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439results about How to "No cost increase" patented technology

A low-cost and high-precision resistance measurement system and its measurement method

InactiveCN102288831ASmall linearity errorSmall output changeResistance/reactance/impedenceTransfer equationEngineering
A low-cost and high-precision resistance measurement system and its measurement method, including a current source, a multi-channel linkage switch, a voltage measurement circuit, a processor, and a display module. The processor switches the input resistance through the multi-channel linkage switch to a standard resistance R1 in sequence , R2, read the output of the voltage measurement circuit, and substitute into the transmission equation to solve, then switch the input to measure the resistance, obtain the value of the measurement resistance according to the transmission equation and the voltage measurement circuit output voltage; in the present invention, only the linearity of the voltage measurement circuit The error is small enough, and the error of the measured resistance is only related to the standard resistance, which theoretically eliminates the errors caused by the current source and voltage measurement circuits, such as differential processing circuits, A/D converters, etc. The low-cost current source and voltage measurement circuit can realize the purpose of measuring resistance with high precision; the standard resistance in the present invention must be used in the precision current source of conventional resistance measurement circuit, and no need to increase the cost.
Owner:钟小梅

Encryption system and encryption method for field-programmable gate array (FPGA) configuration data

The invention discloses an encryption system and an encryption method for field-programmable gate array (FPGA) configuration data. The system comprises a singlechip, an encryption unit and a configuration chip, wherein the configuration chip is used for sending the configuration data to a programming component; the encryption unit is used for controlling the singlechip to start executing the configuration data after the programming component receives the configuration data and then sending a random code to the singlechip; the singlechip is used for encrypting the random code and then sending the encrypted random code to the encryption unit; and the encryption unit is also used for encrypting the random code at the same time, comparing the encrypted random code with the random code encrypted by the singlechip and controlling the configuration data in the programming component to be executed if the random codes are the same. Compared with the prior art, the invention has the advantages that: the encryption system for the FPGA configuration data is simple, feasible, good in confidentiality and easy to upgrade, and is suitable for encryption of the FPGA configuration data with low cost; and because the external singlechip and a part of logic unit in an FPGA are used in an encryption circuit, excessive hardware cost is not increased.
Owner:DALIAN JIECHENG TECH CO LTD

Intelligent rainfall monitoring system and installation structure

The invention discloses an intelligent rainfall monitoring system and an installation structure, wherein the intelligent rainfall monitoring system comprises an embedded ARM processing unit, a temperature sensor, a humidity sensor, an infrared detector, a photo sensor, an AD converter connected with an ultrasound water level detector, a combined aural and visual alarm, a color lattice liquid crystal display, a solenoid valve, a USB transfer device, an upper computer processing system and a calendar clock, and adopts multiple communication modes of wireless, serial ports, USB, RF(radio frequency) or Bluetooth wireless meter reading; a power supply adopts solar energy, a storage battery or alternating current; and a touch keypad and a touch screen keypad are adopted. A main support is installed on a base, the upper part of the main support is connected to a solar-cell panel, and the lower part of the main support is connected to the color lattice liquid crystal display, the embedded ARM processing unit, a function keypad and the temperature and the humidity sensors; and the main support is connected to a rain accepting device and a measuring cup by a plurality of auxiliary supports, the photo sensor is arranged on the rain accepting device, and an ultrasonic sensor is arranged on the upper part of the measuring cup.
Owner:贵阳永青仪电科技有限公司

Method for remedying organism contaminated field by using bidirectional stirring injection method

The invention discloses a method for remedying an organism contaminated field by using a bidirectional stirring injection method. The method comprises the following steps: (1) flattening the contaminated field; (2) performing shallow layer ground hardening; (3) staking out in survey; (4) locating bidirectional stirring equipment in place; (5) moving a drilling rod of the bidirectional stirring equipment; (6) performing pre-stirring drilling; (7) drilling a drill rod, injecting a medicine and stirring bidirectionally, namely, injecting the medicine through an inner tube of a conveying pipeline, injecting a mixed solution of a catalyst and a buffer agent from a pipeline between the inner tube and the outer tube of the conveying pipeline, and mixing and stirring the medicine, the catalyst, the buffer agent and soil at the bottom of the conveying pipeline; (8) lifting up the drill rod through opposite stirring; and (9) moving the drill rod to a next pile site, and repeating the step (5) to (8) until the soil in all pile sites is remedied. By adopting the method, the loss of ground mixed medicines can be reduced, the reaction velocity and the reaction time can be effectively controlled, the problem that grout spills out and turns up from the ground surface can be effectively solved, and the remediation efficiency can be improved.
Owner:SOUTHEAST UNIV +2

Hydropower station optimized operation control method and system

The invention relates to a hydropower station optimized operation control method and system. The hydropower station optimized operation control method comprises the steps that a curve of a water head, the guide vane opening angle and the unit output is obtained, and the water head corresponds to a hydropower station unit, and a constant flow model or a constant load model is built according to the curve of the water head, the guide vane opening angle and the unit output; the constant flow model or the constant load model is solved so as to obtain a unit work control scheme; and operation of a hydropower station is controlled according to the control scheme. According to the hydropower station optimized operation control method, the actual curve of the water head, the guide vane opening angle and the unit output is obtained through in-situ experimental operation, and the mathematic model is built according to the curve, so that the obtained control scheme can meet the in-situ unit characteristics better; accordingly, the error is reduced, optimized operation of the hydropower station is achieved, and the guide vane opening angle, the unit output and other data can be used through data in existing unit automation control systems; and the cost is low, and the software cost and the hardware cost do not need to be additionally increased.
Owner:HNAC TECH

Safety access control method

A safety access control method includes the steps that a user selects the time when the user will arrive at a gate through a mobile phone; a sending module in the mobile phone sends user identification presorted in the mobile phone and the time when the user will arrive at the gate to a background server; the background server records the user identification and the time when the user will arrive at the gate; a two-dimension code generation module in the mobile phone generates a two-dimension code containing the user identification; after the user arrives at the gate, a two-dimension code reader corresponding to the gate reads the two-dimension code displayed by a screen of the mobile phone and sends the read information to the background server; the background server judges whether the information is authorized information or not, the user passes two-dimension code verification if the information is authorized information, and otherwise the user does not pass two-dimension code verification. By means of the scheme, safety of an access control system is improved under the condition of not increasing the device cost, privacy and timeliness of two-dimension code verification are ensured, and the access control system with multiple layers of verification is provided through the combination with other verification processes.
Owner:西安知行知识产权服务有限责任公司

Energy feedback control method for full electric vehicle

The invention provides an energy feedback control method for a full electric vehicle. The energy feedback control method includes the following specific steps that on the premise that an accelerator pedal is released and the vehicle is in a forward gear, whether an ABS is started or not is judged, and if the ABS is not started, the vehicle enters a feedback mode; the feedback mode selection step includes the procedures that after the vehicle enters the feedback mode, whether a brake pedal is trodden or not is judged, if the brake pedal is trodden, the vehicle enters a brake feedback mode, if the brake pedal is not trodden, the vehicle enters a sliding feedback mode, a vehicle control unit calculates feedback torque, and recycled energy is stored in a power battery; when the vehicle enters the brake feedback mode or the sliding feedback mode, whether the ABS is started or not is monitored in real time, and if the ABS is started, the vehicle quits from the feedback mode. The feedback torque is determined through the maximal receiving capacity of the power battery, the actual deceleration working condition of the vehicle and the feedback capacity of a motor, and the driving range of the full electric vehicle is prolonged as much as possible on the premise that vehicle safety is guaranteed.
Owner:BEIJING ELECTRIC VEHICLE

Wet type shotcrete machine

InactiveCN103216248ASolve the ratio problemReduce volumeUnderground chambersTunnel liningShotcreteReducer
Provided is a wet type shotcrete machine. The wet type shotcrete machine comprises a rack portion, a power portion, a driving portion, a stirring machine portion, a watering device portion, a quantitative screw conveyor portion, a control portion and a spraying mechanism portion. The rack portion is a main body supporting piece, and is integrally of a frame structure, a pair of tramcar wheels which make contact with rails are arranged on the lower portion of the rack portion, a speed reducer component of the stirring machine is arranged in the middle of the upper portion of the rack portion, the watering device portion is arranged on one side of the speed reducer component, the driving portion is arranged on the connection between the watering device portion and the speed reducer component, the power portion is arranged at one end of the rack portion and is connected with the driving portion, the quantitative screw conveyor portion is arranged at the other end of the rack portion, the control portion is arranged on one side of the quantitative screw conveyor portion, and the spraying mechanism portion is arranged on the lower portion of a stirring barrel of the stirring machine portion. The wet type shotcrete machine combines a function of stirring and a function of spraying into a whole, and is small in size, convenient to move and wide in applicability.
Owner:胡方志

Interactive method and interactive system for smart terminal and mobile phone

The invention discloses an interactive method and an interactive system for a smart terminal and a mobile phone. The method comprises the following steps that the mobile phone and the smart terminal are respectively connected with a network, and the incoming call of the mobile phone is diverted to the smart terminal; when the incoming call reaches the mobile phone, the information of the incoming call is sent to the smart terminal by the mobile phone, and the information of the incoming call is displayed on a display screen of the smart terminal by the smart terminal; and after a connecting instruction input by a user is received by the smart terminal, the connecting instruction is sent to the mobile phone, the incoming call is connected by the mobile phone, and the voice information of the mobile phone and the voice information of the smart terminal are shared to realize an interactive process. The conversation function of the mobile phone and the screen transmission share function of other smart terminals are realized by the interactive method and system, disclosed by the invention, and a user can answer the incoming call of the mobile phone by any equipment. The interactive method and system, disclosed by the invention have the advantages of low cost, convenience in use and strong practicability.
Owner:KONKA GROUP

Graphene coating agent and preparation method for producing super lead-acid storage battery negative electrode plate from graphene coating agent

The present invention discloses a graphene coating agent and a preparation method for producing a super lead-acid storage battery negative electrode plate from the graphene coating agent. The preparation method comprises: adding 20-120 parts by weight of graphene, 1-6 parts by weight of sodium ligninsulfonate (SLS), 5-10 parts by weight of a hydrogen evolution inhibitor, and 1000 parts by weight of water to a stirring tank, carrying out high speed and uniform stirring, adding 10-30 parts by weight of a binder and 500 parts by weight of water to another stirring tank, uniformly stirring, mixing the two mixtures, adding 300-1000 parts by weight of water, and carrying out high speed and uniform stirring to prepare the graphene coating agent; uniformly coating the graphene coating agent on both sides of a storage battery negative electrode generating plate, wherein the weight of the graphene coating agent is 0.25-2.5% of the gram weight of the negative electrode plate generating sheet; and closely wrapping with plate coating paper, flattening, pressing, laminating, compacting, carrying out cutting stacking, and drying for 2-4 h at a temperature of 60-100 DEG C. According to the present invention, the graphene coating agent is uniformly adhered on both sides of the lead-acid storage battery raw electrode plate, the adhesion reliability is high, the graphene coating agent is not easily shed, the battery charging time is reduced, and the specific energy, the cycle life, the high-current charge-discharge performance and the high power capacity of the battery are improved.
Owner:SINO INNOV SEMICON (PKU) CO LTD
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