CN104570811A - Multifunctional wireless acquisition controller - Google Patents
Multifunctional wireless acquisition controller Download PDFInfo
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- CN104570811A CN104570811A CN201310500476.7A CN201310500476A CN104570811A CN 104570811 A CN104570811 A CN 104570811A CN 201310500476 A CN201310500476 A CN 201310500476A CN 104570811 A CN104570811 A CN 104570811A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/25—Pc structure of the system
- G05B2219/25314—Modular structure, modules
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention relates to a data acquisition unit, in particular to a wireless data acquisition unit, and discloses a multifunctional wireless acquisition controller. The multifunctional wireless acquisition controller comprises a central microprocessor, a power supply, a wireless communication module, interfaces, an analog input module, an analog output module, a digital quantity input module, and a digital quantity output module, wherein the central microprocessor is electrically connected with the power supply, the interface, the analog input module, the analog input output module, the digital quantity input module and the digital quantity output module respectively; the central microprocessor is in wireless communication with the wireless communication module; the interfaces are in wired network communication with an external instrument. The multifunctional wireless acquisition controller disclosed by the invention is rich in interfaces, supports input and output of multichannel digital quantities and analog quantities, and is low in cost and wide in application.
Description
Technical field
The present invention relates to a kind of data acquisition unit, particularly relate to a kind of Wireless data acquisition unit.
Background technology
Wireless technology has unrivaled advantage than cable technology in many fields, and it can solve the insurmountable difficult problem of many wired modes, and more convenient bring to the work of people and life.The development of wireless RTU module can multiple occasion such as employing wireless data acquisition and Industry Control.Existing wireless collection controller function is more single, and its application has significant limitation.
Summary of the invention
Technique effect of the present invention can overcome above-mentioned defect, provides a kind of Multifunctional wireless acquisition controller, and they can the data of direct collection site instrument.
For achieving the above object, the present invention adopts following technical scheme: it comprises central microprocessor, power supply, wireless communication module, interface, Analog input mModule, analog output module, digital quantity input module, digital output module, central microprocessor is connected with power supply, interface, Analog input mModule, analog output module, digital quantity input module, digital output modular electrical respectively, central microprocessor and wireless communication module wireless telecommunications, interface and the communication of external meters cable network.
This wireless collection controller realizes data acquisition and the controlling functions of industry spot, and module can realize input, the 2 road analog outputs of 8 tunnel analog quantitys, the I/O of 8 way switch amounts, the functions such as the input and output of pulse signal.Software support Modbus communication protocol (or class Modbus communication protocol), inside modules can select integrated real-time clock and temperature detecting function.
Central microprocessor adopts the ARM chip of 32 RISC, and central microprocessor adopts STM32F103 model, has data-handling capacity very fast, can be applied in the environment of high-performance and high speed.This wireless collection controller designs for commercial Application, between inner input-output unit and control module, adopt Phototube Coupling, greatly reduces industry spot and disturbs the impact normally run module, make module have good reliability.Adopt the RS-485 communication interface of band isolation, industry spot signal can be avoided the impact of microcontroller communication interface, and there is ESD, overvoltage, overcurrent protection.All analog quantitys and the input and output of digital quantity are all to ensure module stability work with the isolation of light lotus root.
Interface comprises RS-232 interface, RS-485 interface, CAN interface.The operation such as the control configuration of system is completely by operation of serial-port, and the interface of communication can be selected by user oneself.
Wireless communication module adopts 2.4G/433M communication module or wireless communication module to adopt GPRS/CDMA communication module.Native system design two cover wireless RTU module, realizes transmission and the reception of final wireless data, and sends and the complete transparent transmission of data received.
Multifunctional wireless acquisition controller of the present invention, rich interface, support multi-path digital, the input of analog quantity, output, equipment cost is low, is widely used.
Accompanying drawing explanation
Fig. 1 is circuit module schematic diagram of the present invention.
Embodiment
This acquisition controller comprises central microprocessor, power supply, wireless communication module, interface, Analog input mModule, analog output module, digital quantity input module, digital output module, central microprocessor is connected with power supply, interface, Analog input mModule, analog output module, digital quantity input module, digital output modular electrical respectively, central microprocessor and wireless communication module wireless telecommunications, interface and the communication of external meters cable network.
Central microprocessor adopts STM32F103 model.Interface comprises RS-232 interface, RS-485 interface, CAN interface.Wireless communication module adopts 2.4G/433M communication module.Wireless communication module adopts GPRS/CDMA communication module.
The major function of this wireless collection controller carries out the collection of analog input signals collecting, on-the-spot Modbus instrumented data, and be sent to center by wireless communication module.Module itself can be set to arbitrarily main frame and slave mode, and can switch wireless communication modes.Module also directly can use RS-485 to isolate communication interface and use as wired acquisition module.Module has the AI differential path on 4 tunnels, and each group differential path also can be configured to the single ended input passage on 2 tunnels, and with satisfied different occasion demand, be applicable to the various voltage and current signals gathering industry spot, sampling resolution is 12; Module also has analog output, digital quantity input and digital output subsidiary function.Module has the analog output channel on 2 tunnels, can independently control to export, and also can carry out synchronism output, output resolution ratio is 12; Module also has 8 road DI and 8 road DO passages.Module has also possessed the collection that two-way thermal resistance input interface can realize scene temperature in addition.
Acquisition controller realizes following function:
1. the collection of in-site modeling signal
System possesses the AD converter of isolation, can directly measure field instrument, sensor and transmitter export analog voltage/current signal (1-5V/0-10V/4-20ma).Directly can measure two-way two line thermal resistance signal.Communication protocol also makes Modbus agreement, and be that AD input in each road all possesses independent register address, such user just can be gathered by the data of Modbus agreement to instrument.System can be set to single-ended and Differential Input pattern and accept on-the-spot single-ended and differential analog signal respectively.
2. the data acquisition of field digital instrument
System possesses RS-485 interface, can realize communicating of RTU and on-the-spot Modbus instrument, directly can be carried out the reading of data by Modbus agreement.
3. the output of the I/O of switching value
The I/O of switching value exports and can realize the detection of external unit switching signal output and the controlling functions to external unit, all input and output amounts all hint obliquely at the register for Modbus, use the mode reading Modbus register to realize to the collection of input signal amount, adopt the mode writing Modbus register to realize to the control of peripherals.
4. analog output
Analog output can realize voltage and current analog quantity output, control the same method of Modbus agreement that adopts and design exporting.
In industrial control process, often need the sensor die analog quantity signal of collection site, to analyze to it control carrying out field apparatus.The analog quantity output signals of various sensor devices is different, common are voltage signal and current signal.This acquisition controller has 4 tunnel analog quantity Differential Input passages, and by configuration software, each group differential path also can be configured to the single ended input passage on 2 tunnels, also can use simultaneously.Analog input channel can gather-10V ~+10V, the voltage signal of-5V ~+5V ,-2.5V ~+2.5V, and the input range of voltage can pass through software design patterns.When gathering current signal, need an external accurate sampling resistor, then the magnitude of voltage recorded is converted to current value.Passage 7 in addition in analog input channel and passage 8 devise the Wiring port of thermal resistance, can be used for the temperature of measure field.
There are 2 analog output channels, tunnel, the voltage way of output or the electric current way of output can be chosen as.When adopting the voltage way of output, the maximum load current of each passage is 20mA, and when output overcurrent (such as output short-circuit), all A0 passages export abnormal, and may cause module damage.Each AO passage synchronization can only use a kind of way of output, when selecting the voltage way of output, what load the current output terminal that should ensure same passage does not take over; When selecting the electric current way of output, what load the output voltage terminals that yet should ensure same passage does not take over; Otherwise, output may be caused abnormal, even damage module.Attention: no matter the analog output channel of module is configured to the voltage way of output or the electric current way of output, to be 20mA must be the maximum output load current of single channel in environment temperature is within the scope of-40 ~ 70 DEG C, when operating ambient temperature is within the scope of 71 ~ 85 DEG C, total load current can only be 60% of rated current, is namely less than 24mA.
Claims (5)
1. a Multifunctional wireless acquisition controller, it is characterized in that, comprise central microprocessor, power supply, wireless communication module, interface, Analog input mModule, analog output module, digital quantity input module, digital output module, central microprocessor is connected with power supply, interface, Analog input mModule, analog output module, digital quantity input module, digital output modular electrical respectively, central microprocessor and wireless communication module wireless telecommunications, interface and the communication of external meters cable network.
2. Multifunctional wireless acquisition controller according to claim 1, is characterized in that, central microprocessor adopts STM32F103 model.
3. Multifunctional wireless acquisition controller according to claim 1 and 2, is characterized in that, interface comprises RS-232 interface, RS-485 interface, CAN interface.
4. Multifunctional wireless acquisition controller according to claim 1 and 2, is characterized in that, wireless communication module adopts 2.4G/433M communication module.
5. Multifunctional wireless acquisition controller according to claim 1 and 2, is characterized in that, wireless communication module adopts GPRS/CDMA communication module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310500476.7A CN104570811A (en) | 2013-10-22 | 2013-10-22 | Multifunctional wireless acquisition controller |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310500476.7A CN104570811A (en) | 2013-10-22 | 2013-10-22 | Multifunctional wireless acquisition controller |
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| Publication Number | Publication Date |
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| CN104570811A true CN104570811A (en) | 2015-04-29 |
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| CN201310500476.7A Pending CN104570811A (en) | 2013-10-22 | 2013-10-22 | Multifunctional wireless acquisition controller |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104950773A (en) * | 2015-06-26 | 2015-09-30 | 中国航天科工集团第三研究院第八三五七研究所 | Mixed type intelligent data collecting and processing device |
| CN106131056A (en) * | 2016-08-17 | 2016-11-16 | 广州中国科学院沈阳自动化研究所分所 | A kind of wireless industrial adapter and method of work thereof |
-
2013
- 2013-10-22 CN CN201310500476.7A patent/CN104570811A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104950773A (en) * | 2015-06-26 | 2015-09-30 | 中国航天科工集团第三研究院第八三五七研究所 | Mixed type intelligent data collecting and processing device |
| CN104950773B (en) * | 2015-06-26 | 2017-11-03 | 中国航天科工集团第三研究院第八三五七研究所 | Mixed type intelligent data acquisition processing unit |
| CN106131056A (en) * | 2016-08-17 | 2016-11-16 | 广州中国科学院沈阳自动化研究所分所 | A kind of wireless industrial adapter and method of work thereof |
| CN106131056B (en) * | 2016-08-17 | 2022-10-11 | 广州中国科学院沈阳自动化研究所分所 | Industrial wireless adapter and working method thereof |
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Application publication date: 20150429 |