CN212965791U - Distributed IO acquisition system - Google Patents
Distributed IO acquisition system Download PDFInfo
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- CN212965791U CN212965791U CN202021703646.3U CN202021703646U CN212965791U CN 212965791 U CN212965791 U CN 212965791U CN 202021703646 U CN202021703646 U CN 202021703646U CN 212965791 U CN212965791 U CN 212965791U
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Abstract
The utility model discloses a distributed IO acquisition system, which comprises a first LORA wireless radio frequency module, a second LORA wireless radio frequency module and an extension module; the first LORA wireless radio frequency module is provided with a first RS485 interface and a first Ethernet interface, and the second LORA wireless radio frequency module is provided with a second RS485 interface, a second Ethernet interface and a first expansion interface; the expansion module is provided with a second expansion interface; the first expansion interface is connected with the second expansion interface; the first LORA wireless radio frequency module is wirelessly connected with the second LORA wireless radio frequency module. The utility model discloses be applied to the industrial control field, be applied to distributing type IO collection system with LORA technique, ethernet and RS485 technique, the interface is abundant, can adapt to different application scenario, can adopt LORA wireless connection or wired connection according to practical application scenario, more has flexibility and practicality.
Description
Technical Field
The utility model relates to an industrial control field, in particular to distributing type IO collection system.
Background
In the industrial control application field, there are many process signal acquisition or equipment control points which are relatively dispersed, the mutual distance is relatively long, some can reach more than 1000 meters, when the project is implemented, the signal acquisition and control can be connected with an upper control system (generally an industrial computer, a PLC, a DCS, an industrial touch screen and the like) only by arranging cables with corresponding specifications, so as to facilitate the acquisition and control of the signals by the upper industrial system.
Process signals include the operational status of many industrial on-line meters and devices, such as: the device comprises an ammeter, a voltmeter, a power meter, a temperature instrument, a humidity instrument, a flow instrument, a pressure instrument, a PH instrument, a conductivity instrument, a turbidity instrument and other instrument monitoring data or feedback signals of operation, faults, frequencies and the like of a water pump, a valve and special equipment. The control point of the device is mainly some actuators at the far end, such as a motor, a valve, start and stop control of special equipment and the like.
The method for collecting process signals and controlling remote equipment points by means of cabling from an upper control system to various points is the most common design scheme at present, but the design scheme has a single communication mode and is not suitable for adopting the design scheme in some occasions.
SUMMERY OF THE UTILITY MODEL
The utility model provides a distributed IO collection system to solve one or more technical problem that exist among the prior art, provide a profitable selection or create the condition at least.
In a first aspect, an embodiment of the present invention provides a distributed IO acquisition system, including a first LORA wireless radio frequency module, a second LORA wireless radio frequency module, and an extension module;
the first LORA wireless radio frequency module is provided with a first RS485 interface and a first Ethernet interface, and the second LORA wireless radio frequency module is provided with a second RS485 interface, a second Ethernet interface and a first expansion interface; the expansion module is provided with a second expansion interface; the first expansion interface is connected with the second expansion interface;
the first LORA wireless radio frequency module is wirelessly connected with the second LORA wireless radio frequency module;
the first RS485 interface is used for being connected with an external upper control system;
the first Ethernet interface is used for being connected with an external upper control system;
the second RS485 interface is used for being connected with an external upper control system;
and the second Ethernet interface is used for connecting with an external upper control system.
Furthermore, first LORA wireless radio frequency module still includes first main chip, first LORA chip, first ethernet chip and first power module, first main chip is connected with first LORA chip, first ethernet chip and first power module respectively, and first main chip passes through first ethernet chip and first ethernet interface connection.
Further, the first LORA wireless radio frequency module is further provided with a first USB interface.
Furthermore, the second LORA wireless radio frequency module further comprises a second main chip, a second LORA chip, a second Ethernet chip and a second power module, wherein the second main chip is respectively connected with the second LORA chip, the second Ethernet chip and the second power module, and the second main chip is connected with the second Ethernet interface through the second Ethernet chip.
Further, the second LORA wireless rf module is further provided with a second USB interface.
Further, the expansion module further comprises a third main chip and a third power module, the third main chip is connected with the third power module, and the expansion module further comprises at least one of the following components:
the digital signal input module is connected with the third main chip;
the digital signal output module is connected with the third main chip;
the analog voltage/current input module is connected with the third main chip;
and the analog voltage/current output module is connected with the third main chip.
Furthermore, the first main chip and the second main chip adopt ARM Cortex-M4 series chips, and the third main chip adopts ARM Cortex-M0 series chips.
Further, the first ethernet interface and the second ethernet interface are both RJ45 network ports.
Furthermore, the expansion module is further provided with a third expansion interface, and the third expansion interface is used for being connected with other expansion modules.
Further, the first expansion interface, the second expansion interface and the third expansion interface are all RS485 interfaces.
The utility model has the advantages that:
1. the LORA technology, the Ethernet and the RS485 technology are applied to the distributed IO acquisition system, and in a certain physical distance (the longest distance can reach 10 kilometers), only the extension module needs to be powered on, relevant data can be acquired to the upper control system, the interfaces are rich, and the reliability is high.
2. Can adapt to different application occasions, can select LORA wireless connection or wired connection according to actual application occasion, more have flexibility and practicality.
Drawings
In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures represent only some embodiments of the invention, not all embodiments, and that a person skilled in the art can also derive other designs and figures from these figures without inventive effort.
Fig. 1 is a schematic structural diagram of a distributed IO acquisition system according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a first LORA wireless rf module according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a second LORA wireless rf module according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of an expansion module according to an embodiment of the present invention.
Fig. 5 is a schematic diagram of a connection relationship of the distributed IO acquisition system according to an embodiment of the present invention.
Fig. 6 is a schematic diagram of a connection relationship of a distributed IO acquisition system according to another embodiment of the present invention.
Fig. 7 is a schematic diagram of a connection relationship of a distributed IO acquisition system according to another embodiment of the present invention.
Fig. 8 is a schematic diagram of a connection relationship of a distributed IO acquisition system according to another embodiment of the present invention.
Description of reference numerals: 100-first LORA wireless radio frequency module, 110-first RS485 interface, 120-first Ethernet interface, 130-first main chip, 140-first LORA chip, 150-first power module, 160-first Ethernet chip, 170-first USB interface, 200-second LORA wireless radio frequency module, 210-second RS485 interface, 220-second Ethernet interface, 230-first expansion interface, 240-second LORA chip, 250-second power module, 260-second Ethernet chip, 270-second USB interface, 280-second main chip, 300-expansion module, 310-second expansion interface, 320-third main chip, 330-third power module, 340-digital signal input module, 350-digital signal output module, 360-analog voltage/current input module, 370-analog voltage/current output module, 380-third expansion interface.
Detailed Description
The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and other embodiments obtained by those skilled in the art without inventive labor based on the embodiments of the present invention all belong to the protection scope of the present invention. In addition, all the coupling/connection relationships mentioned herein do not mean that the components are directly connected, but mean that a better coupling structure can be formed by adding or reducing coupling accessories according to specific implementation conditions. The utility model provides an each technical feature can the interactive combination under the prerequisite of conflict each other.
Fig. 1 is a schematic structural diagram of a distributed IO acquisition system provided by an embodiment of the present invention. As shown in fig. 1, the distributed IO acquisition system includes a first LORA wireless radio frequency module 100, a second LORA wireless radio frequency module 200, and an expansion module 300, where the second LORA wireless radio frequency module 200 is connected to the expansion module 300;
the first LORA wireless radio frequency module 100 is provided with a first RS485 interface 110 and a first Ethernet interface 120, and the second LORA wireless radio frequency module 200 is provided with a second RS485 interface 210, a second Ethernet interface 220 and a first expansion interface 230; the expansion module 300 sets a second expansion interface 310; the first expansion interface 230 is connected with the second expansion interface 310;
the first LORA wireless radio frequency module 100 is wirelessly connected with the second LORA wireless radio frequency module 200;
the first RS485 interface 110 is used for connecting with an external upper control system;
a first ethernet interface 120 for connecting with an external upper control system;
the second RS485 interface 210 is used for connecting with an external upper control system;
and a second ethernet interface 220 for connecting with an external upper control system.
In one embodiment, the first LORA radio may be wirelessly connected to a plurality of second LORA radio, and the second LORA radio may be connected to a plurality of expansion modules. Specifically, the first LORA radio can communicate wirelessly with 128 second LORA radios at most simultaneously, and the second LORA radio can expand by 128 expansion modules at most.
In one embodiment, the first LORA radio 200 communicates with the second LORA radio 300 via LORA radio waves.
The second LORA wireless radio module 200 is wired via the first expansion interface 230 and the second expansion interface 310 of the expansion module 300.
The expansion module 300 is a module having various data acquisition and control functions, and includes 4 functions, i.e., DI (for acquiring device status and switching value signals), DO (for controlling the start and stop of a device mechanism and switching value signals), AI (for acquiring process instrument data and current or voltage input signals), and AO (for adjusting the device operation rate and current or voltage output signals). The expansion end module can be configured into 1 or at most 4 hardware modules configured by the 4 functions according to requirements so as to be suitable for different application occasions.
As shown in fig. 2, the first LORA wireless rf module 100 includes a first RS485 interface 110, a first ethernet interface 120, a first main chip 130, a first LORA chip 140, a first power module 150, a first ethernet chip 160 and a first USB interface 170, where the first main chip 130 is connected to the first LORA chip 140, the first ethernet chip 160 and the first power module 150, and the first main chip 130 is connected to the first ethernet interface 120 through the first ethernet chip 160. The first voltage module 150 is configured to provide a supply voltage to the first LORA wireless rf module 100.
As shown in fig. 3, the second LORA wireless rf module 200 includes a second RS485 interface 210, a second ethernet interface 220, a first expansion interface 230, a second LORA chip 240, a second power module 250, a second ethernet chip 260, a second USB interface 270, and a second main chip 280, where the second main chip 280 is connected to the second LORA chip 240, the second ethernet chip 260, and the second power module 250, respectively, and the second main chip 280 is connected to the second ethernet interface 220 through the second ethernet chip 260. The second power module 250 is used to provide a supply voltage to the second LORA wireless rf module 200.
As shown in fig. 4, the expansion module 300 includes a second expansion interface 310, a third main chip 320 and a third power module 330, the third main chip 320 is connected to the third power module 330, and the third power module 330 is used for providing a power supply voltage to the expansion module. The expansion module 300 further comprises at least one of:
a digital signal input module (DI module) 340 connected to the third main chip 320;
a digital signal output module (DO module) 350 connected to the third main chip 320;
an analog voltage/current input module (AI module) 360 connected to the third main chip 320;
an analog voltage/current output module (AO module) 370 connected to the third main chip 320.
The connection mode of the second LORA wireless rf module 200 and the expansion module 300 is: the first expansion interface 230 and the second expansion interface 310 are connected.
The first expansion interface 230 and the second expansion interface 310 are both RS485 interfaces, and the second LORA wireless rf module 200 is connected to the expansion module 300 through an RS485 bus.
The first USB interface 170 is used to connect to an external device and obtain a configuration file configured by the first LORA wireless rf module 100.
And a second USB interface 270, configured to connect to an external device and obtain a configuration file configured by the second LORA wireless rf module 200.
The expansion module 300 further includes a third expansion interface 380, and the third expansion interface 380 may be an RS485 interface for connecting with other expansion modules.
And a digital signal input module (DI module) 340 for acquiring the device state and the switching value signal.
And a digital signal output module (DO module) 350 for controlling the start and stop of the equipment mechanism and switching value signals.
An analog voltage/current input module (AI module) 360 for collecting meter data, current or voltage signals.
An analog voltage/current output module (AO module) 370 for adjusting the device operating rate, current or voltage signal.
The first main chip 130 and the second main chip 280 are both ARM Cortex-M4 series chips, and the third main chip 320 is ARM Cortex-M0 series chips.
The first RS485 interface 110 of the first LORA wireless rf module 100 may be configured to connect with an RS485 interface of an external upper control system;
a first ethernet interface 120 of the first LORA wireless rf module 100, configured to connect to an ethernet interface of an external upper control system;
a second RS485 interface 210 of the second LORA wireless rf module 200 may be configured to connect to an RS485 interface of an external upper control system;
In one embodiment, the first ethernet interface and the second ethernet interface are both RJ45 ports.
In one embodiment, the second LORA wireless rf module and the expansion module are disposed at a signal acquisition and device control point, and the first LORA wireless rf module is disposed at an upper control system end.
The upper control system can be connected with the first LORA wireless radio frequency module through an RS485 bus or an RJ45 network cable, and acquires the acquisition signal of the expansion module and controls the expansion module through the wireless communication between the first LORA wireless radio frequency module and the second LORA wireless radio frequency module.
The upper control system can also be connected with the second LORA wireless radio frequency module through an RS485 bus or an RJ45 network cable to acquire the acquisition signal of the expansion module and control the expansion module.
When wireless communication is normal, can select first LORA wireless radio frequency module and second LORA wireless radio frequency module to carry out wireless connection, as shown in fig. 5, upper control system and first RS485 interface connection of first LORA wireless radio frequency module, first LORA wireless radio frequency module and second LORA wireless radio frequency module carry out wireless communication through the antenna, and second LORA wireless radio frequency module is connected with the extension module.
When the wireless communication is normal, the first LORA wireless radio frequency module and the second LORA wireless radio frequency module can be selected to be wirelessly connected, as shown in fig. 6, the upper control system is connected with the first ethernet interface of the first LORA wireless radio frequency module, the first LORA wireless radio frequency module and the second LORA wireless radio frequency module are wirelessly communicated through the antenna, and the second LORA wireless radio frequency module is connected with the expansion module.
When the wireless communication is normal, the first LORA wireless radio frequency module and the second LORA wireless radio frequency module perform wireless communication, the use of cables is reduced, and the wireless communication distance can reach 10 kilometers.
When wireless communication receives the occasion that disturbs or wireless communication can't connect, first LORA wireless radio frequency module and the wireless radio frequency module of second LORA can't carry out wireless communication, can select upper control system and the wireless radio frequency module of second LORA to pass through RS485 bus or RJ45 net twine connection.
When the wireless communication is interfered or cannot be connected, as shown in fig. 7, the upper control system is connected to the second RS485 interface of the second LORA wireless rf module, and the second LORA wireless rf module is connected to the expansion module.
When the wireless communication is interfered or the wireless communication cannot be connected, as shown in fig. 8, the upper control system is connected to the second ethernet interface of the second LORA wireless rf module, and the second LORA wireless rf module is connected to the expansion module.
The utility model discloses a distributed IO collection system, including first LORA wireless radio frequency module, second LORA wireless radio frequency module and extension module, first LORA wireless radio frequency module has set up first RS485 interface and first ethernet interface, second LORA wireless radio frequency module sets up second RS485 interface, the second ethernet interface, can be according to the application of reality, be connected first RS485 interface or first ethernet interface and outside upper control system, perhaps be connected second RS485 interface or second ethernet interface and outside upper control system. Being applied to distributed IO collection system with LORA technique, ethernet and RS485 technique, the interface is abundant, can adapt to different application scenario, can adopt LORA wireless connection or wired connection according to actual application scenario, more has flexibility and practicality.
While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the foregoing and various other changes, omissions and deviations in the form and detail thereof may be made without departing from the scope of this invention.
Claims (9)
1. A distributed IO acquisition system is characterized by comprising a first LORA wireless radio frequency module, a second LORA wireless radio frequency module and an expansion module;
the first LORA wireless radio frequency module is provided with a first RS485 interface and a first Ethernet interface, and the second LORA wireless radio frequency module is provided with a second RS485 interface, a second Ethernet interface and a first expansion interface; the expansion module is provided with a second expansion interface; the first expansion interface is connected with the second expansion interface;
the first LORA wireless radio frequency module is wirelessly connected with the second LORA wireless radio frequency module;
the first RS485 interface is used for being connected with an external upper control system;
the first Ethernet interface is used for being connected with an external upper control system;
the second RS485 interface is used for being connected with an external upper control system;
and the second Ethernet interface is used for connecting with an external upper control system.
2. The distributed IO acquisition system of claim 1, wherein the first LORA wireless rf module further includes a first main chip, a first LORA chip, a first ethernet chip, and a first power module, the first main chip is connected to the first LORA chip, the first ethernet chip, and the first power module, and the first main chip is connected to the first ethernet interface through the first ethernet chip.
3. The distributed IO acquisition system of claim 2 wherein the first LORA wireless rf module further provides a first USB interface.
4. The distributed IO acquisition system of claim 1, wherein the second LORA wireless rf module further includes a second main chip, a second LORA chip, a second ethernet chip, and a second power module, the second main chip is connected to the second LORA chip, the second ethernet chip, and the second power module, and the second main chip is connected to the second ethernet interface through the second ethernet chip.
5. The distributed IO acquisition system of claim 4 wherein the second LORA wireless rf module further provides a second USB interface.
6. The distributed IO acquisition system of claim 5, wherein the expansion module further comprises a third main chip and a third power module, the third main chip is connected to the third power module, and the expansion module further comprises at least one of:
the digital signal input module is connected with the third main chip;
the digital signal output module is connected with the third main chip;
the analog voltage/current input module is connected with the third main chip;
and the analog voltage/current output module is connected with the third main chip.
7. The distributed IO acquisition system of any one of claims 2 to 6 wherein the first and second master chips each employ an ARM Cortex-M4 series chip and the third master chip employs an ARM Cortex-M0 series chip.
8. The distributed IO acquisition system of claim 1 wherein the first ethernet interface and the second ethernet interface are both RJ45 ports.
9. The distributed IO acquisition system of claim 1, wherein the first expansion interface and the second expansion interface are both RS485 interfaces.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021703646.3U CN212965791U (en) | 2020-08-14 | 2020-08-14 | Distributed IO acquisition system |
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| CN202021703646.3U CN212965791U (en) | 2020-08-14 | 2020-08-14 | Distributed IO acquisition system |
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