44results about How to "Quick response" patented technology

An electric heating driver with an ultra-fast response speed is characterized in that a polymer film and a silver nanowire/binder layer attached to the polymer film form a double-layer structure, anda conductive electrode is coated on the silver nanowire/binder layer at one end of the double-layer structure and used for connecting a wire; and one end coated with the conductive electrode is cut from the middle in the longitudinal direction to form a U shape; According to the invention, the silver nanowire with excellent conductivity is combined with the polymer film with a large thermal expansion coefficient, and the double-layer electric heating driver is formed under the action of the binder, so that the problems of slow response and high driving voltage of the electric heating driver are solved; and the manufactured mixed silver nanowire electric heating driver has excellent response speed, only 0.08s is needed for 360-degree bending, and only 1V drive voltage is needed.

The invention discloses a flexible MEMS flow velocity sensor based on an amorphous germanium thermal resistor. The flexible MEMS flow velocity sensor comprises a flexible substrate, a support film, an insulation protection layer, a suspended film heating thermal resistor and suspended film temperature measurement thermal resistor pairpositioned between the support film and the insulation protection layer on a heat insulation cavity, a substrate temperature measurement thermal resistor pair for measuring the temperature change of environmental fluid and between the support film and the insulation protection layer on the flexible substrate outside the heat insulation cavity; the support film is partially suspended on the flexible substrate, the support film is connected with the insulating protective layer, and the suspended film heating thermal resistor, the suspended film temperature measurement thermal resistor pair and the substrate temperature measurement thermal resistor pair are respectively connected with the outside through corresponding leads and pins. Amorphous germanium semiconductor thermal resistance materials are adopted, the structure is simple, wide-range flow velocity measurement (10<-2>-10<2> m/s) and direction finding can be achieved, only a low constant temperature difference needs to be kept between the working temperature of the thermal resistor and the temperature of fluid in the working process, and therefore power consumption is low.

The embodiment of the invention provides a cooling fan control method and system of a traction motor and a freight train. The control method comprises the following steps that a central control unit obtains the state of a traction inverter, the state of the cooling fan and cooling index information; according to the state of the traction inverter, the state of the cooling fan and the cooling index information, whether a cooling fan operation request is sent out or not is judged; wherein the central control unit obtains the state of the traction inverter from a traction control unit, obtains the state of the cooling fan from an electric switch of a cooling fan power supply line, and obtains the cooling index information from a system where a cooling index information acquisition device is located. A control system is used for realizing the control method. The freight train comprises the control system. According to the embodiment of the invention, the technical problems of low control efficiency and slow response of the cooling fan due to the fact that the cooling fan is commonly controlled by a traditional central control unit (CCU) and a traction control unit (TCU) are solved.

The invention relates to an intelligent home control method, device and system. The method comprises the following steps: sending a broadcast message; receiving the response of equipment to the broadcast message which indicates that a user goes home according to detection, and keeping the working mode of the equipment in a go-home mode. According to the intelligent home control method, device and system, the broadcast message is sent, and the working mode is automatically switched to the go-home mode after the equipment receives the broadcast message without manual setting of the user, so that the efficiency is high, and time is saved.

The invention discloses an overcurrent protection circuit of a high-voltage voltage stabilizer. The overcurrent protection circuit comprises a differential pressure clamping unit and a current comparator, wherein the differential pressure clamping unit is connected between a high-voltage input end PVIN and a high-voltage ground FGND and is composed of PMOS transistors PM1 and PM2, NMOS transistorsNM1, NM2, NM3 and NM5, a Zener diode D0, a P-channel transverse double-diffusion MOS transistor PLDM1, an isolated high-voltage N-channel transverse double-diffusion MOS transistor PLDM1 and isolatedhigh-voltage N-channel double-channel MOS transistors NLDM1 and NLDM2 through connection, the differential pressure clamping unit is used for clamping a differential pressure within 5V; and the current comparator is formed by connecting a PMOS (P-channel Metal Oxide Semiconductor) tube PM3-PM6 and an NMOS (N-channel Metal Oxide Semiconductor) tube NM6-NM15, and is used for triggering and outputting an overcurrent protection signal by comparing input currents at the two ends of the PVIN_SNS and the SW_SNS. According to the overcurrent protection circuit, the MOS tube is connected with a smallnumber of resistors and Zener diodes to form a clamping circuit with ESD protection and voltage difference limiting functions, use conditions and reliability guarantee are provided for a 5V device, meanwhile, the occupied area and power consumption of the circuit are reduced, and the overcurrent protection circuit is matched with a common-gate amplifier containing source input, so reliability of the circuit is improved; and the response speed of overcurrent protection is also improved.

The invention relates to a platform screen door safety protection control method and a platform screen door safety protection control system. The platform screen door safety protection control method comprises the steps that: a platform screen door PEDC receives a door opening signal from a signal system on a train and sends the door opening signal to a monitoring unit so as to make the monitoring unit operate; the monitoring unit shoots an image signal of a gap between the platform screen door and the train, and respectively sends the image signal to a storage module and an image analysis module in a host; and the platform screen door PEDC sends a platform screen door locking signal to the monitoring unit when detecting that the platform screen door is closed and locked, so that the image analysis module judges whether an obstacle exists in the gap between the platform screen door and the train according to the image signal, if so, sends an alarm signal to an audible and visual alarm and a display, and if not, sends a safety signal to the platform screen door PEDC. The platform screen door safety protection control method and the platform screen door safety protection control system are used for monitoring the gap between the platform screen door and the train in real time through the monitoring unit, are suitable for both curve and straight line station platforms, and have high detection accuracy and fast response speed.

The invention discloses a pressure balance electromagnetic flowmeter, a flow control system and a flow control method. The flowmeter comprises a central processing unit, and a communication module, apulse output end and a current output end which are connected with the central processing unit. The pulse output end and the current output end are respectively configured as a switchable valve opening input end and an analog control output end. The system comprises an electromagnetic flowmeter, a valve and an upper computer. The upper computer is used for setting target flow and an error band. The method comprises the steps that S1, when the pressure of a current pipeline needs to be increased, the electromagnetic flowmeter outputs a control signal larger than the current analog quantity, andotherwise, the electromagnetic flowmeter outputs a control signal smaller than the current analog quantity; S2, the valve adjusts the opening degree of the valve according to the analog quantity andfeeds back the adjustment result to the electromagnetic flowmeter; S3, when the electromagnetic flowmeter judges that the difference between the current pipeline flow and the preset target flow is within the preset error band, a current valve feedback signal is output to the valve as a valve control signal; and S4, when the pressure of the current pipeline changes, the steps are repeated.

The invention provides an oil injector with double air inlet channels. The oil injector comprises an oil injector body, a first oil inlet channel, a second oil inlet channel, an electromagnet, an armature, an armature rod, a ball seat, a control valve seat, a first spring, a ball valve, a throttling hole plate, a control piston, a second spring, an ejector rod, a needle valve, a needle valve body, a transition block, a first oil inlet hole, a second oil inlet hole and an oil injection nozzle, wherein the oil injector body, the transition block and the needle valve body are assembled from top to bottom into a whole the first oil inlet channel and the second oil inlet channel are positioned in the oil injector body, the transition block and the needle valve body; in the down direction, the first oil inlet channel and the second oil inlet channel both communicate with the oil injection hole channel of the oil injection nozzle; and in the up direction, the first oil inlet channel and the second oil inlet channel correspondingly communicate with a first oil inlet throttling hole and a second oil inlet throttling hole which are formed in the throttling hole plate. The oil injector can be applied to a diesel engine fuel oil supply system of which the oil injection rate is variable and adjustable at any time; the injection demand at different pressure can be met; and accordingly, the engine combustion heat release rate can be improved and the emission can be reduced.

The invention discloses an information processing method and device used for solving the technical problem that in the prior art, the responding time for responding to access of an electronic device is long. The information processing method is applied to a first electronic device, a first management program for managing the first kind of electronic devices is at least installed in the first electronic device, and when a second electronic device is connected with the first electronic device, an input and output request packet sent to the first electronic device by the second electronic device is obtained; equipment identification information in the input and output request packet is obtained so that whether the second electronic device belongs to the first kind of electronic devices or not can be judged according to the equipment identification information, and a judgment result is obtained; when the judgment result shows that the second electronic device belongs to the first kind of electronic devices, a first management interface of the first management program is output.

The invention discloses a grid UI control interaction method and system. The grid UI control interaction method comprises the following steps: A, establishing a connection between a mobile terminal and an intelligent equipment end, and displaying a plurality of response controls having unique IDs on interfaces of the mobile terminal and the intelligent equipment end at the same time; B, when a user operates the response controls of the mobile terminal, packaging messages according to a communication protocol between the mobile terminal and intelligent equipment, and sending the packaged messages to the intelligent equipment end; and C, after the intelligent equipment end receives the messages, distributing the received messages to corresponding response controls of the intelligent equipment end according to the unique IDs of the response controls in order to finish corresponding operation. According to the grid UI control interaction method and system, operation on the response controls of the mobile terminal is synchronized to operation on the response controls of the intelligent equipment end based on the unique IDs of the response controls, so that one-screen operation can be realized. Meanwhile, the aim of operating the intelligent equipment end through the mobile terminal is fulfilled. Moreover, the quantity of transmitted data is small, and the response speed is high.

The invention discloses a numerical simulation-based multi-channel pool control parameter optimization algorithm, which comprises the following steps of: carrying out step-by-step gradient method optimization on a characteristic channel, wherein the initial value of a gradient method is found by using a random golden proportion binary method, and then an improved staged index change gradient algorithm is carried out for optimization; for control parameter selection of other channels, after control parameters are always obtained in a characteristic channel according to a random golden proportionbinary methodand a gradient method in the optimizing process, multiplying a fixed weight by the PI control parameters of the characteristic channel in real time to directly assign values to the other channels; and after the final average performance index of the multi-channel pool reaches the expectation, stopping optimizing, and outputting control performance parameters meeting the expectation. According to the invention, the method solves the problem that PI parameters in an automatic operation system of a channel system are difficult to determine; and the obtained controller is helpful for improving the response speed of a channel system and enhancing the control stability, and a user can adjust a control target according to the characteristics of each project.

The invention discloses a web page accessing method and a client. The web page accessing method includes that the client acquires a first uniform resource locator URL according to a web page accessing request; the client updates the first URL to form a second URL, wherein the second URL comprises one or more pre-stored data items pre-stored at the client and is used for loading information corresponding to the pre-stored data items in a web page to be accessed; the client accesses to the web page through the second URL. The web page accessing method and the client solve the technical problem of overload of a network server due to the fact that the prior art acquires the web page information through the network server when accessing to the web page and realize to transmit the web page needed information to the web page to be accessed from the client through the URL so as to lower the network server load.

The invention relates to a preparation method and an application of a carbon monoxide (CO) near-infrared fluorescent probe. The structural formula of the probe is shown in the description. The preparation method provided by the invention is characterized in that the fluorescent probe is synthesized by taking a benzopyran nitrile-xanthene dye, triethylamine, allyl chloroformate and the like as rawmaterials. The fluorescent probe is a carbon monoxide fluorescent probe with near-infrared emission and large Stokes shift. The fluorescent probe has a very high sensitivity to CO, and the fluorescence intensity is enhanced by 21 times; the fluorescent probe has a very high selectivity to CO and is not interfered by other active oxygen, active nitrogen, various ions, biological mercaptan or aminoacids; the fluorescent probe can quickly react with CO, and the response time is within 10 min; and the fluorescent probe is applied to detection of the content of carbon monoxide in living cells.