CN105700276B - It is automatically positioned projecting apparatus and automatic positioning method - Google Patents

Abstract

Projecting apparatus and automatic positioning method, including projecting apparatus fuselage, camera lens, camera adjusting mechanism, light sensor and communication module are automatically positioned the invention discloses one kind；The camera lens is arranged in camera adjusting mechanism, and the camera adjusting mechanism is arranged on projecting apparatus fuselage；The camera lens is connected with projecting apparatus fuselage；The light sensor is connected with communication module, and communication module with projecting apparatus fuselage by being wirelessly connected.The present invention can realize the automatic calibration of projector position, without manually adjusting projecting apparatus before each use, be easy to use quick, and be automatically positioned accurate simple.

Description

Automatic positioning projector and automatic positioning method

technical field

The invention relates to a projector, in particular to an automatic positioning projector and an automatic positioning method.

Background technique

Today, with the popularity of projection equipment, projectors have been introduced into all walks of life, such as school classes, company meetings, project defenses, and projectors are required in various occasions. However, the current projectors do not have a self-calibration function. Every time the projector or the screen is moved, it needs to be aligned manually, and the screen often appears skewed, which is cumbersome to use.

Contents of the invention

In view of the existing technical defects, the present invention provides an automatic positioning projector and an automatic positioning method. The projector relies on the photosensitive sensor on the projection screen to automatically correct the position of the projector, so that the picture can be completely and clearly projected onto the projection screen. device.

In order to achieve the above object, the technical scheme adopted in the present invention is as follows: an automatic positioning projector, including a projector body, a lens, a lens adjustment mechanism, a photosensitive sensor and a communication module; the lens is installed on the lens adjustment mechanism, and the The lens adjustment mechanism is installed on the projector body; the lens is connected with the projector body; the photosensitive sensor is connected with the communication module, and the communication module is connected with the projector body through wireless.

Further said lens adjustment mechanism includes a horizontal movement mechanism, a forward and backward movement mechanism, a vertical movement mechanism and a lens holder; said horizontal movement mechanism includes a horizontal movement guide rail and a first micro motor, and the first micro motor is installed inside the projector body The horizontal moving guide rail is installed on the front end of the projector fuselage, and is connected with the first micro-motor through a rack and pinion to realize horizontal movement; the front and rear moving mechanism includes a front-rear movement guide rail and a second micro-motor; the second micro-motor is installed on Inside the fuselage, the front and rear moving guide rails are installed on the horizontal moving guide rails, and are connected with the second micro motor through a rack and pinion to realize forward and backward movement; the vertical moving mechanism includes a lens bracket and a miniature steering gear, and the miniature steering gear Installed on the front and rear moving guide rails; the lens bracket is installed on the steering wheel of the miniature steering gear, and can follow the rotation of the miniature steering gear; the lens is installed on the lens bracket; the first micro motor, the miniature steering gear and the second The tiny motors are all connected with the projector body.

Further, the projector projector body includes an optical structure module, a heat dissipation module, a main control circuit module, a motor control module and a wireless communication module; wherein, the optical structure module, the heat dissipation module, the motor control module and the wireless communication module Both are connected with the main control circuit module; the main control circuit module controls the image output and adjusts the motor control signal according to the wireless communication information; the optical structure module is connected with the lens, and converts the electronic signal of the main control circuit module into an optical signal through the lens projected onto the projection screen; the heat dissipation module is used for heat dissipation of the body; the wireless communication module is connected to the communication module for communication between the projection screen and the projector; the motor control module is respectively connected to the first micro motor, the micro The steering gear is connected with the second micro-motor, and the movement of the motor is controlled according to the signal of the main control circuit module.

An automatic positioning method utilizing the above-mentioned projector, specifically comprising the following steps:

(1) Install four photosensitive sensors at the four corners of the projection screen, and fix the projector at a position close to the focal length in front of the center of the projection screen;

(2) Start the projector, the lens first emits four white lights pointing to the four apexes of the rectangle, if the photosensitive sensor does not receive the white light, the motor control module controls the first micro motor of the horizontal movement mechanism and the micro steering gear of the vertical movement mechanism Rotate to scan the whole field, the specific method is as follows:

(2.1) First move the lens to the bottom left, and then the vertical movement mechanism moves the lens up to the top;

(2.2) Use the horizontal moving mechanism to move to the right for a certain length, and then move the lens to the bottom with the vertical moving mechanism;

(2.3) Repeat step (2.1) and step (2.2) until a photosensitive sensor receives white light or the horizontal movement mechanism reaches the far right;

(2.4) If the horizontal moving mechanism reaches the far right and still does not receive white light, use the forward and backward moving device to move the lens forward for a certain distance, and repeat steps (2.1) and (2.2) again;

(2.5) When a photosensitive sensor receives white light;

(2.5.1) Adjust the forward and backward moving device to move the lens backward. When the photosensitive sensor that originally received white light cannot receive it again, stop adjusting the forward and backward moving device;

(2.5.2) Use the horizontal moving device and the vertical moving device to make small adjustments to the lens in the horizontal and vertical directions until white light is received again;

(2.6) Then repeat step (2.5.1) and step (2.5.2) until two photosensitive sensors receive white light;

(3) After two photosensitive sensors receive white light, the position of the rectangle has been completely determined under the condition that the aspect ratio remains unchanged, that is, the position of the lens has been adjusted. At this time, adjust the focal length of the lens, and the light spots on the projector will be corresponding When it becomes larger or smaller, the focal length can be judged according to the light intensity received by the photosensitive sensor; when the light intensity received by the photosensitive sensor reaches the maximum, it means that the focal length adjustment is completed, and the projector has completed the automatic positioning and focusing work.

Compared with the background technology, the present invention has the beneficial effects that: the automatic calibration of the position of the projector can be realized without manual adjustment of the projector before each use, and the use is convenient and fast, and the automatic positioning is accurate and simple.

Description of drawings

Fig. 1 is the front view of projector of the present invention;

Fig. 2 is a side view of the projector of the present invention;

Fig. 3 is the top view of projector of the present invention;

Fig. 4 is the plan view of projection screen of the present invention;

Among them: projector body 1, horizontal moving mechanism 2, vertical moving mechanism 3, lens 4, first micro motor 5, forward and backward moving mechanism 6, curtain 7, photosensitive sensor 8, communication module 9, micro steering gear 10, the first Two micro motors 11.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

As shown in Figures 1-3, the present invention includes a projector body 1, a lens 4, a lens adjustment mechanism, a photosensitive sensor 8 and a communication module 9; the lens is installed on the lens adjustment mechanism, and the lens adjustment mechanism is installed on the projector The lens is connected to the projector body 1; the photosensitive sensor 8 is connected to the communication module 9, and the communication module 9 is connected to the projector body 1 through wireless.

Described lens adjustment mechanism comprises horizontal movement mechanism 2, vertical movement mechanism 3, back and forth movement mechanism 6 and lens holder; Described horizontal movement mechanism 2 comprises horizontal movement guide rail and first micromotor 5, and first micromotor 5 is installed on projection The inside of the projector body 1; the horizontal moving guide rail is installed on the front end of the projector body 1, and is connected with the first micro motor 5 through a rack and pinion to realize horizontal movement; the front and rear moving mechanism 6 includes a front and rear moving guide rail and a second micro motor 11 The second micro-motor 11 is installed inside the fuselage, and the front and rear moving guide rail is installed on the horizontal moving guide rail, and is connected with the second micro-motor 11 by a rack and pinion to realize forward and backward movement; the vertical movement mechanism 3 includes Lens bracket and miniature steering gear 10, described miniature steering gear 10 is installed on the guide rail moving forward and backward; Described lens bracket is installed on the steering wheel of miniature steering gear 10, can follow miniature steering gear 10 to rotate; Described camera lens 4 is installed on On the lens bracket; the first micro motor 5 , the micro steering gear 10 and the second micro motor 11 are all connected to the projector body 1 .

The projector projector body 1 includes an optical structure module, a heat dissipation module, a main control circuit module, a motor control module and a wireless communication module; wherein, the optical structure module, the heat dissipation module, the motor control module and the wireless communication module are all connected to each other The main control circuit module is connected; the main control circuit module controls the image output and adjusts the motor control signal according to the wireless communication information, and can adopt TQFP100 produced by Texas Instruments, but is not limited to this; the optical structure module is connected with the lens 4, and the main The electronic signal of the control circuit module is converted into an optical signal and projected onto the projection screen through the lens 4. The 1910-6103W module produced by Texas Instruments can be selected, but not limited to this; the heat dissipation module is used for body heat dissipation and can be produced by Taiwan Xiexi. AD0612HX-H93 cooling fan, but not limited thereto; the wireless communication module is connected with the communication module 9 for communication between the projection screen and the projector, and can adopt the NRF24L01 chip produced by Risym Company, but not limited thereto The motor control module is respectively connected with the first micro motor 5, the micro steering gear 10 and the second micro motor 11, and controls the motor movement according to the signal of the main control circuit module, and can adopt the STMicroelectronics L298N control chip, but is not limited to this.

As shown in Figure 4, four photosensitive sensors 8 are respectively installed at the four corners of the projection screen 7, and a communication module 9 is installed on the top, the communication module 9 is input by the photosensitive sensors 8, and the output is wirelessly sent to the projector body 1 In the wireless communication module; the communication module 9 can adopt the NRF24L01 type chip produced by Risym Company, but is not limited thereto.

Working process of the present invention is as follows:

(1) Four photosensitive sensors 8 are installed at the four corners of the projection screen 7, and the projector is fixed at a position close to the focal length in front of the projection screen center;

(2) Start the projector, lens 4 at first sends four white lights pointing to the four apexes of the rectangle, if the photosensitive sensor 8 does not receive the white light, then the motor control module controls the first micro-motor 5 of the horizontal movement mechanism 2 and the vertical movement mechanism The miniature steering gear 10 of 3 rotates and scans the whole field, and the specific method is as follows:

(2.1) First move the lens 4 to the bottom left, and then the vertical movement mechanism 3 moves the lens 4 upward to the top;

(2.2) Use the horizontal moving mechanism 2 to move to the right for a certain length and then move the lens 4 to the bottom with the vertical moving mechanism 3;

(2.3) Repeat step (2.1) and step (2.2) until a photosensitive sensor 8 receives white light or the horizontal movement mechanism reaches the far right;

(2.4) If the horizontal moving mechanism 2 reaches the far right and still does not receive white light, then use the front and rear moving device 6 to move the lens 4 forward for a certain distance, and repeat steps (2.1) and (2.2) again;

(2.5) After a photosensitive sensor 8 receives white light;

(2.5.1) Adjust the forward and backward moving device 6 to move the camera lens 4 backward. When the photosensitive sensor 8 that originally received white light cannot receive it again, stop adjusting the front and rear moving device 6;

(2.5.2) Utilize the horizontal moving device 2 and the vertical moving device 3 to make the lens 4 adjust slightly in the horizontal and vertical directions until white light is received again;

(2.6) Then repeat steps (2.5.1) and steps (2.5.2) until two photosensitive sensors 8 receive white light;

(3) After the two photosensitive sensors 8 receive white light, under the condition that the aspect ratio remains unchanged, the position of the rectangle has been completely determined, that is, the position of the lens 4 has been adjusted. At this time, the focal length of the lens 4 is adjusted, and The light spot will become larger or smaller accordingly, and the focal length can be judged according to the light intensity received by the photosensitive sensor 8; when the light intensity received by the photosensitive sensor 8 reaches the maximum, it means that the focal length adjustment is completed, and the projector has completed automatic positioning and focusing Work, ready to use.

Claims (1)

1. an automatic positioning and focusing method of an automatic positioning projector, the automatic positioning projector comprises a projector body, a lens, a lens adjustment mechanism, a photosensitive sensor and a communication module; the lens is installed on the lens adjustment mechanism, The lens adjustment mechanism is installed on the projector body; the lens is connected to the projector body; the photosensitive sensor is connected to the communication module, and the communication module is connected to the projector body wirelessly; The lens adjustment mechanism includes a horizontal moving device, a forward and backward moving device, a vertical moving device and a lens holder; the horizontal moving device includes a horizontal moving guide rail and a first micro motor, and the first micro motor is installed inside the projector body; The moving guide rail is installed on the front end of the projector fuselage, and is connected with the first micro-motor through a rack and pinion to realize the horizontal movement of the horizontally moving guide rail; the front and rear moving device includes a front-rear movement guide rail and a second micro-motor; the second micro-motor Installed inside the projector body, the front and rear moving guide rails are installed on the horizontal moving guide rails, and are connected with the second micro motor through the rack and pinion to realize the forward and backward movement of the front and rear moving guide rails; the vertical moving device includes a lens bracket and a miniature The steering gear, the miniature steering gear is installed on the front and rear moving guide rail; the lens bracket is installed on the steering wheel of the miniature steering gear, and can follow the rotation of the miniature steering gear; the lens is installed on the lens bracket; the first miniature The motor, the miniature steering gear and the second miniature motor are all connected with the projector body; The projector body includes an optical structure module, a heat dissipation module, a main control circuit module, a motor control module and a wireless communication module; wherein, the optical structure module, the heat dissipation module, the motor control module and the wireless communication module are all connected to the main control circuit The modules are connected; the main control circuit module controls the image output and adjusts the motor control signal according to the wireless communication information; the optical structure module is connected with the lens, and the electronic signal of the main control circuit module is converted into an optical signal and projected onto the projection screen through the lens The heat dissipation module is used for the heat dissipation of the projector body; the wireless communication module is connected with the communication module for communication between the projection screen and the projector; the motor control module is connected with the first micro motor and the micro rudder respectively The motor and the second micro motor are connected, and the movement of the motor is controlled according to the motor control signal of the main control circuit module; It is characterized in that it specifically includes the following steps: (1) Install a photosensitive sensor at each of the four corners of the projection screen, and fix the projector at a position close to the focal length in front of the center of the projection screen; (2) Start the projector, the lens first emits four white lights to point to the projection screen, and each white light points to a corner of the projection screen, if the photosensitive sensor does not receive the white light, the motor control module controls the first micro motor of the horizontal moving device and the vertical The micro steering gear of the mobile device rotates to scan the whole field. The specific method is as follows: (2.1) First move the lens to the bottom left, then use the vertical moving device to move the lens up to the top; (2.2) After the horizontal moving device moves to the right for a certain length, then use the vertical moving device to move the lens to the bottom; (2.3) After the horizontal moving device moves to the right for a certain length, then use the vertical moving device to move the lens to the top; (2.4) Repeat steps (2.2) and (2.3) until a photosensitive sensor receives white light or the horizontal moving device reaches the far right; (2.5) If the horizontal moving device reaches the far right and still does not receive white light, use the forward and backward moving device to move the lens forward for a certain distance, and repeat steps (2.1) and (2.3) again; (2.6) When a photosensitive sensor receives white light; (2.6.1) Adjust the front and rear moving devices to move the lens backward. When the photosensitive sensor that originally received white light cannot receive white light again, stop adjusting the front and rear moving devices; (2.6.2) Use the horizontal moving device and the vertical moving device to adjust the lens slightly in the horizontal and vertical directions until the photosensitive sensor that originally received white light receives white light again; (2.7) Then repeat step (2.6.1) and step (2.6.2) until two photosensitive sensors receive white light; (3) After two photosensitive sensors receive white light, the position of the rectangle has been completely determined under the condition that the aspect ratio remains unchanged, that is, the position of the lens has been adjusted. At this time, adjust the focal length of the lens, and the light spots on the projector will be corresponding When it becomes larger or smaller, the focal length can be judged according to the light intensity received by the photosensitive sensor; when the light intensity received by the photosensitive sensor reaches the maximum, it means that the focal length adjustment is completed, and the projector has completed the automatic positioning and focusing work.