Position locating structure and automatic focusing system containing the same

The invention discloses a position locative structure and automatically focusing system, which can generate the same efficacy with the PI without mounting PI and reduce the bulk of the focusing system is reduced. The automatically focusing system comprises a step motor; a base provided with a groove and a judgement circuit with a break point; a lens mounted in the groove and provided with conductive piece and connected with the step motor by a mid gear, and rotating by the drive of the step motor and mid gear, when the conductive piece is at the break point position of the judgement circuit, the judgement circuit is turned on to generate an electrical signal for locating; and a spring mounted on the lens. The invention is applied in the field of lens focusing system.

Pressure compensation method for hydraulic part shell in underwater environment

The invention relates to a pressure compensation method for a hydraulic part shell in an underwater environment, which comprises the following steps of: providing an oil return pipeline, and connecting the oil return pipeline with the hydraulic part shell and an oil tank; and providing an adjusting valve, installing the adjusting valve on the oil return pipeline, and adjusting the internal pressure of the hydraulic part shell by using the adjusting valve so as to maintain the internal and external pressure difference of the hydraulic part shell within a set range. A hydraulic on-way resistance link is added between the hydraulic part shell and the oil tank through the oil return pipeline and the adjusting valve, the internal pressure and the external pressure of the hydraulic part shell are maintained within a set range by adjusting the internal pressure of the hydraulic part shell, and it is ensured that the hydraulic part shell is used safely in the underwater environment; and crushing ...

Position locating structure and automatic focusing system containing the same

Gyroscopic effect demonstrator

The invention discloses a gyroscopic effect demonstrator. The gyroscopic effect demonstrator comprises a base. The gyroscopic effect demonstrator is characterized by further comprising a storage battery arranged on he base, a vertical rod, an electric brush carrier located on the vertical rod and formed by a bottom plate and a non-conductor electric brush sleeve rods equipped with upper and lower non-conductor electric brush sleeves, a rotating shaft crossed through a bottom plate hole on the bottom plate of the electric brush carrier and inserted to a blind hole of the vertical rod, a non-conductor metal electric brush ring base arranged with upper and lower metal electric brush rings on the rotating shaft, an operation handle fixed by a screw and an inside thread at the upper end face of the rotating shaft, and a U-shaped lower bracket, a reverse-U shaped upper bracket linked and rotated with two end parts of the U-shaped lower bracket through threads, and an airplane model body fixed ...

Optical zoom lens control device

The invention discloses a control device of an optical zoom lens. The control device comprises two groups, two guide poles, a direct current motor, a zoom cam and a control rod; a deflector rod, a stepping motor with a focusing nut, a supporting frame, an upper cover, a base and an image sensor are arranged at the bottom part of the control rod; wherein, a gear is arranged at the top part of the direct current motor; a gear is arranged on one side of the zoom cam; a rack is arranged at one end of the control rod; the two groups are movably connected between the two guide poles; one end of eachof the two guide poles is fixed on the supporting frame, the other ends are fixed on the side wall of the base; one side of the supporting frame is connected with the direct current motor, the otherside is connected with the control rod; the gear of the direct current motor is meshed with the rack of the control rod; the rack of the group B is meshed with the gear of the zoom cam; the deflectorrod ...

Optical zoom lens control device

The invention discloses a control device of an optical zoom lens. The control device comprises two groups, two guide poles, a direct current motor, a zoom cam and a control rod; a deflector rod, a stepping motor with a focusing nut, a supporting frame, an upper cover, a base and an image sensor are arranged at the bottom part of the control rod; wherein, a gear is arranged at the top part of the direct current motor; a gear is arranged on one side of the zoom cam; a rack is arranged at one end of the control rod; the two groups are movably connected between the two guide poles; one end of each of the two guide poles is fixed on the supporting frame, the other ends are fixed on the side wall of the base; one side of the supporting frame is connected with the direct current motor, the other side is connected with the control rod; the gear of the direct current motor is meshed with the rack of the control rod; the rack of the group B is meshed with the gear of the zoom cam; the deflector rod ...

Floating operation platform of open caisson soil body excavation equipment

The invention discloses a floating type operation platform of open caisson soil excavation equipment. The floating type operation platform comprises a platform frame (1), buoys (2), walkway plates (3), guardrails (4) and lifting rotating assemblies. The platform frame is of a cylindrical frame structure, a first hollow part (101) is formed in the middle of the platform frame, and the floating cylinder is embedded in the platform frame, so that the platform frame can float in the open caisson through the floating cylinder; the lifting rotating assembly is arranged in the center of the top of the platform frame, and the output end of the lifting rotating assembly penetrates through the first hollow part and is connected with the mechanical arm hanging bracket, so that the mechanical arm hanging bracket can ascend and descend in the open caisson through the lifting rotating assembly; the walkway plate is laid on the top face of the platform frame and located on the periphery of the lifting ...

Lens automatic focusing device and automatic focusing method

The invention relates to a communication apparatus, in particular to an automatic focusing mechanism and an automatic focusing method, wherein, the circumference on the upper end of a barrel of a mounting lens is provided with an extended external gear; the lower end of the barrel is provided with a plurality of supporting sliders which are uniformly distributed around the circumference at intervals; a pedestal is provided with a circular hollow cavity the bottom of which is provided with a plurality of sections of continuous curved slideways with the same structure around the circumference; the number of the sections of the curved slideways corresponds to that of the supporting sliders; a step motor drives a first gear which is arranged on a rotating shaft, engaged with the external gear of the lens through a second gear and then drives the supporting sliders of the lens to rotate on the curved slideways; and the step motor is controlled by a chip provided with an automatic focusing procedure ...

Six-degree-of-freedom underwater robot for vertical shaft tunneling

The six-degree-of-freedom underwater robot comprises a fixed base (1), a rotary table assembly, a mechanical arm assembly, a swing driving part (3), a dredging pump (4) and a lifting driving part (5). The fixed base is fixedly installed in the center of the top of a cross beam of the open caisson structure, and the rotary table assembly is rotatably installed on the fixed base. The lifting driving part is fixedly installed on the rotary table assembly, one end of the mechanical arm assembly is rotationally connected with the driving end of the lifting driving part, and the bottom of the mechanical arm assembly is rotationally connected with the rotary table assembly, so that the mechanical arm assembly can synchronously and horizontally rotate along with the rotary table assembly and vertically rotate relative to the rotary table assembly through the lifting driving part; the dredging pump is installed at the other end of the mechanical arm assembly in a swing mode through the swing driving ...

Optical zoom lens control device

The invention discloses a control device of an optical zoom lens. The control device comprises two groups, two stepping motors, two guide poles, two photoelectric sensor switches, an upper cover, a base and an image sensor; wherein, the two groups, the two stepping motors and the two guide poles are all arranged in a box body which is composed of the upper cover and the base; the two stepping motors are respectively fixedly connected with the upper cover and the base; the two photoelectric sensor switches are respectively arranged on the upper cover and the base; the two groups are movably connected between the two guide poles, the two guide poles are fixed on the side walls at the both ends of the base; grooves are respectively arranged on the groups; movable focusing nuts are arranged on the stepping motors, and convex blocks on the focusing nuts are matched with the grooves on the groups; and the image sensor is arranged at one end of the base. Through controlling the movement of the ...

Telescopic arm structure and water insulation method thereof

The invention relates to a telescopic boom structure and a water insulation method thereof. The telescopic boom structure comprises a cylindrical first boom section and a second boom section, the first arm section is cylindrical, the second arm section is cylindrical, the size of the second arm section is matched with the size of the first arm section, the second arm section is inserted into the first arm section, the second arm section can be telescopically adjusted relative to the first arm section, and a gap between the second arm section and the first arm section ranges from 0 mm to 2 mm. According to the telescopic arm structure, the arm sections are cylindrical, so that the gaps between the arm sections are controlled to be as small as possible, large foreign matters are prevented from entering the telescopic arm structure, the foreign matters are prevented from abrading and clamping a structural part, invasion of the large foreign matters can be effectively prevented, and the effect ...

Lens automatic focusing device and automatic focusing method

The invention relates to a communication apparatus, in particular to an automatic focusing mechanism and an automatic focusing method, wherein, the circumference on the upper end of a barrel of a mounting lens is provided with an extended external gear; the lower end of the barrel is provided with a plurality of supporting sliders which are uniformly distributed around the circumference at intervals; a pedestal is provided with a circular hollow cavity the bottom of which is provided with a plurality of sections of continuous curved slideways with the same structure around the circumference; the number of the sections of the curved slideways corresponds to that of the supporting sliders; a step motor drives a first gear which is arranged on a rotating shaft, engaged with the external gear of the lens through a second gear and then drives the supporting sliders of the lens to rotate on the curved slideways; and the step motor is controlled by a chip provided with an automatic focusing procedure ...

Underwater excavation prefabricated open caisson bottom center offset measuring method

The invention discloses an underwater excavation prefabricated open caisson bottom center offset measuring method which comprises the steps that 1, a fixed beam (2) is arranged in a blade foot ring (11) of an open caisson (1), and the center of the fixed beam is connected with a floating ball (4) through a hanging rope (3); 2, the floating ball floats on the water surface (5) through the hanging rope; 3, a binocular camera (6) is arranged above the floating ball, two cameras of the binocular camera are symmetrically located on the two sides of the floating ball, a measuring point coordinate model is established, and the coordinates of the center of the floating ball in a camera coordinate system are obtained through the binocular camera and the measuring point coordinate model; 4, calibrating a camera coordinate system, converting the camera coordinate system into a world coordinate system, and obtaining coordinates of the center of the floating ball in the world coordinate system; and ...