Abstract: A method and a system for pollutant identifying and early warning based on cluster analysis include steps of: installing multiple high-definition cameras on a river or a sluice dam, capturing pollutant images in front of the sluice dam at certain intervals, and transmitting the pollutant images captured by the high-definition cameras to a computer; reading the pollutant images transmitted to the computer; extracting a main pollutant color in the pollutant images through cluster analysis; calculating a difference between the main pollutant color and RGB data in a pollutant color gamut database, and setting an aberration threshold to identify the pollutant color; performing scale conversion with two sets of common point image pixel coordinates and actual plane coordinates to calculate a current pollutant area; and judging whether a polluted area exceeds a critical value according to a preset pollutant area threshold, thereby realizing early warning.

Abstract: Provides heating pump cover and heating pump, heating pump cover comprises: cover body, comprising flange plate and sealing piece, sealing piece is outside and integrally connected with flange plate, with cross-section stepped, flange plate comprises first surface and second surface arranged oppositely, first surface is for contacting with liquid, temperature control assembly, arranged on second surface, heating body, arranged on one side of first surface, and end of heating body penetrates flange plate, sealing and connecting flange plate, connecting to temperature control assembly by electric circuit. Arranging sealing piece on outer side of flange plate on cover body, with cross-section stepped, after being installed onto pump body, achieving multi-level snapping and sealing, effectively avoiding situation of liquid leakage happen at connecting portion between cover body and pump body due to aging or not tightly sealing, improving sealing performance and reliability of cover body installation.

Abstract: Disclosed are a heating pump cover and a heating pump. The heating pump cover comprises a cover body, a temperature control device, a raised part, and a heating body. The cover body has a first surface configured to be in contact with liquid on which the heating body is arranged and a second surface opposite to the first surface on which the temperature control device and the raised part are arranged. The raised part forms grooves on the first surface and the temperature control device is arranged on the raised part. The part of the heating body locates in the grooves has a first region which is in contact with the inner wall of the groove and a second region which is arranged interval with the inner wall of the groove.

Abstract: A fitness equipment LED electronic meter, comprising a PCB, a support, and a panel, wherein the PCB is connected to the back surface of the support, and the panel is locked to the front surface of the support; the front surface of the PCB is provided with a display module consisting of a plurality of LEDs; a plurality of first grooves passing through the support are provided on the support; the LEDs are fitted in the first grooves; a diffusion film and a semitransparent plate are sandwiched between the panel and the support, and sequentially abut against the front surface of the support. The fitness equipment LED electronic meter improves the display effect of the electronic meter, avoids the situation that the display effect of the electronic meter is affected due to deformation of the panel and loosening of screws, and improves the fitness experience of people.

Abstract: A method and a system for pollutant identifying and early warning based on cluster analysis include steps of: installing multiple high-definition cameras on a river or a sluice dam, capturing pollutant images in front of the sluice dam at certain intervals, and transmitting the pollutant images captured by the high-definition cameras to a computer; reading the pollutant images transmitted to the computer; extracting a main pollutant color in the pollutant images through cluster analysis; calculating a difference between the main pollutant color and RGB data in a pollutant color gamut database, and setting an aberration threshold to identify the pollutant color; performing scale conversion with two sets of common point image pixel coordinates and actual plane coordinates to calculate a current pollutant area; and judging whether a polluted area exceeds a critical value according to a preset pollutant area threshold, thereby realizing early warning.