CN205103648U - Multisource sensing information acquisition and control integration multipurpose plant suitable for networking of agricultural thing is used - Google Patents
Multisource sensing information acquisition and control integration multipurpose plant suitable for networking of agricultural thing is used Download PDFInfo
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Abstract
The utility model discloses a multisource sensing information acquisition and control integration multipurpose plant suitable for networking of agricultural thing is used, including power module, sampling detecting element, feedback control unit, communication unit, data storage module, clock circuit unit, liquid crystal display unit, LED status display unit and microcontroller MCU. The utility model discloses a three general unit of modularized design: sampling detecting element, feedback control unit, communication unit, collection " perception - decision -making - control " function in an organic whole realizes the integration of agriculture production site multisource sensing information acquisition and control, agriculture scene information acquisition equipment commonly used and controlgear's requirement has been contained to the generic interface, can be used to greenhouse aquatic products, the multiple agriculture thing networking systems of beasts and birds breed, when the scene with the equipment that specifically articulates when changing, need not the redesign controller, upper application can manage based on this kind of equipment with unified to achieve reunification and manage and the dispatch, adapt to agriculture low -cost requirement, it is simple reliable.
Description
Technical field
The utility model relates to agriculture Internet of Things application, is specifically related to a kind of multi-source heat transfer agent data acquisition and controlling integration fexible unit being applicable to the application of agriculture Internet of Things.
Background technology
Agricultural Internet of Things refers to by Agricultural Information awareness apparatus, according to rendezvous protocol, the physical units such as animals and plants life entity, environmental element, the tool of production in agricultural system and various virtual " object " are coupled together with internet, carry out message exchange and communication, to realize a kind of network to agricultural object and process Weigh sensor, location, tracking, monitor and managment.Agricultural is a key areas of Internet of Things application, and the degree of depth of technology of Internet of things and agricultural production, operation, management, the full industrial chain of service merges, significant to reclaiming traditional agriculture, lifting agricultural modernization level.
Agricultural Internet of Things application widely, comprises industrialized agriculture, field planting, aquaculture, livestock and poultry cultivation and agricultural product with regard to industry and traces to the source.Can say that its application mainly concentrates on agricultural kind, breeding production process whole information record and Automated condtrol.
Internet of Things is formed primarily of three aspects: sensing layer, network layer and application layer.At present, agriculture Internet of Things application major part concentrates on information Perception, data transmission and monitoring link, and the Based Intelligent Control application of terminal is less, mostly be simple function, single collector, controller, or topworks, has perception without decision-making, has decision-making uncontrolled monocycle joint Application comparison general.Realize the senior application (intelligent monitoring) of agriculture Internet of Things, just must build " perception-decision-making-control " closed-loop system.And the collection of key link wherein and multiple sensors information, aggregation of data process, analysis, storage, set up two-way communication with remote monitoring center and control electrical equipment etc.The major part of existing IT application to agriculture equipment is the collection of sensor, storage, transmission, cannot complete the closed-loop control of Internet of Things; Or realize the on-the-spot electric equipment of agricultural by the PLC system that constructing function is more powerful to control, but entire system cost intensive changes once the collection actuating equipment of application scenarios or mounting just to be needed to redesign controller, extendability is poor, be not suitable for agriculture low cost.
Therefore, in the urgent need to a kind of general, be easy to the integrated perception expanded, the general equipment of Decision Control.
Summary of the invention
The technical problems to be solved in the utility model is, for the problems referred to above that existing agriculture Internet of Things application exists, the general feature of the on-the-spot conventional pick-up transducers equipment of analysis and summary agricultural, actuating equipment, propose a kind of integrated fexible unit being applicable to the multi-source heat transfer agent data acquisition and controlling of agriculture Internet of Things application collecting perception, Decision Control one, reliability is high, simple and practical.
The utility model for solving the problems of the technologies described above adopted technical scheme is:
A kind of multi-source heat transfer agent data acquisition and controlling integration fexible unit being applicable to the application of agriculture Internet of Things, it comprises power module, sample detecting unit, feedback control unit, communication unit, data memory module, clock circuit unit, liquid crystal display, LED state display unit and microcontroller, and described sample detecting unit, feedback control unit, communication unit, data memory module, clock circuit unit, liquid crystal display, LED state display unit, microcontroller are all connected with power module; Meanwhile, described sample detecting unit is connected with the IIC interface of microcontroller; Described feedback control unit comprises feedback detecting unit and relay drive unit, and feedback detecting unit is connected with microcontroller external interrupt mouth INT, and the I/O interface of microcontroller is connected with relay drive unit; Described communication unit is connected with the USART interface of microcontroller; Described data memory module is connected with the SPI interface of microcontroller, clock circuit unit is connected with the IIC interface of microcontroller, liquid crystal display is connected with the USART interface of microcontroller, and LED state display unit is connected with the I/O interface of microcontroller.
By such scheme, described power module comprises 3.3V power supply unit, controlled sensor power supply unit, RS-485 power communications unit, the 3 controlled 12V power supply units in tunnel, wherein, 3.3V power supply unit realizes the conversion of direct current 24V to 3.3V direct current output by 3.3V switching regulator, the supply of 3.3V power supply unit microcontroller, sample detecting unit, communication unit, data memory module and perimeter interface circuit; Controlled sensor power supply unit provides 3 kinds of power supply supplies by 12V switching regulator, 5V switching regulator, is direct current 24V, 12V, 5V respectively, realizes corresponding Power convert; RS-485 power communications unit provides the supply of RS-485 communication chip communication bus side insulating power supply; The 3 controlled 12V power supply units in tunnel provide the power supply supply of remote wireless communication module, liquid crystal display, spare module.
By such scheme, described sample detecting unit at least docks the sensor of current signal, voltage signal, digital quantity type signal three types, realizes the signals collecting of current mode, voltage-type, digital quantity type.
By such scheme, described sample detecting unit comprises sample resistance, resistance pressure-dividing network, filter protective circuit, AD analog to digital converter, RS-485 communication chip, sample resistance, resistance pressure-dividing network are all by filter protective circuit access AD analog to digital converter, and AD analog to digital converter, RS-485 communication chip are connected to microcontroller by iic bus; Sample resistance is used for when accessing current signal, convert current signal to voltage signal, again this voltage signal is accessed AD analog to digital converter after filter protective circuit filtering decoupling, realize simulating signal and convert corresponding digital signal to, microcontroller reads the transforming numerical of AD analog to digital converter again by iic bus; Resistance pressure-dividing network is used for when accessing voltage signal, voltage signal is divided in the conversion range being pressed in AD analog to digital converter, again voltage division signal is accessed AD analog to digital converter after filter protective circuit filtering decoupling, microcontroller reads the transforming numerical of AD analog to digital converter again by iic bus; RS-485 communication chip is used for when gathering digital quantity type signal, coordinates the USART interface of microcontroller to read transforming numerical by RS-485 communication chip.
By such scheme, described feedback control unit comprises relay drive unit and feedback detecting unit two parts, relay drive unit for driving auxiliary reclay, the A.C. contactor in external electrical cabinet, thus realizes the control to outside two-phase or three-phase equipment; Feedback detecting unit is used for the operation conditions promptly and accurately being detected controlled device by the auxiliary contact of A.C. contactor; Relay drive unit forms primarily of optical coupling isolator TLP181, Schmidt trigger CD40106, Omron G5NB relay, switching tube NUD3160, optical coupling isolator TLP181 is used for playing buffer action to input, output electric signal, and Schmidt trigger CD40106 is used for being disturbed the signal shaping that wave form distortion occurs in transmission; Feedback detecting unit forms primarily of optical coupling isolator TLP181, Schmidt trigger CD40106; When microcontroller I/O port exports high level, trigger the LEDs ON of optical coupling isolator TLP181, after light activated element is subject to illumination, phototriode conducting, oppositely exports high level through Schmidt trigger CD40106, driving switch pipe NUD3160 conducting, trigger the loop conducting of G5NB relay coil, relay coil produces magnetic field, touches and G5NB relay normally open contact is closed, drive outside auxiliary reclay, the conducting of contactor loop; When microcontroller I/O port output low level, the light emitting diode cut-off of optical coupling isolator TLP181, phototriode ends, through the reverse output low level of Schmidt trigger CD40106, switching tube NUD3160 ends, the loop not conducting of G5NB relay coil, touches and G5NB relay normally open contact is disconnected, outside auxiliary reclay, contactor loop not conducting.
By such scheme, described communication unit comprises remote wireless communication module, short-range wireless communication module, RS-485 communication interface, JTAG debugging interface, short-range wireless communication module short-range wireless communication module 2.4G frequency range ZigBee wireless communication module, carries out networking, information interaction for this device with the equipment now holding other to adopt same communication pattern; Remote wireless communication module selects the GPRS communication module of gsm communication network, carries out two-way communication for this device and monitoring central server; RS-485 communication interface is articulated to RS-485 bus and external device communication by RS-485 communication chip; External emulator or Program download are connected with microcontroller by JTAG debugging interface.
By such scheme, described clock circuit unit comprises reserve battery and clock chip, clock chip is connected with the IIC interface of microcontroller, and clock chip provides real-time time accurately for whole system device, and reserve battery is used for continuing when power module power-off to ensure that clock chip runs.
By such scheme, described liquid crystal display comprises RS-485 communication chip and LCD MODULE, and LCD MODULE is connected with RS-485 communication chip by RS-485 communication interface, and RS-485 communication chip is connected with microcontroller by USART interface.
By such scheme, described LED state display unit forms primarily of LED light lamp group, the I/O port of microcontroller is connected with light emitting diode, the I/O port of microcontroller exports the light on and off of low and high level driving LED, dynamically indicates opertaing device state and sensor passage status information with this.
By such scheme, described microcontroller adopts based on Cotex-M3 core A RM32 bit processor.
The beneficial effect that the utility model produces is:
1, this device adopts embedded electronic device to realize agriculture Internet of Things rig-site utilization, its function comprise the collection of multi-source heat transfer agent, data storage, man-machine interaction display, wireless communication network, with remote monitoring center mutual, electrical equipment controls automatically, Based Intelligent Control, Long-distance Control, compared to conventional P LC system, this device, no matter from holistic cost, reliability, dirigibility, extendability aspect, can adapt to agriculture low cost, highly reliable, simple and practical requirement very well;
2, the utility model is mainly through modular design three GU Generic Units: sample detecting unit, feedback control unit, communication unit, and power module is also for the different power requirement of each GU Generic Unit provide support; General-purpose interface covers agriculture on-the-spot general information collecting device and controls the requirement of opertaing device, can be used for greenhouse, aquatic products, in livestock and poultry cultivation various agricultural Internet of things system, namely upper layer application can be unified to manage based on this kind of equipment, thus realizes unified management and scheduling;
3, the support of the docking of sample detecting unit and number of different types sensor type, comprise the signal pickup assembly of current mode, voltage-type, digital quantity type three types, realize multiple sensors information acquisition, meet that agricultural is planted, all kinds of sensors needed for the application of cultivation industry Internet of Things; Be convenient to increase information collection node and Controlling vertex, do not need to redesign controller when the collection actuating equipment of application scenarios or mounting changes, once design many places general, system upgrade is easy to maintenance;
4, feedback control unit realizes controlling the different topworkies under multiple electrical control cabinet, general electrically driven (operated) electrical appliance that continues, and covers the on-the-spot conventional electrical equipment of agricultural; For controlling unit, except performing basic controlling, by feedback detection control equipment operation condition, equipment malfunction can be effectively prevent and does; Reliability is high, simple and practical;
5, communication unit realizes upper strata plurality of communication systems, supports multiple wireless access technology; Isomery is by force supportive, highly versatile; Dirigibility is good, is easy to networking, realizes agriculture on-the-spot flexible configuration and quickly networking;
6, current agriculture Internet of Things application Problems existing, major applications concentrates on information Perception, data transmission and monitoring link, the Based Intelligent Control application of terminal is less, there is perception without decision-making, have decision-making uncontrolled monocycle joint Application comparison general, can the agriculture Internet of Things of very complete realization " perception-decision-making-control " closed-loop system by this integrated apparatus, fill up market application blank.
Accompanying drawing explanation
Fig. 1 is the system architecture schematic diagram of the utility model embodiment.
Fig. 2 is the controlled sensing power supply unit circuit theory diagrams of the utility model embodiment.
Fig. 3 is the sensing acquisition element circuit schematic diagram of the utility model embodiment.
Fig. 4 is the relay drive unit circuit theory diagrams of the utility model embodiment
Fig. 5 is the control feedback detection cell circuit schematic diagram of the utility model embodiment.
Fig. 6 is the RS-485 communication unit circuit theory diagrams of the utility model embodiment.
Fig. 7 is the schematic diagram that the utility model embodiment is applied in agriculture Internet of things system.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.
Shown in Figure 1, the multi-source heat transfer agent data acquisition and controlling integration fexible unit that the utility model embodiment provides, the structure of the Internet of Things perception key-course that is often used in agriculture.It comprises power module, sample detecting unit, feedback control unit, communication unit, data memory module, clock circuit unit, liquid crystal display, LED state display unit and microcontroller, and described sample detecting unit, feedback control unit, communication unit, data memory module, clock circuit unit, liquid crystal display, LED state display unit, microcontroller are all connected with power module; Meanwhile, described sample detecting unit is connected with the IIC interface of microcontroller; Described feedback control unit comprises feedback detecting unit and relay drive unit, and feedback detecting unit is connected with microcontroller external interrupt mouth INT, and the I/O interface of microcontroller is connected with relay drive unit; Described communication unit is connected with the USART interface of microcontroller; Described data memory module is connected with the SPI interface of microcontroller, clock circuit unit is connected with the IIC interface of microcontroller, liquid crystal display is connected with the USART interface of microcontroller, and LED state display unit is connected with the I/O interface of microcontroller.
Described power module comprises 3.3V power supply unit, controlled sensor power supply unit, RS-485 power communications unit, the 3 controlled 12V power supply units in tunnel.The input power direct current 24V of whole system, 24V, 12V, 5V, 3.3V of system needs is transformed into through power module, wherein, 3.3V power supply unit realizes mainly through 3.3V switching regulator the conversion that direct current 24V (input range 4.75V ~ 28V) exports to 3.3V direct current, the supply of this 3.3V power supply unit microcontroller, sample detecting unit, communication unit, data memory module and perimeter interface circuit;
Controlled sensor power supply unit mainly provides 3 kinds of power supply supplies, direct current 24V respectively, 12V, 5V, to meet mainstream sensor power demands, controlled sensor power supply unit is mainly through 12V switching regulator, 5V switching regulator realizes corresponding Power convert, consider that some sensor can intermittent power supply work, controlled sensor power supply unit is by triode S8050, PMOS switch pipe NTD25P03L, resistance, the controllable electric power of electric capacity composition, control whether to power by the I/O port of microcontroller, as shown in Figure 2, when I/O port Ctr_P3 exports high level, triode Qp4.1 conducting, PMOS Qp4.2 grid is 1/2Vin through resistor network dividing potential drop, PMOS Qp4.2 conducting, the VIN port input 24V of Voltage stabilizing module Up4.1, VOUT port one 2V DC voltage-stabilizing exports, sensor power, when I/O port Ctr_P3 output low level, triode Qp4.1 ends, and PMOS Qp4.2 grid voltage is Vin, PMOS Qp4.2 cut-off, and the VIN port of Voltage stabilizing module Up4.1 is without input, and VOUT port also no-output, sensor is not powered.
Described 3.3V switching regulator adopts the K7803-500R2 power module of Jin Shengyang company, and 12V switching regulator adopts the K7812-1000 power module of Jin Shengyang company, and 5V switching regulator adopts the K7805-1000 power module of Jin Shengyang company.This type of power module has Width funtion input, and non-isolated voltage stabilizing exports, and efficiency is high, loss is little, the characteristic such as low of generating heat.
RS-485 power communications unit provides the supply of isolation RS-485 chip communication bus side insulating power supply; The 3 controlled 12V power supply units in tunnel mainly provide the power supply supply of remote wireless communication module, liquid crystal display, spare module, consider that this type of equipment energy consumption is larger, adopt the mode of controllable electric power to control its power on/off flexibly.Above-mentioned design proposal and controlled sensor power supply unit design class seemingly, repeat no more.
Described sample detecting unit mainly realizes current mode, voltage-type, the collection of digital communication type three class sensor signal and detection.Sample detecting unit comprises sample resistance, resistance pressure-dividing network, filter protective circuit, AD analog to digital converter, RS-485 communication chip etc.As shown in Figure 3, if access 4-20mA amperometric sensor signal (4-20mA input), first by sample resistance Ra1.10 and Ra1.11 (100 ohm, precision 0.1%) convert current signal to voltage signal AD_IN1, the AIN0 mouth of AD analog to digital converter will be accessed again after this voltage signal filtering decoupling, realize simulating signal and convert corresponding digital signal to, microcontroller reads transforming numerical by iic bus again; If access 0-5V/10V voltage sensor signal (0-5V/10V input), by this signal access resistance pressure-dividing network, (0-5V selects Ra1.10=15K to be respectively Ra1.10 and Ra1.11, Ra1.11=10K, 0-10V selects Ra1.10=40K, Ra1.11=10K, precision 0.1%), make the magnitude of voltage after its dividing potential drop in the conversion range of AD analog to digital converter, access AD analog to digital converter by after voltage division signal filtering decoupling again, microcontroller reads transforming numerical by iic bus again; If access RS-485 digital quantity type signal (RS-485 data acquisition), the USART interface of microcontroller is coordinated to read transforming numerical by RS-485 communication chip.
Described AD analog to digital converter adopts the accurate analog to digital converter ADS1115 of microminiature 16 of Texas Instruments (TI), there is plate and carry reference voltage and oscillator, by IIC interface transmission data, operating voltage is from 2.0V to 5.5V, sampling frequency, up to 860sps, can gather four tunnel simulating signals simultaneously.Described RS-485 communication chip selects isolated form ADM2483, it designs for balanced transmission line, meet ANSITIA/EIARS-485-A standard, this device adopts the iCoupler technology of ADI company, 3 member passage way isolating apparatus, tri-state differential line driver and Differential Input receiver are integrated in single encapsulation, device logical end can adopt VCC485 (3.3V) Power supply, and bus end then adopts V485 (5V) Power supply, as shown in Figure 6.
The digital quantity conversion value that microcontroller reads, after zero crossing-full scale mathematics conversion formula calculates, can obtain the physical quantity numerical value of actual monitoring.
Described feedback control unit mainly coordinates external electrical switch board to realize the controlling functions such as start and stop, reversion of agricultural production heavy current installation.Feedback control unit comprises relay drive unit and feedback detecting unit two parts, and relay drive unit for driving auxiliary reclay, the A.C. contactor in external electrical cabinet, thus realizes the control to outside two-phase or three-phase equipment; Feedback detecting unit promptly and accurately detects the operation conditions of controlled device by the auxiliary contact of A.C. contactor.
Relay drive unit is primarily of optical coupling isolator TLP181, Schmidt trigger CD40106, Omron G5NB relay, switching tube NUD3160 forms, as shown in Figure 4, when microcontroller I/O port CTR1 exports high level, trigger the LEDs ON of TLP181, after light activated element is subject to illumination, phototriode conducting, oppositely high level is exported through Schmidt trigger CD40106, driving switch pipe NUD3160 conducting, trigger the loop conducting of G5NB relay coil, relay coil produces magnetic field, touch and G5NB relay normally open contact is closed, thus drive outside auxiliary reclay, the conducting of contactor loop, corresponding electrical equipment energising is started working.In like manner, when microcontroller I/O port CTR1 output low level, the light emitting diode cut-off of TLP181, phototriode ends, and through the reverse output low level of Schmidt trigger CD40106, switching tube NUD3160 ends, the loop not conducting of G5NB relay coil, touching makes G5NB relay normally open contact disconnect, thus causes outside auxiliary reclay, contactor loop not conducting, and corresponding electrical equipment power-off quits work.
Optical coupling isolator TLP181 is used for playing buffer action to input, output electric signal, and the electric signal of input drives light emitting diode, makes it the light sending certain wavelength, is received and produce photocurrent by photo-detector, then exports after amplifying further.This completes the conversion of electrical-optical-electricity, thus play the effect of input, output, isolation.Owing to isolating mutually between optical coupling isolator TLP181 input and output, electric signal transmission has the features such as one-way, thus has good electrical isolation capabilities and antijamming capability.
When microcontroller exports 0/1 pulse control signal, if be disturbed generation wave form distortion in the transmission, there is rising edge and the undesirable situation of negative edge, after Schmidt trigger CD40106 shaping, can comparatively ideal rect.p. be obtained, thus equipment antijamming capability is strengthened.
Feedback detecting unit forms primarily of optical coupling isolator TLP181, Schmidt trigger CD40106.As shown in Figure 5.The K1 mouth of this device is connected with one end of the auxiliary contact of external piloting control loop A.C. contactor, and the other end of auxiliary contact is connected with the GND publicly of this device.When main control loop is connected (controlled device power on operation), the auxiliary contact of A.C. contactor also close simultaneously, K1 mouth and GND connect, trigger the LEDs ON of optical coupling isolator TLP181, after light activated element is subject to illumination, phototriode conducting, signal oppositely exports high level through CD40106, be connected to the external interrupt mouth INT1 of microcontroller, microcontroller detects that the high level of triggering interrupts in real time, and this device just accurately can judge that controlled device energising runs.As microcontroller does not detect that high level interrupts, this device just can judge that controlled device is not energized operation.
Communication unit comprises remote wireless communication module, short-range wireless communication module, RS-485 communication interface, JTAG debugging interface, short-range wireless communication module is connected with microcontroller by USART interface, short-range wireless communication module selects 2.4G frequency range ZigBee wireless communication module, is mainly used in this device and carries out networking, information interaction with the equipment now holding other to adopt same communication pattern; Remote wireless communication module is connected with microcontroller by USART interface, and remote wireless communication module selects the GPRS communication module of gsm communication network, is mainly used in this device and carries out two-way communication with monitoring central server; RS-485 communication interface is articulated to RS-485 bus and external device communication by RS-485 communication chip.As shown in Figure 6, RS-485 communication chip is connected with the USART interface of microcontroller.RX3, TX3 are respectively microcontroller data receiver port, transmit port.CX3 is that microcontroller control communication chip receives and dispatches enable I/O port.
External emulator or Program download are connected with microcontroller by JTAG debugging interface.JTAG is a kind of embedded type debugging technology, is usually used in realizing on-line system programing function, as programmed etc. to FLASH device.This device JTAG debugging interface adopts 20 pin standard interfaces, can connect the emulator of various standard, also can connect easy JTAG downloader.
Data memory module adopts storage chip W25Q64,64M serial flash storer, and data memory module is connected with microcontroller by SPI interface, is mainly used in storing this equipment trip information, configuration information and sensor historic data message etc.
Clock circuit unit comprises reserve battery and model is the clock chip of DS3231, clock chip is connected with the IIC interface of microcontroller, clock chip provides real-time time accurately for whole system device, and reserve battery is used for continuing when power module power-off to ensure that clock chip runs.
Liquid crystal display comprises RS-485 communication chip and LCD MODULE, LCD MODULE adopts aobvious intelligent display terminal in Wuhan, model is SDW8048-080-TS40W, intelligent display terminal is connected with RS-485 communication chip ADM2483 by RS-485 communication interface, and RS-485 communication chip ADM2483 is connected with microcontroller by USART interface; Liquid crystal display, as this device and extraneous Man Machine Interface, shows sensing data, opertaing device state and correlation parameter information in real time.
LED state display unit forms primarily of LED light lamp group, the I/O port of microcontroller is connected with light emitting diode, the I/O port of microcontroller exports the light on and off of low and high level driving LED, dynamically indicates the information such as opertaing device state and sensor passage state with this.
Described microcontroller adopts based on Cotex-M3 core A RM32 bit processor, and model is STM32F107, and be a interconnected type Series of MCU, performance is more powerful, is integrated with various High performance industrial standard interface.
The course of work of the present embodiment is as follows:
The input power of this device is direct current 24V, provides direct current 24V, 12V, 5V, 3.3V needed for whole system unit power supply by power module.Clock circuit unit for whole device provide precisely, stablize, continual real-time clock, consider that clock long-play exists biased error, clock circuit unit is at set intervals by the communication interface receive clock calibration command of this device.
The corresponding sensing detection port of this device is configured to the actual sensor (4-20mA, 0-5V/10V) connected, simultaneously for sensor provides multiple controllable direct current power supply.Sensor information number becomes the digital quantity that can read after sample detecting unit, microcontroller reads digital information according to the agreement of standard by IIC interface again, digital quantity conversion value is after zero crossing-full scale mathematics conversion formula calculates, the physical quantity numerical value of surveying can be obtained, this numerical value directly shows by liquid crystal display, passes through RS-485 communications interface transmission to Surveillance center or other equipment simultaneously.In addition, this device pick-up transducers data report by the collection of real-time clock timing automatic, or are reported by the passive execution collection of RS-485 communication interface.This device temporally records by data memory module the sensor values that storage gathers, and can transfer historical data at any time.
This device is by feedback control unit, and coordinate external electrical cabinet to realize the on off control of two-phase, three-phase equipment, one has two class control modes:
(1) ACTIVE CONTROL, control transfers to microcontroller to decide in its sole discretion.Can be based on time aspect, or control based on the condition of threshold parameter aspect, the on off control of time-based condition control and certain control port equipment of a certain period, this clock is the system clock of this device, derive from clock circuit unit, and be consistent with our clock used in everyday outside.Condition based on threshold parameter control be microcontroller according to the sensor values detected, then with this sensor parameters threshold value comparison preset, the on off control of actuating station jaws equipment again time eligible.Time parameter involved above, threshold parameter are all transfer to Surveillance center to be configured by the RS-485 communication interface of this device, and these parameter configuration are all stored in data memory module, and microcontroller can take out at any time.
(2) Passive Control, microcontroller is listened to the outside control command sent and is performed control action, and control command can be derive from Surveillance center, or other external units.Communications conduit is the communication unit of this device, comprises RS-485 communication interface, the ZigBee wireless communication module of short-range wireless communication module and the GPRS communication module of remote wireless communication module.
No matter be ACTIVE CONTROL or Passive Control, after microcontroller performs corresponding control operation, capital is by the whether execution of the feedback corresponding contactor loop of detecting unit inspection, then detect that state is shown in real time by LED state display unit and liquid crystal display by actual, pass through the order of RS-485 communication interface feedback state of a control to Surveillance center simultaneously.
This device sets up two-way communication by communication interface and external unit or Surveillance center, is the core component building agriculture Internet of Things.This device builds the cordless communication network of agriculture on-the-spot regional area by short-range wireless communication module-ZigBee, is built connect communication network that is on-the-spot and remote monitoring center by remote wireless communication module-GPRS.
This device achieves signals collecting by above-mentioned module, and decision-making performs the multi-source general controls mechanism with one.Without the need to redesigning new controller under different application scenarioss, isomery is by force supportive, highly versatile, can realize the on-the-spot quickly networking of agricultural, is also convenient to application layer and realizes unified management and scheduling.
As shown in Figure 7, integrated fexible unit of the present utility model well solves current agriculture Internet of Things application Problems existing, major applications concentrates on information Perception, data transmission and monitoring link, the Based Intelligent Control application of terminal is less, has perception without decision-making, has decision-making uncontrolled monocycle joint Application comparison general.Can the agriculture Internet of Things of very complete realization " perception-decision-making-control " closed-loop system by this integrated apparatus, fill up market application blank.
The utility model is not only confined to above-mentioned preferred forms; anyone can draw other various forms of products under enlightenment of the present utility model; no matter but any change is done in its shape or structure; concrete chip model is just preferred; as long as the chip that can realize corresponding function also belongs to protection domain of the present utility model; every have identical with the utility model or akin technical scheme, all within its protection domain.
Claims (10)
1. be applicable to the multi-source heat transfer agent data acquisition and controlling integration fexible unit of agriculture Internet of Things application, it is characterized in that: it comprises power module, sample detecting unit, feedback control unit, communication unit, data memory module, clock circuit unit, liquid crystal display, LED state display unit and microcontroller, described sample detecting unit, feedback control unit, communication unit, data memory module, clock circuit unit, liquid crystal display, LED state display unit, microcontroller are all connected with power module; Meanwhile, described sample detecting unit is connected with the IIC interface of microcontroller; Described feedback control unit comprises feedback detecting unit and relay drive unit, and feedback detecting unit is connected with microcontroller external interrupt mouth INT, and the I/O interface of microcontroller is connected with relay drive unit; Described communication unit is connected with the USART interface of microcontroller; Described data memory module is connected with the SPI interface of microcontroller, clock circuit unit is connected with the IIC interface of microcontroller, liquid crystal display is connected with the USART interface of microcontroller, and LED state display unit is connected with the I/O interface of microcontroller.
2. the multi-source heat transfer agent data acquisition and controlling integration fexible unit being applicable to the application of agriculture Internet of Things according to claim 1, it is characterized in that: described power module comprises 3.3V power supply unit, controlled sensor power supply unit, RS-485 power communications unit, the 3 controlled 12V power supply units in tunnel, wherein, 3.3V power supply unit realizes the conversion of direct current 24V to 3.3V direct current output by 3.3V switching regulator, the supply of 3.3V power supply unit microcontroller, sample detecting unit, communication unit, data memory module and perimeter interface circuit; Controlled sensor power supply unit provides 3 kinds of power supply supplies by 12V switching regulator, 5V switching regulator, is direct current 24V, 12V, 5V respectively, realizes corresponding Power convert; RS-485 power communications unit provides the supply of RS-485 communication chip communication bus side insulating power supply; The 3 controlled 12V power supply units in tunnel provide the power supply supply of remote wireless communication module, liquid crystal display, spare module.
3. the multi-source heat transfer agent data acquisition and controlling integration fexible unit being applicable to the application of agriculture Internet of Things according to claim 1, it is characterized in that: described sample detecting unit at least docks the sensor of current signal, voltage signal, digital quantity type signal three types, realizes the signals collecting of current mode, voltage-type, digital quantity type.
4. the multi-source heat transfer agent data acquisition and controlling integration fexible unit being applicable to the application of agriculture Internet of Things according to claim 3, it is characterized in that: described sample detecting unit comprises sample resistance, resistance pressure-dividing network, filter protective circuit, AD analog to digital converter, RS-485 communication chip, sample resistance, resistance pressure-dividing network are all by filter protective circuit access AD analog to digital converter, and AD analog to digital converter, RS-485 communication chip are connected to microcontroller by iic bus; Sample resistance is used for when accessing current signal, convert current signal to voltage signal, again this voltage signal is accessed AD analog to digital converter after filter protective circuit filtering decoupling, realize simulating signal and convert corresponding digital signal to, microcontroller reads the transforming numerical of AD analog to digital converter again by iic bus; Resistance pressure-dividing network is used for when accessing voltage signal, voltage signal is divided in the conversion range being pressed in AD analog to digital converter, again voltage division signal is accessed AD analog to digital converter after filter protective circuit filtering decoupling, microcontroller reads the transforming numerical of AD analog to digital converter again by iic bus; RS-485 communication chip is used for when gathering digital quantity type signal, coordinates the USART interface of microcontroller to read transforming numerical by RS-485 communication chip.
5. the multi-source heat transfer agent data acquisition and controlling integration fexible unit being applicable to the application of agriculture Internet of Things according to claim 1, it is characterized in that: described feedback control unit comprises relay drive unit and feedback detecting unit two parts, relay drive unit for driving auxiliary reclay, the A.C. contactor in external electrical cabinet, thus realizes the control to outside two-phase or three-phase equipment; Feedback detecting unit is used for the operation conditions promptly and accurately being detected controlled device by the auxiliary contact of A.C. contactor; Relay drive unit forms primarily of optical coupling isolator TLP181, Schmidt trigger CD40106, Omron G5NB relay, switching tube NUD3160, optical coupling isolator TLP181 is used for playing buffer action to input, output electric signal, and Schmidt trigger CD40106 is used for being disturbed the signal shaping that wave form distortion occurs in transmission; Feedback detecting unit forms primarily of optical coupling isolator TLP181, Schmidt trigger CD40106; When microcontroller I/O port exports high level, trigger the LEDs ON of optical coupling isolator TLP181, after light activated element is subject to illumination, phototriode conducting, oppositely exports high level through Schmidt trigger CD40106, driving switch pipe NUD3160 conducting, trigger the loop conducting of G5NB relay coil, relay coil produces magnetic field, touches and G5NB relay normally open contact is closed, drive outside auxiliary reclay, the conducting of contactor loop; When microcontroller I/O port output low level, the light emitting diode cut-off of optical coupling isolator TLP181, phototriode ends, through the reverse output low level of Schmidt trigger CD40106, switching tube NUD3160 ends, the loop not conducting of G5NB relay coil, touches and G5NB relay normally open contact is disconnected, outside auxiliary reclay, contactor loop not conducting.
6. the multi-source heat transfer agent data acquisition and controlling integration fexible unit being applicable to the application of agriculture Internet of Things according to claim 1, it is characterized in that: described communication unit comprises remote wireless communication module, short-range wireless communication module, RS-485 communication interface, JTAG debugging interface, short-range wireless communication module short-range wireless communication module 2.4G frequency range ZigBee wireless communication module, carries out networking, information interaction for this device with the equipment now holding other to adopt same communication pattern; Remote wireless communication module selects the GPRS communication module of gsm communication network, carries out two-way communication for this device and monitoring central server; RS-485 communication interface is articulated to RS-485 bus and external device communication by RS-485 communication chip; External emulator or Program download are connected with microcontroller by JTAG debugging interface.
7. the multi-source heat transfer agent data acquisition and controlling integration fexible unit being applicable to the application of agriculture Internet of Things according to claim 1, it is characterized in that: described clock circuit unit comprises reserve battery and clock chip, clock chip is connected with the IIC interface of microcontroller, clock chip provides real-time time accurately for whole system device, and reserve battery is used for continuing when power module power-off to ensure that clock chip runs.
8. the multi-source heat transfer agent data acquisition and controlling integration fexible unit being applicable to the application of agriculture Internet of Things according to claim 1, it is characterized in that: described liquid crystal display comprises RS-485 communication chip and LCD MODULE, LCD MODULE is connected with RS-485 communication chip by RS-485 communication interface, and RS-485 communication chip is connected with microcontroller by USART interface.
9. the multi-source heat transfer agent data acquisition and controlling integration fexible unit being applicable to the application of agriculture Internet of Things according to claim 1, it is characterized in that: described LED state display unit forms primarily of LED light lamp group, the I/O port of microcontroller is connected with light emitting diode, the I/O port of microcontroller exports the light on and off of low and high level driving LED, dynamically indicates opertaing device state and sensor passage status information with this.
10. the multi-source heat transfer agent data acquisition and controlling integration fexible unit being applicable to the application of agriculture Internet of Things according to claim 1, is characterized in that: described microcontroller adopts based on Cotex-M3 core A RM32 bit processor.
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| CN201520885857.6U CN205103648U (en) | 2015-11-06 | 2015-11-06 | Multisource sensing information acquisition and control integration multipurpose plant suitable for networking of agricultural thing is used |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105223939A (en) * | 2015-11-06 | 2016-01-06 | 武汉市农业机械化科学研究所 | Be applicable to the multi-source heat transfer agent data acquisition and controlling integration fexible unit of agriculture Internet of Things application |
| CN107966921A (en) * | 2016-10-20 | 2018-04-27 | 帅立国 | A kind of built-in industrial internet of things net controller and monitoring system |
| CN111459853A (en) * | 2020-04-22 | 2020-07-28 | 深圳市椰壳信息科技有限公司 | Relay equipment control system and method |
| CN112461292A (en) * | 2020-11-16 | 2021-03-09 | 北京航天情报与信息研究所 | Library wiring monitoring method |
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2015
- 2015-11-06 CN CN201520885857.6U patent/CN205103648U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105223939A (en) * | 2015-11-06 | 2016-01-06 | 武汉市农业机械化科学研究所 | Be applicable to the multi-source heat transfer agent data acquisition and controlling integration fexible unit of agriculture Internet of Things application |
| CN105223939B (en) * | 2015-11-06 | 2018-06-08 | 武汉市农业科学技术研究院农业机械化科学研究所 | Suitable for the multi-source heat transfer agent acquisition of agriculture Internet of Things application and the integrated fexible unit of control |
| CN107966921A (en) * | 2016-10-20 | 2018-04-27 | 帅立国 | A kind of built-in industrial internet of things net controller and monitoring system |
| CN111459853A (en) * | 2020-04-22 | 2020-07-28 | 深圳市椰壳信息科技有限公司 | Relay equipment control system and method |
| CN112461292A (en) * | 2020-11-16 | 2021-03-09 | 北京航天情报与信息研究所 | Library wiring monitoring method |
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