A multi string controller with independent current setting for each string is designed for solid state lighting applications. This controller can regulate multiple channels of LEDs. Each string may have a different forward voltage and current setting. A constant buck regulator is also integrated inside this controller to regulate the total current, which is fed into the LED output channels. The circuit also contains a feedback loop in order to precisely control the current passing through each string and is immune to transient conditions.

Disclosed are a method and device for detecting the security of an online shopping environment. The method comprises: according to the fact that a user is operating a website via a terminal browser, triggering a corresponding monitoring mode, the monitoring mode comprising an online shopping monitoring mode or a payment monitoring mode; and in the monitoring mode, if it is monitored that the website is an unknown website, and it is determined that the unknown website is a dangerous website according to a pre-set security policy, sending danger prompt information to the terminal, the security policy being a policy which is pre-set for guaranteeing the security of an online shopping environment, thereby ensuring the security of the online shopping environment of the user.

A power robot based binocular vision navigation system comprises an image collecting system, controlling, by using collecting software, a camera to collect an environment image on a forward road of a robot, and then transmitting the collected image to a vision analysis system in a wired manner; the vision analysis system, detecting a barrier according to binocular image information and camera inner-outer parameter information, and transmitting the information to a robot control system; and a path planning system, building a two-dimensional occupied map according to environment information collected by the image collecting system, to perform path planning, and timely adjusting a walking path of the robot when the a barrier appears, so as to prevent the robot from colliding with the barrier. Also disclosed is a vision navigation method, to prevent collision with a barrier. A self-adaptation capacity to environment is improved, an autonomous navigation function of a power robot is truly achieved in an outdoor complex environment, and the flexibility and safety of the power robot are improved.

Provided are a self-reinforced profiled material, a preparation method therefor and the use thereof. The self-reinforced profiled material comprises a core layer and a skin layer arranged outside the core layer, wherein the skin layer is made of a thermoplastic resin profile, and the core layer is made of a reinforced styryl composition material, with the parts by weight thereof being: 100 parts of a reinforced styryl composition material, and 5-100 parts of the thermoplastic resin profile; and the reinforced styryl composition material comprises the following components: 25-65 parts of a styryl copolymer, and 30-65 parts of a reinforcing agent. The preparation method therefor involves firstly preparing the reinforced styryl composition material; then performing co-extrusion using a main machine and an auxiliary machine perpendicular to the main machine, wherein the main machine is used for extruding the reinforced styryl composition material, the auxiliary machine is used for extruding the thermoplastic resin profile, and the main machine and the auxiliary machine simultaneously perform extrusion; and cooling and shaping after moulding to obtain the self-reinforced profiled material. The self-reinforced profiled material has excellent thermal insulation properties, a lower density, an excellent appearance, and a simple co-extrusion process, can be used as a material for wardrobe edging, office table edging and kitchen cabinet edging, and has a better application prospect.

A self-reinforced profile, a preparation method therefor and an application thereof. The self-reinforced profile comprises a PVC profile and a reinforcing lining material provided within the PVC profile cavity, the weight portions thereof are as follows: 100 parts of the PVC profile; 5 to 120 parts of the reinforcing lining material, the reinforced lining material comprising by weight 25 to 65 parts of a styrene-based copolymer; 20 to 40 parts of a reinforcing agent A; and 10 to 25 parts of a reinforcing agent B. The method for preparing the self-reinforced profile includes first preparing the reinforcing lining material, and then co-extruding by using a main machine and an auxiliary machine which is configured to be perpendicular to the main machine, the main machine being used for extruding the PVC profile, and the auxiliary machine being used for extruding the reinforcing lining material; the main machine and the auxiliary machine extruding at the same time, molding and then shaping by cooling, so as to obtain the self-reinforced profile. The self-reinforced profile may prevent the reinforcing lining and profile from peeling off during transportation, installation and use, as well as prevent carbonization of the PVC profile caused by high temperature co-extrusion; the present invention has excellent electrical conductivity, and can greatly reduce the risks of high-rise buildings being struck by lightning in thunderstorms.

A self-reinforced profile, a preparation method therefor and an application thereof. The self-reinforced profile comprises a PVC profile and a reinforcing lining material provided within a PVC profile cavity, the weight portions thereof are as follows: 100 parts of the PVC profile; 5 to 120 parts of the reinforcing lining material, the reinforced lining material comprising by weight 20 to 55 parts of a styrene-based copolymer; 5 to 30 parts of PBT or PMMA; and 30 to 65 parts of a reinforcing agent. The method for preparing the self-reinforced profile includes first preparing the reinforcing lining material, and then co-extruding by using a main machine and an auxiliary machine which is configured to be perpendicular to the main machine, the main machine being used for extruding the PVC profile, and the auxiliary machine being used for extruding the reinforcing lining material; the main machine and the auxiliary machine extruding at the same time, molding and then shaping by cooling, so as to obtain the self-reinforced profile. The self-reinforced profile may prevent the reinforcing lining and profile from peeling off during transportation, installation and use, as well as prevent carbonization of the PVC profile caused by high temperature co-extrusion; the present invention has good production stability and molding stability.

Disclosed in the present invention are a reinforced profile, a preparation method therefor and an application thereof. The reinforced profile comprises a core layer and a skin layer disposed outside the core layer, wherein the skin layer is a wood grain paper, and the core layer is a reinforced styrene-based composition material; and the reinforced styrene-based composition material comprises 25-55 parts of a styrene-based copolymer, 5-30 parts of PBT or PMMA, and 30-65 parts of a reinforcing agent. The preparation method therefor includes first preparing the reinforced styrene-based composition material, and then extruding the reinforced styrene-based composition material with a single screw extruder to be used as the core layer, followed by cooling and molding, and then pasting the wood grain paper on a surface of the core layer to obtain the reinforced profile. The reinforced profile of the present invention has excellent thermal insulation performance, low density and excellent appearance; the profile can be applied as edge covering materials for wardrobes, office desks and cabinets, and thus has a good application prospect.

A method for processing a human face-containing image, comprising: obtaining an human face-containing image in a current scene being photographed; performing human face recognition on the human face-containing image to obtain a human face area and an ambient light area other than the human face area; determining a human face determination point in the human face area and an ambient light determination point in the ambient light area; adjusting a white balance parameter according to the human face determination point, the ambient light determination point, and a set distance threshold; and adjusting the human face-containing image according to the white balance parameter.

Disclosed in the present invention are a self-reinforced profile, preparation method therefor and application thereof. The self-reinforced profile comprises a core layer and a skin layer arranged outside the core layer. The skin layer is a thermoplastic resin profile, and the core layer is made from a reinforced styryl alloy composition material. The reinforced styryl alloy composition material is 100 parts, and the thermoplastic resin profile is 5-100 parts. The preparation method comprises: firstly, preparing a reinforced styryl alloy composition material; co-extruding by using a main machine and an auxiliary machine which is configured to be perpendicular to the main machine, the main machine being used for extruding the reinforced styryl composition material, and the auxiliary machine being used for extruding the thermoplastic resin profiles; extruding with the main machine and the auxiliary machine at the same time; forming, then shaping by cooling to obtain a self-reinforced profile. The self-reinforced profile according to the present invention has excellent heat preservation and heat insulation performances, while having a low density and an excellent appearance; a co-extrusion technology is simple, and the profile can be used as edge covering materials for wardrobes, kitchen cabinets and office tables, and thus has a favorable application prospect.

A CT scanning device used for a rotating CT system, comprising: a rotating component, an X-ray source, an X-ray detector, and a high-voltage generator, wherein the power for the X-ray source is supplied by the high-voltage generator; and the X-ray detector has two power supply modes, i.e. a power supply mode of supplying power by an external device in a wireless manner and a power supply mode of supplying power to the X-ray detector by a power supply module or a storage power supply module, the power supply module or the storage power supply module being arranged on the CT scanning device. The CT scanning device expands the CT application range and depth. Because in the power supply and data transmission modes thereof, the existing rotating CT slip ring module is omitted, the problems of signal reliability reduction and the like due to the contact resistance instability during the contact type signal transmission in a high-speed rotating moving process can be solved, and moreover, the engineering problem that it is difficult for the rotating speeds to be uniform due to the multi-channel large-current large-mass slip ring is avoided; meanwhile, the engineering difficulty of the special rail rotating scanning CT system is reduced.

A long-term fuel management method for a reactor core of a pressurized water reactor. In the first cycle, the reactor core adopts a high-leakage loading mode, that is, an assembly with a high degree of enrichment and an assembly with a low degree of enrichment inside the reactor core match and are combined with each other, and a fuel assembly with the highest degree of enrichment is placed at the outermost cycle of the reactor core; and in the subsequent cycle, the reactor core adopts a low-leakage loading mode, that is, each updated new fuel assembly is placed inside the reactor core and is used in cooperation with a burnt-out old assembly, and the burnt-out old fuel assembly is placed at the outermost cycle of the reactor core. The method directly achieves a long-term refuelling design from the first cycle to the balanced cycle, improving the availability and load factor of a power plant, and thereby enhancing the economic benefits of the power plant.

A self-reinforcing profiled bar, a preparation method therefor and an application thereof. The self-reinforcing profiled bar comprises, in parts by weight, 100 parts of PVC profile and 5-120 parts of reinforcing lining material provided in a cavity of the PVC profile. The reinforcing lining material comprises the following components in parts by weight: 25-65 parts of styrene-based copolymer and 30-65 parts of reinforcing agent. The preparation method therefor comprises: first preparing a reinforcing lining material; and then, performing co-extrusion by using a main machine and an auxiliary machine designed perpendicular to the main machine, the main machine being used for extruding a PVC profile, the auxiliary machine being used for extruding the reinforcing lining material, and the main machine and the auxiliary machine performing extrusion simultaneously; and cooling and shaping after molding to obtain a self-reinforcing profiled bar. The self-reinforcing profiled bar can avoid the peeling problem between a reinforcing lining and the profile during transportation, installation and use, and the carbonization problem of the PVC profile caused by high temperature co-extrusion, and therefore has good production stability and molding stability.