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444results about How to "No cost increase" patented technology

Chromium-free Dyclo paint

The invention relates to a non-chromate Dacromet paint belonging to the metal anticorrosion technical field. The non-chromate Dacromet paint is prepared by the following steps that: after mixing a component B with a component C based on the weight ratio of 3-5:1.5-2.4, mixing the mixture with a component A based on the weight ratio of 1:16-32, stirring evenly and controlling pH value between 3.5 and 5.5; the non-chromate Dacromet paint has the characteristics of non-environmental pollution and non-public nuisance, high permeability, high adhesion, high antifriction, high weatherability, high chemical stability and so on. And the anticorrosion of the non-chromate Dacromet paint improves 7-10 folds of zinc electroplating.
Owner:SHANDONG UNIV

ATO (Automatic Train Operation) speed command optimization method of urban rail transit train

The invention discloses an ATO (Automatic Train Operation) speed command optimization method of an urban rail transit train. The method comprises the following steps: establishing a data module for optimizing an ATO speed command; establishing an ATO speed command combination evaluation module to evaluate superiority-inferiority of a current ATO speed command combination; establishing a multi-objective genetic algorithm NSGA-II (Non-dominated Sorting Genetic Algorithm II)-based ATO speed command energy-saving optimization method to determine an energy-saving ATO speed command so as to finally obtain an interval energy-saving ATO speed command set. According to the method, the optimal ATO speed command set of all operation intervals of a metro line can be obtained, the optimization time is greatly shortened, off-line optimization can be performed, on-line optimization can also be performed, the metro traction power consumption is reduced, and a large amount of electric energy can be saved for the urban rail traffic system of China each year.
Owner:NANJING UNIV OF SCI & TECH

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

Lead-acid storage battery partition plate and preparation method thereof

ActiveCN102623659AHigh tensile strengthMeet the requirements of large-scale production of mechanical automationCell component detailsGlass fiberFiber
The invention discloses a lead-acid storage battery partition plate and a preparation method thereof. The partition plate comprises a glass fiber serving as a main component and 10 to 20 percent of polyolefin resin fiber of which the melting point is between 100 and 200 DEG C. By adding polyolefin resin into the glass fiber, melting the polyolefin resin during drying and temperature raising, cooling and solidifying, and connecting the surrounding glass fiber, the tensile strength of the final partition plate is improved obviously, and a requirement on mechanical automatic large-scale production of storage batteries can be met; and indexes, such as an acid absorption rate, are not reduced remarkably, so that the cost is not increased basically.
Owner:ZHEJIANG CHANGTONG SCI & TECH

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

Product stowing device for automatic vending machine

Disclosed is a product stowing device for an automatic vending machine provided with a product rack (20) which has a plurality of product storage columns (21) provided in proximity in a row arrangement along a left to right direction, and a bucket (40) which is capable of receiving and passing a product (W) from a prescribed product storage column (21). The bucket (40) is provided with: a storing member (42) which is swingably disposed on a bucket main body (41) which is a frame body, wherein the storing member (42) is stored inside the bucket main body (41) under its own weight in a receiving orientation when in a normal state, and swings and releases a bottom surface allowing for delivery of the product (W) when a pin member (433) which is a component of the bucket (40) abuts a protrusion member (10), thereby placing the storing member in a delivery orientation; and a defining well (427) which urges the storing member (42) into a delivery orientation according to the weight of the product (W) when a product (W) is received from the product storing column (21).
Owner:FUJI ELECTRIC CO LTD

Low thermal radiation type fiber reinforced composite for lighting, daylighting panel and preparation method thereof

The invention relates to a low thermal radiation type fiber reinforced composite for lighting, a daylighting panel and a preparation method thereof. The composite comprises 50-80% of unsaturated polyester resin (UPR), 18-45% of glass fibers, 0-1% of an assistant, 1.0-2.5% of a curing agent, 0.3-1.0% of an accelerator and 0.1-10% of an infrared barrier, wherein the assistant is one or more of an antioxidant, an ultraviolet light absorber and a light stabilizer, and the infrared barrier is a nanometer oxide capable of absorbing or blocking infrared rays. Through reasonable design of the formulaof the low thermal radiation type fiber reinforced composite for lighting, blocking of infrared rays can be effectively achieved on the premise that the lighting rate completely satisfies using requirements.
Owner:SUZHOU MORE V COMPOSITE MATERIAL

Method for synthesizing theanine

A process for synthesizing theanine features that L-pyrrolidone carboxylic acid and anhydrous ethylamine directly take part in reaction in inert gas atmosphere at 60-100 deg.c and 6-12 MPa to obtain L-theanine. Its advantages are high output rate up to 38%, and short reaction time.
Owner:JINAN UNIVERSITY

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

Elevator

The invention provides an elevator, which can easily evaluate deterioration of a rope and a sheave in the elevator. In the rope type elevator 100, a car 1 and a counter weight 6 are connected by the rope 2. The sheave 4 attached with the rope is rotated / driven by a motor to lift the car. A position detector 9 measures a speed of the car from the time when it passes between shutting off plates 8, 8 installed so as to be separated by a predetermined distance and a clearance of the shutting off plates. In a memory means possessed by an operation part 16, a relationship of a car speed and deterioration of the rope or the sheave is stored and the deterioration of the rope or the sheave is determined with reference to the memory means.
Owner:HITACHI LTD

Adjusting method for the image quality

The invention is an image quality regulating method, detecting and calculating the brightness accumulated value of all effective pixel points on a functional hardware platform of detecting the whole image brightness, and calculating the whole brightness of image signals according to the brightness accumulated value, and determining a target brightness value and then regulating brightness value and simultaneously compensating image contrast. And the method can real-timely regulate the brightness according to the dynamic change of the displayed image brightness, and besides, correspondingly regulate the image contrast, thus enriching expression of grey levels and color levels and making the display image have high-contrast effect.
Owner:SHENZHEN TCL NEW-TECH CO LTD

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

Inner wall coating composition with multiple environmental improvement functions

The invention provides an inner wall coating composition with multiple environmental improvement functions, which mainly comprises the following components in part by weight: 35.0-40.0 parts of film-forming substance, 0.4-0.6 part of freeze-thawing stabilizer, 35.0-40.0 parts of color filler, 5-7 parts of coating auxiliary agent, 1-15 parts of bamboo charcoal and acceptable amount of water, wherein the film-forming substance is acrylic acid copolymer capable of stably complexing with bamboo charcoal particles; the freeze-thawing stabilizer is long-chain epoxyethane (EO) block fatty alcohol polyoxyethylene ether; and based on the total weight of the composition, the total content of volatile organic compounds (VOC) in the composition is not higher than 0.01wt%.
Owner:TIANCHANG YINHU PAINT

Multilayer coil component and method for manufacturing the same

Provided is a highly reliable multilayer coil component wherein migration of Ag constituting an inner conductor is controlled, problem of internal stress is relaxed without forming an air gap between a magnetic ceramic layer and an inner conductor layer, DC resistance is lowered, and disconnection of an inner conductor due to a surge is prevented from occurring easily. A metal film (20) is distributed over the surface of an inner conductor (2), so that an air gap does not exist on the interface (A) of the inner conductor (2) including the metal film (20) and a magnetic ceramic (11) on the periphery of the inner conductor, and the interface (A) of the inner conductor (2) and the magnetic ceramic (11) is in a dissociative state. An acid solution containing a metal is infiltrated from the side surface of a magnetic ceramic element via a side gap portion, i.e. a region between the side portion of the inner conductor and the side surface of the magnetic ceramic element, so as to reach the interface of the inner conductor and the magnetic ceramic on the periphery thereof, and thus the metal is deposited on the surface of the inner conductor.
Owner:MURATA MFG CO LTD

Dendritic macromolecular functional titanium dioxide micro particle toughening agent and epoxy resin

The invention discloses an amino-terminated dendritic macromolecular functional titanium dioxide micro particle toughening agent. The toughening agent is generated by reacting a dendritic macromolecule with titanium dioxide micro particle, wherein the center of adopted amino-terminated dendritic macromolecule is provided with an alkoxy estersil group, and the terminal of the amino-terminated dendritic macromolecule is provided with a plurality of amino groups; the molecular formula of the macromolecule is G6.0-PAMAM-(NH2)z; the dendritic macromolecules are distributed on the surfaces of the titanium dioxide micro particles and bonded with titanium dioxide through covalent bonds, and the content of the dendritic macromolecules is 3 to 20 wt% that of the toughening agent. By combining a material technology with an epoxy resin toughening technology, the invention provides the flexible epoxy resin material with good comprehensive performance and a preparation method thereof, so that the impact strength of an epoxy resin system can be improved by over 400 percent.
Owner:CHANGZHOU LOONG TOP NEW MATERIALS TECH

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

Stick figure generation method based on face photo

The invention relates to a stick figure generation method based on a face photo, belonging to the field of image processing. The method comprises steps of collecting a face database, and using an on-line open source database as a training object; training a face recognition and key point detection model by using the collected database; extracting feature points from a real face picture; sketchingthe input picture; positioning and segmenting the face, five sense organs, hair, clothing and the like based on the extracted feature points; smoothing, enhancing, graying and binarizing the segmentedimage; and recombining the processed components to form a final result. Compared with the prior art, the method has the advantages that the five sense organs are positioned more accurately; a large number of samples are not needed for training, and less picture data is needed; the training time is shorter, the requirement for hardware is low, no cost increases; the training model is very sufficient, and error-prone details are avoided; and the method can be provided to chocolate 3D printers for printing and can be widely used.
Owner:哈尔滨拓思科技有限公司

Method for determining rotating speed of main shaft expanded by cold rolling

A method for determining the rotation speed of mainshaft used for cold rolling of a ring blank includes such steps as measuring the external and internal diameters of ring blank and the radius of main rolling wheel, calculating the wall thickness of ring blank, setting up the feeding speed to be 2, inserting said values in a disclosed equation to obtain a function, drawing the function graphics of diameter increasing rate, finding out a N value where the relative difference between two diameter increasing rates for two curves is less than 1% at the position with same wall thickness, and determining the N value is the target rotation speed.
Owner:WUHAN UNIV OF TECH

Vehicle safety device

The safety device for the vehicle includes the hood coupled with the vehicle body through a coupling tool connected fast to the hood tail and extending backward, wherein the coupling tool is arranged able to elongate with thrusting-up of the hood by an actuator, and is furnished with a lock part having a rod and an inserting hole to admit insertion of the rod and engaging the inserted rod with possibility of only drawing out, and by rotating the rod round its axis, the locked condition of the rod by a screw of the lock part can be disengaged. The present invention provides a safety device for a vehicle embodied at low cost and capable of securing good field of view by descending a hood.
Owner:MAZDA MOTOR CORP

Display device, electronic machine and diplsy device mfg. method

To provide a display device, an electronic apparatus, and a method of manufacturing the display device, which are capable of preventing growth in size of a production line and the resultant increase in cost without deteriorating display quality, by using an elongate or contractile substrate, there is provided a display device in which an element layer having electrodes and a photo-functional layer is formed on a substrate, the substrate is made of an irreversible elongate material, and the element layer is made of an elastic material and provides an adhesive property to the substrate.
Owner:SEIKO EPSON CORP

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

Composite positive electrode lithium supplement additive and preparation method and application thereof

The invention provides a composite positive electrode lithium supplement additive and a preparation method and application thereof. The composite positive electrode lithium supplement additive comprises a positive electrode lithium supplement agent and a conductive carbon layer located on the surface of the positive electrode lithium supplement agent, the median particle size D50 of the positive electrode lithium supplement agent is less than 1 mum. The surface of the small-particle-size positive electrode lithium supplement agent (the median particle size D50 is less than 1 mum) is coated with the conductive carbon layer, so that the rate characteristic of the material can be improved, the lithium supplement agent material can be applied to lithium iron phosphate in a non-voltage matching interval, the charge capacity of the lithium supplement agent is promoted, and efficient lithium supplement is realized.
Owner:HUBEI JINQUAN NEW MATERIALS CO LTD

An elevator apparatus

InactiveCN103523635AShorten the stopping distanceIncrease costElevatorsAutomotive engineering
The invention provides an elevator apparatus. The elevator apparatus cannot result in increase in cost and may shortens the stop distance of an elevator lift car in emergency braking. The elevator apparatus comprises a guiding device and a guiding roller (17). The guiding device is disposed on the elevator lift car or a counterweight and is moved along a guide rail (3) so as to guide the ascending and the descending of the elevator lift car or the counterweight. The guiding roller (17) is disposed on the guiding device and is rotated on a surface of the guide rail (3). In the elevator apparatus, the guiding device comprises a power generator (20) for generating power by rotating a rotating shaft. The power generator (20) is connected with the guiding roller (17) such that the rotation of the guiding roller (17) is transmitted to the rotating shaft of the power generator when the elevator lift car or the counterweight ascends or descends.
Owner:HITACHI LTD

Rolling component and manufacturing method thereof

A rolling component formed by carrying out spheroidizing annealing, processing, carbonitriding, and finishing on steel material containing, by mass, 0.90% to 1.10% carbon, more than 0.35% and up to 0.70% silicon, less than 0.80% manganese, 1.85% to 2.50% chromium, and oxygen in the amount of 12 ppm or less. On the surface, the mean quantity of carbon is 1.20% to 1.50% by mass and the mean quantity of nitrogen is 0.10% to 0.60% by mass. There are at least 700,000 deposits with particle diameter of 0.1 [mu]m or more per square millimeter of the surface. Said deposits have a mean particle diameter of 0.6 [mu]m or less and a surface area ratio of 10% or more. The volume fraction of retained austenite on the surface is between 25% and 45%. The surface hardness is Hv 750 or more. The volume fraction of retained austenite inside the rolling component is 20% or less.
Owner:JTEKT CORP

Digital keying circuit and keying equipment

The invention discloses a digital keying circuit and keying equipment. The circuit comprises a key rheostatic unit and an analog-digital conversion module, wherein the resistance value of the key rheostatic unit correspondingly changes when any of different keys is correspondingly pressed or multiple keys in different combinations are pressed at the same time; one end of the key rheostatic unit is connected with a power supply, and the other end of the key rheostatic unit is grounded; the analog-digital conversion module is connected with the key rheostatic unit and is used for acquiring the corresponding voltage values corresponding to different resistance values at the connection part, and the corresponding voltage values are used for judging the state of the key. The keying equipment is provided with the digital keying circuit. According to the digital keying circuit, the state of the key is judged by detecting the variation of the voltage value, so that the problem of mistaken detection is effectively avoided. The keying equipment provided by the invention effectively avoids the problem of a Ghost key.
Owner:QINGDAO GOERTEK
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