CN102384764A - Portable wireless sensor node capable of being used in chemical engineering safety monitoring - Google Patents
Portable wireless sensor node capable of being used in chemical engineering safety monitoring Download PDFInfo
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- CN102384764A CN102384764A CN2011101364887A CN201110136488A CN102384764A CN 102384764 A CN102384764 A CN 102384764A CN 2011101364887 A CN2011101364887 A CN 2011101364887A CN 201110136488 A CN201110136488 A CN 201110136488A CN 102384764 A CN102384764 A CN 102384764A
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Abstract
The invention relates to a portable wireless sensor node capable of being used in chemical engineering safety monitoring, which comprises a power supply management module, a parameter acquisition module, a GPS location module, a ZigBee wireless communication module and a processor module, wherein the power supply management module comprises a 7.4V lithium battery, a 5V voltage conversion circuit, a 3.3V voltage conversion circuit and a 1.8V voltage conversion circuit; the parameter acquisition module comprises a temperature and humidity acquisition unit, a pressure acquisition unit and a physiological information acquisition unit; the GPS location module comprises an SPI/UART (Single Program Initiation/ Universal Asynchronous Receiver/Transmitter) conversion circuit and a GPS module of QE-GPS91; and the processor module uses a processor LPC2109FBD64/01 as a core. The invention has the advantages of convenience for use and 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 carry-on 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 carry-on wireless sensor node of chemical industry security monitoring based on the ZigBee wireless technology.This node can be carried, and can be used for monitoring staff's position, vital signs and surrounding environment parameter.
The concrete technical scheme that the present invention takes is:
The carry-on wireless sensor node that can be used for the chemical industry security monitoring comprises power management module, parameter acquisition module, GPS locating 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.7.4V 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, parameter acquisition module and GPS locating module 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, it is output as processor module, parameter acquisition module and ZigBee wireless communication module power supply is provided; 1.8V the core of voltage conversion circuit is a SPX1117M3-1.8 low pressure difference linearity stabilized voltage supply chip, it is output as processor module power supply is provided.
Said parameter acquisition module comprises humiture collection unit, air pressure collecting unit and physiologic information 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 3.3V voltage conversion circuit output terminal; The universal asynchronous receiving-transmitting of physiologic information collecting unit OEM001 and processor module (Universal Asynchronous Receiver/Transmitter, UART) interface links to each other, and power end links to each other with the 5.0V voltage conversion circuit.
Said GPS locating module comprises that SPI/UART change-over circuit and model are the GPS module of QE-GPS91.The core of SPI/UART change-over circuit is the SC16IS750 chip, and the SPI interface conversion that is used for processor module is the UART interface.The SPI interface of the SPI interface & processor module of SPI/UART change-over circuit links to each other, and the UART interface links to each other with the GPS module, and power end links to each other with the 3.3V voltage conversion circuit; The power end of GPS module links to each other with the 5.0V voltage conversion circuit.
The model of said ZigBee wireless communication module is HZ2012, and the UART interface of this module and processor module 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 has been carried out moving back lotus root handled, 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; Two SPI interfaces of processor module link to each other with GPS locating module, air pressure collecting unit respectively; The I of processor module
2C interface links to each other with the humiture collection unit; Two UART interfaces of processor module link to each other with physiologic information acquisition module, ZigBee wireless communication module respectively.
The present invention mainly contains following advantage than prior art:
1, equipment is easy to use, and monitoring range is wide.Node device can be carried the technology scene that gets into.Node device can be realized the monitoring of interior environmental parameter in a big way through the staff in on-the-spot the moving of technology on a large scale.
2, various environmental parameters can be gathered, carrier's vital signs can be monitored.On-the-spot air pressure, humidity and the temperature parameter of collection technology in real time.Carrier's vital signss such as blood oxygen saturation, body temperature and pulse can be monitored, and staff's position can be located.
3, equipment operation is low in energy consumption.The software and hardware of node device all adopts low power dissipation design, can work long hours.
4, 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.
5, apparatus adaptability is strong.Each parts of node device all adopt the device that meets the technical grade standard; Under rugged surroundings, has stronger adaptability; And take into full account protection against the tide, 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 acquisition module circuit theory diagrams of the present invention;
Fig. 3 is GPS locating module circuit theory diagrams of the present invention;
Fig. 4 is ZigBee wireless communication module circuit theory diagrams of the present invention;
Fig. 5 is processor module circuit theory diagrams of the present invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is further described.
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 parameter acquisition module comprises humiture collection unit, air pressure collecting unit and physiologic information 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 6 pins link to each other with processor 22 pins; 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 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 the other end links to each other with 2 pins of digital baroceptor U7 sensor.1 pin of physiologic information collecting unit U10 with link to each other with 19 pins of processor, 21 pins of 2 pins and processor link to each other, 3 pin ground connection, 4 pins link to each other with the 5.0V voltage conversion circuit.
As shown in Figure 3, the GPS locating module comprises SPI/UART change-over circuit and GPS module.SPI/UART change-over circuit core is SIP/UART conversion chip U9; 5 pins of this chip link to each other with 2 pins of crystal oscillator Y2,1 pin of 6 pins and crystal oscillator Y2 links to each other; The two ends of crystal oscillator Y2 connect the end of capacitor C 13, C14 respectively, the equal ground connection of the other end of capacitor C 13, C14; 13 pins of SIP/UART conversion chip U9 link to each other with the 3.3V voltage conversion circuit, 19 pin ground connection; Move back the end of lotus root capacitor C 29, C30 and 13 pins of SIP/UART conversion chip U9 and link to each other the equal ground connection of the other end; 14 pins of SIP/UART conversion chip U9 and 46 pins of processor link to each other; 10 pins of SIP/UART conversion chip U9 link to each other with processor 54 pins, and 53 pins of 11 pins and processor link to each other, and 47 pins of 12 pins and processor link to each other; 9 pins of SIP/UART conversion chip U9 and 2 pins of processor link to each other, 8 pin ground connection, and reset pin 57 pins of 4 pins and processor link to each other; 2 pins of SIP/UART conversion chip U9 link to each other with 5 pins of GPS module, and 3 pins of 3 pins and GPS module link to each other.1 pin of GPS module links to each other with the 5V voltage conversion circuit, 7 pin ground connection, and all the other pins are all unsettled.
As shown in Figure 4, ZigBee wireless communication module 13 pins, 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 33 pins of processor link to each other, and 34 pins of 20 pins and processor link to each other, and all the other pins are all unsettled.
As shown in Figure 5, 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 1 pin of reset switch S2 links to each other the 2 pin ground connection of reset switch S2.61 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 and 3.3V voltage conversion circuit link to each other, 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: 7.4V supply voltage that lithium battery provides is reduced to behind the 5V voltage through the 5V voltage conversion circuit and for GPS locating module and physiologic information collecting unit, 3.3V voltage conversion circuit, 1.8V voltage conversion circuit power supply is provided; 3.3V voltage conversion circuit is processor module, air pressure collecting unit and humiture collection unit power supply is provided; 1.8V voltage conversion circuit is a processor module power supply is provided; The entire equipment circuit is by single-pole double-throw switch (SPDT) S1 control break-make.It is on-the-spot that the site operation personnel carries this node device to technology, obtains technology site environment parameter in real time through humiture collection unit, air pressure collecting unit behind the opening device; This equipment obtains operating personnel's position and physiological parameter through GPS locating module and physiologic information collecting unit simultaneously.Each parameter that equipment obtains is sent to contiguous wireless sensor node or CAN bus sensors node through the ZigBee wireless communication module at last; These parameters can in time be monitored field personnel's the vital sign and the situation of production scene, and the emergency management and rescue scheme of design of High Efficiency provides Back ground Information when having an accident.
The invention provides a kind of carry-on wireless sensor node that can be used for the chemical industry security monitoring; This node can be carried to technology field monitoring environmental parameter by the staff; But this equipment monitoring personnel's physiological parameter simultaneously is for operating personnel's safety provides safeguard.
Claims (1)
1. the carry-on wireless sensor node that can be used for the chemical industry security monitoring comprises power management module, parameter acquisition module, GPS locating module, ZigBee wireless communication module and processor module, it 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; 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;
Described parameter acquisition module comprises humiture collection unit, air pressure collecting unit and physiologic information 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 6 pins link to each other with processor 22 pins; 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 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 the other end links to each other with 2 pins of digital baroceptor U7 sensor; 1 pin of physiologic information collecting unit U10 with link to each other with 19 pins of processor, 21 pins of 2 pins and processor link to each other, 3 pin ground connection, 4 pins link to each other with the 5.0V voltage conversion circuit;
Described GPS locating module comprises SPI/UART change-over circuit and GPS module; SPI/UART change-over circuit core is SIP/UART conversion chip U9; 5 pins of this chip link to each other with 2 pins of crystal oscillator Y2,1 pin of 6 pins and crystal oscillator Y2 links to each other; The two ends of crystal oscillator Y2 connect the end of capacitor C 13, C14 respectively, the equal ground connection of the other end of capacitor C 13, C14; 13 pins of SIP/UART conversion chip U9 link to each other with the 3.3V voltage conversion circuit, 19 pin ground connection; Move back the end of lotus root capacitor C 29, C30 and 13 pins of SIP/UART conversion chip U9 and link to each other the equal ground connection of the other end; 14 pins of SIP/UART conversion chip U9 and 46 pins of processor link to each other; 10 pins of SIP/UART conversion chip U9 link to each other with processor 54 pins, and 53 pins of 11 pins and processor link to each other, and 47 pins of 12 pins and processor link to each other; 9 pins of SIP/UART conversion chip U9 and 2 pins of processor link to each other, 8 pin ground connection, and reset pin 57 pins of 4 pins and processor link to each other; 2 pins of SIP/UART conversion chip U9 link to each other with 5 pins of GPS module, and 3 pins of 3 pins and GPS module link to each other; 1 pin of GPS module links to each other with the 5V voltage conversion circuit, 7 pin ground connection, and all the other pins are all unsettled;
Described ZigBee wireless communication module 13 pins, 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 33 pins of processor link to each other, and 34 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 1 pin of reset switch S2 links to each other the 2 pin ground connection of reset switch S2; 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 and 3.3V voltage conversion circuit link to each other, 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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Application publication date: 20120321 |