39results about How to "Control the degree of opening and closing" patented technology

An iris controlling method and apparatus for improving definition of a bright object, wherein the photographing apparatus includes an iris, a controlling unit for establishing a shutting level of the iris based on a brightness level of a photographed object and which is capable of limiting the iris shutting level to be less than a predetermined shutting level which is lower than the maximum shutting level of the iris, and an iris operating unit for controlling the shutting extent of the iris based on the iris shutting level established in the controlling unit. Accordingly, degradation of the definition of the object is prevented even though the photographed object is very bright.

The invention discloses a molding device and molding method for an eccentric spiral optical cable pigtail, relates to the field of optical cable pigtail molding, and includes a second mold for bending the middle part of the spiral section of the optical cable pigtail, and the second mold includes a rotating A mold core and a rotating nut sleeved on the rotating mold core. One end of the rotating mold core is provided with a first semi-circular arc section, and a side of the first semi-circular arc section away from the rotating mold core is provided with a The first fixing structure for fixing the optical cable pigtail, the middle part of the rotating mold core is provided with a threaded section, the rotating nut is threadedly connected with the threaded section, and one end of the rotating nut close to the first fixing structure passes through a The rotating shaft fixes a second pressure wheel, and a second section for the optical cable pigtail to pass is formed between the second pressure wheel and the rotating mold core. The present invention completes the bending operation of the helical section of the optical cable pigtail through the second mold, and During the demoulding operation, it has the characteristics of simple demoulding and no damage to the pigtail of the optical cable.

One or more embodiments of this specification provide a battery protection device, which includes a battery case, and the poles at both ends of the battery case are electrically connected with connecting pieces to connect and conduct with the tabs of the battery core body, and are externally connected through an expansion valve. There is a liquid inlet pipe to introduce the cooling liquid, and it is attached to the outer side wall of the battery core through the liquid outlet pipe to cool down and dissipate heat. The temperature sensing package is filled with expansion liquid to sense the temperature of the liquid pipe and control the expansion. The opening and closing degree of the valve can automatically adjust the heat dissipation in real time. There is also a switch mechanism on the expansion valve. At the same time, a screw and a nut that engage with each other are provided. The hollow interior of the nut is filled with flame retardant powder. The elastic film is clamped and fixed by the elastic rope. When the sensing temperature of the temperature sensor reaches the limit threshold, the switch mechanism can be triggered to trigger the conduction top thorn mechanism to pierce the connecting piece and the elastic rope to throw the flame retardant powder, thereby realizing the functions of timely extinguishing and isolating the battery.

The invention discloses an adjustable museum display cabinet constant humidity system. A plurality of museum display cabinets are arranged in a museum exhibition room, the constant humidity system comprises a constant humidity unit, the constant humidity unit is communicated with the museum display cabinets through an air conveying pipeline and feeds constant humidity air into the museum display cabinets in a positive pressure mode, the air conveying pipeline comprises a main pipeline and a plurality of branch pipelines, and the branch pipelines are communicated with the museum display cabinets in a one-to-one correspondence mode. Each museum display cabinet is connected with a microenvironment humidity measuring and control system, each microenvironment humidity measuring and control system comprises a valve, a humidity sensor and a microenvironment humidity measuring and control module, and the microenvironment humidity measuring and control modules and a microenvironment intelligent monitoring platform transmit information through communication modules. The adjustable museum display cabinet constant humidity system has the advantages that the defect that the moisture control amounts of all the museum display cabinets are unbalanced is overcome, the danger that control over the humidity of the rear end museum display cabinets is insufficient is eliminated, and the effect of building differentiated humidity environments in the different museum display cabinets of the same exhibition room is achieved.

The invention provides an airfoil-shaped trawl net panel. The airfoil shape trawl net board includes an airfoil net board, an active deceleration mechanism, a limit mechanism, a transmission mechanism, a level adjustment mechanism, and a depth adjustment mechanism, and the airfoil net board includes two curved side boards, a top board and a bottom board , the two curved side plates are symmetrically arranged, and the top plate and the bottom plate are respectively welded to the upper end and the lower end of the two curved side plates, the active deceleration mechanism is fixedly connected in the airfoil net plate, and the active deceleration mechanism The mechanism includes an arc-shaped water baffle, a sliding rod, a box body, a fixed plate, a spring, a groove and a resistance plate. One end of the sliding rod penetrates through the airfoil mesh plate and is fixedly connected with the arc water baffle, and the box body is fixedly connected between the two curved side plates. The airfoil-shaped trawl net plate provided by the invention has the advantages of high stability, increased fishing capacity of fishing boats and reduced energy consumption.