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76results about How to "Small and simple" patented technology

Calibration system and calibration method of humidity-temperature sensor

The invention discloses a calibration system of humidity-temperature sensor, comprising a calibration chamber of which the top is provided with multiple to-be-measured sensor sockets for mounting to-be-measured sensors; an environmental chamber arranged below the calibration chamber and comprising a saturated salt solution container that is used for holding saturated salt solution and arranged in the heat transferring medium of a water bath tank, and the water bath tank; a temperature control chamber arranged below the environmental chamber and used for fast heating or cooling the water bath tank; a thermal container which is used for keeping the measurement environment stable and in which the calibration chamber, the environmental chamber and the temperature control chamber are arranged; and a control circuit for controlling the heating or cooling of the temperature control chamber. The invention also discloses a calibration method of humidity-temperature sensor. The invention realizes the calibration of humidity-temperature sensor by the same system, and is compactly structured, simple and practical. The calibration has small time consumption and is convenient for practical operation. The calibrating device of the invention is simple, has small volume, can realize portable measurement, has cheap material and low cost, and can be popularised and applied in large scale.
Owner:CHINA AGRI UNIV

Wing folding and unfolding mechanism for cylindrical launching unmanned aerial vehicle

The invention discloses a wing folding and unfolding mechanism for a cylindrical launching unmanned aerial vehicle. A torsion spring serves as wing surface expanding power, the mechanism is simple andreliable, and dependence on the environment is small; a bevel gear serves as a synchronous mechanism for the wing surface expanding process, the mechanism is simple and small in size, a wing surfacecan be unfolded completely and synchronously, and the flight reliability of the unmanned aerial vehicle is improved; a locking pin serves as a locking mechanism after the wing surface is expanded, thestructure is simple and small in size, reliability is good, a locking pin cap is designed, thus it is ensured that a wing can be rapidly folded after the unmanned aerial vehicle is retracted, and retracting of the unmanned aerial vehicle is competed; different balls serve as the contact form between motion interfaces, the friction resistance of the opening process is reduced, and rapidity of theopening process is ensured; and the overall folding mechanism is high in integration degree, simple, small in size, easy to assemble, and easy and convenient to operate, and the demands of the cylindrical launching unmanned aerial vehicle for wing folding are met.
Owner:GENERAL ENG RES INST CHINA ACAD OF ENG PHYSICS

Method and device for joint denitrifying by denitrification and anaerobic ammonia oxidation embedding particles

The invention relates to a method and a device for joint denitrifying by denitrification and anaerobic ammonia oxidation embedding particles, and belongs to the field of sewage. The method comprises the following steps of respectively embedding a WPU (water-borne polyurethane) material by separated denitrification bacteria and anaerobic ammonia oxidation bacteria, putting the denitrification embedding particles into a flow-separated ball, putting anaerobic ammonia oxidation embedding particles into a Pall ring or into water in a floating state, and setting the denitrification embedding particles and the anaerobic ammonia oxidation embedding particles into an incomplete mixing state. The device comprises a water bath constant-temperature system, a sealing device, the flow-separated ball, the Pall ring and the like. The method and the device have the advantages that after embedding of the denitrification bacteria and anaerobic ammonia oxidation bacteria, the influence to the activity is avoided, the amounts of the denitrification bacteria and the anaerobic ammonia oxidation bacteria in the system are increased, the loss of bacteria amounts is reduced, the problems of slow growth of the anaerobic ammonia oxidation bacteria and stricter growth environment requirement in an anaerobic ammonia oxidation technology are solved, and the denitrifying efficiency of the system is improved by combining a nitrifying mode; the two types of embedding are set into the incomplete mixing state in the device, and respective feeding ratios can be flexibly adjusted according to the water quality.
Owner:BEIJING UNIV OF TECH
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