CN208015847U - A kind of novel load-carrying monopod video camera - Google Patents

Abstract

A kind of novel load-carrying monopod video camera, including holder mounting base, holder and video camera；Holder includes upper frame and horizontal rotating disc, and left and right executing agency and upper and lower executing agency are equipped in holder；Left and right executing agency includes vertical fixing axle, and first motor driving horizontal rotating disc rotates in the horizontal direction using fixing axle as axis；Upper and lower executing agency includes horizontal being rotated up and down main shaft and the second motor；The driving of second motor is rotated up and down main shaft rotation；It further include link；Further include two rotary encoders, one is to rotate left and right encoder, and another one is to be rotated up and down encoder；The former main body is relatively fixed with horizontal rotating disc, and synchronous pulley is sequentially connected with fixing axle；The main body of the latter is relatively fixed with link, and synchronous pulley is connect with spindle drive is rotated up and down.The shield of video camera is internally provided with CCD camera assembly；The front end of shield is equipped with electrically heated optical glass；Optical glass surface is pasted with resistance plated film, and both sides are electrically connected first electrode and second electrode.

Description

A new type of heavy-duty PTZ camera

technical field

The utility model relates to a pan-tilt camera, in particular to a novel heavy-duty pan-tilt camera.

Background technique

At present, the traditional heavy-duty pan-tilt camera realizes the rotation of the camera on the X-axis (horizontal direction) and the Y-axis (vertical direction) by controlling the stepping motors installed on the X-axis and Y-axis. Due to the lack of monitoring and feedback on the rotation state of the stepping motor, when the controller sends instructions to the stepping motor, the controller cannot judge whether the stepping motor rotates to a predetermined position as required. Due to structural defects and dimensional errors, the stepping motor may not turn to the predetermined position as required or there is a deviation in the rotation, so that the motor loses step and accumulates errors. As the working time continues, the rotation deviation of the stepping motor is getting bigger and bigger. In order to reduce the rotation deviation of the stepping motor, the industry will take technical treatment, that is, every time a fixed time is set, the controller will control The pan-tilt camera returns to the X-axis origin and the Y-axis origin, and the working state of the stepping motor is corrected, which seriously affects the working efficiency of the pan-tilt camera. Due to the above problems, traditional heavy-duty PTZ cameras cannot achieve high-precision steering control and fast control response.

In addition, in order to work outdoors, the traditional heavy-duty PTZ camera needs to install the camera and other components in a sealed shield, and do IP66 protection for the shield to avoid water ingress when used outdoors. Existing pan-tilt cameras usually have an optical glass respectively installed in front of the camera and the laser. After the camera is used for a long time, the airtightness of the shield gradually deteriorates, and a part of outdoor moisture will inevitably enter the working area of the camera. In bad weather or in a humid environment, as the internal camera and other components emit heat during operation, the temperature difference between the internal and external natural environment gradually increases. Therefore, the water vapor in the protective cover will gather on the optical lens, affecting The focus of the camera, resulting in blurred images, makes the device unusable. In order to solve this problem, we must first understand the principles of moisture and fog production, which involves the fields of optics, materials and thermal physics. According to comprehensive analysis, the reasons for the above problems include: 1. There are air flow dead zones and low temperature zones in the shield; 2. The ambient humidity is high; 3. The camera has poor air permeability, and the air cannot be convected and exchanged. Since the heavy-duty PTZ camera is required to work outdoors and to rotate in all directions, the passport of the camera must have higher waterproof requirements, so it is impossible to open vents to increase air convection and exchange, otherwise rainwater will enter The camera causes damage to the equipment.

Therefore, how to solve the above-mentioned deficiencies in the prior art has become a subject to be studied and solved by the present invention.

Contents of the invention

The purpose of the utility model is to provide a novel heavy-duty pan-tilt camera.

For achieving the above object, the technical scheme that the utility model adopts is:

A new type of heavy-duty pan-tilt camera, comprising a pan-tilt mounting base, a pan-tilt, and a camera; the pan-tilt is rotatably connected above the pan-tilt mounting base, and rotates horizontally; the camera is rotatably connected to the cloud Above the platform, rotate up and down; among them,

The cloud platform includes an upper frame body and a horizontal turntable, the upper frame body is fixedly connected with respect to the shield of the camera, and the horizontal turntable rotates horizontally relative to the platform mounting seat;

The cloud platform is provided with left and right actuators and up and down actuators;

The left and right actuators include a vertical fixed shaft, which is fixed relative to the pan-tilt mount; it also includes a first motor and a left and right worm mechanism, and the first motor is fixed on the horizontal On the turntable, the worm gears of the left and right worm gear mechanisms are formed on the outer peripheral surface of the fixed shaft, and the worm gears are connected to the output shaft of the first motor; when the first motor is working, the reaction force of the left and right worm gear mechanisms , the first motor drives the horizontal turntable to rotate in the horizontal direction around the fixed shaft;

The up and down actuator includes a vertical rotation main shaft and a second motor for driving the up and down rotation main shaft; the up and down rotation main shaft is relatively fixed to the upper frame, and is used to drive the camera to rotate up and down; the The second motor is fixed on the horizontal turntable; when the second motor is working, the second motor drives the up and down rotating main shaft to rotate, and then drives the upper frame to swing in the up and down direction;

It also includes a connecting frame, the connecting frame is vertically arranged on the horizontal turntable, and the up and down rotating main shaft is rotated and arranged on the upper end of the connecting frame along the horizontal direction;

Among them, two rotary encoders are also included, one is a left and right rotary encoder, and the other is an up and down rotary encoder; each of the rotary encoders includes a main body, a rotating shaft and a synchronous pulley, and the rotating shaft is arranged on the In the main body, the synchronous pulley is coaxially fixed on the rotating shaft;

The main body of the left and right rotary encoders is relatively fixed to the horizontal turntable, and the timing belt pulley of the left and right rotary encoders is connected to the fixed shaft through transmission;

The main body of the up and down rotary encoder is relatively fixed to the connecting frame, and the synchronous belt pulley of the up and down rotary encoder is connected to the up and down rotary main shaft by transmission;

The camera includes a shield with a camera assembly inside; the front end of the shield is provided with electrically heated optical glass corresponding to the camera assembly; the surface of the optical glass is attached with a transparent resistance coating, and the two sides of the optical glass A first electrode and a second electrode are provided on the side respectively, and the first electrode and the second electrode are both electrically connected to the resistive coating.

The relevant content in the above-mentioned technical scheme is explained as follows:

1. In the above scheme, when the mechanism moves, when the pan-tilt part rotates horizontally left and right, the pan-tilt will rotate the camera part left and right, and the rotation angle is 360 degrees; at the same time, it can also control the camera part to perform vertical movement in the up and down direction. Rotation, the rotation angle is at least 120 degrees; through the coordinated rotation in the horizontal direction and the up and down direction, the camera can shoot the surrounding and up and down conditions of the scene.

2. In the above solution, the up and down actuator further includes an up and down worm gear mechanism, the worm wheel of the up and down worm gear mechanism is formed on the outer peripheral surface of the up and down rotating main shaft, and the worm gear is connected to the output shaft of the second motor through transmission.

3. In the above solution, it also includes a controller, which can be arranged in the cloud platform, and the controller has a plurality of control signal input and output terminals, which are respectively electrically connected to the first motor, the second motor and the two rotary encoders, Construct a servo control system.

4. In the above solution, the feature that the encoder can detect the absolute position of the mechanical position is used, and since each position it can read is unique, it can accurately sense the real-time displacement of the component. Through the real-time monitoring of the rotation of the parts, the value is read to the controller for real-time data judgment and processing.

5. In the above scheme, the rotation of each motor drives the rotation of the corresponding components (horizontal turntable and up and down rotating spindle), and the rotation of each component drives the rotation shaft of the corresponding rotary encoder through the transmission belt. After the rotation is completed, each of the rotary encoders sends the fixed code value corresponding to the rotation position of each component to the controller, and the controller sends the code value of the rotation position to the rotation step of each of the motors. Convert and compare the input parameters; if the two parameter values correspond correctly, it means that the motor is rotating accurately according to the control requirements; if the two parameter values can not correspond correctly, it means that the motor has control out-of-step or rotation deviation. At this time, the controller will continue to control the motor according to the magnitude of the deviation until it rotates to a required position, so as to realize the control compensation function. With this design, the accuracy of pan-tilt camera rotation control can be significantly improved.

6. In the above scheme, both motors are stepping motors.

7. In the above scheme, "both sides of the optical glass are respectively provided with a first electrode and a second electrode, and the first electrode and the second electrode are both electrically connected to the resistance coating". The glass is heated to avoid condensation of moisture on the optical glass.

8. In the above solution, a dehumidifier is further provided in the shield, and the dehumidifier includes an electro-dehumidification body, and a third electrode and a fourth electrode electrically connected to the electro-dehumidification body. By applying direct current to the two electrodes, the electro-dehumidification body is dehumidified and dried to reduce the humidity in the shield.

9. In the above solution, the electro-dehumidification body includes a solid polymer electrolyte membrane, but is not limited to this material, and other electro-dehumidification materials that can be used by those skilled in the art can also be used.

10. In the above solution, a zoom laser is also included, and the zoom laser is fixed inside the shield and arranged side by side with the camera assembly. This design ensures that the field of view of the camera assembly is the same as the beam angle of the zoom laser, and the zoom laser is used in conjunction with the camera assembly as an infrared low-light environment or night-time supplementary lighting, so that the camera effect is better.

11. In the above solution, the front end of the shield is also provided with electrically heated optical glass corresponding to the zoom laser.

Working principle and advantages of the present utility model are as follows:

The utility model utilizes the feature that the encoder can detect the absolute value position of the mechanical position, and because each position it can read is unique, it can accurately sense the real-time displacement of the components. Through the real-time monitoring of the rotation of the parts, the value is read to the controller for real-time data judgment and processing. Compared with the prior art, the utility model does not need to reset and correct the motor, but can monitor the working state of the motor in real time, accurately control and compensate with high precision, and can work stably for a long time. It solves the problem that the traditional heavy-duty pan-tilt camera needs to reset and correct the stepping motor, which affects the work efficiency.

At the same time, the utility model adds electrically heated optical glass on the protective cover of the camera to avoid condensation fog on the optical glass. Even if the fog is generated, it can be evaporated by heating to keep the glass mirror bright as before. In addition, by setting up a dehumidifier for electrolytic dehumidification, the inside of the shield is kept dry, and the mist is dispelled so that it has no chance to form. Under the dual effects of electrolytic dehumidification and drying and glass heating, the utility model can effectively keep the optical glass bright and avoid its occurrence of fogging, and at the same time, the inside of the protective cover can be kept dry, avoiding the generation of fog from the source.

Description of drawings

Accompanying drawing 1 is the structural representation of the utility model embodiment;

Accompanying drawing 2 is a schematic diagram of the internal structure of the cloud platform of the utility model embodiment;

Accompanying drawing 3 is the structural representation of the left and right actuators of the utility model embodiment;

Accompanying drawing 4 is the structural representation of the upper and lower actuators of the utility model embodiment;

Accompanying drawing 5 is the structure diagram of the rotary encoder of the utility model embodiment;

Accompanying drawing 6 is the schematic diagram after opening of the camera shield of the embodiment of the utility model;

Accompanying drawing 7 is the structure diagram of electric heating optical glass of the embodiment of the utility model;

Accompanying drawing 8 is the structure diagram of the dehumidifier of the embodiment of the utility model.

In the attached drawings above: 1. PTZ mount; 2. 3. Cloud platform; Camera; 4. 5. Upper shelf body; Horizontal turntable; 6. Shield; 7. Fixed shaft; 8. 9. The first motor; 10. The worm wheel of the left and right worm gear mechanism; 10. Worms of left and right worm gear mechanisms; 12. Rotate the main shaft up and down; 12. Second motor; 13. The worm wheel of the upper and lower worm gear mechanism; 15. The worm of the upper and lower worm gear mechanism; Drive belt; 16. Connecting frame; 17. Rotate the encoder left and right; 18. Rotate the encoder up and down; 19. subject; 20. Rotation axis; 21. Synchronous pulley; 22. Output data line; 23. Camera assembly; 24. 25. Electrically heated optical glass; Resistance coating; 26. 26. the first electrode; 28. second electrode; Dehumidifier; 29. Electrodehumidification body; 30. 31. the third electrode; 32. the fourth electrode; Zoom laser.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is further described:

Embodiment: Referring to accompanying drawings 1 to 8, a new type of heavy-duty pan-tilt camera includes a pan-tilt mounting base 1, a pan-tilt 2, and a camera 3; the pan-tilt 2 is rotatably connected to the pan-tilt mounting base 1 The top of the platform is used to rotate horizontally; the camera 3 is connected to the top of the platform 2 to rotate up and down; when the platform 2 rotates horizontally to the left and right, the platform 2 will carry the camera 3 Rotate left and right, and the rotation angle is 360 degrees; at the same time, the camera 3 can also be controlled to rotate vertically in the up and down direction, and the rotation angle is at least 120 degrees; through the coordinated rotation in the horizontal direction and the up and down direction, the camera 3 can shoot around the scene and Up and down the situation.

Wherein, the cloud platform 2 includes an upper frame body 4 and a horizontal turntable 5, the upper frame body 4 is fixedly connected to the shield 6 of the camera 4, and the horizontal turntable 5 rotates horizontally relative to the platform mounting seat 1;

The cloud platform 2 is provided with left and right actuators and up and down actuators;

The left and right actuators include a vertically arranged fixed shaft 7, which is fixed relative to the pan-tilt mount 1; it also includes a first motor 8 and a left and right worm mechanism, and the first motor 8 is fixed Set on the horizontal turntable 5, the worm wheel 9 of the left and right worm gear mechanisms is formed on the outer peripheral surface of the fixed shaft 7, and the worm 10 is connected to the output shaft of the first motor 8; When working, the first motor 8 drives the horizontal turntable 5 to rotate in the horizontal direction around the fixed shaft 7 through the reaction force of the left and right worm gear mechanisms.

The up-and-down actuator includes an up-and-down rotating main shaft 11, and a second motor 12 for driving the up-and-down rotating main shaft 11 to rotate; the up-and-down rotating main shaft 11 is relatively fixed to the upper frame 4, and is used to drive the camera 3 to perform Rotate in the up and down direction; the second motor 12 is fixed on the horizontal turntable 5; when the second motor 12 is working, the second motor 12 drives the up and down rotating main shaft 11 to rotate, and then drives the upper frame 4 in the Swing in the up and down direction; the up and down executive mechanism also includes an up and down worm gear mechanism, the worm gear 13 of the up and down worm gear mechanism is formed on the outer peripheral surface of the up and down rotating main shaft 11, and the output shaft of the worm 14 and the second motor 12 is passed through the transmission Belt 15 drive connections.

It also includes a connecting frame 16 , which is vertically arranged on the horizontal turntable 5 , and the up-and-down rotating main shaft 11 is arranged on the upper end of the connecting frame 16 rotatably in the horizontal direction.

Wherein, also comprise two rotary encoders, one is left and right rotary encoder 17, and the other is up and down rotary encoder 18; Each described rotary encoder all comprises main body 19, rotating shaft 20 and synchronous pulley 21, and described The rotating shaft 20 is rotatably arranged in the main body 19, and the synchronous pulley 21 is coaxially fixed on the rotating shaft 20;

The main body of the left and right rotary encoders 17 is relatively fixed to the horizontal turntable 5, and the timing pulley of the left and right rotary encoders 17 is connected to the fixed shaft 7 through a transmission belt 15;

The main body of the vertical rotary encoder 18 is relatively fixed to the connecting frame 16 , and the synchronous pulley of the vertical rotary encoder 18 is connected to the vertical rotary main shaft 11 through a transmission belt 15 .

Among them, a controller (not shown in the drawing) is also included, which can be set in the cloud platform 2. The controller has a plurality of control signal input and output terminals, which are electrically connected to the first motor 8 and the second motor 12 respectively. And the output data lines 22 of the two rotary encoders 17, 18 to construct a servo control system.

The rotation of each of the motors 8 and 12 drives the rotation of the corresponding components (horizontal turntable 5 and up and down rotating main shaft 11 ), and the rotation of each component drives the rotation shaft of the corresponding rotary encoder through the transmission belt 15 . After the rotation is completed, each of the rotary encoders 17, 18 sends the fixed coded value of the corresponding rotational position of each component to the controller, and the controller sends the coded value of the rotational position to each of the motors. Convert and compare the rotation step parameters of 8 and 12; if the two parameter values correspond correctly, it means that the motors 8 and 12 have rotated accurately according to the control requirements; if the two parameter values can not correspond correctly, it means that the motors 8 and 12 exist Control out of step or rotational deviation. At this time, the controller will continue to control the motors 8 and 12 according to the size of the deviation until they rotate to the required position, so as to realize the control compensation function. With this design, the accuracy of pan-tilt camera rotation control can be significantly improved.

Wherein, the shield 6 of the camera 3 is provided with a camera assembly 23; the front end of the shield 4 corresponds to the camera assembly 23 and is provided with electrically heated optical glass 24; the surface of the optical glass 24 is attached with a transparent resistor Both sides of the coating 25 and the optical glass 24 are respectively provided with a first electrode 26 and a second electrode 27 , and the first electrode 26 and the second electrode 27 are both electrically connected to the resistance coating 25 . After electrification, the resistive coating 25 will generate heat, thereby heating the optical glass 24 to prevent water vapor from condensing on the optical glass 24 .

A dehumidifier 28 is also provided inside the shield 4 , and the dehumidifier 28 includes an electro-dehumidification body 29 , and a third electrode 30 and a fourth electrode 31 electrically connected to the electro-dehumidification body 29 . By applying direct current to the two electrodes 12, 13, the electro-dehumidification main body 29 is dehumidified and dried, and the humidity in the shield 4 is reduced. The electro-dehumidification body 29 includes a solid polymer electrolyte membrane, but is not limited to this material, and other electro-dehumidification materials that can be used by those skilled in the art can also be used.

Wherein, a zoom laser 32 is also included, and the zoom laser 32 is fixed inside the shield 4 and arranged side by side with the camera assembly 23 . With this design, to ensure that the viewing angle of the camera assembly 23 is the same as the beam angle of the zoom laser 32, the zoom laser 32 cooperates with the camera assembly 23 to be used as an infrared low-light environment or a supplementary light at night, so that the camera effect is better. The front end of the shield 4 is also provided with an electrically heated optical glass 24 corresponding to the zoom laser 32 to ensure the optical quality of the zoom laser 32 .

The above-mentioned embodiments are only to illustrate the technical concept and characteristics of the present utility model, and its purpose is to enable those familiar with this technology to understand the content of the present utility model and implement it accordingly, and not to limit the protection scope of the present utility model. All equivalent changes or modifications made according to the spirit of the utility model shall fall within the protection scope of the utility model.

Claims (7)

1. A novel heavy-duty PTZ camera, characterized in that: It includes a pan-tilt mounting base, a pan-tilt, and a camera; the pan-tilt is rotatably connected above the pan-tilt mounting base to rotate horizontally; the camera is rotatably connected to the top of the pan-tilt to rotate up and down; in, The cloud platform includes an upper frame body and a horizontal turntable, the upper frame body is fixedly connected with respect to the shield of the camera, and the horizontal turntable rotates horizontally relative to the platform mounting seat; The cloud platform is provided with left and right actuators and up and down actuators; The left and right actuators include a vertical fixed shaft, which is fixed relative to the pan-tilt mount; it also includes a first motor and a left and right worm mechanism, and the first motor is fixed on the horizontal On the turntable, the worm gears of the left and right worm gear mechanisms are formed on the outer peripheral surface of the fixed shaft, and the worm gears are connected to the output shaft of the first motor; when the first motor is working, the reaction force of the left and right worm gear mechanisms , the first motor drives the horizontal turntable to rotate in the horizontal direction around the fixed shaft; The up and down actuator includes a vertical rotation main shaft and a second motor for driving the up and down rotation main shaft; the up and down rotation main shaft is relatively fixed to the upper frame, and is used to drive the camera to rotate up and down; the The second motor is fixed on the horizontal turntable; when the second motor is working, the second motor drives the up and down rotating main shaft to rotate, and then drives the upper frame to swing in the up and down direction; It also includes a connecting frame, the connecting frame is vertically arranged on the horizontal turntable, and the up and down rotating main shaft is rotated and arranged on the upper end of the connecting frame along the horizontal direction; Among them, two rotary encoders are also included, one is a left and right rotary encoder, and the other is an up and down rotary encoder; each of the rotary encoders includes a main body, a rotating shaft and a synchronous pulley, and the rotating shaft is arranged on the In the main body, the synchronous pulley is coaxially fixed on the rotating shaft; The main body of the left and right rotary encoders is relatively fixed to the horizontal turntable, and the timing belt pulley of the left and right rotary encoders is connected to the fixed shaft through transmission; The main body of the up and down rotary encoder is relatively fixed to the connecting frame, and the synchronous belt pulley of the up and down rotary encoder is connected to the up and down rotary main shaft by transmission; The camera includes a shield with a camera assembly inside; the front end of the shield is provided with electrically heated optical glass corresponding to the camera assembly; the surface of the optical glass is attached with a transparent resistance coating, and the two sides of the optical glass A first electrode and a second electrode are provided on the side respectively, and the first electrode and the second electrode are both electrically connected to the resistive coating. 2. PTZ camera according to claim 1, is characterized in that: described up and down executive mechanism also comprises a worm gear mechanism up and down, and the worm gear of up and down worm gear mechanism is formed on the outer peripheral surface of described up and down rotating main shaft, and worm and described The transmission connection of the output shaft of the second motor. 3. PTZ camera according to claim 1, it is characterized in that: also comprise a controller, this controller has a plurality of control signal input and output ends, is electrically connected respectively described first motor, described second motor and The two rotary encoders construct a servo control system. 4. The pan-tilt camera according to claim 1, characterized in that: a dehumidifier is also provided in the shield, and the dehumidifier includes an electro-dehumidification body, and a third electrode and a third electrode electrically connected to the electro-dehumidification body. fourth electrode. 5. The pan-tilt camera according to claim 4, characterized in that: the electrolytic dehumidification body comprises a solid polymer electrolyte membrane. 6 . The pan-tilt camera according to claim 1 , further comprising a zoom laser, the zoom laser is fixed inside the shield and is arranged in parallel with the camera assembly. 7 . 7. The pan-tilt camera according to claim 6, characterized in that: the front end of the shield is also provided with electrically heated optical glass corresponding to the zoom laser.