CN101784132A - Wireless sensor network gateway equipment supporting Zigbee protocol and GPRS communication standard - Google Patents

Wireless sensor network gateway equipment supporting Zigbee protocol and GPRS communication standard Download PDF

Info

Publication number
CN101784132A
CN101784132A CN200910077014A CN200910077014A CN101784132A CN 101784132 A CN101784132 A CN 101784132A CN 200910077014 A CN200910077014 A CN 200910077014A CN 200910077014 A CN200910077014 A CN 200910077014A CN 101784132 A CN101784132 A CN 101784132A
Authority
CN
China
Prior art keywords
unit
wireless sensor
sensor network
gateway equipment
communication unit
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
Application number
CN200910077014A
Other languages
Chinese (zh)
Inventor
刘洪涛
曹顺田
张瑞
赖望峰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BEIJING CLESUN SCIENCE & TECHNOLOGY Co Ltd
Original Assignee
BEIJING CLESUN SCIENCE & TECHNOLOGY Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by BEIJING CLESUN SCIENCE & TECHNOLOGY Co Ltd filed Critical BEIJING CLESUN SCIENCE & TECHNOLOGY Co Ltd
Priority to CN200910077014A priority Critical patent/CN101784132A/en
Publication of CN101784132A publication Critical patent/CN101784132A/en
Pending legal-status Critical Current

Links

Images

Landscapes

  • Mobile Radio Communication Systems (AREA)

Abstract

The invention discloses wireless sensor network gateway equipment supporting a Zigbee protocol and a GPRS communication standard, which is characterized in that the gateway equipment consists of a microprocessor unit, a Zigbee communication unit, a GPRS communication unit, a local storage unit, an input/output unit and a liquid crystal, a key and the like which are externally arranged, wherein the microprocessor is realized by a C8051F3408 bit double serial port microprocessor, and the microprocessor, the Zigbee communication unit and the GPRS communication unit are respectively connected through an RS232 serial port. The invention can be used as the gateway equipment to realize the data bypassing of a Zigbee wireless personal area network and a GPRS wide area network, particularly, can be applied to the information acquisition gateway nodes of a sensor in the wireless sensor network, and can also be applicable to the fields such as network environment monitoring, smart home, intelligent transportation system, security and alarm application, industrial control and the like by using wireless sensors.

Description

A kind of wireless sensor network gateway equipment of supporting Zigbee agreement and GPRS communication standard
Technical field
(General Packet Radio Service: GPRS) wan communication technical field and wireless sensor network application relate in particular to an a kind of territory net and wireless sensor network gateway equipment wan communication, that meet Zigbee agreement and GPRS standard supported to the present invention relates to ZigBee low rate Wireless Personal Network communication technical field, GPRS.
Background technology
Along with the continuous development of wireless communication technology, sensor technology and network technology, wireless sensor network has obtained the extensive concern of academia and industrial quarters as a kind of multidisciplinary interleaving techniques.Wireless sensor network is included various transducers in network, has constituted the nerve endings of Internet, and the network terminal is extended to various small transducers by original PC (Personal Computer), is regarded as the Next Generation Internet network.Wireless sensor network is assessed as following one of human lives's the ten big technology that influence by U.S.'s " technology weekly ", it has self-organizing, low cost, advantage of low power consumption, is widely used in fields such as environmental monitoring, intelligent transportation, Industry Control, Smart Home at present.
Wireless sensor network is an a kind of closely territory network, and sensing data mostly is low volume data, and lower rate transmissions is its principal character.The Zigbee standard is a kind of low rate, highly reliable territory net wireless communication standard, realizes based on IEEE 802.15.4MAC (Media Access Control) layer protocol, supports the Mesh network.Existing hundreds of the members of Zigbee alliance are initiated by the famous IC in the whole world (Integrated Circuit) at present.Be widely adopted based on Zigbee protocol construction wireless sensor network.
The wireless sensor network access technology is sensor node to be included in the key technology of Wide Area Network, also is the hot fields in the research of current wireless sensing network.At present, its implementation can be divided into two classes, and a class is that the interconnected gateway of a kind of territory net of realization and IP (Internet Protocol) net is not equipped with, and directly transducer is inserted Internet.Another kind of is to realize a kind of territory net and 2.5G or the interconnected gateway device of 3G wireless wide area network, sensor information is sent to mobile phone or PDA (Personal Digital Assistant) user terminal, realize the integrated wireless solution of a kind of sensor data acquisition and control.
At present, in the wireless sensor network product, the interconnected gateway device of a wireless communication module and a realization territory net and Internet occurs, the module of the CC2430 that produces as TI (Texas Instrument) company, the MC13213 module of Freescale company, the ConnectPort X series of products of U.S. Digi company etc., also there are similar products in companies such as the Shanghai Shun Zhou Science and Technology Ltd. of the domestic Zigbee of being absorbed in research and development of products, the wireless imperial Science and Technology Ltd. in Chengdu.But realize that the interconnected gateway device of a territory net and 2.5G or 3G wireless wide area network does not also occur at present, the present invention is directed to the wireless integrative solution demand of current industrial and domestic applications, realized the wireless sensor network gateway equipment of a kind of Zigbee of support agreement and GPRS communication standard, the gateway device of a kind of Wireless Personal Network and wireless wide area network seamless link is provided, has a wide range of applications in fields such as Industry Control, Smart Home, intelligent transportation, security alarms.
Summary of the invention
The problem that the embodiment of the invention will solve provides a kind ofly can create the Zigbee network, have local storage function, have various input/output interfaces, support the radio sensing network gateway device that Zigbee and GPRS data transparency transmit.
For achieving the above object, a kind of Zigbee of the support agreement that the technical scheme of the embodiment of the invention provides and the wireless sensor network gateway equipment of GPRS communication standard, comprise: microprocessor unit, the Zigbee communication unit, GPRS (General Packet Radio Service) communication unit, local memory cell, input/output interface unit and Peripheral Interface unit such as liquid crystal, button.Wherein, microprocessor unit is realized by the two serial ports microprocessors in C8051F3408 position, microprocessor unit links to each other by the RS232 serial ports with the Zigbee communication unit, local memory cell links to each other with microprocessor unit by IIC (Inter-Integrated-Circuit) interface, the GPRS communication unit links to each other with microprocessor unit by the RS232 serial ports, microprocessor unit is by GPIO (General-Purpose Input/Output), AD (Analog toDigital) interface links to each other button with I/O unit, peripheral units such as liquid crystal link to each other by GPIO with microprocessor unit.
Wherein, described Zigbee communication unit is realized based on the XBee chip, meets the Zigbee standard, can be used as coordinator node and makes up wireless sensor network.
Described GPRS communication unit is realized based on the MC55 module, supports three frequency mode of operations, has the voice-and-data transfer function, can be used as mobile node and inserts the GPRS cellular network.
Described local memory cell realizes having advantages such as real-time clock control, low-power consumption based on 16M serial firmware Flash memory AT26DF1 chip.
Described I/O unit has GPIO, and AD, USB interfaces such as (Universal Serial Bus) can drive relay, supports the input and the output of various sensing datas.
Peripheral units such as described button, liquid crystal have liquid crystal display, keyboard entry function, can realize the liquid crystal display and the button operation of central data.
Compared with prior art, technical scheme of the present invention has following advantage: the realization of novelty a kind of wireless gateway device, can support 2.4G frequency range Zigbee communication to communicate by letter with 900MHz/1800MHz/1900MHz frequency range GPRS and mutual data transparency transmission simultaneously, for the control of the intelligent radio of industrial equipment and household electrical appliance provides integrated access scheme, filled up the blank that current wireless sensor network and 2.5G cellular network access device are researched and developed.
Description of drawings
Fig. 1 is that the hardware of gateway device of the present invention connects block diagram
Fig. 2 is the MCU unit schematic diagram of gateway device of the present invention
Fig. 3 is the GPRS communication unit schematic diagram of gateway device of the present invention
Fig. 4 is the Zigbee communication unit schematic diagram of gateway device of the present invention
Embodiment
Below in conjunction with accompanying drawing 1-4 and embodiment, the specific embodiment of the present invention is described in further detail.Following examples are used to illustrate the present invention, but are not used for limiting the scope of the invention.
With reference to Fig. 1, Fig. 1 represents that the hardware of gateway device of the present invention connects block diagram.Hardware of the present invention is realized based on the two serial ports microprocessors in C8051F3408 position, is core with the microprocessor unit, has realized a kind of wireless central main control system function with computing capability, storage capacity and communication capacity.Hardware is linked to be and comprises: microprocessor unit, Zigbee communication unit, GPRS (General Packet Radio Service) communication unit, local memory cell, input/output interface unit and Peripheral Interface unit such as liquid crystal, button.Wherein, microprocessor unit is realized by the two serial ports microprocessors in C8051F3408 position, microprocessor unit links to each other by the RS232 serial ports with the Zigbee communication unit, local memory cell links to each other with microprocessor unit by HC (Inter-Integrated-Circuit) interface, the GPRS communication unit links to each other with microprocessor unit by the RS232 serial ports, microprocessor unit is by GPIO (General-PurposeInput/Output), AD (Analog to Digital) interface links to each other button with I/O unit, peripheral units such as liquid crystal link to each other by GPIO with microprocessor unit.
With reference to Fig. 2, Fig. 2 represents the microprocessor unit schematic diagram of gateway device of the present invention.Microprocessor is selected the two serial port chip in C8051F3408 position for use, and this chip is selected the instruction pipeline structure for use based on high speed 8051 microcontroller kernels, and speed can reach 48MIPS, and the time of implementation of 70% instruction is 1 or 2 system clock, has the interrupt system of expansion.Microprocessor unit method of attachment of the present invention is: P0.4, and P0.5, P0.6, P0.7, P1.0, P1.1 links to each other with GPRS unit MC55 chip.P0.0, P0.1, P0.2, P1.2 links to each other with local memory cell FLAsh chip AT26DF161.P1.4, P1.3 links to each other with Zigbee communication unit XBee chip.P4.0, P4.1, P4.2, P4.3, P4.4, P4.5, P4.6, P4.7 links to each other with the liquid crystal chip of peripheral unit.
With reference to Fig. 3, Fig. 3 represents the GPRS communication unit schematic diagram of gateway device of the present invention.Wherein, the GPRS communication module is selected Siemens MC 55 for use.This wireless module is three frequency modules (35x32.5x2.95mm) of current size minimum.Support 900MHz, 1800MHz and 1900MHz three frequency range mode of operations.Implementation method of the present invention is the peripheral circuit of realization MC55,, the TXD0 of MC55 is linked to each other with the RS232 serial ports of microprocessor chip C8051F340 with RXD0.The serial communication operation setting is: baud rate 9600, and data bit 8, position of rest 1, check digit does not have.
With reference to Fig. 4, Fig. 4 represents the Zigbee communication unit schematic diagram of gateway device of the present invention.Zigbee chip of the present invention is selected 8 single-chip microcomputers of MC9S08GT60 for use, and MC13193RF (Radio Frenquency) chip is realized.MC9S08GT60 links to each other by SPI (Serial Peripheral Interface) interface with MC13193.MC9S08GT60 links to each other with the C8051F340 serial ports of microprocessor unit unit by the RS232 serial ports.The MC9S08GT60 chip has the RAM of 4K size, the FLASH of 64K.ADC interface and 1 SPI interface with 8 number word channel interfaces, 8 10 bits.The MC13193 chip has the output of 3.6to-16dBm, and 2.0 to the 3.4V operating voltage.The sensitivity of-92dBm.Circuit adopts the multi-layer PCB design, deft design, and cost is lower.Antenna point is about 100m to a transmitting-receiving distance.The SPI interface is a kind of high-speed synchronous serial communication interface of new development in recent years.Communication is divided into master control side (Master) and from the side (Slave).Whole communication comprises SPISTE-SPIStrob, SPICLK-Clock, SIMO (Slave Input/Master Out), SOMI signals of communication such as (SlaveOutput/Master In) by the control of master side.
In addition, peripheral units such as button of the present invention, liquid crystal comprise peripheral hardwares such as button, liquid crystal display screen, LED.The button peripheral hardware adopts high-low level commonly used to realize, and realizes by the matrix press-key scanning imaging system.Liquid crystal display realizes based on the 128X64 of band Chinese word library.128X64 is a kind of have 4/8 parallel-by-bits, 2 lines or 3 line serial multiple interfaces modes, and the dot-matrix lcd module of GB one-level, secondary simplified form of Chinese Character character library is contained in inside; Its display resolution is 128 * 64, built-in 8192 16*16 point Chinese characters and 128 16*8 point ascii character-sets. utilize this module interface mode and operational order simply and easily flexibly, can constitute complete Chinese man-machine interaction graphical interfaces.The Chinese character of 8 * 4 row, 16 * 16 dot matrix can be shown, also graphical display can be finished.Low-voltage Low-power is its another distinguishing feature.Compare with graphic dot matrix LCD MODULE of the same type by the liquid crystal display scheme that this module constitutes, much succinct no matter hardware circuit or display routine are all wanted, and the price of this module is also a little less than the graphic lcd module of identical dot matrix.Its display packing is shown in following program:
void?main(void)
{
char?i;
unsigned?char?tem1,tem2,temp,temph,templ,tema,temb,tem;
RST=0;delay(20);RST=1;
initial();
for(;;)
{
disp_all(0x00,0x00);
delay(80);
disp_bmp(tab1);
delay(100);
disp_all(0x55,0xaa);
delay(80);
disp_all(0x00;0x00);
delay(50);
delayms(10000);
disp_contrast1(0Xff,0xff);
delay(10);
disp_contrast2(0X00,0x00);
delay(10);
wcomd(0xa1);
wcomd(0x24);
wcomd(0x81);
wcomd(0x2a);
delay(60);
disp_all(0x00,0xff);
delay(100);
}
}
Local memory cell of the present invention realizes based on AT26DF161A serial Flash memory.This chip has the memory capacity of 16Mbit, supports the SPI interface, and the page or leaf size is 256Byte, maximum 66MHz clock frequency, the framework of have simultaneously flexibly, evenly wiping.Implementation method of the present invention is that AT26DF161A links to each other with microprocessor chip by the IIC interface of SI, SCK.
I/O unit of the present invention is supported the input and the output of digital signal, analog signal, switching value, usb data.I/O unit links to each other with the IO pin of microprocessor, supports the I/O of various sensing datas, also can directly drive relay, realizes the Threshold Alerts of environmental information.
In sum, according to the present invention, can obtain a kind of wireless sensor network gateway equipment with the local storage capacity of data, computing capability, Zigbee Wireless Personal Network communication capacity, GPRS wireless wide-area communication capacity and I/O access capability.Gateway node can be created local Zigbee territory network, can realize the transmission of Zigbee data and GPRS data transparency.
The present invention can be applied in the fields such as environmental monitoring, Smart Home, intelligent transportation, health supervision, Industry Control, security alarm, reading intelligent agriculture.Particularly at freezer, greenhouse, agricultural greenhouse isothermal, humidity sensor environmental monitoring and alert applications field.Can comprise the wireless sensor network of temperature, humidity, transducer such as infrared by deployment, use gateway device of the present invention, realize collection and commands for controlling sensor data information in the wireless sensor network.For example, indoor at each booth that is used for precision agriculture research, dispose a plurality of temperature respectively, the humidity sensor node, environmental information in the timing sampling booth, simultaneously around booth, lay the multi-hop wireless sensor network routing node, routing node finally converges to gateway node of the present invention with sensing data, gateway node is by its GPRS communication unit, with temperature, the humidity sensor data are sent among remote monitoring center staff's the PDA, the staff also can pass through gateway device, send the parameters such as report cycle of commands for controlling booth inner sensor node, when the booth climatic environment exceeds level threshold value, can report to the police to Surveillance center by gateway node.
The above only is a preferred implementation of the present invention.Need to prove that for those skilled in the art, under the prerequisite that does not break away from the technology of the present invention principle, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims (7)

1. a wireless sensor network gateway equipment is characterized in that, comprises microprocessor unit, the Zigbee communication unit, GPRS (General Packet Radio Service) communication unit, local memory cell, input/output interface unit and Peripheral Interface unit.
2. wireless sensor network gateway equipment as claimed in claim 1, it is characterized in that, microprocessor unit is realized by the two serial ports microprocessors in C8051F3408 position, microprocessor unit links to each other by the RS232 serial ports with the Zigbee communication unit, local memory cell links to each other with microprocessor unit by IIC (Inter-Integrated-Circuit) interface, the GPRS communication unit links to each other with microprocessor unit by the RS232 serial ports, microprocessor unit is by GPIO (General-PurposeInput/Output), AD (Analog to Digital) interface links to each other with I/O unit, and peripheral unit links to each other by GPIO with microprocessor unit.
3. wireless sensor network gateway equipment as claimed in claim 1 is characterized in that, described Zigbee communication unit is realized based on the XBee chip, meets the Zigbee standard, can be used as coordinator node and makes up wireless sensor network.
4. wireless sensor network gateway equipment as claimed in claim 1 is characterized in that, described GPRS communication unit is realized based on the MC55 module, supports three frequency mode of operations, has the voice-and-data transfer function, can be used as mobile node and inserts GPRS network.
5. wireless sensor network gateway equipment as claimed in claim 1 is characterized in that, described local memory cell realizes having advantages such as real-time clock control, low-power consumption based on 16M serial firmware Flash memory AT26DF1 chip.
6. wireless sensor network gateway equipment as claimed in claim 1 is characterized in that, described I/O unit, has GPIO, AD, USB interfaces such as (Universal Serial Bus) can drive relay, supports the input and the output of various sensing datas.
7. wireless sensor network gateway equipment as claimed in claim 1 is characterized in that peripheral units such as described button, liquid crystal have liquid crystal display, keyboard entry function, can realize the liquid crystal display and the button operation of central data.
CN200910077014A 2009-01-16 2009-01-16 Wireless sensor network gateway equipment supporting Zigbee protocol and GPRS communication standard Pending CN101784132A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN200910077014A CN101784132A (en) 2009-01-16 2009-01-16 Wireless sensor network gateway equipment supporting Zigbee protocol and GPRS communication standard

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN200910077014A CN101784132A (en) 2009-01-16 2009-01-16 Wireless sensor network gateway equipment supporting Zigbee protocol and GPRS communication standard

Publications (1)

Publication Number Publication Date
CN101784132A true CN101784132A (en) 2010-07-21

Family

ID=42523878

Family Applications (1)

Application Number Title Priority Date Filing Date
CN200910077014A Pending CN101784132A (en) 2009-01-16 2009-01-16 Wireless sensor network gateway equipment supporting Zigbee protocol and GPRS communication standard

Country Status (1)

Country Link
CN (1) CN101784132A (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101917465A (en) * 2010-08-02 2010-12-15 任勇 Network architecture of Internet of things based on mobile gateway
CN102098062A (en) * 2010-12-09 2011-06-15 北京邮电大学 Mini type internet of things networking system based on millimeter wave and method thereof
CN102202424A (en) * 2011-05-19 2011-09-28 重庆邮电大学 Transparent wireless sensor network/time division-synchronization code division multiple access (WSN/TD-SCDMA) gateway based on internet protocol version 6 (IPv6)
CN102387609A (en) * 2010-08-27 2012-03-21 苏州大学 Wireless sensor gateway device
CN102548055A (en) * 2011-12-31 2012-07-04 大连理工大学 GPRS (General Packet Radio Service) gateway in IOT (internet of things) system
CN102801903A (en) * 2012-07-30 2012-11-28 何建亿 Web camera with radio frequency gateway function
CN102811126A (en) * 2011-06-03 2012-12-05 强盟兴业国际有限公司 IP sharing device
CN103428078A (en) * 2013-08-30 2013-12-04 江苏沙湖科技发展有限公司 Communication gateway in intelligent power grid
CN103471656A (en) * 2013-09-11 2013-12-25 南京德普达电子技术有限公司 Device and method for achieving sensor multilevel cascade connection
CN104754027A (en) * 2015-01-27 2015-07-01 中国石油天然气集团公司 Cross-network communication method and communication system
CN105678996A (en) * 2016-03-23 2016-06-15 安徽京师方圆信息技术有限公司 Field data collector
CN105827488A (en) * 2015-01-04 2016-08-03 济宁智城中科信息技术有限公司 MESH network system applicable to smart home, networking method and communication method

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101917465A (en) * 2010-08-02 2010-12-15 任勇 Network architecture of Internet of things based on mobile gateway
CN102387609A (en) * 2010-08-27 2012-03-21 苏州大学 Wireless sensor gateway device
CN102098062A (en) * 2010-12-09 2011-06-15 北京邮电大学 Mini type internet of things networking system based on millimeter wave and method thereof
CN102202424B (en) * 2011-05-19 2014-06-04 重庆邮电大学 Transparent wireless sensor network/time division-synchronization code division multiple access (WSN/TD-SCDMA) gateway based on internet protocol version 6 (IPv6)
CN102202424A (en) * 2011-05-19 2011-09-28 重庆邮电大学 Transparent wireless sensor network/time division-synchronization code division multiple access (WSN/TD-SCDMA) gateway based on internet protocol version 6 (IPv6)
CN102811126A (en) * 2011-06-03 2012-12-05 强盟兴业国际有限公司 IP sharing device
CN102548055A (en) * 2011-12-31 2012-07-04 大连理工大学 GPRS (General Packet Radio Service) gateway in IOT (internet of things) system
CN102801903A (en) * 2012-07-30 2012-11-28 何建亿 Web camera with radio frequency gateway function
CN103428078A (en) * 2013-08-30 2013-12-04 江苏沙湖科技发展有限公司 Communication gateway in intelligent power grid
CN103471656A (en) * 2013-09-11 2013-12-25 南京德普达电子技术有限公司 Device and method for achieving sensor multilevel cascade connection
CN103471656B (en) * 2013-09-11 2016-08-10 南京德普达电子技术有限公司 One realizes sensor multilevel cascade connection device and method
CN105827488A (en) * 2015-01-04 2016-08-03 济宁智城中科信息技术有限公司 MESH network system applicable to smart home, networking method and communication method
CN104754027A (en) * 2015-01-27 2015-07-01 中国石油天然气集团公司 Cross-network communication method and communication system
CN104754027B (en) * 2015-01-27 2018-05-04 中国石油天然气集团公司 The communication means and communication system of a kind of across a network
CN105678996A (en) * 2016-03-23 2016-06-15 安徽京师方圆信息技术有限公司 Field data collector

Similar Documents

Publication Publication Date Title
CN101784132A (en) Wireless sensor network gateway equipment supporting Zigbee protocol and GPRS communication standard
Wang et al. System of wireless temperature and humidity monitoring based on Arduino Uno platform
CN201262704Y (en) Wireless monitoring apparatus for dwelling house energy-saving
CN201867643U (en) Intelligent home central controller
CN205027451U (en) Granary temperature monitoring device based on thing networking
CN102402213A (en) Heterogeneous network-based remote monitoring system for wind and light supplementary power station
CN102883340A (en) Remote transfer transmission system suitable for network-free areas and transmission method thereof
CN103528702A (en) ZigBee-based temperature monitoring device, ZigBee-based temperature monitoring system and implementation method thereof
CN101426291A (en) General base station based on wireless sensor network
CN203299198U (en) Soil environment monitoring data collection terminal based on SDI-12 bus
CN203397185U (en) Storage environment monitoring system
CN104036630A (en) Air purification and control system based on EnOcean and WiFi (wireless fidelity)
CN203288046U (en) Household combustion gas leakage monitoring system based on wireless communication and GSM mobile communication
CN202676932U (en) Multi-channel meteorological observation device
CN201072594Y (en) Wireless pressure collection and recording system
CN204009523U (en) A kind of bridge remote monitoring system based on ZigBee technology
CN201673594U (en) Wireless sensing device and sensing system
CN205485700U (en) Based on MSP430F149 humiture monitoring and nRF905 multichannel wireless transmission watch -dog
CN102256414A (en) Terminal node of intelligent street lamp control system based on wireless sensor network
CN102665292A (en) Sensor node device for wireless sensor network and operation method of sensor node device
CN202150949U (en) Internet of things experimental device
CN102573118A (en) Multi-parameter monitoring using wireless sensor node with self-triggering function
CN202306261U (en) Heterogeneous-network-based remote monitoring system for wind-solar energy complementary power station
CN205192628U (en) Temperature monitoring device based on radio communication technique
CN103295382A (en) Gamma-ray wireless sensing monitoring apparatus and system

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
DD01 Delivery of document by public notice

Addressee: Lai Wangfeng

Document name: Notification of Publication and of Entering the Substantive Examination Stage of the Application for Invention

C02 Deemed withdrawal of patent application after publication (patent law 2001)
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20100721