponding calibration method according to the user settings.

[0056] In a preferred embodiment of the present invention, the light-emitting device 110 is further provided with an effect disk 1112 that rotates to produce light effects by interfering light beams at different locations. The effect disk 1112 has a rotatable angle greater than 360°, and the controller 130 controls the rotation of the effect disk 1112 in a shortest path rotation mode to optimize the switching speed of the light effect of the lamp 100.

[0057] Optionally, the effect disk 1112 can be a pattern disk 11121 for projecting a specific pattern, a color filter disk 11122 for rendering a beam of light to a specific color, or a CMY disk 11123 for modulating a beam of light to any color. Generally speaking, the pattern filters on the pattern disk 11121 are spaced around the center, the color filters on the color filter disk 11122 are spaced around the center, and the CMY filters on the CMY disk 11123 are filters with a continuous gradient of color around the center.

[0058] In a preferred embodiment of the present invention, the light-emitting device 110 includes a lamp head 111 on which a light source 1111 is mounted and an arm 112 supporting the rotation of the lamp head 111. The support base 120 includes a housing 121 supporting the rotation of the arm 112. Alternatively, the light-emitting device 110 includes a lamp head 111 on which the light source 1111 is mounted, and the support base 120 includes an arm 112 supporting the rotation of the lamp head 111 and a housing 121 supporting the rotation of the arm 112. That is, the light-emitting device 110 may include both the lamp head 111 and the arm 112, or it may include only the lamp head 111. The arm 112 or the lamp head 111 may have a shortest path rotation mode.

[0059] In this application, the light-emitting device 110 includes a lamp head 111 on which a light source 1111 is mounted and an arm 112 that supports the rotation of the lamp head 111. The support base 120 includes a housing 121 that supports the rotation of the arm 112.

[0060] Typically, the pivot axis of the lamp head 111 relative to the arm 112 is perpendicular to the pivot axis of the arm 112 relative to the chassis 121, thereby enabling the light emitted by the lamp head 111 to be projected in any direction.

[0061] like Figure 3 In a preferred embodiment of the present invention, multiple lamps 100 are connected to the same controller 130. When the controller 130 controls the light-emitting device 110 to rotate in the shortest path rotation mode, it controls the light-emitting devices 110 of all lamps 100 to start asynchronously and reach the final position synchronously or sequentially. At this time, the controller 130 is located outside the lamps 100 and is independent of the lamps 100. The controller 130 can plan the start-up time and motion curve of the associated lamps 100, so that although the light-emitting devices 110 start asynchronously (to avoid excessive current during simultaneous start-up), they can reach their respective final positions synchronously or precisely according to a preset timing sequence, so that they arrive at the final position neatly or in a specific order.

[0062] In particular, when the controller 130 controls the rotation of the light-emitting device 110 according to the angle sequence rotation mode, some of the light-emitting devices 110 need to rotate a large angle to reach the final position. When the shortest path rotation mode controls their rotation to reach the final position, it can effectively save time, facilitate coordination with other lamps 100, and avoid delaying for too long.

[0063] like Figures 4 to 5In a preferred embodiment of the present invention, a rotatable external control device 200 is further included. The external control device 200 synchronizes its own rotation angle of less than 360° to the controller 130 and proportionally processes it as the target angle of the light-emitting device 110. The physical reference point used for calibration of the light-emitting device 110 is located within the maximum angle range controlled by the external control device 200. When the controller 130 controls the light-emitting device 110 to rotate in the shortest path rotation mode, if the final position corresponding to the target angle and the current position of the light-emitting device 110 are located on both sides of the physical reference point used for calibration, and the central angle between the final position and the current position is less than 180°, then the light-emitting device 110 crosses the physical reference point used for calibration to reach the final position corresponding to the target angle. When using the shortest path rotation mode to ensure that the external control device 200 controls the rotation of the light-emitting device 110, special consideration is given to the smoothness when crossing physical reference points (such as the 0° position), so that the direction of beam movement is consistent with the operator's intuition and the beam "jumps" (meaning that it does not cross the physical reference point but rotates in the opposite direction to the final position).

[0064] When the lamp 100 includes a lamp head 111 with a light source 1111 installed, an arm 112 supporting the rotation of the lamp head 111, and a housing 121 supporting the rotation of the arm 112, the external control device 200 can also rotate in two directions to control the rotation of the lamp head 111 and the arm 112 respectively.

[0065] The rotation of the external control device 200 can be an integral rotation similar to the structure of the lamp 100 (this structure is adopted in this application), or it can be the rotation of a rocker arm, or it can be the rotation of a knob.

[0066] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A lighting system with a shortest path rotation mode, characterized in that, The system includes a lamp (100) and a controller (130). The lamp (100) includes a light-emitting device (110) for emitting light and a support base (120) for supporting the rotation of the light-emitting device (110). The rotatable angle of the light-emitting device (110) relative to the support base (120) is greater than 360°. The controller (130) receives a target angle command of the light-emitting device (110) relative to the support base (120) and controls the light-emitting device (110) to rotate relative to the support base (120). When the controller (130) controls the light-emitting device (110) to rotate in the shortest path rotation mode, it controls the light-emitting device (110) to rotate directly forward by less than 180° to the final position or reverse by less than 180° to the final position, depending on whether the final position corresponding to the target angle is within the forward 180° rotation range or the reverse 180° rotation range of the current position of the light-emitting device (110).

2. The lighting system with the shortest path rotation mode according to claim 1, characterized in that, The controller (130) calculates the difference between the target angle and the current angle of the light-emitting device (110), and converts the difference into an equivalent angle in the range of 0° to 360° by modulo 360. When the equivalent angle is less than 180°, the controller controls the light-emitting device (110) to rotate forward, and when the equivalent angle is greater than 180°, the controller controls the light-emitting device (110) to rotate in the opposite direction. Alternatively, the controller (130) calculates the difference between the target angle and the current angle of the light-emitting device (110), and normalizes it to the range of -180° to 180° after modulo 360 to obtain an equivalent angle with positive and negative signs. When the equivalent angle is greater than 0, the controller controls the light-emitting device (110) to rotate forward, and when the equivalent angle is less than 0, the controller controls the light-emitting device (110) to rotate in the opposite direction.

3. The lighting system with the shortest path rotation mode according to claim 1, characterized in that, The controller (130) is configured to receive lighting control data from an external control device (200) and convert the value of the corresponding channel in the lighting control data into the target angle command according to a stored channel-angle mapping table.

4. The lighting system with the shortest path rotation mode according to claim 3, characterized in that, The lighting control data follows the DMX protocol, ART-Net protocol, or sACN protocol.

5. The lighting system with the shortest path rotation mode according to claim 1, characterized in that, When the controller (130) controls the light-emitting device (110) to rotate in the angular sequence rotation mode, it controls the light-emitting device (110) to rotate forward or backward to the target angle according to the positive or negative difference between the target angle and the current angle of the light-emitting device (110).

6. The lighting system with the shortest path rotation mode according to claim 5, characterized in that, The controller (130) manually or automatically switches between the shortest path rotation mode and the angle sequence rotation mode according to user instructions or preset conditions.

7. The lighting system with the shortest path rotation mode according to claim 1, characterized in that, The rotatable angle of the light-emitting device (110) relative to the support base (120) is less than 720°.

8. The luminaire system with shortest path rotation mode according to claim 7, characterized in that, When the controller (130) controls the light-emitting device (110) to rotate in the shortest path rotation mode, if the light-emitting device (110) rotates directly forward less than 180° or in the opposite direction less than 180° to the final position corresponding to the target angle, it will exceed its rotatable range. Then, the controller controls the light-emitting device (110) to rotate in the opposite direction to the final position corresponding to the target angle.

9. The luminaire system with shortest path rotation mode according to claim 1, characterized in that, The controller (130) stores a safe area in three-dimensional space. When the controller (130) controls the light-emitting device (110) to rotate in the shortest path rotation mode, if the light-emitting device (110) directly rotates less than 180° in the forward direction or less than 180° in the reverse direction to the final position corresponding to the target angle, the light-emitting device (110) will conflict with the safe area. Then, the controller will control the light-emitting device (110) to rotate in the opposite direction to the final position corresponding to the target angle.

10. The luminaire system with the shortest path rotation mode according to claim 1, characterized in that, It also includes an angle detector (113) for detecting the rotation angle of the light-emitting device (110) relative to the support (120).

11. The luminaire system with shortest path rotation mode according to claim 10, characterized in that, The angle detector (113) is an absolute angle sensor.

12. The luminaire system with the shortest path rotation mode according to claim 11, characterized in that, When the controller (130) receives a calibration command or each time the lamp (100) is powered on, it controls the light-emitting device (110) to rotate in the shortest path rotation mode to its physical reference point for calibration to perform position calibration, and records the calibration position.

13. The luminaire system with the shortest path rotation mode according to claim 1, characterized in that, The light-emitting device (110) is also equipped with an effect disk (1112) that generates light effects by rotating the light beams at different parts. The effect disk (1112) has a rotatable angle of more than 360°. The controller (130) controls the rotation of the effect disk (1112) in the shortest path rotation mode.

14. The luminaire system with the shortest path rotation mode according to claim 1, characterized in that, The light-emitting device (110) includes a lamp head (111) on which a light source (1111) is mounted and an arm (112) supporting the rotation of the lamp head (111). The support base (120) includes a housing (121) supporting the rotation of the arm (112); or the light-emitting device (110) includes a lamp head (111) on which a light source (1111) is mounted and the support base (120) includes an arm (112) supporting the rotation of the lamp head (111) and a housing (121) supporting the rotation of the arm (112).

15. The luminaire system with the shortest path rotation mode according to claim 1, characterized in that, Multiple lamps (100) are connected to the same controller (130). When the controller (130) controls the light-emitting device (110) to rotate in the shortest path rotation mode, the light-emitting devices (110) of all lamps (100) are asynchronously started and synchronously or sequentially reach the final position.

16. The luminaire system with shortest path rotation mode according to claim 1, characterized in that, It also includes a rotatable external control device (200), which synchronizes its own rotation angle of less than 360° to the controller (130) and proportionally processes it as the target angle of the light-emitting device (110). The physical reference point used for calibration of the light-emitting device (110) is located within the maximum angle range controlled by the external control device (200). When the controller (130) controls the light-emitting device (110) to rotate in the shortest path rotation mode, if the final position corresponding to the target angle and the current position of the light-emitting device (110) are located on both sides of the physical reference point used for calibration, and the central angle between the final position and the current position is less than 180°, then the light-emitting device (110) crosses the physical reference point used for calibration to reach the final position corresponding to the target angle.

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