CN102305641A - Portable wireless sensor node for chemical safety monitoring - Google Patents
Portable wireless sensor node for chemical safety monitoring Download PDFInfo
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- CN102305641A CN102305641A CN201110136469A CN201110136469A CN102305641A CN 102305641 A CN102305641 A CN 102305641A CN 201110136469 A CN201110136469 A CN 201110136469A CN 201110136469 A CN201110136469 A CN 201110136469A CN 102305641 A CN102305641 A CN 102305641A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 15
- 239000000126 substance Substances 0.000 title claims abstract description 9
- 238000006243 chemical reaction Methods 0.000 claims abstract description 46
- 238000004891 communication Methods 0.000 claims abstract description 15
- 239000013078 crystal Substances 0.000 claims abstract description 14
- 230000007613 environmental effect Effects 0.000 claims abstract description 14
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 8
- 230000010355 oscillation Effects 0.000 claims abstract description 3
- 239000003990 capacitor Substances 0.000 claims description 40
- 229910052715 tantalum Inorganic materials 0.000 claims description 14
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 14
- 235000006508 Nelumbo nucifera Nutrition 0.000 claims description 5
- 240000002853 Nelumbo nucifera Species 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 230000001052 transient effect Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000035899 viability Effects 0.000 description 1
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Abstract
The invention relates to a portable wireless sensor node for chemical safety monitoring. The portable wireless sensor node comprises a power supply management module, an environmental parameter acquisition module, a ZigBee wireless communication module and a processor module, wherein the power supply management module comprises a 7.4-volt lithium battery, a 5-volt voltage conversion circuit, a 3.3-volt voltage conversion circuit and a 1.8-volt voltage conversion circuit; the environmental parameter acquisition module comprises a humiture acquisition unit and an air pressure acquisition unit; the processor module takes a processor LPC2109FBD64/01 as a core; and a resetting circuit, a crystal oscillation circuit, a joint test action group (JTAG) circuit and an Internet service provider (ISP) circuit are arranged at the periphery of the processor module respectively. The portable wireless sensor node is convenient to use and has a wide monitoring range.
Description
Technical field
The invention belongs to wireless sensor network, mix fieldbus, the embedded system technology field, be specifically related to a kind of portable wireless sensor node that can be used for the chemical industry security monitoring.
Background technology
Along with development of wireless communication devices; Wireless Telecom Equipment is constantly ripe; Cost also further reduces; In order to solve the monitoring and the control problem of many mobile object, target rotation and hazardous environment object under industrial environment and the process control environment, the new technology of the wire/wireless fieldbus (hybrid wired/wireless field bus) of a specific admixture has appearred.
, safety in production risk higher chemical enterprise comparatively abominable at working environment, mixing field bus technique can dispose with operation field, promptly covers all workshop sections.When the field personnel carries wireless sensor node; Can also utilize the location technology of wireless sensor network that the staff is carried out real-time positioning; Can in accident position constantly take place to the staff of operation field just in case have an accident and follow the tracks of, be convenient to the emergency management and rescue scheme of design of High Efficiency.Based on the modernized chemical industry safety monitoring system that mixes field bus technique comprise wire/wireless gateway between ZigBee and the CAN bus, based on the wireless sensor node of ZigBee, based on sensor node of CAN bus etc.
Wherein, Wireless sensor node can be divided into two types, and one type is carry-on wireless sensor node, is the wireless sensor node that the staff carries; Be used to monitor position, vital signs, surrounding environment parameter of field personnel etc.; These information both can be in the rescue process in time judgment task personnel position and vital movement situation, again can be through the staff in on-the-spot the moving of technology, realize in a big way in the monitoring of environmental parameter.Another kind of is the portable radiotelephone sensor node, be used for laying the local monitoring of environmental parameter and the device parameter of CAN bus in temporary transient inconvenience, and staff's carry-on wireless sensor node data around the responsible relaying.
Summary of the invention
The invention provides a kind ofly, can be used for the portable wireless sensor node of chemical industry security monitoring based on the ZigBee wireless technology.This node can be used for temporary transient inconvenience and lays the local monitoring of environmental parameter and the device parameter of CAN bus, and can be responsible for relaying wireless sensor node data on every side.
The concrete technical scheme that the present invention takes is: the present invention includes power management module, environmental parameter acquisition module, ZigBee wireless communication module and processor module.
Said power management module comprises 7.4V lithium battery, 5V voltage conversion circuit, 3.3V voltage conversion circuit, 1.8V voltage conversion circuit.Lithium battery JS-7.4V-2.2AH provides power supply for the 5V voltage conversion circuit; The core of 5V voltage conversion circuit is a SPX1117M3-5.0 low pressure difference linearity stabilized voltage supply chip, and 3.3V voltage conversion circuit, 1.8V voltage conversion circuit are supplied with in its output; 3.3V the core of voltage conversion circuit is a SPX1117M3-3.3 low pressure difference linearity stabilized voltage supply chip, processor module, environmental parameter acquisition module and ZigBee wireless communication module are supplied with in its output; 1.8V the core of voltage conversion circuit is a SPX1117M3-1.8 low pressure difference linearity stabilized voltage supply chip, processor module is supplied with in its output.
Said environmental parameter acquisition module comprises humiture collection unit and air pressure collecting unit.Inter-Integrated Circuit (the I of humiture collection cell S HT21 digital temperature-humidity sensor and processor module
2C) bus links to each other, and power end links to each other with the 3.3V voltage conversion circuit; (Serial Peripheral Interface's Serial Peripheral Interface (SPI) of air pressure collecting unit MS5607 digital type air gauge and processor module SPI) links to each other, and power end links to each other with the 3.3V voltage conversion circuit.
The model of said ZigBee wireless communication module is HZ2012; Universal asynchronous serial received/the transmitter of this module and processor module (Universal Asynchronous Receiver/Transmitter; UART) interface links to each other, and power end links to each other with the 3.3V voltage conversion circuit.
Said processor module is a core with processor LPC2109FBD64/01, has built reset circuit, crystal oscillating circuit, jtag circuit and ISP circuit respectively in its periphery.And each power pins of processor all is connected to moves back lotus root electric capacity, and reset circuit adopts the special-purpose chip MAX811S that resets.The power end of processor links to each other with 3.3V voltage conversion circuit, 1.8V voltage conversion circuit; Processor module SPI interface links to each other with the air pressure collecting unit; The I of processor module
2C interface links to each other with the humiture collection unit; The UART interface of processor module links to each other with the ZigBee wireless communication module.
The present invention compares and prior art, has following advantage:
1, equipment is easy to use, and monitoring range is wide.This equipment can be arranged in the place that temporarily is not easy to lay the CAN bus, the data of wireless sensor node around ability surrounding being monitored parameter and the relaying.
2, equipment operation is low in energy consumption.The software and hardware of node device all adopts low power dissipation design, can work long hours at the technology scene.
3, the device data processing speed is fast, and the upgrading potentiality are big.The present invention has adopted the high-performance processor of ARM7 kernel, and data-handling capacity is strong, and peripheral hardware is abundant on the sheet of processor, and the upgrading potentiality are big.
4, equipment cost is low.With respect to the method for in complex environment, laying the CAN bus, cost of the present invention is cheaper.
5, apparatus adaptability is strong.Each parts of node device all adopt the device that meets the technical grade standard, under rugged surroundings, have stronger adaptability; Take into full account moistureproof, anticorrosion, explosion-proof, and factor such as essential safety, adopt the design of degree of protection IP66, explosive-proof grade Ex ia IICT6, the equipment viability after the accident that makes takes place is strong.
Description of drawings
Fig. 1 is power management module circuit theory diagrams of the present invention;
Fig. 2 is environmental parameter acquisition module circuit theory diagrams of the present invention;
Fig. 3 is ZigBee wireless communication module circuit theory diagrams of the present invention;
Fig. 4 is processor module circuit theory diagrams of the present invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is done and to further describe:
As shown in Figure 1, power management module comprises 7.4V lithium battery, 5V voltage conversion circuit, 3.3V voltage conversion circuit, 1.8V voltage conversion circuit.7.4V the minus earth of lithium battery, positive pole links to each other with 2 pins of single-pole double-throw switch (SPDT) S1, and 3 pins of single-pole double-throw switch (SPDT) S1 are unsettled, and 1 pin links to each other with diode D1 anode, and 3 pins of the negative electrode of D1 and power supply chip U2 link to each other.3 pins of the positive pole of tantalum capacitor C 23 and power supply chip U2 link to each other minus earth in the 5V voltage conversion circuit; The 1 pin ground connection of power supply chip U2, the positive pole of 2 pins and tantalum capacitor C 24, the anode of power light DS1 link to each other; The equal ground connection of the negative electrode of the negative pole of tantalum capacitor C 24, power light DS1; 2 pins of power supply chip U2 link to each other with 3 pins of power supply chip U3,3 pins of power supply chip U4 respectively.3.3V 3 pins of an end of capacitor C 7 and power supply chip U3 link to each other other end ground connection in the voltage conversion circuit; The 1 pin ground connection of power supply chip U3, the positive pole of 2 pins and tantalum capacitor C 9, the anode of power light DS2 link to each other; The equal ground connection of the negative electrode of the negative pole of tantalum capacitor C 9, power light DS2.1.8V 3 pins of the U4 of an end of capacitor C 8 and power supply chip link to each other in the voltage conversion circuit, other end ground connection; The 1 pin ground connection of power supply chip U4, the positive pole of 2 pins and tantalum capacitor C 10, the anode of power light DS3 link to each other; The equal ground connection of the negative electrode of the negative pole of tantalum capacitor C 10, power light DS3.
As shown in Figure 2, the environmental parameter acquisition module comprises humiture collection unit and air pressure collecting unit.1 pin of the core digital temperature-humidity sensor U8 of humiture collection unit and 26 pins of processor link to each other, and 22 pins of 6 pins and processor link to each other; 5 pins of digital temperature-humidity sensor U8 link to each other with the 3.3V voltage conversion circuit, 2 pin ground connection, and an end of capacitor C 32 links to each other other end ground connection with 5 pins of digital temperature-humidity sensor U8; 3,4 pins of digital temperature-humidity sensor U8 are all unsettled.6 pins of the digital baroceptor U7 of air pressure collecting unit core and 30 pins of processor link to each other, 29 pins of 7 pins and processor link to each other, 27 pins of 8 pins and processor link to each other; 4 pins of digital baroceptor U7,5 pins all link to each other with 1 pin of processor; 1 pin of digital baroceptor U7 links to each other with the 3.3V voltage conversion circuit, 2 pins, the equal ground connection of 3 pins; One end of capacitor C 12 links to each other with 1 pin of digital baroceptor U7, and 2 pins of the other end and digital baroceptor U7 link to each other.
As shown in Figure 3,13 pins of ZigBee wireless communication module U12,15 pins, 17 pins all link to each other with the 3.3V voltage conversion circuit; 21 pins of ZigBee wireless communication module U12,23 pins, 25 pins, the equal ground connection of 27 pins; 18 pins of ZigBee wireless communication module U12 and 19 pins of processor link to each other, and 21 pins of 20 pins and processor link to each other, and all the other pins are all unsettled.
As shown in Figure 4, the core of processor module is processor U1, also comprises reset circuit, crystal oscillating circuit, jtag circuit, ISP circuit and moves back lotus root electric capacity.57 pins of the core processor U1 of processor module link to each other with 2 pins of the chip U5 that resets.The reset 1 pin ground connection of chip U5,4 pins link to each other with the 3.3V voltage conversion circuit, and an end of capacitor C 11 is connected with 1 pin of the chip that resets, and 4 pins of an other end and the chip that resets link to each other; Reset 3 pins of chip and the end of reset switch S2 links to each other reset switch S2 other end ground connection.61 pins, 62 pins of processor U1 link to each other with crystal oscillating circuit respectively.The two ends of crystal oscillator Y1 resistance R 3 of parallel connection makes system's starting of oscillation more easily in the crystal oscillating circuit; The end of capacitor C 1, C2 links to each other with crystal oscillator respectively in the crystal oscillating circuit, the equal ground connection of the other end.The jtag interface of processor links to each other with connector JP1; Wherein 3 pins of 20 pins of processor and connector JP1 link to each other, and 11 pins of 24 pins and connector JP1 link to each other, and 7 pins of 52 pins and connector JP1 link to each other; 9 pins of 56 pins and connector JP1 link to each other; 15 pins of 57 pins and connector JP1 link to each other, and 5 pins of 60 pins and connector JP1 link to each other, and 13 pins of 64 pins and connector JP1 link to each other; 1 pin of connector JP1,2 pins all link to each other with the 3.3V voltage conversion circuit, and 17 pins, 19 pins are all unsettled, the equal ground connection of all the other pins; One end of resistance R 2 links to each other other end ground connection with 11 pins of connector JP1.1 pin of processor ISP interface 41 pins and connector JP2 links to each other, the 2 pin ground connection of connector JP2; One end of resistance R 1 links to each other with 1 pin of connector JP2, and an other end of resistance R 1 links to each other with the 3.3V voltage conversion circuit.Move back in the lotus root capacitive part, an end of capacitor C 16 and 17 pins of processor link to each other other end ground connection; One end of capacitor C 17 and 49 pins of processor link to each other other end ground connection; One end of capacitor C 18 and 63 pins of processor link to each other other end ground connection; One end of capacitor C 19 and 7 pins of processor link to each other other end ground connection; One end of capacitor C 20 and 23 pins of processor link to each other other end ground connection; One end of capacitor C 21 and 43 pins of processor link to each other other end ground connection; One end of capacitor C 22 and 51 pins of processor link to each other other end ground connection.
The course of work of the present invention is: the single-pole double-throw switch (SPDT) S1 that closes, and the 7.4V supply voltage of lithium battery output converts 5V voltage into through the 5V voltage conversion circuit, for 3.3V voltage conversion circuit, 1.8V voltage conversion circuit provide power supply; 3.3V voltage conversion circuit is processor module, humiture collection unit, air pressure collecting unit power supply is provided; 1.8V voltage conversion circuit is a processor power supply is provided.With equipment layout behind the technology scene; Equipment can be by humiture collection unit and the on-the-spot environmental parameter of the automatic collection technology of air pressure collecting unit; Through the ZigBee wireless communication module the above-mentioned information that collects is sent to contiguous wireless sensor node or CAN bus sensors node then, simultaneously this node self also can relaying near the data of wireless sensor node.
The invention provides a kind of portable wireless sensor node that can be used for the chemical industry security monitoring, this node can be used for monitoring temporary transient inconvenience and lays CAN bus local environmental parameter and device parameter, and wireless sensor node data around the ability relaying.
Claims (1)
1. can be used for the portable wireless sensor node of chemical industry security monitoring, comprise power management module, the environmental parameter acquisition module, ZigBee wireless communication module and processor module is characterized in that:
Described power management module comprises 7.4V lithium battery, 5V voltage conversion circuit, 3.3V voltage conversion circuit, 1.8V voltage conversion circuit; The minus earth of lithium battery, positive pole links to each other with 2 pins of single-pole double-throw switch (SPDT) S1, and 3 pins of single-pole double-throw switch (SPDT) S1 are unsettled, and 1 pin links to each other with diode D1 anode, and 3 pins of the negative electrode of D1 and power supply chip U2 link to each other; 3 pins of the positive pole of tantalum capacitor C 23 and power supply chip U2 link to each other minus earth in the 5V voltage conversion circuit; The 1 pin ground connection of power supply chip U2, the positive pole of 2 pins and tantalum capacitor C 24, the anode of power light DS1 link to each other; The equal ground connection of the negative electrode of the negative pole of tantalum capacitor C 24, power light DS1; 2 pins of power supply chip U2 link to each other with 3 pins of power supply chip U3,3 pins of power supply chip U4 respectively; 3.3V 3 pins of an end of capacitor C 7 and power supply chip U3 link to each other other end ground connection in the voltage conversion circuit; The 1 pin ground connection of power supply chip U3, the positive pole of 2 pins and tantalum capacitor C 9, the anode of power light DS2 link to each other; The equal ground connection of the negative electrode of the negative pole of tantalum capacitor C 9, power light DS2; 1.8V 3 pins of the U4 of an end of capacitor C 8 and power supply chip link to each other in the voltage conversion circuit, other end ground connection; The 1 pin ground connection of power supply chip U4, the positive pole of 2 pins and tantalum capacitor C 10, the anode of power light DS3 link to each other; The equal ground connection of the negative electrode of the negative pole of tantalum capacitor C 10, power light DS3;
Described environmental parameter acquisition module comprises humiture collection unit and air pressure collecting unit; 1 pin of the core digital temperature-humidity sensor U8 of humiture collection unit and 26 pins of processor link to each other, and 22 pins of 6 pins and processor link to each other; 5 pins of digital temperature-humidity sensor U8 link to each other with the 3.3V voltage conversion circuit, 2 pin ground connection, and an end of capacitor C 32 links to each other other end ground connection with 5 pins of digital temperature-humidity sensor U8; 3,4 pins of digital temperature-humidity sensor U8 are all unsettled; 6 pins of the digital baroceptor U7 of air pressure collecting unit core and 30 pins of processor link to each other, 29 pins of 7 pins and processor link to each other, 27 pins of 8 pins and processor link to each other; 4 pins of digital baroceptor U7,5 pins all link to each other with 1 pin of processor; 1 pin of digital baroceptor U7 links to each other with the 3.3V voltage conversion circuit, 2 pins, the equal ground connection of 3 pins; One end of capacitor C 12 links to each other with 1 pin of digital baroceptor U7, and 2 pins of the other end and digital baroceptor U7 link to each other;
13 pins of described ZigBee wireless communication module U12,15 pins, 17 pins all link to each other with the 3.3V voltage conversion circuit; 21 pins of ZigBee wireless communication module U12,23 pins, 25 pins, the equal ground connection of 27 pins; 18 pins of ZigBee wireless communication module U12 and 19 pins of processor link to each other, and 21 pins of 20 pins and processor link to each other, and all the other pins are all unsettled;
The core of described processor module is processor U1, also comprises reset circuit, crystal oscillating circuit, jtag circuit, ISP circuit and moves back lotus root electric capacity; 57 pins of the core processor U1 of processor module link to each other with 2 pins of the chip U5 that resets; The reset 1 pin ground connection of chip U5,4 pins link to each other with the 3.3V voltage conversion circuit, and an end of capacitor C 11 is connected with 1 pin of the chip that resets, and 4 pins of an other end and the chip that resets link to each other; Reset 3 pins of chip and the end of reset switch S2 links to each other reset switch S2 other end ground connection; 61 pins, 62 pins of processor U1 link to each other with crystal oscillating circuit respectively; The two ends of crystal oscillator Y1 resistance R 3 of parallel connection makes system's starting of oscillation more easily in the crystal oscillating circuit; The end of capacitor C 1, C2 links to each other with crystal oscillator respectively in the crystal oscillating circuit, the equal ground connection of the other end; The jtag interface of processor links to each other with connector JP1; Wherein 3 pins of 20 pins of processor and connector JP1 link to each other, and 11 pins of 24 pins and connector JP1 link to each other, and 7 pins of 52 pins and connector JP1 link to each other; 9 pins of 56 pins and connector JP1 link to each other; 15 pins of 57 pins and connector JP1 link to each other, and 5 pins of 60 pins and connector JP1 link to each other, and 13 pins of 64 pins and connector JP1 link to each other; 1 pin of connector JP1,2 pins all link to each other with the 3.3V voltage conversion circuit, and 17 pins, 19 pins are all unsettled, the equal ground connection of all the other pins; One end of resistance R 2 links to each other other end ground connection with 11 pins of connector JP1; 1 pin of processor ISP interface 41 pins and connector JP2 links to each other, the 2 pin ground connection of connector JP2; One end of resistance R 1 links to each other with 1 pin of connector JP2, and an other end of resistance R 1 links to each other with the 3.3V voltage conversion circuit; Move back in the lotus root capacitive part, an end of capacitor C 16 and 17 pins of processor link to each other other end ground connection; One end of capacitor C 17 and 49 pins of processor link to each other other end ground connection; One end of capacitor C 18 and 63 pins of processor link to each other other end ground connection; One end of capacitor C 19 and 7 pins of processor link to each other other end ground connection; One end of capacitor C 20 and 23 pins of processor link to each other other end ground connection; One end of capacitor C 21 and 43 pins of processor link to each other other end ground connection; One end of capacitor C 22 and 51 pins of processor link to each other other end ground connection.
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| CN 201110136469 CN102305641B (en) | 2011-05-25 | 2011-05-25 | Portable wireless sensor node for chemical safety monitoring |
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| CN 201110136469 CN102305641B (en) | 2011-05-25 | 2011-05-25 | Portable wireless sensor node for chemical safety monitoring |
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| CN102305641B CN102305641B (en) | 2013-03-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103116008A (en) * | 2013-03-05 | 2013-05-22 | 杭州电子科技大学 | Wireless sensor network-based drinking water safety monitoring device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101281187A (en) * | 2008-04-08 | 2008-10-08 | 杭州电子科技大学 | Water environment monitoring node based on ZigBee wireless technique |
| CN101714287A (en) * | 2009-11-26 | 2010-05-26 | 杭州电子科技大学 | Air quality monitoring node based on ZigBee wireless technology |
| CN201765687U (en) * | 2010-08-31 | 2011-03-16 | 中国农业大学 | Zigbee farmland wireless sensor node system |
| CN202183876U (en) * | 2011-05-25 | 2012-04-04 | 杭州电子科技大学 | Portable wireless sensor node |
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- 2011-05-25 CN CN 201110136469 patent/CN102305641B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101281187A (en) * | 2008-04-08 | 2008-10-08 | 杭州电子科技大学 | Water environment monitoring node based on ZigBee wireless technique |
| CN101714287A (en) * | 2009-11-26 | 2010-05-26 | 杭州电子科技大学 | Air quality monitoring node based on ZigBee wireless technology |
| CN201765687U (en) * | 2010-08-31 | 2011-03-16 | 中国农业大学 | Zigbee farmland wireless sensor node system |
| CN202183876U (en) * | 2011-05-25 | 2012-04-04 | 杭州电子科技大学 | Portable wireless sensor node |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103116008A (en) * | 2013-03-05 | 2013-05-22 | 杭州电子科技大学 | Wireless sensor network-based drinking water safety monitoring device |
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