CN108391245A - Plug and play type wireless sensor network node - Google Patents
Plug and play type wireless sensor network node Download PDFInfo
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- CN108391245A CN108391245A CN201810095359.XA CN201810095359A CN108391245A CN 108391245 A CN108391245 A CN 108391245A CN 201810095359 A CN201810095359 A CN 201810095359A CN 108391245 A CN108391245 A CN 108391245A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/38—Services specially adapted for particular environments, situations or purposes for collecting sensor information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
Abstract
Plug and play type wireless sensor network node：Memory, keyboard, liquid crystal display, wireless communication module, data acquisition module are all connected with micro treatment module, and power supply module is liquid crystal display, wireless communication module, data acquisition module and micro treatment module provide power supply；Compared with the existing technology, plug and play type wireless sensor network node of the present invention, acquisition node of the various sensors as various monitoring systems can be connected, plug and play, without specially designing corresponding special Acquisition Circuit and developing corresponding dedicated program, system development and operating cost can be effectively saved.
Description
Technical field
The present invention relates to plug and play type wireless sensor network nodes.
Background technology
In the various application systems built using wireless sensor network, it usually needs connect miscellaneous sensing
Device, and the output signal of these sensors is divided to two kinds of analog quantity and digital quantity, has I2C types and SPI again according to interface type is different
Type etc., data acquisition circuit disunity；When building system senses layer, need to choose certain kinds for specific information collection demand
Type or the sensor of producer carry out design, plate-making, welding, programming and the debugging of sensor node；Then it carries out on this basis
Transport layer and application layer exploitation, in the process, other than development difficulty is larger, can also bring many problems, such as：Repetition is built
If doing things in his own way, development efficiency is low；Ununified application development framework and data format, poor compatibility, information cannot be effective
Shared, resource sharing capability is weaker, bad adaptability, lacks the managerial ability etc. of mass data, causes software to lack of staying power, the later stage
It safeguards and development cost is excessively huge.On the other hand, the use of the product or equipment that are designed under this framework is to user's
Technology and skill requirement are relatively high, and service level is also very limited, equipment and system input and use cost again it is excessively high so that these
New product and technology are difficult to promote, and industry development is obstructed.A kind of general wireless sensor terminal node is designed as a result, is used
Uniform data format tissus sensor information, provides public transport layer interface, it will the exploitation for upper-level system and design band
Carry out great convenience, shorten the whole development cost of system, effectively promotes the compatibility of resource sharing capability and system.
Invention content
To solve the above problems, the present invention provides plug and play type wireless sensor network node.
Technical scheme of the present invention is specially：
Wireless sensor network node sensor plug and play method：
The first step：System and wireless module initialization；
Second step：Wireless sensor network is added in wireless sensor network node request；
Third walks：Judge whether that network is added, network is not added and returns to execution second step, network is added and executes the 4th step；
4th step：To the sensor matching capture program of access；
5th step：It is pending to judge whether there is collection event etc., no event need processing system enter dormant state waiting adopt
The arrival of collection event has the 6th step of pending execution such as collection event；
6th step：Collection event is handled, the 4th step is returned after collection event processing.
Further：
The specific method is as follows for 4th step：
Processor reads keyboard state, judges the sensor type of access by key-press status and loads corresponding sensor
Capture program.
Further：Collection event processing includes sensor data acquisition described in 6th step, and sensing data is sent, sensing
Device data are shown；The sensing data is sent to be sent using unified data frame format.
Further：The sensor data acquisition carries out data acquisition by the way of poll to each sensor.
Further：The data frame format is from front to back specifically, frame head, network address, network sequence number, port
Number, link-quality, type, length, content, CRC.
Further：After wireless sensor network node sensor plug and play method system enters dormant state, adopt
Collection event is passed to system, and then system exits dormant state the 6th step of execution；The collection event is activated after being passed to system by interrupting
System exits dormant state.
A kind of memory：Store the above method.
Plug and play type wireless sensor network node, it is characterised in that：Memory, keyboard, liquid crystal display, wireless communication
Module, data acquisition module are all connected with micro treatment module, and power supply module is liquid crystal display, wireless communication module, data
Acquisition module and micro treatment module provide power supply；The micro treatment module is for executing the above method.
Further：The data acquisition module includes analog data acquisition module and numerical data acquisition module.
Further：The analog acquisition module concrete structure is that sensor accesses microprocessor mould by signal conditioning circuit
The ports ADC of block.
Compared with the existing technology, technique effect of the invention is plug and play type wireless sensor network of the present invention
Node can connect acquisition node of the various sensors as various monitoring systems, plug and play, without special design
Corresponding special Acquisition Circuit and the corresponding dedicated program of exploitation, can effectively save system development and operating cost.
Through the invention, Universal wireless sensor network nodes are designed, are acquired to build data under various application backgrounds
The Internet of things system sensing layer of demand provides facility, and unified interface is provided for transport layer, is promoted using simultaneous between layer system
Capacitive realizes real resource-sharing in turn.
Description of the drawings
Fig. 1 is the structure diagram of the present invention.
Fig. 2 is analog data acquisition module frame chart.
Fig. 3 is voltage output type sensor Acquisition Circuit schematic diagram.
Fig. 4 is current-output type sensor Acquisition Circuit schematic diagram.
Fig. 5 is numeric type sensor acquisition module schematic diagram.
Fig. 6 is data frame format figure of the present invention.
Fig. 7 is invention software flow chart.
Fig. 8 is that inventive sensor matches flow chart.
Specific implementation mode
As shown in fig. 7, wireless sensor network node sensor plug and play method：
The first step：System and wireless module initialization；
Second step：Wireless sensor network is added in wireless sensor network node request；
Third walks：Judge whether that network is added, network is not added and returns to execution second step, network is added and executes the 4th step；
4th step：To the sensor matching capture program of access；
5th step：Judgement be by there is collection event etc. pending, no event need processing system enter dormant state waiting adopt
The arrival of collection event has the 6th step of pending execution such as collection event；
6th step：Collection event is handled, the 4th step is returned after collection event processing.
As shown in figure 8, the specific method is as follows for above-mentioned 4th step：
Processor reads keyboard state, judges the sensor type of access by key-press status and loads corresponding sensor
Capture program.
Collection event processing includes sensor data acquisition described in above-mentioned 6th step, and sensing data is sent, sensor number
According to display；The sensor data acquisition carries out data acquisition by the way of poll to each sensor；Sensing data is sent out
It send and is sent using unified data frame format；As shown in fig. 6, the data frame format is from front to back specifically, frame head, net
Network address, network sequence number, port numbers, link-quality, type, length, content, CRC.
After above-mentioned wireless sensor network node sensor plug and play method system enters dormant state, there is collection event
Then system exits dormant state the 6th step of execution to incoming system；The collection event is moved back after being passed to system by interrupting activation system
Go out dormant state.
The above method is preserved using memory.
As shown in Figure 1, plug and play type wireless sensor network node, memory, keyboard, liquid crystal display, wireless communication
Module, data acquisition module are all connected with micro treatment module, and power supply module is liquid crystal display, wireless communication module, data
Acquisition module and micro treatment module provide power supply；Micro treatment module is for executing the above method.
The data acquisition module includes analog data acquisition module and numerical data acquisition module.
As shown in Fig. 2, the analog acquisition module concrete structure is sensor accesses microprocessor by signal conditioning circuit
The ports ADC of module.
The wireless communication module is carried out wireless communication using Zigbee protocol.
The micro treatment module uses CC2530 chips.
Existing wireless sensor network node poor universality, repeated construction are done things in his own way, and development efficiency is low；Do not unify
Application development framework and data format, poor compatibility, information cannot effectively share, resource sharing capability is weaker, leads to software
It lacks of staying power, later maintenance and development cost are excessively huge.On the other hand, the product that is designed under this framework or equipment
Using to user technology and skill requirement it is relatively high, service level is also very limited, equipment and system input and use cost again
It is excessively high so that these new products and technology are difficult to promote, and industry development is obstructed.
The present invention combs in order to solve the above problem and the output signal type and interface standard of specification sensor, and design is various
The general sensor data acquisition interface circuit of type, and then the general wireless sensor node based on ZigBee is designed, and set
It is the technology path and method that the present invention uses to count unified information and send format to send sensor information, specifically includes following skill
Art scheme：
Plug and play type wireless sensor network node of the present invention is by microprocessor module, data acquisition module, channel radio
Believe module, power supply module and constituted by key control and five part of display module, structural schematic diagram is as shown in Figure 1.
ZigBee-network is currently preferred wireless communication networks, has at low cost, small power consumption, networking easily advantage, according to reality
It needs that other communication networks can also be selected.In above structure, microprocessor module and wireless communication module are with TI companies
Illustrate for CC2530 chips, other are similar to microprocessor chip all in the scope of the claims of the present invention.CC2530 realizes entire section
Point sensor perception, data acquisition and timing transmit wirelessly.Data acquisition module realizes that data are adopted for connecting various sensors
Collection.It is used to control the access and transmission of sensor by key control and display module.
Specifically, the sensor can be divided into analogue type sensor according to signal output class and numeric type senses
Device；Analog sensor is divided into as voltage output type（0~5v）And current-output type（4~20ma）Two kinds；Analogue type sensor is general
Acquisition Circuit block diagram is as shown in Figure 2.Voltage output type usually can directly be connected with the AD pins of CC2530, corresponding to acquire
Circuit is as shown in Figure 3；And current-output type sensor then usually require to convert electrical current into accessed again after voltage AD input terminals into
Row analog-to-digital conversion, specific Acquisition Circuit are as shown in Figure 4.Digital sensor is divided into as switching mode, impulse type and continuous number amount
Type sensor.It is divided into as IIC interfaces and SPI interface, corresponding interface circuit according to consecutive numbers font sensor interface type
As shown in Figure 5.It is designed with corresponding Acquisition Circuit and corresponding data acquisition program for various types of sensors.It is different
It under application background, acquires physical quantity from sensor and divides, there is displacement, power, speed, temperature, flow, gas, wind speed, wind direction, wet
Degree etc..In order to realize that the compatibility between resource-sharing and system, the data frame of all the sensors information send uniform format design,
Its format is as shown in Figure 6, wherein type field coding specifies transmitting physical amount type（Temperature, humidity etc.）, facilitate upper layer gateway
It is identified and shares.
Plug and play wireless sensor node workflow of the present invention based on ZigBee, includes the following steps：
（1）According to system structure demand, the sensor of selection suitable quantity and type is connected to different data acquisition modules and connects
On mouth circuit；
（2）Each physical quantity classification is set, each sensing switch button of corresponding classification is pressed, start sensor identification and
Data acquisition program, and the corresponding data of each sensor is shown on a display screen；
（3）According to system requirements, sending cycle is arranged by button, data is assembled by unified format, starts or stops corresponding number
According to wireless transmission.
（4）According to system requirements, remove unwanted sensor, then changes the corresponding key-press status of sensor and inform micro-control
Device processed deletes the sensor information.
The general wireless sensor node software flow is as shown in fig. 7, wherein plug and play, identification sensor and intelligent
Detailed process with acquisition and transmission is as shown in Figure 8.
The beneficial effects of the present invention are：
Plug and play type wireless sensor network node of the present invention can connect various sensors as various prisons
The acquisition node of control system, plug and play, intelligent Matching, without specially designing corresponding Acquisition Circuit and developing corresponding journey
Sequence can effectively save system development and operating cost.
Through the invention, Universal wireless sensor network nodes are designed, are acquired to build data under various application backgrounds
The Internet of things system sensing layer of demand provides facility, and unified interface is provided for transport layer, is promoted using simultaneous between layer system
Capacitive realizes real resource-sharing in turn.
What has been described above is only a preferred embodiment of the present invention, it is noted that for those skilled in the art,
Under the premise of not departing from general idea of the present invention, several changes and improvements can also be made, these should also be considered as the present invention's
Protection domain.
Claims (10)
1. wireless sensor network node sensor plug and play method, it is characterised in that：
The first step：System and wireless module initialization；
Second step：Wireless sensor network is added in wireless sensor network node request；
Third walks：Judge whether that network is added, network is not added and returns to execution second step, network is added and executes the 4th step；
4th step：To the sensor matching capture program of access；
5th step：It is pending to judge whether there is collection event etc., no event need processing system enter dormant state waiting adopt
The arrival of collection event has the 6th step of pending execution such as collection event；
6th step：Collection event is handled, the 4th step is returned after collection event processing.
2. wireless sensor network node sensor plug and play method as described in claim 1, it is characterised in that：
The specific method is as follows for 4th step：
Processor reads keyboard state, judges the sensor type of access by key-press status and loads corresponding sensor
Capture program.
3. wireless sensor network node sensor plug and play method as described in claim 1, it is characterised in that：6th step
The collection event processing includes sensor data acquisition, and sensing data is sent, and sensing data is shown；The sensor number
It is sent using unified data frame format according to sending.
4. wireless sensor network node sensor plug and play method as claimed in claim 3, it is characterised in that：The biography
The acquisition of sensor data carries out data acquisition by the way of poll to each sensor.
5. wireless sensor network node sensor plug and play method as claimed in claim 3, it is characterised in that：The number
According to frame format from front to back specifically, frame head, network address, network sequence number, port numbers, link-quality, type, length, interior
Hold, CRC.
6. wireless sensor network node sensor plug and play method as described in claim 1, it is characterised in that：It is wireless to pass
After sensor sensor network node plug and play method system enters dormant state, having collection event to be passed to system, then system exits
Dormant state executes the 6th step；The collection event is passed to after system and exits dormant state by interrupting activation system.
7. a kind of memory, it is characterised in that：Store claim 1 to 6 any claim the method.
8. plug and play type wireless sensor network node, it is characterised in that：Memory, keyboard, liquid crystal display, radio communication mold
Block, data acquisition module are all connected with micro treatment module, and power supply module is liquid crystal display, wireless communication module, data are adopted
Collect module and micro treatment module provides power supply；The micro treatment module is required for perform claim described in 1 to 6 any claim
Method.
9. plug and play type wireless sensor network node as claimed in claim 8, it is characterised in that：The data acquisition module
Block includes analog data acquisition module and numerical data acquisition module.
10. plug and play type wireless sensor network node as claimed in claim 9, it is characterised in that：The analog acquisition
Module concrete structure is the ports ADC that sensor accesses micro treatment module by signal conditioning circuit.
Priority Applications (1)
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| CN201810095359.XA CN108391245A (en) | 2018-01-31 | 2018-01-31 | Plug and play type wireless sensor network node |
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| CN201810095359.XA CN108391245A (en) | 2018-01-31 | 2018-01-31 | Plug and play type wireless sensor network node |
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Application publication date: 20180810 |
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