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60 results about "MAX232" patented technology
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The MAX232 is an integrated circuit first created in 1987 by Maxim Integrated Products that converts signals from a TIA-232 (RS-232) serial port to signals suitable for use in TTL-compatible digital logic circuits. The MAX232 is a dual transmitter / dual receiver that typically is used to convert the RX, TX, CTS, RTS signals.
Intelligent security protection monitoring alarm device for lab
ActiveCN102930688AComprehensive monitoringRealize centralized managementAlarmsLED lampLight-emitting diode
The invention discloses an intelligent security protection monitoring alarm device for a lab and relates to an alarm in response to more than two different accidents or abnormal situations, in particular to the intelligent security protection monitoring alarm device for the lab based on a global system for mobile communication (GSM) technology. The device comprises a master control circuit, an information acquisition module, an alarm module and a remote control module, wherein the master control circuit consists of a singlechip, an operating main program which is set by the singlechip, an MAX232 module, a key panel and a liquid crystal display screen; the information acquisition module comprises a smoke sensor, a carbon oxide (CO) sensor, a temperature sensor and an infrared sensor; the alarm module consists of a buzzer and a light emitting diode (LED) lamp; and the remote control module consists of a GSM-technology-based SIM300 mobile phone module, a voice controller and four relays K1, K2, K3 and K4. The intelligent security protection monitoring alarm device for the lab has remote control and automatic alarm functions and overcomes the defect that the current college lab cannot be monitored in real time to cause shortage in security protection monitoring of the lab.
Owner:HEBEI UNIV OF TECH
Voice-driven controller and identification and control method for an intelligent wheelchair
InactiveCN102298346AHigh control precisionFast operationProgramme controlComputer controlJoystickControl theory
The invention discloses an intelligent wheelchair voice drive controller and an identification and control method. The controller includes an audio circuit module, a voice processing circuit module, a MAX232 communication module, a DSP processor, a joystick circuit module, a speed regulation circuit module, Power supply circuit module, motor drive circuit module, fault detection circuit module, voltage and current detection circuit module, brake circuit module. Speech recognition adopts a specific human speech recognition method based on fuzzy support vector machine, which improves the recognition rate and enhances the anti-noise ability. The DSP processor controls the coordinated operation of the motor by outputting PWM waves. The invention proposes a master-slave intelligent wheelchair voice drive control scheme with a single-chip microcomputer as a voice information processor and a DSP as a drive controller. The advantage of the present invention is that it can be controlled manually or automatically by voice, and it is convenient to use.
Owner:JIANGSU UNIV OF SCI & TECH
Compass-based horizontal scanning ultrasonic distance measurement instrument
InactiveCN102004251AMeasurement stabilityAcquired information error is smallAcoustic wave reradiationDigital signal processingUltrasonic sensor
The invention discloses a compass-based horizontal scanning ultrasonic distance measurement instrument, which consists of a controller, a measuring device, a balancing device, a power device and a data transmission device, wherein the controller is connected with the measuring device, a driving circuit of the power device and the data transmission device; the controller is a component which has control function and consists of a singlechip or a field programmable gate array (FPGA) chip or a digital signal processing (DSP) chip; the measuring device comprises an ultrasonic sensor and a rotary table; the balancing device comprises a compass and a balancing vertical pendulum; the power device consists of the driving circuit, a stepping motor and a transmission device; and the data transmission device consists of a serial level switch circuit, and realizes the function by using a max232 chip. When used on the unstable plane, the compass-based horizontal scanning ultrasonic distance measurement instrument ensures the horizontal distance between the measured object and the distance measurement instrument, and has the advantages of strong applicability, wide and flexible distance measurement angle, convenience of assembly and the like. The compass-based horizontal scanning ultrasonic distance measurement instrument has high practical value and wide application prospect in the technical field of electronic mapping equipment.
Owner:BEIHANG UNIV
Fault diagnosis device for coal mine digging machine
InactiveCN101975672AExtended service lifeObserve the running status in real timeBus networksWireless transceiverTransceiver
Owner:CHINA UNIV OF MINING & TECH
Switchgear partial discharge detecting system based on ultrasonic signal
InactiveCN105510783AImprove anti-interference abilityEasy to useTesting using acoustic measurementsUltrasonic sensorFrequency spectrum
The invention provides a switchgear partial discharge detecting system based on an ultrasonic signal. The switchgear partial discharge detecting system comprises the components of a power supply module, a sensor module, a signal processing module, an AD conversion module, a single-chip microcomputer module, a communication module and an upper computer. The sensor module comprises an ultrasonic sensor and a preamplifier circuit and is used for acquiring an ultrasonic signal in an air medium. The signal processing module comprises an impedance matching circuit, a main amplifier circuit and an optoelectric coupler. The signal processing module realizes filtering, amplification and detection on the ultrasonic signal. The single-chip microcomputer module performs calculation on data and transmits the calculated data through a serial-port module. An MAX232 chip is utilized in the communication module. Ultrasonic data are finally transmitted to the upper computer by a communication circuit through a serial-port-to-USB line. The upper computer receives the signal which is transmitted from the single-chip microcomputer and performs empirical mode decomposition (EMD), thereby obtaining an intrinsic mode function. Then Hilbert transform is performed. A partial discharge signal is detected through analyzing a Hilbert spectrum.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING) +1
MC68HC908 series single-chip program recorder and control method thereof
InactiveCN101158934ASimple structureReasonable designElectric digital data processingResistance capacitanceThree-state bus
The invention discloses a program burner and a control method for a MC68HC908-series chip microprocessor, which comprises a circuit board, which equipped with a physical interface composed of a DB9 female contact and a 8-bit data line, and is characterized in that the burner also comprises a signal conversion and control circuit board composed of a RS232 interface chip MAX232, a three-state bus buffer driver 74HC368, and resistance capacitance elements thereof; wherein the R2in base pin of the MAX232 reads out the logic level delivered by RS232 to be sent to CMOS logical level through the DB9 female contact, and to be sent to the buffer driving chip 74HC368, and then to be sent to a FLASH storage area of the chip microprocessor through the 74HC368, so as to accomplish deletion and / or rewriting to the chip microprocessor programs. The invention is characterized in simple structure, convenient use and complete functions.
Owner:CHINA CNR LIMITED DALIAN ELECTRIC TRACTION R&D CENT
Intelligent well underground data collecting system based on high-temperature single-chip microcomputer
InactiveCN104632199APressure real-time monitoringStable jobSurveyConstructionsAlternating currentLine driver
The invention discloses an intelligent well underground data collecting system based on a high-temperature single-chip microcomputer. The intelligent well underground data collecting system is composed of an underground part and a ground part which are connected through a single-core steel armor cable. The underground part is composed of a sensor set and a data processing and transmitting circuit. The ground part is composed of a data receiver uploading circuit and a system host. 220V alternating current is remotely transmitted to the underground part to be supplied from the ground through the cable. The sensor set comprises a temperature sensor, a pressure sensor and a displacement sensor. Signals of the sensor set are converted into voltage signals after being conditioned, a simulation multiplexer HT506 is utilized for carrying out selective collection, the signals are converted through an A / D converter HT574 and then are transmitted to a microprocessor HT83C51, an HJ389 high-temperature pulse composite signal lone-line driver is adopted as a drive circuit to transmit the signals to the cable, an HJ388 pulse signal preprocessing module in the data receiver uploading circuit carries out signal conditioning on the transmitted underground signals, and the processed signals are transmitted to the microprocessor single-chip microcomputer and then transmitted to the host through an interface circuit MAX232. The pressure, the temperature and the valve displacement are monitored in real time, and long-term stable working under the high temperature environment of 175 DEG C can be achieved.
Owner:成都亿友科技有限公司
Portable bank card number and code storage machine
InactiveCN102467775AImprove securityReduce design requirementsCoded identity card or credit card actuationLiquid-crystal displayComputer module
The invention discloses a portable bank card number and code storage machine, which is characterized by comprising a data input module, a display module, a fingerprint identification module, a data treatment module, a data transmission module, a system resetting module and a clock circuit. The data input module is composed of a 4*4 keyboard; the display module is composed of an LGM12641BS1RLCD liquid crystal display module and a 74HC245 three-phase latch; the data transmission module is composed of an MAX232 and an RS232; the fingerprint identification module is composed of an MBF310 fingerprint sensor and used for sensing fingerprint information and outputting digital signals to a controller; and a processor is composed of an AT89C51 single chip computer. Trough the portable bank card number and code storage machine, the security of the operation of banking businesses via an ATM (Automatic Teller Machine) is greatly improved; and meanwhile, only a little fingerprint and bank card information is needed to be stored in the machine and the requirement on design is low, so that the portable bank card number and code storage machine has the advantages of low cost and easiness to spread to each family or person.
Owner:SHENYANG LIGONG UNIV
Ship-swaying dip angle measuring instrument
InactiveCN103383254AAccurate displayIntuitive displayMeasurement devicesTriaxial accelerometerMeasuring instrument
The invention relates to a ship-swaying dip angle measuring instrument. The ship-swaying dip angle measuring instrument comprises a microcontroller, a measuring circuit, a displaying circuit and a communication circuit, wherein the measuring circuit, the displaying circuit and the communication circuit are connected onto the microcontroller. The model of the microcontroller is ATMEGA48, the displaying circuit is a nixie tube dynamic display module, PC0-PC5 ports of the microcontroller are connected to the input end of the nixie tube dynamic display module respectively, and PD0-PD5 ports of the microcontroller drive three selection ports of the nixie tube dynamic display module respectively. The measuring circuit comprises a triaxial accelerometer chip, wherein the triaxial accelerometer chip is connected with the microcontroller through a single program initiation (SPI) bus, and the communication circuit adopts an MAX232 serial communication chip. The ship-swaying dip angle measuring instrument can measure transverse swing and longitudinal swing simultaneously, is high in measurement accuracy and can perform remote operation to measurement data.
Owner:PLA 63698 ARMY
Indicating and controlling device for intelligent accessing system of pharmacy
InactiveCN102509013AHighlight substantive featuresSignificant progressSpecial data processing applicationsShift registerHospital information system
Owner:SUZHOU IRON TECH
Adapter for 2-G identity card reader
InactiveCN101187970AAchieve matchingEasy to changeInput/output to record carriersSensing record carriersComputer terminalCard reader
The invention provides an adaptor applying to a reader of a second-generation identity card. The invention is characterized in that the adaptor (1) has a connection line with both a PS2 male head (1-1) and a PS2 female head and accesses, via the PS2 male head (1-1), the output end of PS2 is connected to a PC terminal; the adaptor comprises an MCU chip (1-3), an MAX232 chip (1-4) and a E2PROM chip (1-5); the MCU chip (1-3), with the E2PROM chip (1-5) and the MAX232 chip (1-4), respectively forms a group information memory and a serial interface circuit connecting with a second-generation identity card reader (2); at the same time, the MCU chip (1-3) is provided with interfaces respectively connecting with an input keyboard (3) and a computer terminal (4).
Owner:SHANGHAI POTEVIO
Serial modem type data photoelectric conversion device
ActiveCN104883222ALow costReduce laying costsFibre transmissionElectric digital data processingModem deviceData acquisition
Disclosed is a serial modem type data photoelectric conversion device, which includes a receiving end module (1), a modulation end module (2), an electro-optical conversion end module (3), a photoelectric conversion end module (4) and a demodulation end module (5). The receiving end module (1) comprises a plurality of MAX232 chips (6) and corresponding optocoupler members (7) connected with the MAX232 chips (6). The modulation end module (2) comprises a data acquisition member (8) and a data acceleration member (9). The data acceleration member (9) compresses the acquired data by the data acquisition member (8) through data transmission acceleration encoding. The electro-optical conversion end module (3) transmits an optical signal to the photoelectric conversion end module (4) via an optical fiber. The demodulation end module (5) comprises a data decoding member (10) and a data output member (11). The data decoding member (10) decodes and transmits data to the data output member (11). The data output member (11) transmits the data to an RS232 serial port.
Owner:NANJING DAQO AUTOMATION TECH
Remote drunk driving monitoring positioning system
InactiveCN103914947AAccurate judgmentTo achieve the purpose of remote monitoringAlarmsPositioning systemMAX232
A remote drunk driving monitoring positioning system is composed of an alcohol detection portion, a Beidou module portion, a GSM short message portion and a single-chip microcomputer control portion. The remote drunk driving monitoring positioning system structurally comprises an intra-vehicle alcohol concentration sensor, a driver alcohol concentration sensor, a single-chip microcomputer, a Beidou module, a GSM module, a DS18B20 temperature sensor, a buzzer, a power circuit, a liquid crystal display, an MQ-3 alcohol sensor and an MAX232 level translator. When drunk driving of a driver is detected, the buzzer can give out an alarm, and meanwhile, the single-chip microcomputer can control the GSM module to send driver drunk driving information and position information of the driver to a remote monitoring terminal. When the driver recovers to a safety driving state, the buzzer can stop. The remote drunk driving monitoring positioning system is simple to operate, high in adaptability, capable of conducting measurement easily and conveniently, accurate in result, high in automation and capable of conducting remote monitoring positioning of vehicles which are driven in a drunk mode.
Owner:NANCHANG UNIV
Electric heating type constant-temperature oscillator
InactiveCN105771761ASimple structureHigh precisionShaking/oscillating/vibrating mixersTransportation and packagingMicrocomputerCommunication interface
The invention relates to an electric heating type constant-temperature oscillator which comprises a main machine, a single chip microcomputer, a man-machine interface, an MAX232 communication interface, a temperature measuring sensor, a solid state relay (SSR), a heater, an electromagnetic relay and an oscillation motor, wherein the single chip microcomputer is connected with the main machine through the MAX232 communication interface; the man-machine interface, the temperature measuring sensor, the solid state relay (SSR) and the electromagnetic relay are respectively connected with the single chip microcomputer; the electromagnetic relay is connected with the oscillation motor; the solid state relay (SSR) is connected with the heater. The electric heating type constant-temperature oscillator of the circuit structure has functions of heating and oscillation simultaneously, and is simple in structure, reliable to work and low in cost.
Owner:ANHUI LVJIAN DETECTION TECH SERVICE CO LTD
Black box system used in electronic circuit experiment
InactiveCN101567142AImprove analysisImprove the ability to solveEducational modelsTelecommunications linkControl system
The invention provides a black box system used in an electronic circuit experiment. The system comprises a PC upper computer, a main control computer, a black box and operation software containing a black box database. The main control computer is a control system that takes a singlechip as a core and is composed of the singlechip, a radio frequency card reader, an MAX232 convertor and a mini-printer. The black box is internally encapsulated with a tested circuit module and a radio frequency card chip. The card reader in the main control computer reads the card number information of a radio frequency card built in the black box, the database of the black box is built in the PC upper computer, and the main control computer and the PC upper computer compare the card number information with the database through a communication link, thus obtaining the parameters built in the black box. In order to further promote the teaching reform of experimental courses, the invention provides an electronic circuit experiment and examination black box system to be used for 'circuit fundamental' and 'simulation circuit' course experiment and examination, thus creating a new path of experiment and examination.
Owner:HARBIN ENG UNIV
Full-automatic general analyzer control circuit
InactiveCN101178411AReduce mistakesGood repeatabilityMaterial analysis by optical meansBiological testingPeristaltic pumpMotor drive
The invention relates to a full automatic normal analyzer control circuit which belongs to the field of medical detection. A circuit part of the invention mainly consists of an MCU, a motor drive circuit, a peristaltic pump, a photosensitive resister, an amplification circuit, a solenoid valve, a work indicator light, a key, an amplification circuit, a photosensitive cell, a PC and a MAX232. The programmer design cycle of the invention is that: start a machine, initialization of the system, wait online, and self-inspection of the instrument after successful online. The solenoid valve has self-inspection orderly and can inspect by closing the machine if any difference is found. After self-inspection, the instrument starts cleaning procedure to clean a pipeline system. After cleaning, the instrument is on a standby state, waiting for an order, to enter into the procedures of cleaning, mixing evenly, sample introduction, setting of parameters, automatic operation and manual operation. Being used for the normal analyzer, the invention can greatly reduce the error by a human factor, improve the repeatability of detection obviously and ensure the quality control of the medical normal detection.
Owner:于复生
GPS-based two-freedom-degree sun tracking system
InactiveCN103425138AGuaranteed to receive sunlightHigh control precisionPosition/direction controlMicrocomputerCoupling ratio
The invention discloses a GPS-based two-freedom-degree sun tracking system in the field of a sun tracking system. The GPS-based two-freedom-degree sun tracking system comprises a GPS module; the signal output end of the GPS module is connected with the signal input end of a MAX232 chip; the signal output end of the MAX232 chip is connected with the signal input end of a single-chip microcomputer; the signal output end of the single-chip microcomputer is connected with the signal input end of a stepping motor driver; the signal output end of the stepping motor driver is respectively connected with the signal input ends of a vertical motor and a transverse motor; and the signal output ends of the vertical motor and the transverse motor are both connected with a concentrator through a holder. The GPS-based two-freedom-degree sun tracking system has the advantages of high control precision, high flexibility, easy operation, high coupling ratio, low cost, full automatic tracking, and green, environmental-friendly, energy-saving and healthy indoor illumination, thereby being suitable for the control of the concentrator.
Owner:潘琴
Remote switch system for oil field pipeline
InactiveCN102853144AReduce pollutionAvoid closingOperating means/releasing devices for valvesControl systemOil field
The invention relates to an oil field pipeline control system, in particular to a remote switch system for an oil field pipeline. The technical scheme is that an electric gate valve is installed at a key delivery point of the pipeline, a remote switch module is fixed outside the electric gate valve, and a signal is sent to the remote switch module through a mobile phone or a computer so as to control whether the electric gate valve is connected or not. The remote switch module consists of a network module, a MAX232 module, a 89S51 single chip microcomputer, a photoelectric coupler and a switch, wherein the network module is connected to the 89S51 single chip microcomputer through the MAX232 module, and the 89S51 single chip microcomputer is connected with the switch of the electric gate valve through the photoelectric coupler. The remote switch system for the oil field pipeline has the advantages that the remote switch module is added at the position of the electric gate valve, the signal is sent to the remote switch module through the mobile phone or the computer so as to control whether the electric gate valve is connected or not, the fact that an operator runs up to a scene to disconnect the gate valve personally is avoided, the working amount is decreased, the work efficiency is improved, and the environmental pollution is also reduced.
Owner:NANTONG TIANHUA HERUI TECH VENTURES
Zigbee wireless transmission and conversion device based on RS232 interface
PendingCN106685667AEasy transferEasy to collectData switching detailsEnergy efficient computingTransceiverRF front end
The invention provides a Zigbee wireless transmission and conversion device based on RS232 interface, which comprises a Zigbee wireless communication module, an RS232 communication interface module and a Zigbee power supply module located in a sealed shell. The Zigbee wireless communication module comprises a RF communication module and a RF front-end amplifier circuit wherein the RF communication module includes microprocessors and RF transceivers. The RS232 communication interface module comprises a MAX232 power level conversion chip unit and an RS232 interface circuit unit. The RS232 communication interface module is used for inputting the data signal to be sent by an external terminal device to the microprocessor of the Zigbee wireless communication module, processing the data signal and modulating by the RP-front-end amplifier circuit, and transmitting to the Zigbee network via RF transceiver. The RF transceiver is also used to receive a data signal to be received in the Zigbee network and then send it to an external terminal device to realize the data transmission of the wired data signal into the wireless data signal. The invention has the advantage of realizing a low power consumption and a low power consumption of a wireless data signal cost, a high confidentiality of two-way transmissions.
Owner:GUANGDONG UNIV OF TECH +1
Programmable direct-current voltage stabilizing power supply for optical fiber gyroscope testing
InactiveCN107990913AAchieve preservationImprove test efficiencyProgramme controlComputer controlGyroscopeCurrent sensor
The invention relates to a programmable direct-current voltage stabilizing power supply for optical fiber gyroscope testing. The programmable direct-current voltage stabilizing power supply comprisesa shell and a power supply control circuit board circuit arranged inside the shell. The programmable direct-current voltage stabilizing power supply is characterized in that the power supply control circuit board circuit comprises a microcontroller, a current sensor, an analog-digital converter, a direct-current voltage stabilizing switch electric field, a field effect tube and a Max232 serial port module. By adopting the programmable direct-current voltage stabilizing power supply, automatic switching can be achieved according to programs, and in addition, current of a gyroscope can be monitored in real time.
Owner:TIANJIN NAVIGATION INSTR RES INST
Main chip circuit control module for temperature real-time monitoring alarm control system
InactiveCN103809498AReal-time acquisitionImprove responseProgramme controlComputer controlData displayLED lamp
Provided is a main chip circuit control module for a temperature real-time monitoring alarm control system. The invention relates to a relay control circuit and an MAX232 serial communication circuit. A direct current circuit part of a relay circuit is communicated with a main control circuit of a single-chip microcomputer, and a guillotine circuit of a relay is communicated with a mains supply. An extraction circuit of temperature signals, an alarm circuit and a temperature value display circuit are communicated with the STC52 single-chip microcomputer of a main control chip. An LCD1602 liquid crystal display is connected with the STC52 single-chip microcomputer through a resister pack to finish corresponding data display tasks. A DS18B20 temperature sensor is connected with the STC52 single-chip microcomputer to be used for collecting temperature information. An LED lamp first is in parallel connection with a buzzer and is connected with an emitting electrode of a PNP triode to be used for finishing light-emitting warning and light warning tasks. The STC52 single-chip microcomputer is connected with a 9-pin serial port through an MAX232 chip to finish tasks of communication with a computer terminal. An accompanying diagram is a logic structure diagram. The main chip circuit control module is formed by 11, 24 and 25 in the diagram.
Owner:XUZHOU NIUER INTERNET OF THINGS SCI & TECH
A hard disk adapter plate and a computer device
InactiveCN109922116AImplement feedbackRealize centralized and unified controlTransmissionCommunication interfaceModem device
The invention discloses a hard disk adapter plate and a computer device. The device comprises a computer center and remote control equipment, the output end of the computer center is connected with anetwork management server; the network management server is also provided with a communication interface; The output end of the network management server is connected with the database and the application server. the output end of the network management server is also connected with remote control equipment; The output end of the remote control device is further connected with a man-machine interaction device. an embedded control system is further mounted in the remote control equipment; the output end of the embedded control system is connected with the high-speed scanning generator through the double-port RAM module; The output end of the high-speed scanning generator is connected with an MAX232 controller, and the input end of the embedded control system is connected with a modem through a two-way port, so that a user can conveniently complete the functions of eliminating computer faults, maintaining a server, transmitting files, working at different places and the like.
Owner:陈亚辉
LED nixie tube display system based on 8031 single-chip microcomputer
InactiveCN105390080AImprove the shortcomings of poor computing powerEasy to useStatic indicating devicesSingle chipInterface circuits
Provided is an LED nixie tube display system based on an 8031 single-chip microcomputer. The system comprises an 8031 single-chip microcomputer, an MAX7219 chip, an MAX232 chip, an MAX813L chip, an LED nixie tube, and a PC. The PC is connected to the MAX232 chip. The MAX232 chip is connected to the 8031 single-chip microcomputer. The 8031 single-chip microcomputer is connected to the MAX7219 chip. The MAX7219 chip is connected to the LED nixie tube. The MAX232 chip is adopted to achieve serial port communication between the PC and the 8031 single-chip microcomputer, complicated data processing is better conducted by means of the PC, and therefore the disadvantage of the poor operation capability of the single-chip microcomputer is overcome. The MAX7219 chip serves as an interface controlling display of the LED nixie tube, so a circuit is made to be simpler, the system is easier to use, and the working modes will be more flexible and diversified. Through the anti-interference design of the MAX813L chip, the system can function steadily and reliably for a long period of time.
Owner:HARBIN MIMI RICE IND TECH CO LTD
Computer display convenient to disassemble and assemble
InactiveCN109905421AImplement feedbackRealize centralized and unified controlTransmissionCommunication interfaceModem device
The invention discloses a computer display convenient to disassemble and assemble. The system comprises a computer center and remote control equipment, the output end of the computer center is connected with a network management server; the network management server is also provided with a communication interface; The output end of the network management server is connected with the database and the application server. the output end of the network management server is also connected with remote control equipment; The output end of the remote control device is further connected with a man-machine interaction device. an embedded control system is further mounted in the remote control equipment; the output end of the embedded control system is connected with the high-speed scanning generatorthrough the double-port RAM module; The output end of the high-speed scanning generator is connected with an MAX232 controller, and the input end of the embedded control system is connected with a modem through a two-way port, so that a user can conveniently complete the functions of eliminating computer faults, maintaining a server, transmitting files, working at different places and the like.
Owner:刘媛媛
Optical cable line blocking information sensor
InactiveCN106301569ADoes not affect normal operationAvoid blockingFibre transmissionElectrical resistance and conductanceAutomatic control
The optical cable line blocking information sensor belongs to the electronic, communication and automation control technology and the computer science field, and particularly relates to an optical cable line blocking information sensor. The invention provides an optical cable line blocking information sensor which does not affect normal operation of an optical fiber communication transmission network and can effectively monitor the optical cable line blocking information. The optical cable line blocking information sensor comprises a grasping type optical signal collector and a comprehensive control circuit; the optical cable line blocking information sensor is characterized in that a signal input end of a comprehensive control circuit is connected to a signal output end of a grasping type optical signal collector; the comprehensive control circuit comprises an NPN triode Q1, a PIC16F690 chip U1, an MAX485 chip U3 and an MAX232 chip U2; a base electrode of a Q1 is connected to a signal input end of the comprehensive control circuit through a resistor R8; a collector electrode of the Q1 is connected to a power supply VCC; an emission electrode of the Q1 is connected to one end of an resistor R9 and one end of a resistor R 16; and the other end of the R9 is connected to the ground.
Owner:吴晓明
Data acquisition control device for ring flat base
The invention discloses a data acquisition control device for an annular platform, which comprises a single-chip microcomputer 89C51(U15). The single-chip microcomputer 89C51(U15) which is connected with a USB interface circuit PDIUSBD12(U11), a serial port communication circuit MAX232(U19), a watchdog circuit DS1232(U20), a decoder circuit 74S139 (U17A), a D / A converter DAC7545(U10), a DC amplifier CA3140(U1) and a key entry circuit can generate electric stimulations. The data acquisition control device which has a simple structure and a low cost is easy in maintenance and high in reliability due to a modularized structure. As the data acquisition control device adopts the single-chip microcomputer, the data acquisition control device can improve the adaptive capacity to environment of the invention through modifying system programs, and therefore is easy to be transplanted and applied.
Owner:UNIV OF SCI & TECH OF CHINA
Computer based digital voltmeter
The invention provides a device of voltage meters, which comprises a power supply and a plurality of components; Direct current is used for measuring with -5 to +5V of range; a circuitry comprises minimization design of single-chip microcomputer for data acquisition circuit, an interface circuit for the single-chip microcomputer and the PC, a clock circuit for the single-chip microcomputer, a reset circuit; AT89S51 chip is adopted for a AT89S51 and AD678 chip is adopted for A / D conversion; RS232 serial port is used for communication with the PC and measured DC voltage data is transmitted; the design of RS232 interface circuit is adopted and chip Max232 is adopted for the interface circuit of AT89S51 and the PC; 9-pin serial port DB9 is adopted for RS232 interface of serial communication; only a pin receiving data and a pin sending data are needed for the serial port transmission data to realize direct connection between the pin receiving data and the pin sending data with the same serial port using line; two serial ports are connected or one serial port is connected with a plurality of serial ports; the digital voltage meter based on computer communication of the invention has the advantages that not only the transmission of measured data can be completed and but also the process of the measured data with the computer can be performed.
Owner:FANGXIA ENTERPRISE INFORMATION CONSULTING WUJIANG
High-heat-dissipation outer protection device for computer main chassis
InactiveCN109870981AImplement feedbackRealize centralized and unified controlTotal factory controlProgramme total factory controlModem deviceNetwork management
The invention discloses a high-heat-dissipation outer protection device for a computer main chassis. The high-heat-dissipation outer protection device comprises a computer center and remote control equipment; the output end of the computer center is connected with a network management server, and the network management server is also provided with a communication interface; the output end of the network management server is respectively connected with a database and an application server; the output end of the network management server is also connected with the remote control equipment; the output end of the remote control equipment is also connected with human-computer interaction equipment, and an embedded control system is also installed inside the remote control equipment; the outputend of the embedded control system is connected with a high-speed scanning generator by a double-port RAM module; the output end of the high-speed scanning generator is connected with an MAX232 controller; and the input end of the embedded control system is connected with a modulator-demodulator by a bidirectional port. The high-heat-dissipation outer protection device can be convenient for a userto complete functions such as elimination of a computer fault, maintenance of a server, file transmission, remote office and the like.
Owner:张维
A portable computer solar charging device
InactiveCN109922111AImplement feedbackSimple structureBatteries circuit arrangementsNetwork topologiesModem deviceNetwork management
The invention discloses a solar charging device for a portable computer. The system comprises a computer center and remote control equipment, the output end of the computer center is connected with anetwork management server; the network management server is also provided with a communication interface; The output end of the network management server is connected with the database and the application server. the output end of the network management server is also connected with remote control equipment; The output end of the remote control device is further connected with a man-machine interaction device. an embedded control system is further mounted in the remote control equipment; the output end of the embedded control system is connected with the high-speed scanning generator through the double-port RAM module; The output end of the high-speed scanning generator is connected with an MAX232 controller, and the input end of the embedded control system is connected with a modem through a two-way port, so that a user can conveniently complete the functions of eliminating computer faults, maintaining a server, transmitting files, working at different places and the like.
Owner:段佳慧
Medicine position indication control card
InactiveCN102508450AHigh speedImprove accuracyProgramme controlComputer controlShift registerComputer science
The invention provides a medicine position indication control card, which comprises a singlechip, a MAX232 serial communication chip, an 8-bit serial shift register and a medicine indication device, wherein the singlechip communicates with an upper computer through the MAX232 serial communication chip, and is connected with the 8-bit serial shift register; the 8-bit serial shift register is connected with the medicine indication device; the singlechip receives data of the upper computer according to an RS232 communication protocol through the MAX232 serial communication chip, and sends the data to the 8-bit serial shift register according to a sequence to control the medicine indication device; and the medicine indication device indicates the position of a medicine. The medicine position indication control card is low in cost, and can quickly, accurately and clearly indicate the storage position of the medicine, so that the medicine dispensing speed and the medicine dispensing accuracy of a pharmacist are improved, the labor cost is saved, and the work efficiency is remarkably improved.
Owner:SUZHOU IRON TECH
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