4results about How to "Highly adaptable" patented technology

The utility model provides a kind of elastic shock absorption connecting device of X-type folding frame, including first frame body and second frame body, first frame body and second frame body are equipped with composite shock absorption component, lifting adjustment component and light weight connecting seat, composite shock absorption component includes two groups of mirror image setting cross air spring unit and transverse connecting rod linkage unit, lifting adjustment component includes double-nut screw rod unit and driving motor, light weight connecting seat includes first connecting seat and second connecting seat, both sides of first connecting seat and second connecting seat are equipped with lug plate, cross air spring unit and transverse connecting rod linkage unit are mutually spaced along four sides of first connecting seat, second connecting seat setting.The utility model has the beneficial effects that: by composite shock absorption and high-precision adjustment design, significantly improve ride comfort and adaptability, cross air spring unit and transverse connecting rod form three-dimensional shock absorption system, effectively absorb multidirectional impact, reduce vertical vibration attenuation rate, lateral attenuation rate.

This invention discloses an adjustable shading device for simulating low-light habitats for crops in the field, relating to the field of agricultural technology. The key technical features are: a telescopic rod and a semi-circular tube, with a first rain-collecting pipe connected to both ends of the semi-circular tube; a track fixedly connected to both ends of the telescopic rod; and the first rain-collecting pipe movably connected to the track. This invention provides shading without affecting the crop's growth environment, collects rainwater, automatically adjusts the shading spacing, and facilitates loading and unloading.

This invention relates to a fast decryption method for attribute-based encryption using a key policy based on SM9. The method includes: a key generation center first generates system public parameters and a system master private key based on given system security parameters; secondly, it defines the system's attribute space based on the attributes used in the system; finally, it publishes the system public parameters but keeps the master private key secret; the data owner encrypts the message based on the attribute set corresponding to the data, generating corresponding ciphertext; the key generation center sets an access policy based on the user's decryption permissions, where a matrix is ​​used to map rows in the matrix to attributes in the attribute set, generating a private key corresponding to the corresponding access policy; after receiving the ciphertext, the data receiver can successfully decrypt it if and only if the attribute set in the ciphertext satisfies the access policy on the key; otherwise, decryption fails. This invention overcomes the decryption efficiency problem in attribute-based encryption algorithms using a key policy based on SM9.

The present application relates to the technical field of coal mine underground gas extraction, in particular to a mine underground gas extraction drilling intelligent regulation method and device. The method comprises: S1: obtaining the gas concentration data of each drilling hole in the current coal seam to calculate the gas attenuation coefficient of the current coal seam; S2: calculating the predicted gas concentration at the future time based on the gas attenuation coefficient of the current coal seam; S3: calculating the predicted fluctuation range of each period in the future through the predicted gas concentration of the current coal seam at the future time; S4: based on the continuous real-time gas concentration data of the target drilling hole of the current coal seam, and calculating the average gas concentration of the target drilling hole in the current period; S5: comparing the average gas concentration of the target drilling hole in the current period with the predicted fluctuation range of the current period, evaluating the extraction state of the target drilling hole, and selecting the corresponding adjustment strategy to realize the valve adjustment of the target drilling hole. The present application can improve the accuracy and efficiency of drilling valve regulation in mine underground gas extraction.