CN202395998U - Wireless sensor network node - Google Patents
Wireless sensor network node Download PDFInfo
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- CN202395998U CN202395998U CN2012200162271U CN201220016227U CN202395998U CN 202395998 U CN202395998 U CN 202395998U CN 2012200162271 U CN2012200162271 U CN 2012200162271U CN 201220016227 U CN201220016227 U CN 201220016227U CN 202395998 U CN202395998 U CN 202395998U
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Abstract
The utility model discloses a wireless sensor network node, and relates to a wireless sensor network node operating in a low-temperature environment and used for solving the problems that the existing wireless sensor network node has no operating system, is limited in data processing capability and is not low-temperature resistant. The wireless sensor network node comprises a power supply unit, a main control unit, a sensor module, a wireless communication module, an external interface unit, an internal interface unit and a data storage unit, wherein the power supply unit comprises a battery pack; the power supply unit supplies power for the main control unit, the sensor module, the wireless communication module and the data storage unit respectively; chips and electronic elements, which are used in each unit module, are packaged by pasters; and the minimum operation temperature of the chips and the electronic elements achieves minus 30 DEG C. The wireless sensor network node provided by the utility model is used for collecting, detecting and processing the information in the low-temperature environment.
Description
Technical field
The utility model relates to a kind of wireless sensor network node, is specifically related to a kind of wireless sensor network node that works in low temperature environment.
Background technology
Wireless sensor network is an important research field of present Chinese scholars extensive concern.It combines advanced technologies such as microelectric technique, embedded technology, modern network and wireless communication technology, distributed information processing; The all-environment information in monitoring in real time, perception or the collection network distributed areas or the information of monitoring target; And said information handled; Obtain detailed and process information accurately, send the user to.Wireless sensor network can be widely used in disaster early warning and fields such as relief, environment control, national defense and military, Industry Control, city management, Long-distance Control, intelligent building, transportation and telematic services.
Wireless sensor network is made up of several separate nodes, and especially at low temp area, the application value of wireless sensor network is great, as to the environmental monitoring in forest zone etc.
In practical application; Wireless sensor network node adopts storage battery power supply entrained on the node usually; Yet the electric weight that is used to keep this node operate as normal is very limited; Especially when wireless sensor network node is in low temperature environment, serious to the battery life influence, the electronic component power consumption also increases thereupon.For prolonging the operating time of wireless sensor node, must reduce the energy consumption of node each several part as much as possible, energy consumption is low more to mean that the life cycle of wireless sensor node is long more.
And existing node also has the defective that working life is short, mostly adopt the processor of no operating system limited as the main control chip ability of data processing, can't manage node each several part state.
The utility model content
The purpose of the utility model is not have operating system, limited, not low temperature resistant this problem of ability of data processing for solving existing wireless sensor network node, and a kind of wireless sensor network node is provided.
A kind of wireless sensor network node, it comprises power supply unit, main control unit, sensor assembly, wireless communication module and data storage cell,
Described power supply unit comprises a Battery pack group, and said battery pack is made up of a multisection lithium battery series connection or a joint lithium battery, and power supply unit is supplied power to main control unit, sensor assembly, wireless communication module and data storage cell respectively;
The sensor signal receiving terminal of described main control unit is connected with the sensor signal transmitting terminal of sensor assembly; The communication signal receiving end/sending end of described main control unit is connected with the communication signal receiving end/sending end of wireless communication module; The data-signal receiving end/sending end of described Main Control Unit is connected with the data-signal receiving end/sending end of data storage cell;
Chip that uses in described power supply unit, main control unit, sensor assembly, wireless communication module and the data storage cell and electronic component adopt the paster encapsulation, and the minimum operating temperature of said chip and electronic component reaches-30 ℃.
Further, described power supply unit also comprises the voltage stabilizing chip, and battery pack is supplied power to main control unit, sensor assembly, wireless communication module and data storage cell through the voltage stabilizing chip.
Further, the processor adopting ARM9 microprocessor of said main control unit.
Further, on the processor of said main control unit operation operating system, said operating system are arranged is a kind of among embedded OS TinyOS, WindowsCE, UcLinux, VxWorks, Linux, the UC/OS.
Further, said wireless communication module adopts radio frequency chip SX1212 to realize.
Further, a kind of wireless sensor network node also comprises external interface unit and internal interface unit, and the external interface signals input/output terminal of described main control unit is connected with the external interface signals input/output terminal of external interface unit;
The internal interface signal input output end of described main control unit is connected with the internal interface signal input output end of internal interface unit;
Power supply unit is to external interface unit and internal interface unit power supply.
Further, described external interface unit comprises one or more in USB Host, USB Slave, USB and the Jtag interface.
Further; A kind of wireless sensor network node; It also comprises power supply adaptor, and the voltage output end of said power supply adaptor is connected with the voltage input end of main control unit, sensor assembly, wireless communication module, data storage cell, external interface unit and internal interface unit.
It is the node power supply that the described power supply unit of the utility model adopts a Battery pack group, and described battery pack is made up of a few joint lithium battery series connection or single-unit lithium battery, utilizes the voltage stabilizing chip to guarantee that node obtains stable operating voltage.
Low temperature environment is very serious to the battery life influence, and some electronic component power consumptions simultaneously also increase with decrease of temperature.Said chip of the utility model and electronic component all select CMOS technology chip, can satisfy the requirement that low-power consumption can reach high integration again like this.The normal working temperature scope of said chip and electronic component is, minimum operating temperature reaches-30 ℃, and maximum operating temperature reaches 50 ℃.
The advantage of the utility model:
Along with the increase of needs detection amount of information, following wireless sensor network node can develop to the direction of intellectuality, high data-handling capacity, low energy consumption.When prolonging the node life-span; Be implemented in operation system on the modal processor; This will have revolutionary meaning in the extensive use of low temp area to wireless sensor network; And meet construction low-carbon (LC) society, and realize green requirement of calculating, have great practical value and economic worth.
Description of drawings
Fig. 1 is the structural representation of embodiment one described node; Fig. 2 is the structural representation of embodiment two described nodes; Fig. 3 is the conversion of node operating state described in the embodiment nine sketch map.
Embodiment
Embodiment one: below in conjunction with Fig. 1 this execution mode is described, this execution mode power supply unit 1, main control unit 2, sensor assembly 3, wireless communication module 4 and data storage cell 5,
Described power supply unit 1 comprises a Battery pack group 1-2, and said battery pack 1-2 is made up of a multisection lithium battery series connection or a joint lithium battery, and power supply unit 1 is supplied power to main control unit 2, sensor assembly 3, wireless communication module 4 and data storage cell 5 respectively;
The sensor signal receiving terminal of described main control unit 2 is connected with the sensor signal transmitting terminal of sensor assembly 3; The communication signal receiving end/sending end of described main control unit 2 is connected with the communication signal receiving end/sending end of wireless communication module 4; The data-signal receiving end/sending end of described Main Control Unit 2 is connected with the data-signal receiving end/sending end of data storage cell 5;
Chip that uses in described power supply unit 1, main control unit 2, sensor assembly 3, wireless communication module 4 and the data storage cell 5 and electronic component adopt the paster encapsulation, and the minimum operating temperature of said chip and electronic component is no more than-30～50 ℃ scope.
The communication signal that the described main control unit 2 of this execution mode is used for sending according to wireless communication module 4 receives, handles and send the sensor signal that sensor assembly sends;
Described sensor assembly 3 is used for image data, and gives main control unit 2 with the data delivery that collects;
Described wireless communication module 4 is used for communicating with the wireless communication module 4 of base station and/or other wireless sensor network nodes; Wireless communication module 4 will be from the base station and/or the communication signal that receives of other wireless sensor network nodes be transferred to main control unit 2 and handle, the signal after wireless communication module 4 also will be handled from main control unit 2 send to base station and/or other wireless sensor network nodes;
Described data storage cell 5 is used to store the data after main control unit 2 receives or handles.
Low temperature environment is very serious to the battery life influence, and some electronic component power consumptions simultaneously also increase with decrease of temperature.
In this execution mode, said chip and electronic component all select CMOS technology chip, can satisfy the requirement that low-power consumption can reach high integration again like this.The normal working temperature scope of said chip and electronic component is, minimum operating temperature reaches-30 ℃, and maximum operating temperature reaches 50 ℃.
Along with the increase of needs detection amount of information, following wireless sensor network node can develop to the direction of intellectuality, high data-handling capacity, low energy consumption.This will have revolutionary meaning in the extensive use of low temp area to wireless sensor network, and meet construction low-carbon (LC) society, realize green requirement of calculating, and have great practical value and economic worth.
Embodiment two: this execution mode is described below in conjunction with Fig. 2; This execution mode is with the difference of execution mode one; Described power supply unit 1 also comprises voltage stabilizing chip 1-1, and battery pack 1-2 supplies power to main control unit 2, sensor assembly 3, wireless communication module 4 and data storage cell 5 through voltage stabilizing chip 1-1.
In this execution mode, the output voltage of every Battery pack group 1-2 is not less than 5V, utilizes voltage stabilizing chip 1-1 to guarantee that node obtains stable operating voltage.
Embodiment three: this execution mode is the processor adopting ARM9 microprocessor of said main control unit 2 with the difference of execution mode one.
The processor adopting of the said main control unit 2 of this execution mode is low in energy consumption, processing speed is fast, integrated level is high and have the ARM9 microprocessor of MMU (Memory Management Unit).
Embodiment four: this execution mode is with the difference of execution mode three; Operating system, said operating system are arranged is a kind of among embedded OS TinyOS, WindowsCE, UcLinux, VxWorks, Linux, the UC/OS in operation on the processor of said main control unit 2.
The Linux embedded OS that the described a kind of wireless sensor network node of this execution mode can select to support multiple architecture, be convenient to transplant, application development is simple, increase income realizes, adopt said Linux embedded OS have system stability, freely, safely, be suitable for the secondary development ability, better support host-host protocol and satisfy the advantage that good real time performance requires.
Embodiment five: this execution mode is that with the difference of execution mode one said wireless communication module 4 adopts radio frequency chip SX1212 to realize.
The said wireless communication module 4 of this execution mode adopts and is suitable for battery powered novel radio transceiving chip, and promptly radio frequency chip SX1212 realizes, uses radio frequency chip SX1212 the parameter value of revising serial ports speed, transmitting power and radio frequency speed can be set in real time; Said radio frequency chip SX121 received current maximum under accepting state is 3.2mA, and the inferior battery of the lithium of a joint 3.6V/3.6Ah can be worked more than 10 years in theory; It is available that said wireless communication module 4 has four kinds of mode of operations, is respectively normal mode, awakening mode, battery saving mode and park mode; In addition, adopt wireless communication module 4 long transmission distance of the described radio frequency chip SX121 of this execution mode, and then the needed node number of wireless sensor network of laying unit scope is few, practices thrift cost.
Embodiment six: this execution mode is that with the difference of execution mode one it also comprises external interface unit and internal interface unit,
The external interface signals input/output terminal of described main control unit 2 is connected with the external interface signals input/output terminal of external interface unit;
The internal interface signal input output end of described main control unit 2 is connected with the internal interface signal input output end of internal interface unit;
1 pair of external interface unit of power supply unit and internal interface unit power supply.
The described external interface unit of this execution mode is used for communicating with computer; Described internal interface unit is used for communicating with sensor assembly, comprises universal input and output port, for transducer sends sensor signal interface is provided.
Embodiment seven: this execution mode is that with the difference of execution mode six described external interface unit comprises one or more in USB Host, USB Slave, USB and the Jtag interface.
The described external interface unit of this execution mode possesses abundant interface resource, and said USB Host is used to connect other external equipments that have USB interface and obtains required data from this external equipment; When said USB Slave links to each other with host computer, be used to receive instruction that host computer sends and the data that host computer is required and return to host computer; Said USB adopts serial communication protocol, is used for communicating by letter with host computer; Said Jtag interface is used to download and single-step debug.
Embodiment eight: this execution mode is with the difference of execution mode one; It also comprises power supply adaptor, and the voltage output end of said power supply adaptor is connected with the voltage input end of main control unit 2, sensor assembly 3, wireless communication module 4, data storage cell 5, external interface unit and internal interface unit.
Said power supply adaptor converts electric main the DC power supply of 5V to, is used to the node power supply.
The described a kind of wireless sensor network node of this execution mode; Also dispose a power supply adaptor; Said power supply adaptor converts the electric main of standard 220V to the DC power supply of 5V; Each module for power supply for said node comprises main control unit 2, sensor assembly, wireless communication module, external interface unit, internal interface unit and data storage cell.
The described power supply adaptor of this execution mode is used in the developing and debugging stage said node being supplied power, and under the external situation easily of power supply, said node is supplied power when also being used for field work.
Embodiment nine: this execution mode is described below in conjunction with Fig. 3; This execution mode is with the difference of execution mode one; The energy-saving distribution strategy that adopts is regulated the energy-conservation mode management node operating state of economic benefits and social benefits that combines for use dynamic power management and dynamic voltage/frequency at the processor operating system layer, and said operating state is normal condition, idle condition, resting state and deep sleep.
Under normal condition, the node processing task, when said node do not have surpass first threshold task time after, said node gets into idle condition;
Under idle condition, node power consumption is used for the frequency of external clock, and when task arrived, then node returned the normal condition Processing tasks; Otherwise after node free time surpassed second threshold value, said node got into resting state;
Under resting state, node breaks off the processor cores clock of main control unit 2, only provides clock to external equipment, and wireless communication module 4 gets into battery saving mode, if there is interruption generating to have task to arrive, then node gets into the normal condition Processing tasks; Otherwise after the node dormancy time surpassed the 3rd threshold value, said node got into deep sleep;
Under deep sleep; Node utilizes real-time clock as the wake-up interrupts source, and wireless communication module 4 gets into park mode, only real-time clock waking-up module and data storage cell 5 power consumptions; If node has task after by real-time clock waking-up; Then return the normal condition Processing tasks, if node by real-time clock waking-up after no task, then node continues deep sleep.
In this execution mode, promptly carry out task after the start of described node and handle, under normal condition, operating voltage and frequency are set according to the change dynamics of task amount.So just, dynamic voltage/frequency is regulated and include in the dynamic power management strategy.When said node is in idle condition, get rid of the power consumption that produces because of inner phase-locked loop, its power consumption only depends on the frequency of external clock.When said node is in resting state; Break off the processor cores clock; Only provide clock to peripheral hardware, external wireless communication module 4 gets into battery saving modes, has reduced the power consumption that the power consumption that produces because of processor cores and wireless communication module 4 are in normal mode under this pattern.When node is in deep sleep, only real-time clock waking-up module and data storage cell 5 power consumptions, wireless communication module 4 gets into the park mode power consumption and reaches minimum, this moment total power consumption be under the normal condition total power consumption 1/5th or lower.
Because node need be handled periodic task, so need timing wake-up, the said node of this execution mode utilizes the wake-up interrupts source of real-time clock timing as sleep pattern.If node wakes the no task in back up continuous three times, then increase the deep sleep time of real-time clock; Otherwise to wake the back task amount for three times up bigger if node is continuous, then reduces the deep sleep time of real-time clock, so just can be according to what of node task amount dynamic adjustments node sleep time.
The described node of this execution mode is realized the dynamic translation of operating state according to task and load condition.The operating state of said node combines design by the electric source modes of the processor of the mode of operation of wireless communication module 4 and tape operation system; Because the frequent switching of the operating state of node will cause power consumption to be wasted in a large number; And single operating state can't reach purpose of energy saving; Consider from the energy-conservation angle of entire system; The operating state of described node is set at normal condition, idle condition, resting state and deep sleep, can realizes dynamically conversion each other between described four operating states.
In this execution mode, said dynamic power management is used for when node is in idle condition for a long time, the operating state of adjustment processor; Said dynamic voltage/frequency is regulated and is used for the system hibernates state under during when the computational load decline of the node that detects the disposal ability of reduction processor.
The node energy consumption management is used by the economic benefits and social benefits energy-saving distribution algorithm after the most effectively dynamic voltage/frequency adjusting of two kinds of built-in terminals, the dynamic power management combination.When node was in normal condition, main application of dynamic voltage/frequency was regulated scheduling strategy, made its satisfied operation demand based on the state dynamic adjustments supply power voltage and the frequency of load, thereby between real-time and energy consumption, averaged out.Simultaneously; Utilize the overtime strategy of modified model dynamic power management to reduce energy consumption, the overtime strategy of described modified model dynamic power management is specially, and dynamically sets timeout threshold; When finding that the timeout threshold of setting causes that too much operating state is switched, then increase timeout threshold; If the frequency that operating state is switched then reduces timeout threshold in the scope that system allows.
Dynamic energy consumption management strategy at present that embedded mobile terminal is commonly used is applied on the managing power consumption of wireless sensor node after improvement; Adopt the operating state of dynamic energy consumption management strategy adjustment node; Will be significant to prolonging the node life-span, simultaneously wireless sensor network is had revolutionary meaning in the extensive use of low temp area.
Claims (8)
1. wireless sensor network node, it is characterized in that: it comprises power supply unit (1), main control unit (2), sensor assembly (3), wireless communication module (4) and data storage cell (5),
Described power supply unit (1) comprises a Battery pack group (1-2); Said battery pack (1-2) is made up of a multisection lithium battery series connection or a joint lithium battery, and power supply unit (1) is supplied power to main control unit (2), sensor assembly (3), wireless communication module (4) and data storage cell (5) respectively;
The sensor signal receiving terminal of described main control unit (2) is connected with the sensor signal transmitting terminal of sensor assembly (3); The communication signal receiving end/sending end of described main control unit (2) is connected with the communication signal receiving end/sending end of wireless communication module (4); The data-signal receiving end/sending end of described Main Control Unit (2) is connected with the data-signal receiving end/sending end of data storage cell (5);
Chip that uses in described power supply unit (1), main control unit (2), sensor assembly (3), wireless communication module (4) and the data storage cell (5) and electronic component adopt the paster encapsulation, and the minimum operating temperature of said chip and electronic component reaches-30 ℃.
2. a kind of wireless sensor network node according to claim 1 is characterized in that:
Described power supply unit (1) also comprises voltage stabilizing chip (1-1), and battery pack (1-2) is supplied power to main control unit (2), sensor assembly (3), wireless communication module (4) and data storage cell (5) through voltage stabilizing chip (1-1).
3. a kind of wireless sensor network node according to claim 1 is characterized in that:
The processor adopting ARM9 microprocessor of said main control unit (2).
4. a kind of wireless sensor network node according to claim 3 is characterized in that:
Operating system, said operating system are arranged is a kind of among embedded OS TinyOS, WindowsCE, UcLinux, VxWorks, Linux, the UC/OS in operation on the processor of said main control unit (2).
5. a kind of wireless sensor network node according to claim 1 is characterized in that:
Said wireless communication module (4) adopts radio frequency chip SX1212 to realize.
6. a kind of wireless sensor network node according to claim 1 is characterized in that: it also comprises external interface unit and internal interface unit,
The external interface signals input/output terminal of described main control unit (2) is connected with the external interface signals input/output terminal of external interface unit;
The internal interface signal input output end of described main control unit (2) is connected with the internal interface signal input output end of internal interface unit;
Power supply unit (1) is to external interface unit and internal interface unit power supply.
7. a kind of wireless sensor network node according to claim 6 is characterized in that:
Described external interface unit comprises one or more in USB Host, USB Slave, USB and the Jtag interface.
8. a kind of wireless sensor network node according to claim 1 is characterized in that: it also comprises power supply adaptor,
The voltage output end of said power supply adaptor is connected with the voltage input end of main control unit (2), sensor assembly (3), wireless communication module (4), data storage cell (5), external interface unit and internal interface unit.
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| CN2012200162271U CN202395998U (en) | 2012-01-14 | 2012-01-14 | Wireless sensor network node |
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| CN2012200162271U CN202395998U (en) | 2012-01-14 | 2012-01-14 | Wireless sensor network node |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105589377A (en) * | 2015-10-10 | 2016-05-18 | 无锡大华智慧能源有限公司 | Intelligent energy gateway/node |
| CN106060911A (en) * | 2016-07-19 | 2016-10-26 | 上海华为技术有限公司 | Radio unit (RU) hibernation and wakeup methods and node B |
| CN106327827A (en) * | 2016-08-25 | 2017-01-11 | 电子科技大学 | Wireless passive sensor network node |
| CN108318734A (en) * | 2018-03-26 | 2018-07-24 | 四川飞通系统集成有限公司 | Wisdom energy consumption of building method for early warning |
| CN108600033A (en) * | 2018-05-15 | 2018-09-28 | 哈尔滨理工大学 | A kind of wireless sensor network universal nodes and method for diagnosing faults |
-
2012
- 2012-01-14 CN CN2012200162271U patent/CN202395998U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105589377A (en) * | 2015-10-10 | 2016-05-18 | 无锡大华智慧能源有限公司 | Intelligent energy gateway/node |
| CN105589377B (en) * | 2015-10-10 | 2018-10-12 | 无锡大华智慧能源有限公司 | A kind of wisdom energy source gateway |
| CN106060911A (en) * | 2016-07-19 | 2016-10-26 | 上海华为技术有限公司 | Radio unit (RU) hibernation and wakeup methods and node B |
| CN106327827A (en) * | 2016-08-25 | 2017-01-11 | 电子科技大学 | Wireless passive sensor network node |
| CN108318734A (en) * | 2018-03-26 | 2018-07-24 | 四川飞通系统集成有限公司 | Wisdom energy consumption of building method for early warning |
| CN108318734B (en) * | 2018-03-26 | 2020-05-05 | 四川飞通系统集成有限公司 | Intelligent building energy consumption early warning method |
| CN108600033A (en) * | 2018-05-15 | 2018-09-28 | 哈尔滨理工大学 | A kind of wireless sensor network universal nodes and method for diagnosing faults |
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Granted publication date: 20120822 Termination date: 20130114 |