32results about How to "Convenient collection and analysis" patented technology

The invention belongs to the technical field of physical and chemical test, and concretely relates to an apparatus for measuring the PCT curve of a material by using a solid state proton conductor, and a method thereof. The apparatus for measuring the PCT curve of a material by using a solid state proton conductor comprises a solid state proton conductor container, a DC source, a voltmeter, a transfer switch and an electric resistance furnace; when the material is measured, a DC voltage is applied to two electrodes of a proton conductor to measure the change curve of the current intensity of a circuit with the time, hydrogen in atmosphere electro-migrates to a material to be measured and capable of adsorbing hydrogen, and the hydrogen voltage can be calculated by measuring the electromotive force of a hydrogen concentration cell according to the principle of a conductor hydrogen concentration cell; and the content of hydrogen in the material can be calculated by measuring the change curve of the current according to a principle of charge conservation. The apparatus and the method enables the hydrogen pressure and the hydrogen content which are difficult to measure to be directly converted into electric signals, so it is easy to acquire and analyze data, thereby the apparatus and the method have the advantages of fast measurement, low cost and reliable data.

The invention discloses an ultrasound online measurement device for wearing capacity. The ultrasound online measurement device for the wearing capacity comprises a friction pair upper test piece, a friction pair lower test piece, an ultrasonic probe, an impulse transmission receiver, a digital oscilloscope and a computer; the friction pair upper test piece is located on the friction pair lower test piece, the ultrasonic probe is located on the bottom of the friction pair lower test piece and is connected with the impulse transmission receiver through a guide line, and the impulse transmission receiver is sequentially connected with the digital oscilloscope and the computer through the guide line; the impulse transmission receiver sends an electrical impulse to the ultrasonic probe to stimulate the generation of an ultrasonic wave, meanwhile, the ultrasonic probe sends back the received ultrasonic wave to the impulse transmission receiver, the ultrasonic wave is sampled and digitalized by the digital oscilloscope, and then self control and data storage in the sampling process are achieved through the computer to calculate the wearing capacity of a friction pair. The ultrasound online measurement device for the wearing capacity has the advantages that the device is non-destructive, the signal is stable, and sampling and the analysis are easy; the structure is simple, the operation is convenient, the effect is good, and the device has wide practicability.

This invention discloses one portable electron nose system based on USB interface, whose smell test and data collection system comprises gas sensitive sensor array with gas input end connected to two electrical valve through three-way tube and two electromagnetic valve; wherein, its signal output end is connected to the data collection card through signal adjust; the data collection card output end is connected to computer through USB interface; gas control system comprises data collection card with output end connected to gas pump of switch circuit; in work, the computer opens gas pump by data collection card according to program firstly to switch gas path to smell collection status to convert the smell into electrical signals by data collection card to computer for process; the collection time is to switch gas path to clear status to delete the smell molecule for next collection.

An SDN-based MPLS network control system and method. The SDN-based MPLS network control system includes: SDN controller, which is used to deliver IP forwarding table, label forwarding table and flow table to the switch. The flow table includes matching IP packets according to the destination IP and matching labeled packets according to the label. ;The switch includes a border switching router and a label switching router; the border switching router is used to receive the IP forwarding table, label forwarding table and flow table, and process the received message according to the flow table; the label switching router is used to receive the label forwarding table And the flow table, and process the received message according to the flow table. The technical scheme of the invention can make full use of the link resources of the whole network to achieve better network flow optimization.

The invention relates to a solid-phase extraction device. The solid-phase extraction device comprises a sampling pump, a pressure meter, a flow meter and a vertically arranged solid-phase extraction unit which are connected with one another in series, wherein the solid-phase extraction unit comprises a lower external adapter, an upper external adapter, a connector and two filtration tanks; the top of the lower external adapter is fixedly connected with the bottom of a first filtration tank; the top of the first filtration tank is detachably connected with the bottom of the connector; the top of the connector is detachably connected with the bottom of a second filtration tank; the top of the second filtration tank is fixedly connected with the bottom of the upper external adapter; the bottom of the lower external adapter and the top of the upper external adapter penetrate through a flow guide pipe; the first filtration tank, the second filtration tank and the connector are internally connected with one another; annular limiting slots are formed in the periphery of the inner wall of the connector; a non-return pressing sheet, a solid-phase extraction film and a support screen plate are arranged in sequence from top to bottom of each limiting slot. The solid-phase extraction device is easy to operate and convenient to transport, and is capable of preprocessing water samples on sampling sites.