Hong Kong Applied Science and Technology Research Institute Company, Limited

Yuelin Wang

Chun Zhang

Zhinan Yu

Mengting Wu

Naixiang Wang

Ming Leung Vincent Tse

Ziqi Wang

Anson Chan

An automated diamond color-grading machine color grades a continuous line of diamonds without human color evaluation. A sample diamond is carried by an input conveyor and placed on a mount on a rotating plate by a robotic arm. The rotating plate has Nm mounts with Nr master stones of known color grades and Ns sample diamonds. A camera takes a photo of the rotating plate with all diamonds and then a step motor rotates the plate by 360/Nm degrees and another photo captured. This is repeated Nm times so that the sample diamond and all master stones are each imaged in all Nm possible rotational positions. Pixels are averaged over all positions for each diamond to get an average x,y value for each diamond. The color grade of the sample diamond is the master stone with the closest less-color x,y average.

Continuous line for automatic diamond color grading evaluation

The present invention provides a method and a system for remote imaging of explosive gases in an area. The method comprises: illuminating the area with a light source having a uniform light intensity distribution over an infrared wavelength range; acquiring images of the illuminated area with an image sensor through gas detection filters having bandpass central wavelength corresponding to absorption curves of target gases respectively; determining existence of the target gases based on the acquired images; predicting distribution of gas concertation for existing target gases respectively by using a non-linear prediction model; and constructing gas distribution images of the area based on the predicted distribution of gas concertation. The present invention can recognize different gases with overlapping absorption curves and provide more accurate prediction of gas concentrations.

Method and system for remote imaging explosive gases

A wearable electronic device including: a first portion and a second portion. The first portion includes a first conductive area on a first inner surface of the first portion and a third conductive area on a first outer surface of the first portion. The second portion includes one or more second conductive areas on a second outer surface of the second portion and a fourth conductive area on a second inner surface of the second portion, wherein the first portion is connected to the second portion. A circuit unit is disposed in a second space of the second portion, wherein the circuit unit is configured to enable an input/output unit of the circuit unit in response to the first conductive area and the second conductive areas are triggered.

Wearable electronic device

Growing community of inventors

Hong Kong, China

Yuelin Wang