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139results about How to "Improve positioning accuracy" patented technology

Method and device for automatically positioning urine and healthy and intelligent closestool comprising device

The invention discloses a method for automatically positioning urine. The position of the urine is determined according to the result of temperature scanned by a non-contact temperature sensor, and position point coordinates of the urine in a closestool are calculated. The invention further discloses a device for automatically positioning the urine. From the perspective of a virtual module framework, the device comprises an automatic urine positioning module adopted in the method; from the perspective of a solid structure, the device comprises one or more sets of positioning assemblies, and the positioning assembly comprises the non-contact temperature sensor connected with a stepping motor spindle. The invention further discloses the closestool comprising the device for automatically positioning the urine. The point coordinates of the urine are determined according to the temperature (the urine temperature or both the urine temperature and the environment temperature) scanned by the non-contact temperature sensor, the urine is sucked in the air to serve as a sample for health analysis, the problem of cross contamination caused by suction of the urine sample on the inner surface of the closestool is avoided, accuracy of health data analysis is improved, and the method, the device and the closestool are suitable for application and popularization.
Owner:SHANGHAI KOHLER ELECTRONICS TECH

Magnetic particle imaging three-dimensional reconstruction method, system and device based on field free point (FFL)

The invention belongs to the field of magnetic particle imaging and particularly relates to a magnetic particle imaging three-dimensional reconstruction method, system and device based on a field freepoint (FFL). The magnetic particle imaging three-dimensional reconstruction method, system and device based on the FFL aim at solving the problem of low accuracy of a magnetic particle distribution three-dimensional image based on the FFL. The magnetic particle imaging three-dimensional reconstruction method comprises the steps that current signal data of an induction coil in the three-dimensional scanning process of a scanned target based on the FFL are obtained; based on the current signal data, deconvolution is conducted through a preset kernel function, and thus a two-dimensional image data set is obtained; the kernel function is a jump function for increasing L2 regularized constraint; based on the two-dimensional image data set, an initial three-dimensional image is obtained througha Wiener filtering deconvolution algorithm; and based on the initial three-dimensional image, deconvolution is conducted through a Langevin function, and a final three-dimensional image is obtained through Radon transformation. The magnetic particle positioning accuracy in the reconstructed three-dimensional image is improved.
Owner:INST OF AUTOMATION CHINESE ACAD OF SCI
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