34results about How to "Instant adjustment" patented technology

The invention provides a mechanism for detecting clamping force of a test piece in a flat thermal conductivity coefficient measuring instrument, which comprises a mechanical part, a displacement detecting part and a pressure conversion part. A high-precision displacement sensor which can detect the micro-displacement of the instrument barrelhead is arranged on an instrument barrelhead, and the clamping force received by the test piece can be converted through detecting the output of the displacement sensor. The invention also provides a calibration method of the mechanism for detecting clamping force of the test piece in the flat thermal conductivity coefficient measuring instrument. The effect of the invention is achieved as follows: the clamping force received by the test piece can be calibrated in real time through a clamping force detecting mechanism and the calibration can be carried out on the clamping force detecting mechanism by utilizing a standardized pressure value, and theconsistency of the clamping forces received by the test piece is ensured in repeated measurements, thereby improving the accuracy and the repetitiveness of the thermal conductivity coefficient measurement. The thermal conductivity coefficient instrument with the mechanism for detecting the clamping force of the test piece can be used widely in enterprises producing heat insulation materials, relevant quality inspection departments and units, scientific research institutions like universities and colleges, research institutions and the like.

The invention relates to a homomorphic encryption privacy protection method for a wireless sensor network, in particular to ensure the redundancy of data through a linear restoration algorithm and ensure the privacy of data through homomorphic encryption. The linear restoration algorithm is to add hidden fragmented data information to the fragmented data to ensure that even in the case of data packet loss, the hidden data information is used to restore the original data, and the privacy of the data is guaranteed through the homomorphic encryption algorithm. Data privacy protection. At the same time, the combination of homomorphic encryption addition and linear reduction will not increase the amount of calculation too much, which is suitable for the characteristics of weak computing power of wireless sensors.

The invention discloses a system configuring and testing method in the production of an IPTV (Internet Protocol Television) set top box, which comprises the steps of: realizing hardware detection by combining Java Script expansion and CGI (Common Gateway Interface) technology, and compiling into a hardware test interface, wherein the hardware test interface is used for detecting the working states of USB equipment, a CPU (Central Processing Unit), an internal memory and a network card of the IPTV set top box; compiling into a configuration information detection interface, wherein the configuration information detection interface is used for detecting network configuration information and software version information of the IPTV set top box; operating a browser in the set top box by a tester through a remote controller for loading a test web page, and testing the software of the set top box through an EPG (Electronic Program Guide) page; and completing the configuration of basic information of the set top box by adopting the web page and the browser on the basis of the set top box and combining with a stream media server erected externally. The invention has the advantages of simplicity and rapidness in development and maintenance, low cost, no need of developing complex programs and optimization of large-scale production processes, and solves the problems of batch testing of the produced set top boxes and configuration on the set top boxes.

The invention provides a leakage-proof device for a pressure water pipe lead-out line interface, which belongs to the fields of fluid equipment design, manufacture and technical application. The leakage-proof device for the pressure water pipe lead-out line interface comprises a hollow sleeve, a rubber sealing element, a threading pipe core and a stress nut, wherein the hollow sleeve is welded ona submersible pump power line lead-out interface of a pressure water pipe; the rubber sealing element is pressed in the hollow sleeve through the threading pipe core; the threading pipe core is fixedon the hollow sleeve through the stress nut; a pressure water pipe threading hole is formed on the position opposite to the position where the pressure water pipe is welded with the hollow sleeve; a sealing element threading hole, which is matched with the pressure water pipe threading hole and through which the submersible pump power line can be led out of the pressure water pipe, is formed on the rubber sealing element; and a threading pipe core outlet hole matched with the sealing element threading hole is formed on the threading pipe core. The leakage-proof device for the pressure water pipe lead-out line interface has good sealing effect, is convenient to assemble and disassemble, and can realize immediate sealing tight regulation under the working condition of a water pump.

The invention discloses a voltage detector and a communication circuit. Compared with the prior art, the voltage detector can detect a lower input voltage. The result of the detection of the voltage detector of the invention can be used as a basis for adjusting circuit parameters, so that a condition that an excessively high input voltage damages a later-stage circuit can be avoided. According toan embodiment of the invention, the voltage detector includes an alternating current coupling circuit, a feedback amplifying circuit and an auxiliary circuit; the alternating current coupling circuitis used for generating a first input voltage and a second input voltage according to an input voltage; the feedback amplifying circuit is used for outputting shunt current according to source and sinkcurrent and determining an output voltage according to the first input voltage and the quantity of the shunt current; and the auxiliary circuit for determining the quantity of the source and sink current according to the second input voltage, wherein the source and sink current contains the shunt current. The output voltage increases with the rise of the first input voltage, and additionally increases as the shunt current increases, and therefore, the slope of the change of the ratio of the output voltage to the input voltage is larger, and testing can be benefitted.