CN102420874A - Field programmable gate array (FPGA)-based Internet of things accessing module - Google Patents
Field programmable gate array (FPGA)-based Internet of things accessing module Download PDFInfo
- Publication number
- CN102420874A CN102420874A CN2011104074937A CN201110407493A CN102420874A CN 102420874 A CN102420874 A CN 102420874A CN 2011104074937 A CN2011104074937 A CN 2011104074937A CN 201110407493 A CN201110407493 A CN 201110407493A CN 102420874 A CN102420874 A CN 102420874A
- Authority
- CN
- China
- Prior art keywords
- fpga
- module
- interface
- things
- internet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention discloses a field programmable gate array (FPGA)-based Internet of things accessing module, which belongs to the field of computer networks. The FPGA-based Internet of things accessing module comprises an FPGA chip, a network chip, a storage module, a configuration module and an external interface module, wherein the external interface module is provided with a sensor interface, a wireless communication interface and a network interface, and is connected with a universal electric quantity mutual inductor, a temperature sensor and a humidity sensor to finish the data acquisition of a plurality of environments. The FPGA-based Internet of things accessing module realizes the wireless transmission of acquired information and environmental parameters and simultaneously can perform wired transmission through the Ethernet and universal communication interfaces. Various devices of the FPGA-based Internet of things accessing module can be formed by simply customizing the sensor interface and transmission application configuration. The module has high universality, a simple structure and low cost; and difficulty and cost in the development and production of the FPGA-based Internet of things accessing module are greatly reduced.
Description
Technical field
The present invention relates to a kind of FPGA Internet of Things AM access module that realizes multiple information gathering, this module has the Universal, modular Interface design, belongs to computer network field.
Background technology
Along with popularizing of Internet technology, and the developing rapidly of embedded technology, sensor technology and Radio Transmission Technology, information network is increasing to the influence of people life style, and is deep in the middle of each application further its influence power of performance.Information network technique is extended people's the perception world extensively, thereby the information on the various logic and the actual physical world are merged, and has satisfied " omnipresent " demand that people's information is obtained, and is changing people and natural interactive mode.
Internet of Things is the important component part of generation information technology; It, gets up any article and Internet connection by the agreement of agreement through various information sensing equipment; Carry out information exchange and communication, to realize a kind of network of intelligent identification, location, tracking, monitoring and management.Internet of Things is " the Internet that the thing thing links to each other ", and its core and basis remain the Internet, and Internet of Things is the information network of on the basis, the Internet, expanding and extending.Internet of Things constantly obtains and uses and environmental information through widely applying various information acquisition sensors and equipment, supports that people implement Based Intelligent Control to object.In fact, Internet of Things is the efficient product that merges in sensing network, cordless communication network and the Internet, is the system of the efficient fusion of information system and physical system.
The Internet of Things access way is diversified.Like the PSTN of wide area, the Internet, cordless communication network etc., the Internet of Things access device comprises collecting device, trunking and convergence device.These equipment integrate multiple access means, the unified key equipment that is interconnected to access network.They can satisfy the access demand of multiple sensors, expand with the Internet through wireless network and insert realization Intellectualized monitoring and management.
And existing data acquisition and transmission equipment, information gathering and transfer function are single, the extensibility of AM access module is relatively poor.In case the access node apparatus design is accomplished, and just is difficult to the sensing collection and the transfer function of node are expanded, more to design again for new application scenarios the node hardware configuration, the secondary redevelopment is than complicacy and need the longer construction cycle.This is difficult to not only realize that multi-platform wireless equipment inserts, and cost is higher, has limited applying of Internet of Things access technology.
Therefore the present invention utilizes the FPGA design that a kind of universal design module of supporting that multiple sensors, wireless communication transmissions and the Internet insert is provided; Can carry out the image data message transmission and the forwarding of multiple sensors and collecting device, and the transmission means that provides multiple Internet of Things to insert.Can be widely used in various Internet of Things data acquisitions and transmission equipment, reduce the internet of things networking cost.
Summary of the invention:
To developing rapidly of technology of Internet of things, in order to expand the application of prior art, solve the problem of above-mentioned existence, therefore need a kind of general, reconfigurable function of design, can be applicable to the universal Internet of Things AM access module of several scenes.Thereby the design flexibility that guarantees Internet of Things AM access module is stronger, and then the design complexities when reducing the Internet of Things access technology and promoting.
The present invention provides a kind of universal Internet of Things AM access module of supporting multiple sensors, wireless transmission and Network Transmission; The final realization: avoid the design iterations Internet of Things to insert under the collecting device node main body hardware case; Through adding the sensor interface and control IP kernel that matees with module interface; Completion is to the collection of multiple sensing data, and the application transport pattern that information data is set, thereby realizes that Internet of Things AM access module is applicable to multiple collecting device device.Support multiple Internet of Things access waies such as wireless transmission, Network Transmission and wire communication simultaneously, can be applied to the apparatus of multiple design requirement.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of Internet of Things AM access module based on FPGA is characterized in that: comprise fpga chip, network chip, memory module, configuration module and external interface module.Wherein:
Described fpga chip is the control and treatment core of said FPGA Internet of Things AM access module, and with network chip, memory module, configuration module, and the external interface module is connected;
Described memory module comprises a flash FLASH memory at least;
Described configuration module comprises FPGA configuration circuit and clock circuit;
Described external interface module comprises the power interface and the Ethernet interface of the AM access module of FPGA Internet of Things.
Further, described memory module comprises a DDR2 memory.
Further, configuration circuit adopts pull-up resistor and pull down resistor setting; Its clock circuit adopts a passive crystal oscillator.
Further, described external interface module comprises one of wireless communication interface or sensor interface, perhaps both combinations.
Further, described wireless communication interface adopts the wireless communication protocol interface based on GPRS, 3G, bluetooth Bluetooth, Zigbee or Wi-Fi.
Further, described sensor interface adopts based on standard I
2C, I
2The sensor communication interfaces of S, SPI or UART.
The AM access module of described FPGA Internet of Things is the center with the fpga chip, and network chip, memory module, configuration module and external interface module all are provided with and are controlled by fpga chip.
Described memory module comprises dynamic DDR2 memory and flash FLASH memory.The DDR2 memory is connected with fpga chip with the FLASH memory, and the DDR2 memory is used for buffer memory and calculates and data and the program handled, and the FLASH memory is used for stored configuration setting and FPGA self-triggered program.
The FPGA configuration circuit of described configuration module is provided with the state of a control signal of fpga chip through the configuration circuit of pull-up resistor and pull down resistor, and fpga chip is configured to from the power on mode of operation of loading procedure of FLASH memory; The clock circuit of configuration module is a passive crystal oscillator, for FPGA provides reference clock signal.The advantage of this clock circuit is that cost is low, area is little, low in energy consumption.
Described external interface module, wireless communication interface can provide the multiple wireless transport communication to insert, and can adopt the wireless communication protocol interface based on GPRS, 3G, bluetooth Bluetooth, Zigbee or Wi-Fi; Sensor interface can provide the multi-channel analog/digital transducer to insert, and can adopt based on standard I
2C, I
2The sensor communication interfaces of S, SPI or UART.Can realize that through sensor interface multiple analog/digital transducer, collecting device link to each other the function and application of extension sensor information gathering with fpga chip; Utilize wireless communication interface, ethernet network interface in the interface module, can the information data of gathering be handled, package, transmission and forwarding; Power interface is the power supply I/O interface of standard, and unified each submodular circuits to Internet of Things AM access module provides the power supply of multiple level standard to supply with; The TDI of jtag interface, TDO, TMS, tck signal are formulated configuration pin with fpga chip and are linked to each other, and connect debugging emulation device and fpga chip, realize the program burn writing and the debugging control of FPGA Internet of Things AM access module; Utilize the UART communication access interface of sensor interface, the realization fpga chip is measured being connected of instrument transformer with General Electric, gathers electric current in the electrical network, voltage electric parameters information data in real time; Utilize the USB standard interface in the interface module to connect the external USB chip for driving, drive the proper communication of USB.Utilize sensor interface and wireless communication interface in the external interface module, can realize support devices such as polytype transducer, collecting device and wireless communication modules.
Described fpga chip also links to each other with the Prog_B reseting controling signal of external interface, is used to control resetting of FPGA program and restarts.
Described fpga chip also links to each other with the DONE status signal of external interface, is used to show the operating state of whole Internet of Things intervention module.
The beneficial effect of the present invention in above technical scheme is:
1) the present invention proposes a kind of general module that is applied to Internet of Things connecting system collecting device device.This module is applicable to the collecting device device in the multiple Internet of Things applied environment; Support RFDC and network data transmission; Can be loaded with multiple analog/digital transducer and collecting device, support the USB interface configuration, have applied widely, extensibility redevelopment low cost and other advantages.
2) compatible multiple sensors and collecting device can comprise temperature sensor, the multiple analog/digital transducer of humidity sensor; Can carry out gathering various environmental parameters and Monitoring Data alternately with digital collection equipment through the universal serial port communication interface.The sensor and collecting device can cover application fields such as industrial and agricultural production, environmental monitoring, intelligent grid.
3) support the several data communication mode, can communicate through cordless communication network, Ethernet cable network, USB, UART, JTAG and terminal.Can satisfy the multiple collecting device demand of Internet of Things connecting system, support multiple Internet of Things access way, reduce the networking cost of Internet of Things access network.
4) power supply of the present invention adopts unified reference power supply interface, supports the supply power mode of DC power supply or lithium battery, can satisfy the requirement of various applied environments.
Description of drawings:
Fig. 1 is the hardware block diagram based on the Internet of Things AM access module of FPGA;
Fig. 2 is the external interface circuit theory diagrams of FPGA Internet of Things AM access module;
Fig. 3 a is the encapsulation specification sketch map vertical view of FPGA Internet of Things AM access module;
Fig. 3 b is the encapsulation specification schematic bottom view of FPGA Internet of Things AM access module.
Among the figure: 1, fpga chip, 2, network chip, 3, the FLASH chip, 4, the DDR2 chip, 5, crystal oscillator, 6, interface pin, 7, the layout junction.
Embodiment:
Through describing embodiments of the invention in detail by accompanying drawing, will help to understand objects and advantages of the present invention, wherein:
Fig. 1 is the hardware block diagram of explaining based on the Internet of Things AM access module of FPGA.
As shown in the figure, described Internet of Things AM access module based on FPGA comprises fpga chip, network chip, memory module, configuration module and external interface module.
Memory module comprises a flash FLASH memory at least, also can comprise a dynamic DDR2 memory; Configuration module comprises FPGA configuration circuit and clock circuit; The external interface module comprises sensor interface, wireless communication interface, ethernet network interface, jtag interface and power interface.
Whole module is the center with the fpga chip, and network chip, memory module, configuration module and external interface module all are provided with and are controlled by fpga chip.Fpga chip is selected the Spartan6 of Xilinx company series of X C6SLX16CSG324FPGA chip for use.This chip internal is integrated 32-bit microprocessor, ram in slice, and various system management and ancillary equipment IP kernel can carry out data computation easily and handle with communications and control.The whole procotol of FPGA Internet of Things AM access module, application framework and application controls software all move on this chip.Network chip is the communication control chip of Ethernet; Adopt the 88E1111 chip of Marvell Alaska company; It is the multidata rate Ethernet interface chip of a 10/100/1000Mb; Support the multiple network data communication mode, its major function is to set up the network link of FPGA and Ethernet, and the Information Monitoring data are sent to server through Ethernet.
The DDR2 memory of memory module all directly links to each other with fpga chip with the FLASH memory, the DDR2 memory be the FPGA processor system extend out the buffer memory device, be used for storage computation and handle intermediate computations data and the program of using implementation.The DDR2 memory chip is selected the EDE1116ACBG_8E_E chip of Elpida company for use; This chip storage capacity is 1Gbit (128MB); Use the 16 parallel-by-bit data-interfaces of x16, support the high-speed data read-write operation of 800MHz, can satisfy the requirement of multiple application access communications mode.And the FLASH memory is the storage chip of block configuration start-up routine and data; Be used to store FPGA BPI boot self-starting configurator and data; This chip is connected with designated external memory data line, address wire and the control line pin of FPGA, by bit stream specification and the control timing loading self-triggered program of fpga chip master control according to standard.This FLASH chip is selected the S29GL256D NOR FLASH memory device of the S29 of Spansion company series for use, supports the data manipulation pattern of x8/x16, and its memory capacity is 256Mbit (32MB).The control connection mode of FLASH chip and fpga chip and the self-starting configuration feature of fpga chip are corresponding; MasterBPI configuration mode control through fpga chip; Begin to read configurator from FLASH chip benchmark zero-address, be loaded in the ram in slice of fpga chip operation and carry out application software with start-up system.
The configuration circuit of configuration module is through peripheral pull-up resistor of some fpga chips and pull down resistor, and the related work pattern configurations status signal of fpga chip is set, and fpga chip is arranged to the configuration mode of Master BPI.The clock circuit of configuration module is provided by a passive crystal oscillator, exports 50MHz reference clock accurately to fpga chip, is that each functional block of fpga chip internal system and application software provide required work clock based on the timer manager IP kernel of this reference clock.The advantage of this clock circuit is that cost is low, area is little and is low in energy consumption.
The external interface module adopts the design philosophy of Universal, modular; Interface comprises Ethernet interface, Zigbee wireless communication interface, jtag interface, sensor interface (temperature sensor interface, UART interface), USB interface and power interface, also has FPGA to reset and controls and the state indication.
Fig. 2 is the interface circuit schematic diagram of FPGA Internet of Things AM access module.
Wherein, Network interface mainly is that Ethernet PHY transfer of data difference is to signal and Network Transmission condition indicative signal; Network data transmits with the GMII reference format through four pairs of differential signal lines (PHY_0N (P), PHY_1N (P), PHY_2N (P), PHY_3N (P)), can directly be linked on the Ethernet physical connection interface; The indication of Network Transmission state comprises PHY_RX and PHY_TX, respectively the Data Receiving of display network transmission and the operating state of transmission.The Zigbee wave point comprises the control that resets with the data transfer signal and the Zigbee wireless module of Zigbee wireless module; The wireless data transmission conformance with standard UART interface specification of Zigbee; Through Zigbee_TXD1, Zigbee_RXD1 and FPGA communication interaction, the information data of the information data of gathering or other no Zigbee equipment transmission is carried out package, forwarding.The UART interface is the asynchronous serial communication interface of standard; Here be connected with the electric parameters instrument transformer through expanding universal I/O interface; Receive General Electric's amount current-voltage information data of gathering in real time, give fpga chip and handle and send service terminal to through plurality of access modes.Temperature sensor interface is the DDQ1 through general purpose I/O interface, is connected with the temperature sensor DS18B20 of periphery, and the temperature information data of collecting device operational environment, communication transmission signal meets I
2The C standard.USB interface mainly is to connect for fpga chip provides usb communication, utilizes the external USB chip for driving, and the usb communication of support terminal and fpga chip is mutual.
Module also has the general purpose I/O interface of other 20 pins, and these I/O interface pin and above-mentioned Zigbee wireless communication interface, sensor interface, usb communication interface can use as universal standard I/O, support the regarded as output controlling of the multiple application demand of user.Can realize support to the access of devices such as various types of transducers, collecting device and wireless communication module.
Power interface mainly is the I/O interface for the power supply that multiple level standard is provided of each main chip on the module, has five voltage sources and three reference ground (GND), and these power supplys provide the working power of 3.3v, 2.5v, 1.8v, 1.2v and 0.9v respectively.
The reseting controling signal PROG_B and the condition indicative signal DONE that also have fpga chip in the interface module.PROG_B is restarted control pin FPGA_PROG_B (V2 pin) with resetting of fpga chip and is connected, and produces the control wave that resets by the peripheral circuit button, realizes the fpga chip system restart.And DONE is the operating state index signal of fpga chip, can drive peripheral LED, shows the operating state of fpga chip system.
Fig. 3 is the encapsulation specification sketch map of FPGA Internet of Things AM access module, and the external interface of module is the external physical connecting interface of module.Module interface has 50 pins 6, is divided into the left and right sides of two row apportion module boards.The hardware circuit board of this module adopts the four-layer circuit board design; Components and parts adopt the single face fabric swatch; Main components and parts fpga chip 1, network chip 2, FLASH chip 3, DDR2 chip 4 and crystal oscillator 5 all are distributed in the top layer of module board, and module board bottom layer is not settled any electronic devices and components; Module is used design of stamp hole interface pin and layout production technology.The encapsulation specification of this module is easy to the hardware designs of the apparatus of various Internet of Things connecting systems and uses and production and processing.
Above-described embodiment of the present invention does not constitute the qualification to protection range of the present invention.Any modification of within spirit of the present invention and principle, being done, be equal to replacement and improvement etc., all should be included within the claim protection range of the present invention.
Claims (6)
1. Internet of Things AM access module based on FPGA is characterized in that: comprise fpga chip, network chip, memory module, configuration module and external interface module.Wherein:
Described fpga chip is the control and treatment core of said FPGA Internet of Things AM access module, and with network chip, memory module, configuration module, and the external interface module is connected;
Described memory module comprises a flash FLASH memory at least;
Described configuration module comprises FPGA configuration circuit and clock circuit;
Described external interface module comprises the power interface and the Ethernet interface of the AM access module of FPGA Internet of Things.
2. according to the AM access module of the said FPGA Internet of Things of claim 1, it is characterized in that described memory module comprises a DDR2 memory.
3. according to the AM access module of the said FPGA Internet of Things of claim 1, it is characterized in that configuration circuit adopts pull-up resistor and pull down resistor setting; Its clock circuit adopts a passive crystal oscillator.
4. according to the AM access module of the said FPGA Internet of Things of claim 1, it is characterized in that described external interface module comprises one of wireless communication interface or sensor interface, perhaps both combinations.
5. according to the AM access module of the said FPGA Internet of Things of claim 4, it is characterized in that described wireless communication interface adopts the wireless communication protocol interface based on GPRS, 3G, bluetooth Bluetooth, Zigbee or Wi-Fi.
6. according to the AM access module of the said FPGA Internet of Things of claim 4, it is characterized in that described sensor interface adopts based on standard I
2C, I
2The sensor communication interfaces of S, SPI or UART.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104074937A CN102420874A (en) | 2011-12-08 | 2011-12-08 | Field programmable gate array (FPGA)-based Internet of things accessing module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104074937A CN102420874A (en) | 2011-12-08 | 2011-12-08 | Field programmable gate array (FPGA)-based Internet of things accessing module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102420874A true CN102420874A (en) | 2012-04-18 |
Family
ID=45945106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104074937A Pending CN102420874A (en) | 2011-12-08 | 2011-12-08 | Field programmable gate array (FPGA)-based Internet of things accessing module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102420874A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102866735A (en) * | 2012-09-10 | 2013-01-09 | 河海大学常州校区 | Miniature type data acquisition node server based on WLAN (Wireless Local Area Network) |
| CN105897894A (en) * | 2016-04-12 | 2016-08-24 | 北京大道信通科技股份有限公司 | Internet of things universal acquisition device integrator |
| CN107248953A (en) * | 2017-06-21 | 2017-10-13 | 深圳市盛路物联通讯技术有限公司 | Forward-path is selected to carry out the method and apparatus that data are reported in a kind of Internet of Things |
| CN108052326A (en) * | 2017-12-05 | 2018-05-18 | 北京工业大学 | A kind of Xilinx FPGA support the implementation method of Arduino IDE exploitations |
| CN108594738A (en) * | 2018-03-14 | 2018-09-28 | 青岛市光电工程技术研究院(中国科学院光电研究院青岛光电工程技术研究中心) | Distributed apparatus monitoring system |
| CN110418304A (en) * | 2019-07-19 | 2019-11-05 | 深圳迈博创意有限公司 | Intelligent apparatus based on Internet of Things |
| CN112800001A (en) * | 2021-04-13 | 2021-05-14 | 北京乐研科技有限公司 | High-performance Internet of things hardware platform and method based on ARM platform architecture |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101135889A (en) * | 2007-09-30 | 2008-03-05 | 重庆邮电大学 | EPA on-site controller based on SOPC |
| CN102083227A (en) * | 2010-11-17 | 2011-06-01 | 广州杰赛科技股份有限公司 | Wireless access device and method |
-
2011
- 2011-12-08 CN CN2011104074937A patent/CN102420874A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101135889A (en) * | 2007-09-30 | 2008-03-05 | 重庆邮电大学 | EPA on-site controller based on SOPC |
| CN102083227A (en) * | 2010-11-17 | 2011-06-01 | 广州杰赛科技股份有限公司 | Wireless access device and method |
Non-Patent Citations (2)
| Title |
|---|
| 彭冬鸣: "基于FPGA开", 《北京工业大学硕士学位论文》 * |
| 翟羽佳: "传感器接口标准化的设计与实现", 《中国科学技术大学硕士学位论文》 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102866735A (en) * | 2012-09-10 | 2013-01-09 | 河海大学常州校区 | Miniature type data acquisition node server based on WLAN (Wireless Local Area Network) |
| CN105897894A (en) * | 2016-04-12 | 2016-08-24 | 北京大道信通科技股份有限公司 | Internet of things universal acquisition device integrator |
| CN107248953A (en) * | 2017-06-21 | 2017-10-13 | 深圳市盛路物联通讯技术有限公司 | Forward-path is selected to carry out the method and apparatus that data are reported in a kind of Internet of Things |
| WO2018233027A1 (en) * | 2017-06-21 | 2018-12-27 | 深圳市盛路物联通讯技术有限公司 | Method and device for selecting forwarding path for data reporting in internet of things |
| CN108052326A (en) * | 2017-12-05 | 2018-05-18 | 北京工业大学 | A kind of Xilinx FPGA support the implementation method of Arduino IDE exploitations |
| CN108052326B (en) * | 2017-12-05 | 2020-11-20 | 北京工业大学 | Implementation method for supporting Arduino IDE development by Xilinx FPGA |
| CN108594738A (en) * | 2018-03-14 | 2018-09-28 | 青岛市光电工程技术研究院(中国科学院光电研究院青岛光电工程技术研究中心) | Distributed apparatus monitoring system |
| CN110418304A (en) * | 2019-07-19 | 2019-11-05 | 深圳迈博创意有限公司 | Intelligent apparatus based on Internet of Things |
| CN112800001A (en) * | 2021-04-13 | 2021-05-14 | 北京乐研科技有限公司 | High-performance Internet of things hardware platform and method based on ARM platform architecture |
| CN112800001B (en) * | 2021-04-13 | 2021-08-17 | 北京乐研科技有限公司 | High-performance Internet of things hardware platform and method based on ARM platform architecture |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102420874A (en) | Field programmable gate array (FPGA)-based Internet of things accessing module | |
| Dutta et al. | A building block approach to sensornet systems | |
| CN101309297B (en) | Multi-type appliance control method based on multimedia wireless sensor network | |
| CN101902831B (en) | Node in wireless sensor network, applicable to detection of mechanical equipment vibration | |
| CN101908377B (en) | Modular data logger based on Zigbee wireless communication and operating method thereof | |
| CN102801818B (en) | Universal sensor interface acquisition system based on ZigBee technology | |
| CN103235749A (en) | FPGA-based sensor network SoC proto verification platform | |
| Zhang et al. | A kind of design schema of wireless smart water meter reading system based on zigbee technology | |
| CN101666651A (en) | Navigation computer of laser gyro strapdown system | |
| CN102486389A (en) | Grain bin temperature and humidity measuring device of wireless sensor network | |
| CN103226346A (en) | Configurable multi-channel analog and digital signal acquisition system | |
| CN206146465U (en) | Box transformer monitoring device | |
| Andersen et al. | System design trade-offs in a next-generation embedded wireless platform | |
| Gu et al. | Design and implementation of energy data collection system using wireless fidelity (WiFi) module and current transformer | |
| CN202385126U (en) | Gateway device for internet of things | |
| CN203260028U (en) | Sensor network SoC prototype verification platform based on FPGA | |
| CN203278863U (en) | IEC60044 message acquisition board card based on CRIO (Core-Router Integrated Overlay) platform | |
| CN202535395U (en) | Internet of Things access module based on FPGA | |
| Hinkelmann et al. | A reconfigurable prototyping platform for smart sensor networks | |
| CN202677114U (en) | Industrial control main board based on MSP430 single chip microcomputer | |
| CN101561299A (en) | Modularized metering device | |
| CN204230559U (en) | A kind of USB interface turns serial port device | |
| CN102215602A (en) | Wireless sensor network monitoring node in high-temperature coalfield fire area at 130-1000 DEG C and monitoring method thereof | |
| CN203278857U (en) | Dual-path IEC61850 message receiving and transmitting device based on CRIO (Core-Router Integrated Overlay) platform | |
| CN209311882U (en) | Wireless multifunctional acquisition device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120418 |