473 results about "RS-232" patented technology

A system, method and computer program product provides for power line communications (PLC) over electric power lines includes a device mountable near an electrical distribution transformer (DT) to provide a high speed interface and communicates with one or multiple access devices, which provide low speed interfaces for analog signals or digital signals over RS 232, RS 485, optical, wireless and Ethernet. The device transmits data to / from these access devices over the electric lines to other repeaters over one or more wires of an electrical line or over multiple lines, and serves to strengthen and improve signal quality. Upon detecting a wire or line is having problems carrying data, the data is sent over other wires, and upon power line failures, wireless backup to mobile / GSM and WiMax networks is utilized. The device permits utilities and others to read electric meters, monitor the power quality of the distribution grid and detect power losses / failures / outages, and permits telecom service providers and others to provide a communications link to cell phone towers, WiFi Access Points and enable broadband Internet and telephony in rural, remote or sparely populated areas.

A transmitter system for wireless communication with implanted medical devices includes a transmitter circuit having a resonant network the resonant frequency of which is adjusted by a feedback circuit in order to minimize the current drain from the power source and maximizing the power source life. The transmitter system may be powered by a power supply block which uses commonly available RS-232 signals of a host computer as a raw power source, combined with a high value storage capacitor to provide power for the wireless medical data programmer. A feedback circuit monitors the charging current as well as voltage impressed across the storage capacitor in order to maintain the charging current at maximum level during the charging time and in order to stop the charging once the full charge of the storage capacitor has been reached.

A digital sampling playback doorbell system has two or more doorbell buttons and a central unit with solid state memory storage for multiple digitally sampled sound files. User assignment means are provided for assigning a particular sound file to a particular doorbell button. The digital sampling playback doorbell has computer interface of RS-232, or USB, or infrared wireless connection type and relies on computer installed software to download digitally sampled sound files stored in the computer hard drive to the memory of the digital sampling playback doorbell system central unit. The digitally sampled sound files stored in the computer hard drive are obtained by accessing a web site through the Internet or capturing sound through an audio computer connection to a microphone, CD player, radio broadcast or mass music storage device using software resident in the computer. Alternatively, an IPOD can be used as a source for sounds that can be transferred or sent to play on the doorbell. Such sound transfer can take place via a blue tooth communication link, or by a docking station that resides on the doorbell. Taking advantage of the intelligence contained within the IPOD, one can then select sounds or files that have been previously converted by either the IPOD or the computer that the IPOD was previously attached to, and send them to the doorbell.

The invention discloses a multi-protocol data converter for vehicle fault diagnosis, which comprises a vehicle connection interface and a RS232 interface connected with a microcontroller; a converter feed circuit and an a K line signal condition circuit, a CAN signal condition circuit and an ALDL signal condition circuit are respectively arranged between the microcontroller and the vehicle connection interface; a RS 232 signal condition signal is arranged between the microcontroller and the RS232 interface; the vehicle connection interface adopts a standard EOBD and an OBD II connector which meet ISO 15031-3 and SAE J1962 prescriptions; the microcontroller is embedded with a vehicle protocol automatic search module and a protocol diagnosis module. The protocol diagnosis module comprises a diagnosis processing submodule of ISO15765 / SAE J1939 protocol and a diagnosis processing submodule of SAE J1850 / ISO 9141 / ISO 14230 / KW1281 / ALDL protocol; an SAE J1850 signal alignment circuit is arranged between the microcontroller and the vehicle connection interface and used for realizing signal condition by two ways of J1850 VPW andJ1850 PWM; the microcontroller and each signal condition circuit are connected by the interface circuit of the microcontroller; at the same time, the invention also discloses a diagnosis method for the data converter.

A method, computer system and computer-readable medium for providing a communications connection between two electronic devices. The communications connection may be wireless. A first module may transmit an out put signal and a second module may receive and translate the output signal into a second format, wherein an electronic device communicatively linked to the second module may accept and read the input signal. The modules may each have hard connection fixtures that are fitted to conform to standardized form, fit and function rules to comply with general I / O channel standards such as USB, GPIB, or RS-232 standards.

The invention discloses a seedling transplanting system based on machine vision and consists of components of seedling transportation, machine vision identification, control and transplanting. A conveyor belt of the seedling transportation component can convey seedling plates to the transplanting positions and automatically convey after the completion of the transplanting; color images obtained from the machine vision system are used for detecting a plurality of appearance growth indicators such as the size, the number of leaves of the seedlings so as to comprehensively judge whether the seedlings are suitable for transplanting and meanwhile determine the location information of the seedlings to be transferred to the control system by a computer through a serial communication interface RS-232; then the PLC of the control system sends commands to an end effector to realize automatic transplantation of the seedlings through the control system; the end effector adopts shovel-shaped fingers driven by a linear cylinder and meets the seedling transplanting demand for seedling plates with different sizes through regulating the angle of fingers. The invention utilizes the vision system to obtain the growth and location information of the seedlings and realizes the transplantation through the control of the computer and the PLC.

In the present invention, a multi-person pose recognition system has been developed. This system includes a body pose detection module, a CC2420DBK board and a multi-person pose monitoring software module. The body pose detection module includes a triaxial accelerometer, a Zigbee chip and an 8-bit microcontroller. Several body pose detection modules and the CC2420DBK board form a Zigbee wireless sensor network (WSN). The CC2420DBK board functions as the receiver of the Zigbee WSN and communicates with a robot onboard computer or a host computer through a RS-232 port. The multi-person pose monitoring software monitors and records activities of multiple users simultaneously. The present invention provides a pose recognition algorithm by combining time-domain analysis and wavelet transform analysis. This algorithm has been implemented in the microcontroller of a body pose estimation module. Through the algorithm, the system can recognize seven body poses: falling, standing, sitting, lying, walking, going upstairs and going downstairs.

The invention provides a device and a method for intelligent terms conversion. The device comprises a DSP central processing chip, a memory module, a display and keyboard operation module and an uplink-downlink communication module, wherein the memory module, the display and keyboard operation module and the uplink-downlink communication module are connected with the DSP central processing modulerespectively, a front-end computer communication module is connected with a front-end computer through a RS-232 bus, a RS-232 communication module is connected with a plurality of sub-stations RTU bya serial expansion circuit, a term converter is arranged between the RTU and the front-end compute of a power communication system, the uploaded communication protocol of the sub-stations RTU are intelligently recognized by a fuzzy expert system, the format of the recognized terms are converted into a unified terms format, uploaded to the front-end computer, and uploaded to each level of workstation by the front-end computer. The invention has the advantages that operators can realize automatic recognition and conversion of terms of interconnected two parties by the device without knowing theterms types of the interconnected two parties, thus avoiding the error possibly brought by manual operation.

The invention discloses an embedded type integrated monitoring and maintenance system of a concrete block forming production line, which is based on a B / S (browser / server) mode network function structure model, comprises various on-site signal acquisition modules, an embedded type monitoring and maintenance unit and a remote monitoring diagnosis and maintenance center, and concretely comprises anARM9 main processor, a DSP (digital signal processor) slave processor, an Ethernet module, an USB (universal serial bus) camera module, a RS-232 / RS-485 level switch module, a data storage module, a program storage module, a video information module, an audio information module, an HPI (hardware platform interface) bus, a CPLD (complex programmable logic device) logic controller module, a local industrial personal computer (IPC) and a remote server. The invention has the advantages of low cost, strong portability, high configurability, complete functions, compact system and modularized design,and can meet the real-time requirement of high-speed data.

The invention discloses a false-detection resistant annular coil vehicle detector comprising an oscillating circuit module, a parameter setting module, a frequency measuring module, a central processing module, an RS-232 communication module and the like. The annular coil is connected with the oscillating circuit module of a vehicle detector through a coupling transformer of 1:1 to form a high-frequency oscillating circuit; the frequency measuring module is used for carrying out shaping and frequency division on an oscillating signal and feeding the finally-calculated signal frequency valve to a singlechip control system; a singlechip is used for sampling a measuring value of the frequency measuring module at regular time; the measuring value is subjected to filter processing and is detected by an embedded vehicle detection algorithm; a detection state is displayed by an LED; and the detection result can be output by a pulse manner or transmitted to an upper computer through an RS-232 bus. The invention improves the design of a threshold detection algorithm, uses a single threshold method for detecting the arrival of the vehicle and uses a flatness determination method for detecting the leaving of the vehicle. In addition, by adopting the invention, the arrival and leaving moments of the vehicle can be accurately detected, the phenomena of false detection caused by multiple false triggers are reduced, and the stability of the system is enhanced.

An intelligent communications bridge device (“Meterpod”) of a remote Supervisory Control and Data Acquisition (SCADA) system advantageously facilitates monitoring, reporting and control of public utility meters. The Meterpod is an intelligent gateway that installs onto existing metering and monitoring equipment and provides a wireless communications link from the remote equipment being monitored or controlled to the host computer or program tracking or controlling the device providing clear advantages over existing remote telemetry equipment in that it can (1) support any wireless communications protocol, including CDMA, GSM / GPRS, VSAT, and GPRS standards, (2) be installed and configured in minutes by regular maintenance personnel, and (3) provide control capabilities beyond the remote device by utilizing a broad array of additional interfaces (RJ-11, Ethernet, RS-232 and RS-485) that all come standard, supporting customer sites that cannot be monitored using existing fixed wireless or radio frequency (RF) monitoring solutions.

A method and system is provided for monitoring a respiratory signal by radio. The method includes the steps of: converting a change in electric resistance, which is caused by a change in abdominal circumference measured through a rubber waistband that is made of conductive rubber and is mounted on a lower garment of a testee during respiration, into a voltage signal, performing A / D conversion on the voltage signal, and transmitting the converted digital signal to a short distance by radio using a wireless communication protocol for ZigBee; and receiving the respiratory signal transmitted by radio, transmitting it to a computer unit by wire through an RS-232 port that is a serial communication port, and enabling a tester to monitor the respiratory signal through a screen.

An Ethernet Digital Storage (EDS) Card and satellite transmission system is provided for receiving, storing, and transmitting files including video, audio, text, and multimedia files, especially files received via satellite transmission. In a preferred embodiment, a satellite system includes a receiver using the EDS Card. A data stream is received by the receiver and then may be stored at the receiver or directly routed as TCP / IP packets. Received or stored data files may be multicast. The EDS Card also includes an HTTP server for web access to the card parameters and any files stored on the card. A DHCP on the EDS card provides dynamic configuration of the card's IP address. The EDS card also includes a PPP and modem processor for file transmission, reception, and affidavit collection. The EDS card also includes an event scheduler for triggering files at a predetermined time or at an external prompt. A command processor keeps a built-in log of audio spots played and responds to a command originator when a command is received. Files may be transmitted from the EDS card via a M&C port, an Ethernet port, or an auxiliary RS-232 port. Files may be received by the EDS Card from a data stream from a satellite, a M&C port, an Ethernet port, or an auxiliary RS-232 port. The EDS card also provides time shifting and may be used without a satellite feed as an HTTP-controlled router with storage.

To provide a graphic user interface, supported by HTML or Java script, to a personal computer (102) for the control of SONET / SDH network elements (106), an RS-232 port of a PC is used to establish a PPP session to a remote access server, RAS (122). The network element (106) is therefore configured to imitate a modem, and to route PPP packets into its related management system across an optical ring (12). The management system may include an intermediate network manager (120) and a DHCP server (124). Once legitimacy of the PC is established through the IP session, the PC is provided with an IP address to invoke the PC's IP stack. Subsequently, IP is communicated across the PPP session, with the RAS (120) configured to terminate the PPP session and forward IP packets into an IP network (128). IP packets (131), received at a web server (140), are converted into command line interface (CLI) messages 135 and are sent directly to the network manager (120) within an IP packet. The network manager (120) terminated the IP packet and re-packages the CLI messages into an optical carrier format (140) for relay to an addressed network element (106). The addressed network element (106), which is responsive to the CLI messages from a management perspective, then alters its set-up or functionality accordingly. Complex text-based CLI instructions are thus avoided by a field-based engineer through the use of a GUI supported by a PC having web-browser capabilities, with an typical architecture shown in FIG. 2.

The invention discloses an intelligent building video intercom system adopting finger vein recognition. The intelligent building video intercom system comprises a power supply, a power supply driving circuit, a finger vein collection circuit, an SD card, an SD card interface circuit, a singlechip, an LCD display circuit, an LCD display screen, an audio output circuit, a horn, an RS 232 / 485 communication conversion circuit and an access controller, wherein the power supply is connected with the singlechip through the power supply driving circuit, and the finger vein collection circuit is connected with the singlechip; the SD card is connected with the singlechip through the SD card interface circuit. The singlechip transmits visual intercom information to the LCD display screen through the LCD display circuit, and then the visual intercom information is connected with the access controller through the RS 232 / 485 communication conversion circuit. The access controller controls the opening and closing of a door, and the singlechip controls logical communication between finger vein recognition and the circuits. According to the access control way disclosed by the invention, the finger vein recognition technology is adopted, so that the intelligent building video intercom system can accurately recognize control of users on an access system so as to guarantee safety of communities.

The present invention is an access control door controller which utilizes three relays, 16 alarm inputs, tamper switch, a Weigand reader, a RS 232 reader and a IP core module to enable access control alarm monitoring, inter locking of doors and / or energy management for a room with the help of a software. The present invention utilizes a distributed communication (peer to peer) thus creating a door access controller System network with a truly distributed intelligence permitting exchange of information between all controllers which may be situated in a single site or over multiple sites connected on a common network. The full system can be configured on the widely used TCP / IP network thus avoiding the need for extensive wiring traditionally required for Access Control System. The controller, with its associated software can support multiple types of readers and can directly interface IP cameras for an integrated TCP / IP based Access Control / CCTV Solution.

The invention discloses synchronization method for variable frequency speed control of multiple motors controlled by computer based on network, and relevant distributed control system (DCS). Through RS-232 / field control bus converter, and field control bus, PC carries out serial data communication to each frequency converter, as well as reading, calculating and rewriting operational characteristic parameters, and control parameters of each frequency converter. Thus, the method implements distributed control for synchronous operation of multiple motors, making linear speeds of multiple rollers equal or keep certain speed ratio so as to guarantee normal continuous processing. The invention simplifies system structure, reduces cost of equipment, raises reliability of system and level of control and management as well as saves energy etc.

The invention provides an auto-management data link of micro unmanned aerial vehicles, which comprises a physical medium which is 2.4 to 2.483GHz microwaves, a link protocol which is ZigBee protocol is an international standard IEEE802.15.4-based wireless network protocol, and equipment formed by connecting a micro unmanned aerial vehicle model with a wireless module and an antenna, which are fixedly arranged in the unmanned aerial vehicle model, through a serial port RS-232. The wireless module consists of a ZigBee coordinator and a ZigBee router and adopts a half duplex communication mode; a data link network topology is a tree topology; and data link simulation software is the 14.5 edition of OPNET network simulation software. The data link allows the transmission speed of the unmanned aerial vehicles to reach 250kbps; the channel utilization rate can reach 90 percent; the packet transfer delay is 0.4s; and the throughput of the data link is 63kbps.

The invention discloses a central controller for a full-wire-controlled electric automobile and a control method of the central controller. The central controller comprises a double-core microprocessor, an analogue signal input interface, an analogue signal output interface, a switch signal input-output interface, a high-speed CAN (Controller Area Network) bus interface, an RS-232 serial interface, an Ethernet network communication interface and a USB (Universal Serial Bus) interface. The central controller is used for managing, coordinating, monitoring and recording each controller and each sensor of the full-wire-controlled electric automobile. The central controller collects driver operation input and gyroscope signals, the CAN bus obtains the motion states of a steering and driving motor, the signals and the states are analyzed and calculated, related data are stored into a file, and the CAN bus and the analogue signal output interface perform integrated control on a steering, driving and braking system, thereby finally achieving driving modes of front wheel steering, rear wheel steering, four-wheel steering, wedged steering and in-situ steering and a function of converting among the modes. The controller further has a function of communicating with a host machine, and has complete fault diagnosis and fault-tolerant processing functions.

A GPS data transceiver system capable of transceiving USB and / or RS-232 data between a host computer and a multi-mode GPS-receiver. The USB circuitry is incorporated into the multi-mode GPS-receiver and the RS-232 circuitry is incorporated into the multi-mode GPS-receiver or into an external power source, such as a battery pack. Depending on the data signal from the host computer, the data input / out device functions as a USB device or an RS-232 device.

A measurement endoscope system includes: an image pick-up device, an endoscope insertion portion to which a plurality of stereo measurement optical adaptors and a normal measurement adaptor are detachably attachable, a control unit for accommodating the endoscope insertion portion, a face mounted display for stereoscopically viewing a normal endoscope image or stereoscopically viewing the endoscope image as a pseudo stereo image, and the like. The control unit includes a CPU for controlling the execution of various functions based on a main program, a ROM, a RAM, a PC card, a USB port, an RS-232 port, an audio signal processing circuit, and a video signal processing circuit. The control unit can be connected externally to a PC. The measurement endoscope system allows taking image re-measurements under a correct measurement environment simple operation, with the re-measurements being performed promptly without consideration of the measurement environment. Thus, the operability of the system is improved and greatly expedited.

The invention provides a finger vein villa management system which utilizes a finger vein recognition technology and comprises a high-performance ARM board, a non-contact sensor which utilizes infrared to collect deoxidized hemachrome in a finger of human body, a display screen with a touch screen, a terminal which is composed of wireless transmission devices, a entrance guard control system and relevant personal computer (PC) servers. The high-performance ARM board is an ARM high performance board with a central processing unit (CPU) which is at least above ARM Cortex-A8 and possesses a floating point arithmetic function and an internal memory which is more than 512 mega byte. The high-performance ARM board comprises a universal serial bus (USB) interface, a general purpose input / output (GPIO) interface, a general serial port RS 232, a general serial port RS 485 and a network interface and is connected with the finger vein entrance guard through the USB interface. A card issuer is a PC computer which is connected with an entrance guard controller through the recommend standard (RS) 232 and is connected to a villa management server. The finger vein villa management system utilizes the finger vein recognition technology, possesses a non-contact identity to conduct verification, is high in safety performance and is convenient to use.

A switching device for RS-232 serial port and USB serial port is adapted to simultaneously provide a RS-232 serial port and a USB serial port for a micro-processor with a single USART. The switching device can automatically switch to select either of the RS-232 serial port or the USB serial port as a main interface for communicating with other external computer facilities and related peripheries. When one of the serial ports is selected as the main communication interface to communicate with one of external computers, the other one serial port thereof still can transmit signals from the micro-processor to another computer through its transmitting data pin (TXD).

The invention discloses an expressway weather monitoring system, relating to the technical field of traffic safety facilities. The expressway weather monitoring system comprises weather monitoring point devices arranged at each road section and district of the expressway, and control terminals arranged at the entrances of the expressway, wherein the weather monitoring point device comprises a main microprocessor, an environment temperature measurement module, a wind direction transducer module, an ice transducer module, a visibility measurement module, a CAN (Controller Area Network) bus transmission and receiving driver, an earth surface temperature measurement module, a clock chip, a GSM (Global System for Mobile Communications) / GPRS (General Packet Radio Service) remote communication module, a wind speed transducer module, an RS 232 communication interface circuit and a CAN bus; and the control terminal comprises a GSM / GPRS remote communication module, a monitoring display module and a PC work station. The invention has the advantages of reliable work, high cost performance and long service life, and is suitable for the application occasion of expressway with complicated environmental conditions.

The invention discloses a system for multi-signal collecting of welding process and movement control of a welding platform. The system is characterized in that a welding electric signal sensing device is used for collecting welding current and voltage, converting a collected electric signal into a voltage signal, and transmitting the voltage signal to a PC (personal computer); an electric arc sound collecting system is used for converting a collected sound signal into a voltage signal, and transmitting the voltage signal to the PC; a high-speed camera device is used for transmitting a shooting droplet transfer image signal to the PC through an industrial Ethernet bus; the serial communication is performed between a servo motor movement device and the PC through an RS-232 bus; the PC is used for receiving the data sent by the welding electric signal sensing device, the electric arc sound collecting device and the high-speed camera device, and storing the data into a local; the PC is used for controlling the movement of the servo motor movement device according to an instruction inputted by a user. The system has the advantages that the PC is used for remotely controlling the welding platform; multiple signals can be collected, so a good analysis platform is provided for the optimizing of welding technology and the studying of welding electric arc mechanism.

A hearing aid programming system with a host computer system including a program for programming a hearing aid. The host computer system includes a first communication interface for sending and receiving control and data signals. A hearing aid programming interface device is connected to the communication interface of the host computer system and includes a second communication interface for sending and receiving control and data signals. The hearing aid programming interface device also includes circuitry for electrically isolating the hearing aid to be programmed from the host computer. The first communication interface may be PCMCIA, USB, RS-232, SCSI or IEEE 1394 interfaces, which are arranged to send and receive serial data and control signals to the hearing aid programming interface device. The first communication interface may also be a wireless communications interface which wirelessly sends and receives control and data signals with the hearing aid programming interface device.

A hearing aid programming system with a host computer system including a program for programming a hearing aid. The host computer system includes a first communication interface for sending and receiving control and data signals. A hearing aid programming interface device is connected to the communication interface of the host computer system and includes a second communication interface for sending and receiving control and data signals. The hearing aid programming interface device also includes circuitry for electrically isolating the hearing aid to be programmed from the host computer. The first communication interface may be PCMCIA, USB, RS-232, SCSI or IEEE 1394 interfaces, which are arranged to send and receive serial data and control signals to the hearing aid programming interface device. The first communication interface may also be a wireless communications interface which wirelessly sends and receives control and data signals with the hearing aid programming interface device.

The present invention discloses a array type multi-point temperature monitoring system, including a plurality of monitoring devices, each of which is connected with a temperature sensor measuringline cable of 1000m at longest, each measuringline cable may drive at most 50 of single bus temperature sensors, the temperature sensor is capable of detecting the temperature information of the position where the temperature sensor locating, and the temperature data is transmitted to the monitoring device with a singlechip as a control kernel through a single bus data transmission protocol. The monitoring device has functions of data display, data memory, parameter enactment, overrun alarm, data transmission and the like. The monitoring devices combine a network through RS-485 communication bus, and are connected to a computer host by RS-485 / RS-232 protocol converters, and RS-232 bus to form the array type multi-point temperature monitoring system. The array type multi-point temperature monitoring system is used for situation with a large area multi-point temperature monitoring requirement.

The invention provides a method for remotely upgrading the program of the peripheral equipment of a single-chip microcomputer without an externally expanded memory. A master-slave device communication system, including a host device and multiple peripheral devices, in which a stable communication is established between the host device and each peripheral device through physical means (such as RS-232 / RS-485 / CAN bus, etc.) Connection, and the program design of the peripheral device adopts the BootLoader program to guide the main program to start. With the help of the storage space of the host, the communication channel between the peripheral device and the host is used. The two parties communicate according to the agreement agreed in advance, and the host recognizes it. And be controlled to realize the remote upgrade of the peripheral device program. The advantage of adopting the present invention is that there is no need to make any changes to the host hardware and peripheral hardware, and the whole mechanism is completed through the interaction of software and protocols, which has good versatility and strong expandability.