34results about How to "High speed conversion" patented technology

The present invention relates to a formula (II) shown hydrindene-1,3-dione compound catalysis synthetic method which is as follows: in an organic solvent and under a nitrogen atmosphere, in the presence of a catalyst, an oxidant, and an organic ligand and an adjuvant, self cyclization of a formula (I) compound is performed, the formula (II) compound is obtained by after-treatment after the end of the reaction, the method uses the new catalyst, the oxidant, the organic ligand, the organic solvent and the adjuvant for comprehensive selection and optimization to achieve material high-speed conversion, the yield of the target product can be greatly improved, the needs of industrial production can be better met, and the method has a broad market prospect.

The invention discloses a convolutional neural network-oriented dual-phase coefficient adjustable analog multiplication calculation circuit, which belongs to the technical field of calculation, calculation and counting. The multiplication calculation circuit includes a current-type network digital-to-analog conversion module, a dual-phase coefficient adjustable analog multiplication array, a pipeline-type analog-to-digital conversion module, and a calculation unit control module. The discrete-time circuit structure is used to realize the multiplication calculation of the neural network layer, and a new The signed multiplier design provides positive control and negative control, which can realize multiplication with signed bits and provide a wider range of voltage amplitudes.

The invention discloses an ASK-FSK converter and a conversion method, which relate to the field of optical communication and are invented for solving the problem that fast conversion of an ASK optical signal into an FSK optical signal cannot be realized in the prior art. The embodiment of the invention provides the ASK-FSK converter, which comprises a beam splitter, a light generator, a first optical coupler, a polarization modulator and a second optical coupler. Based on the ASK-FSK converter, the ASK optical signal can be split into two paths, wherein one path of the ASK optical signal interacts with continuous polarized light in the polarization modulator to change the polarization state of the polarized light to convert the polarized light into an optical signal which is logically opposite to the ASK optical signal has a frequency different from that of the ASK optical signal; and then the optical signal which is logically opposite to the ASK optical signal is coupled with the other path of the ASK optical signal to obtain the FSK optical signal. The converter and the method are suitable for fast conversion of the ASK optical signal into the FSK optical signal.

The invention discloses a high-speed three-state ADC (Analog-to-Digital Converter), which belongs to the technical field of analog-to-digital conversion of electronic signals. When a switch of a capacitance source works at a high frequency, high-speed sampling on input and output of the capacitance source is realized, and the output voltage and current quality of the capacitance source is improved. An analog signal Ui is converted into a high-level clamping comparison signal VH and a low-level clamping comparison signal VL according to different proportions respectively, and the voltage value of the VH is higher than that of VL; reference voltages Vh and VI compared with the VH and VL are set in logic and structure respectively; when VH is greater than Vh, Po is equal to 1; when VL is smaller than VI, Po is equal to 0; when VH is smaller than Vh and VL is greater than VI, Po is equal to Pi; input Uih corresponding to the Vh and input Uil corresponding to the VI form a voltage interval of the analog signal. According to the high-speed sampling applied to the constant-voltage output and constant-current output of the capacitance source, a plurality of structures of different voltage intervals are combined to realize high-speed ADC application of continuous voltage signal sampling and the like.

The invention relates to an automatic high-speed metal tube cutting machine. The automatic high-speed metal tube cutting machine comprises a machine frame assembly and a shearing machine assembly. A lower hydraulic cylinder assembly is arranged at the bottom of the shearing machine assembly. A side hydraulic cylinder assembly is arranged on a side face of the shearing machine assembly. The shearing machine assembly comprises a main machine base, wherein an inner floating cutter assembly, an inner fixed cutter assembly, an outer floating cutter assembly and an outer fixing cutter assembly are arranged in the main machine base. The outer floating cutter assembly is sleeved with an upward-downward moving die and a leftward-rightward moving die, wherein the leftward-rightward moving die and the upward-downward moving die are tightly buckled, the lower surface of the upward-downward moving die is fixedly connected with a first piston rod of the lower hydraulic cylinder assembly, and a side face of the leftward-rightward moving die is fixedly connected with a second piston rod of the side hydraulic cylinder assembly. The automatic high-speed metal tube cutting machine has the advantages that no scrap iron exists, one time of cutting is completed within three seconds, noise is low, shearing accuracy is high, automatic cutting can be achieved, the automatic high-speed metal tube cutting machine is suitable for shearing workpieces with the fixed size and any lengths in batches, use is safe, man-machine work efficiency is high, the structure is firm, rigidity is high, vibration is small, the cutting size can be converted at a high speed, and operation and maintenance are easy and convenient.