CN203950176U - A kind of wireless sensor network node hardware platform that can online reconfiguration - Google Patents
A kind of wireless sensor network node hardware platform that can online reconfiguration Download PDFInfo
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- CN203950176U CN203950176U CN201420113744.XU CN201420113744U CN203950176U CN 203950176 U CN203950176 U CN 203950176U CN 201420113744 U CN201420113744 U CN 201420113744U CN 203950176 U CN203950176 U CN 203950176U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The utility model relates to a kind of wireless sensor network node hardware platform that can online reconfiguration, make topper working application system synthesis integrated platform shield the exploitation to hardware, user is in the time using this platform, only need be according to item-function requirement, by the setting of systematic parameter, just can make online suitable sensor node, the assembled Internet of Things application system that goes out to satisfy the demands; And transplantability is good, can smooth upgrade; In the time that needs increase new function or adopt dissimilar sensor, needn't revise external hardware circuit, utilize the characteristic of on-line reconfiguration system, can be the function that system transplantation is new easily, realize more complicated processing, realize smooth upgrade.
Description
Technical field
The utility model relates to wireless sense network field, especially a kind of wireless sensor network node hardware platform that can online reconfiguration.
Background technology
At present, Internet of Things application system training platform mainly can complete the checking of some infrastests, as horse race lamp, serial communication, Temperature Humidity Sensor experiment etc., this training platform is partial to the training of low level development, need student to have certain basis to hardware development, possess certain embedded development ability, Higher Vocational-Technical College Students is difficult to reach this level.
Professorship's Internet of Things practice-training teaching requires to provide a hatching platform for student understands and develops Internet of Things application system, the study of student by higher level lanquage and grasping after indispensable hardware knowledge, needn't there is dark understanding to hardware, directly realize the communication between sensor node by higher level lanquage, and by encapsulation, complete the control function of execution architecture, just can develop Internet of Things intelligent use system, this teaching and popularization to Internet of Things application system has positive meaning.
Utility model content
The technical problems to be solved in the utility model is: a kind of wireless sensor network node hardware platform that can online reconfiguration is provided, can develops highly versatile, secondary developing platform based on true project.In teaching process, can design the Internet of Things application system of different field based on secondary developing platform and organize teaching, student only need design system logic, selects suitable node module, just can complete the exploitation of a true application system by the step such as parameter configuration, the system integration.
The utility model solves the technical scheme that its technical matters adopts: a kind of wireless sensor network node hardware platform that can online reconfiguration, is made up of processing unit, Sensor Analog Relay System amount input processing unit, sensor digital quantity input block, analog output control module, digital output control module, wireless transmit/receive units, power supply unit; Described Sensor Analog Relay System amount input processing unit, sensor digital quantity input block, analog output control module, digital output control module are connected with processing unit by slot;
Described processing unit is completed by fpga chip, comprises microprocessor IP kernel; Described Sensor Analog Relay System amount input processing unit comprises sensor, modulate circuit, A/D change-over circuit; Described A/D change-over circuit is connected with microprocessor IP kernel by A/D sequential control circuit;
Described analog output control module comprises mechanism's functional control circuit and D/A change-over circuit; Described D/A change-over circuit is connected with microprocessor IP kernel by D/A sequential control circuit; Described microprocessor IP kernel is connected with wireless transmit/receive units.
Wireless transmit/receive units described in the utility model is made up of wireless radio frequency circuit and antenna; Described processing unit control and the whole sensor of coordination make acquisition node work; The described corresponding information of Sensor Analog Relay System amount input processing unit collection; And according to the difference of required Information Monitoring, flexible configuration is Temperature Humidity Sensor, gas sensor, intensity of illumination sensor and/or cigarette propagated sensation sensor; The described corresponding digital quantity input signal of sensor digital quantity input block collection.
Processing unit described in the utility model can pass through the corresponding configuration file of online reconfiguration, completes the node hardware platform processing unit function of a certain specific area intelligent use system.Because dissimilar application need to adopt dissimilar sensor, modulate circuit, A/D change-over circuit and D/A change-over circuit, when therefore processing unit being reshuffled, need configure different A/D sequential control and D/A sequential control functional unit at every turn.The data that Sensor Analog Relay System amount input processing unit and sensor digital quantity input block collect are sent to microprocessor IP kernel and process, need configure microprocessor IP kernel to move different programs for different application, it is different parameters that threshold value comparing function is set in program, completes the respective application needed warning trigger action of institute and data display mode etc.
The beneficial effects of the utility model are, solve the defect existing in background technology, 1. make topper working application system synthesis integrated platform shield the exploitation to hardware, user is in the time using this platform, only need be according to item-function requirement, by the setting of systematic parameter, just can make online suitable sensor node, the assembled Internet of Things application system that goes out to satisfy the demands; 2. transplantability is good, can smooth upgrade.In the time that needs increase new function or adopt dissimilar sensor, needn't revise external hardware circuit, utilize the characteristic of on-line reconfiguration system, can be the function that system transplantation is new easily, realize more complicated processing, realize smooth upgrade.
Brief description of the drawings
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is wireless sensor network node hardware platform system block diagram of the present utility model.
Embodiment
With preferred embodiment, the utility model is described in further detail by reference to the accompanying drawings now.These accompanying drawings are the schematic diagram of simplification, and basic structure of the present utility model is only described in a schematic way, and therefore it only shows the formation relevant with the utility model.
As shown in Figure 1, wireless sensor network node hardware platform is made up of processing unit, Sensor Analog Relay System amount input processing unit, sensor digital quantity input block, analog output control module, digital output control module, wireless transmit/receive units, power supply unit.
Processing unit is responsible for controlling and coordinating the work of whole sensor acquisition node; Sensor Analog Relay System amount input processing unit is used for gathering corresponding information.According to the difference of required Information Monitoring, can flexible configuration be Temperature Humidity Sensor, gas sensor, intensity of illumination sensor, cigarette sense sensor variety classes; Sensor digital quantity input block is used for gathering corresponding digital quantity input signal.Analog output control module, digital output control module complete intelligentized control to external associative operation equipment.Wireless transmit/receive units is made up of wireless radio frequency circuit and antenna, is mainly responsible for transceiving data and exchange of control information; Power supply unit is used to whole node that power supply is provided, and monitoring node cell voltage judges whether to need to safeguard.
Sensor Analog Relay System amount input processing unit, sensor digital quantity input block, analog output control module, digital output control module are connected with processing unit by slot.Need to construct new Internet of Things application system time, replaceable corresponding input and output processing unit type is required type.Processing unit is completed by FPGA, can pass through the corresponding configuration file of online reconfiguration, completes the node hardware platform processing unit function of a certain specific area intelligent use system.Because dissimilar application need to adopt dissimilar sensor, modulate circuit, A/D change-over circuit and D/A change-over circuit, when therefore processing unit being reshuffled, need configure different A/D sequential control and D/A sequential control functional unit at every turn.The data that Sensor Analog Relay System amount input processing unit and sensor digital quantity input block collect are sent to microprocessor IP kernel and process, need configure microprocessor IP kernel to move different programs for different application, it is different parameters that threshold value comparing function is set in program, completes the respective application needed warning trigger action of institute and data display mode etc.
The IP kernel that processing unit adopts adopts Hardware Description Language VHDL to adopt top-down method for designing to write.IP core mainly comprises: the internal RAM storer of ROM, the 256B of CPU, timer, interruptable controller, serial ports controller, 8KB, these important module of SPI interface.CPU is the core component of whole microcontroller, and remaining module is played to control action.CPU is made up of arithmetic and logic unit (ALU), register file, multiplier-divider and code translator.From CPU module, draw address wire, control line and data line, CPU realizes and being connected of all the other modules by these three groups of lines.Internal RAM storer is used for store data, and it is made up of work register, bit addressable locations, buffer zone and special function register four parts.ROM storer is used for depositing program.Interruption is the requisite part of microcontroller, and interruption can allow system make real-time processing to accident.Here designed the interrupt interface with two-stage priority and 12 interrupt sources.Timer also claims counter, and the effect in microcontroller comprises following functions: for microcontroller provides periodic interruption, carry out task scheduling; For the application program of needs timing provides timing.In this microcontroller, designed three timers, wherein timer 0,1 has four kinds of working methods, and timer 2 has three kinds of working methods.SPI interface is used for connecting wireless transmit/receive units, and SPI interface is made up of Clock dividers, clock control logic, special function register and control module.
The selected main device of wireless transmit/receive units is CC2530.CC2530 is a real SOC (system on a chip) (SoC) solution of IEEE802.15.4, ZigBee and RF4CE application, and it combines the premium properties of leading RF transceiver, can guarantee the validity and reliability of short haul connection.CC2530 only needs few peripheral component, and peripheral circuit comprises crystal oscillation clock circuit, radio frequency I/O match circuit and microcontroller interface circuit three parts.Chip local oscillation signal both can be provided by external active crystal, also can be provided by internal circuit, needed additional crystal oscillator and two load capacitances, the size of electric capacity to depend on the parameter such as crystal frequency and input capacitive reactance by internal circuit while being provided.Radio frequency I/O match circuit is mainly used to the input and output impedance of matching chip, and making its input and output impedance is 50 Ω, simultaneously for PA and the LNA of chip internal provide direct current biasing.Microprocessor IP kernel is connected by SPI interface with CC2530.Here microprocessor IP kernel is master controller, and the SPI of microprocessor IP kernel core is operated in host mode, and it is the controlling party of SPI data transmission.CC2530 is controlled, and its SPI is operated in slave mode.
System software program draw together initialization, microprocessor control CC2530 send and receive data, the node data collection of CC2530 and gather, external equipment control, individualized intelligent application supervisor submodule.Wherein node data collection from gather, external equipment control, individualized intelligent application submodule program is according to different project application demands, the program that Configuration Online is different, generates the operation platform of a certain specific area intelligent use system.The design's software program by C language compilation, completes all design in the Project Manager providing at Nios II IDE in Nios II IDE.Program structure comprises bsp driver and upper level applications design.Bottom program comprises hardware drive program and basic input-output function, is used for supplying calling of upper procedure.
In the present embodiment, Configuration Online module adopts in the embedded Linux system based on ARM and uses Jam Player and Jam configuration file, and the jtag interface that utilizes FPGA carries out the method for Configuration Online to it.Configuration file is generated in the time designing intelligent use by Practical training equipment manufacturer, and the ARM that sends Configuration Online module by System Computer man-machine interface through Ethernet by user in the time of configuration carries out Configuration Online.The ARM model using in the utility model is S3C2410.Use general pin GPB7, GPB8, GPB9, the GPB10 pin of S3C2410 to be connected with jtag interface TMS, TDI, TCK and the TDO of FPGA respectively.
In built-in Linux environment, use jtag interface configuration FPGA, use standard testing and programming language STAPL.Jam STAPL is the external member of the support STAPL that provides of altera corp.Use Jam STAPL to be configured and comprise two parts, Jam Player and Jam configuration file.Jam Player reads Jam file and resolves the content of Jam document presentation, produces the binary data stream for configuring and read feedback data on jtag interface, and Jam configuration file can generate by Quartus II Software Create or by file layout crossover tool.
Jam Player is transplanted in built-in Linux, need to carries out following customization:
1. change platform predefined environment, adds preprocessor statement, removes unnecessary source code;
By JTAG signal map to particular hardware pin;
3. the customization error message way of output;
4. according to the processing power of concrete microprocessor, customize delay function.
Because Jam Player operates in built-in Linux environment, cannot directly access the pin register of ARM chip, input and output that also just cannot direct control pin.So be also necessary for for the pin of jtag interface and write driver, they are packaged into the character type file that Jam Player can read and write.
After Jam Player and respective drive are transplanted successfully, by ARM, FPGA is carried out to Configuration Online; System is upgraded application without restarting with regard to capable of dynamic.User is sent to Configuration Online module by Ethernet by configuration file at System Computer, according to business rule and configuration parameter, A/D sequential control and D/A sequential control functional unit can be set online, move different programs for different application configure microprocessor IP kernels, complete needed warning trigger action and data display mode etc., generate the node hardware platform of a certain specific area intelligent use system.
What in above instructions, describe is embodiment of the present utility model, various not illustrating is construed as limiting flesh and blood of the present utility model, person of an ordinary skill in the technical field read after instructions can to before described embodiment make an amendment or be out of shape, and do not deviate from essence and the scope of utility model.
Claims (1)
1. a wireless sensor network node hardware platform that can online reconfiguration, is made up of processing unit, Sensor Analog Relay System amount input processing unit, sensor digital quantity input block, analog output control module, digital output control module, wireless transmit/receive units, power supply unit; It is characterized in that: described Sensor Analog Relay System amount input processing unit, sensor digital quantity input block, analog output control module, digital output control module are connected with processing unit by slot;
Described processing unit is completed by fpga chip, comprises microprocessor IP kernel; Described Sensor Analog Relay System amount input processing unit comprises sensor, modulate circuit, A/D change-over circuit; Described A/D change-over circuit is connected with microprocessor IP kernel by A/D sequential control circuit;
Described analog output control module comprises mechanism's functional control circuit and D/A change-over circuit; Described D/A change-over circuit is connected with microprocessor IP kernel by D/A sequential control circuit; Described microprocessor IP kernel is connected with wireless transmit/receive units.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104501877A (en) * | 2015-01-22 | 2015-04-08 | 浪潮(北京)电子信息产业有限公司 | Data acquisition method and device |
| WO2016127778A1 (en) * | 2015-02-13 | 2016-08-18 | 武汉数字派特科技有限公司 | Data transmission and control device in multi-node sensor network |
| CN107992339A (en) * | 2017-11-15 | 2018-05-04 | 浙江大学 | A kind of method for automatically generating Internet of things node hardware configuration |
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2014
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104501877A (en) * | 2015-01-22 | 2015-04-08 | 浪潮(北京)电子信息产业有限公司 | Data acquisition method and device |
| WO2016127778A1 (en) * | 2015-02-13 | 2016-08-18 | 武汉数字派特科技有限公司 | Data transmission and control device in multi-node sensor network |
| US10606248B2 (en) | 2015-02-13 | 2020-03-31 | The Wuhan Digital Pet Co., Ltd | Data transmission and control device in a multi-node sensor network |
| CN107992339A (en) * | 2017-11-15 | 2018-05-04 | 浙江大学 | A kind of method for automatically generating Internet of things node hardware configuration |
| CN107992339B (en) * | 2017-11-15 | 2020-06-30 | 浙江大学 | Method for automatically generating hardware configuration of nodes of Internet of things |
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Granted publication date: 20141119 Termination date: 20170313 |