CN210294837U - Data transmission device and data acquisition system supporting multi-path serial communication - Google Patents
Data transmission device and data acquisition system supporting multi-path serial communication Download PDFInfo
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- CN210294837U CN210294837U CN201921177069.6U CN201921177069U CN210294837U CN 210294837 U CN210294837 U CN 210294837U CN 201921177069 U CN201921177069 U CN 201921177069U CN 210294837 U CN210294837 U CN 210294837U
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Abstract
The application relates to a data transmission device and a data acquisition system supporting multi-path serial communication, and belongs to the technical field of data transmission devices. This application supports data transmission device of multichannel serial communication, includes: a plurality of 485 interfaces; the plurality of 485 driving chips are connected with the plurality of 485 interfaces in a one-to-one corresponding manner; the single chip microcomputer is connected with the plurality of 485 driving chips; the Ethernet driving chip is connected with the singlechip; the network transformer is connected with the Ethernet drive chip; and the Ethernet interface is connected with the network transformer. Through the application, the multi-channel 485 signal can be integrated into one Ethernet signal to be sent to the receiving terminal equipment, so that the communication speed between the field equipment and the receiving terminal equipment is improved.
Description
Technical Field
The application belongs to the technical field of data transmission devices, and particularly relates to a data transmission device and a data acquisition system supporting multi-path serial communication.
Background
In the industrial data acquisition process, data are transmitted mainly through industrial serial bus communication, and the scheme mainly used in the industry at present is to use an MODBUS-485 serial communication mode to connect a large amount of devices in a factory for data reading and transmission. However, in the communication mode of industrial serial bus communication, the problem of slow communication speed exists, for example, a factory needs to connect 500 MODBUS-485 devices, the factory needs to use a large number of cables to connect the master control PLC and 500 MODBUS-485 devices, the master control PLC reads 500 MODBUS-485 device data through single-path serial communication, assuming that each device averagely transmits 10 data, the time for each device to read the data is 20mS, 500 device data are all acquired, and the time for the master control PLC to acquire 500 device data each time is 10S. In the aspect of communication speed, industrial serial bus communication is increasingly unable to meet the requirements of industrial occasions.
SUMMERY OF THE UTILITY MODEL
In order to overcome the problems in the related art at least to a certain extent, the data transmission device and the data acquisition system supporting the multi-path serial communication are provided, the multi-path 485 signal is integrated into one path of Ethernet signal to be sent to the receiving terminal device, the multi-path serial communication is supported, and the communication speed between the field device and the receiving terminal device is improved.
In order to achieve the purpose, the following technical scheme is adopted in the application:
in a first aspect,
the application provides a data transmission device supporting multi-path serial communication, including:
a plurality of 485 interfaces;
the plurality of 485 driving chips are connected with the plurality of 485 interfaces in a one-to-one corresponding manner;
the single chip microcomputer is connected with the plurality of 485 driving chips;
the Ethernet driving chip is connected with the singlechip;
the network transformer is connected with the Ethernet drive chip;
and the Ethernet interface is connected with the network transformer.
Further, the data transmission apparatus further includes:
and the power adapter is used for providing working power supply for the data transmission device.
Further, the data transmission apparatus further includes:
and the LED indicator light is connected with the single chip microcomputer.
Further, the number of the 485 interfaces is six, and correspondingly, the number of the 485 driver chips is also six.
Further, the singlechip adopts an STM32 singlechip.
Furthermore, the plurality of 485 driving chips are 485 driving chips with the model number of ADM 2483.
Further, the network transformer is a network transformer with model number HX1188 NL.
Further, the ethernet driver chip is an ethernet driver chip with model number DP 83848.
Further, the plurality of 485 interfaces are 485 interfaces with the model of 2EDGKC-5.08-3P, and the Ethernet interfaces are Ethernet interfaces with the model of HR 911205C.
In a second aspect of the present invention,
the application provides a data acquisition system, includes:
a data transmission apparatus as claimed in any one of the preceding claims;
a plurality of devices with 485 interfaces, which are correspondingly connected with the plurality of 485 interfaces of the data transmission device one by one; and
and the industrial personal computer is connected with the Ethernet interface of the data transmission device.
This application adopts above technical scheme, possesses following beneficial effect at least:
the application provides a support data transmission device of multichannel serial communication, utilize a plurality of 485 driver chip to receive a plurality of field device's 485 signals through the 485 interface that correspond separately, and with signal transmission for the singlechip, the singlechip receives multichannel 485 signals, and be integrated into ethernet signal transmission for ethernet driver chip of the same kind with multichannel 485 signals, by ethernet driver chip through network transformer with this ethernet signal transmission of the same kind with ethernet interface connection's receiving terminal equipment, realize through this application that it sends ethernet signal to receiving terminal equipment to integrate multichannel 485 signals of the same kind, with support multichannel serial communication, help promoting the communication speed between field device and receiving terminal equipment.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a data transmission device supporting multiple serial communications according to an embodiment of the present application;
FIG. 2 is a schematic diagram of a data acquisition system according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a data transmission device supporting multiple serial communications according to another embodiment of the present application;
FIG. 4 is a schematic diagram of a data acquisition system according to an embodiment of the present application;
in the figure:
1-a data acquisition system;
10-a data transmission device supporting multi-path serial communication;
101-; 102-485 driving chip; 103-a single chip microcomputer; 104-an ethernet driver chip; 105-a network transformer; 106-ethernet interface; 107-power adapter; 108-LED indicator light.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail below. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a data transmission device supporting multiple serial communications according to an embodiment of the present application.
As shown in fig. 1, the data transmission device 10 supporting multiple serial communications includes:
a plurality of 485 interfaces 101;
the plurality of 485 driving chips 102 are connected with the plurality of 485 interfaces 101 in a one-to-one correspondence manner;
the single chip microcomputer 103 is connected with the plurality of 485 driving chips 102;
the Ethernet drive chip 104 is connected with the singlechip 103;
a network transformer 105 connected to the ethernet driver chip 104;
and an ethernet interface 106 connected to the network transformer 105.
In the above embodiment, in a specific application, the plurality of 485 interfaces 101 are used as input interfaces, the plurality of 485 interfaces 101 are respectively connected to corresponding external devices with 485 interfaces through cables, and in an actual industrial application, the external devices with 485 interfaces may be various monitoring meters, for example, a temperature collecting meter with 485 communication function, a power collecting meter with 485 communication function, and the like.
The plurality of 485 driver chips 102 receive 485 signals of the plurality of external devices through the respective corresponding 485 interfaces 101, in practical application, the 485 driver chips 102 serve as 485 signal receiving and transmitting devices, the 485 signals are received by the 485 driver chips 102 firstly, and then the signals are transmitted to the single chip microcomputer 103, so that the single chip microcomputer 103 can be protected.
After the single-chip microcomputer 103 receives the multiple 485 signals, the multiple 485 signals are integrated into one ethernet signal, in a specific application, when the single-chip microcomputer 103 integrates the multiple 485 signals into one ethernet signal, the conversion of signal data from the MODBUS communication protocol to the ethernet communication protocol is involved, it needs to be pointed out that the conversion of signal data from the MODBUS communication protocol to the ethernet communication protocol belongs to the content of the prior art, in an actual application, a person skilled in the art can obtain the signal data from the related prior art, and the application does not relate to the related improvement of the signal data, and the application is only slightly mentioned herein.
In practical application, the ethernet driver chip 104 is used as a transceiver for ethernet signals, and after the ethernet driver chip 104 receives the ethernet signals sent by the single-chip microcomputer 103, the ethernet signals are transmitted to a receiving terminal device connected to the ethernet line of the ethernet interface 106 through the network transformer 105, so that the data signals of each external device are integrated into one ethernet signal and transmitted to the receiving terminal device.
This application utilizes a plurality of 485 driver chip to receive a plurality of external device's 485 signals through 485 interfaces that correspond separately, and with signal transmission for the singlechip, the singlechip receives multichannel 485 signals, and with the integrated ethernet signal transmission for ethernet driver chip of a kind of multichannel 485 signals, by ethernet driver chip through network transformer with this ethernet signal transmission all the way give ethernet interface connection's receiving terminal, realize through this application that it sends ethernet signal to ethernet receiving terminal all the way to integrate multichannel 485 signals, in order to support multichannel serial communication, help promoting the communication speed between field device and receiving terminal equipment.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a data transmission device supporting multiple serial communications according to another embodiment of the present application.
As shown in fig. 2, the data transmission device 10 supporting multiple serial communications further includes:
a power adapter 107 for providing an operating power supply for the data transmission device 10.
In a specific application, the power adapter 107 can convert ac power into dc power for the data transmission device 10, so as to provide stable operating power for the data transmission device 10.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a data transmission device supporting multiple serial communications according to another embodiment of the present application.
As shown in fig. 3, the data transmission device 10 supporting multiple serial communications further includes:
and the LED indicator light 108 is connected with the singlechip 103.
The data transmission device 10 supporting the multi-path serial communication can have a status indication function through the LED indicator 108, for example, when the data transmission device 10 supporting the multi-path serial communication is powered on to operate, the LED indicator 108 is turned on to indicate an operating status.
As shown in fig. 1-3, in one embodiment, the number of the 485 interfaces 101 is six, and correspondingly, the number of the 485 driver chips 102 is also six. The data transmission device 10 supporting the multi-path serial communication can support the access of 6 field devices.
The following description describes specific product applications of the above components of the present application, so that those skilled in the art can better understand the technical contents of the present application.
In specific application, the single chip microcomputer 103 may be an STM32 single chip microcomputer, which can meet embedded application design with high performance, low cost and low power consumption, and the performance of which can meet the application of the data transmission device 10 supporting multiple serial communications of the present application.
In specific application, the plurality of 485 driver chips 102 may all adopt 485 driver chips with the model number of ADM2483, and are integrated galvanic isolation devices, so that the device is suitable for bidirectional data communication of a multi-point bus transmission line, and the signal isolation transmission function of the device can achieve a good protection effect on a single chip microcomputer.
In a specific application, the network transformer 105 may be a network transformer 105 with model number HX1188 NL. For network transformers, also known as ethernet transformers, which mainly have signal level coupling, for example, signals can be enhanced to make transmission distances longer; the Ethernet driver chip 104 is isolated from the outside, the anti-interference capability is greatly enhanced, and the chip is greatly protected (such as lightning stroke).
In a specific application, the ethernet driver chip 104 is an ethernet driver chip 104 with model number DP 83848. The DP83848 has full function, low power consumption, high integration and other performances, for example, it can support 10/100M ethernet communication, and also support MII and RMI interface modes.
In a specific application, the plurality of 485 interfaces 101 may all adopt 485 interfaces of a type 2EDGKC-5.08-3P, and the ethernet interface 106 may adopt an ethernet interface 106 of a type HR 911205C.
Referring to fig. 4, fig. 4 is a schematic structural diagram of a data acquisition system according to an embodiment of the present application.
As shown in fig. 4, the data acquisition system 1 includes:
a data transmission device 10 as claimed in any one of the preceding claims;
a plurality of devices 11 having 485 interfaces, which are connected to the plurality of 485 interfaces 101 of the data transmission device 10 in a one-to-one correspondence manner; and
and the industrial personal computer 12 is connected with the Ethernet interface 106 of the data transmission device 10.
In a specific application, the plurality of devices 11 with 485 interfaces may be various monitoring instruments as field devices, for example, a temperature collecting instrument with 485 communication function, a power collecting instrument with 485 communication function, and the like.
The industrial personal computer 12 is used as a receiving terminal device for receiving the ethernet signal which is sent by the data transmission device 10 and integrates multiple 485 signals into one path, thereby being beneficial to improving the communication speed between the plurality of devices 11 with 485 interfaces and the industrial personal computer 12.
With regard to the data acquisition system 1 in the above-described related embodiment, the specific manner in which the data transmission device 10 performs the operation has been described in detail in the above-described related embodiment, and will not be described in detail here.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
It should be noted that, in the description of the present application, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, in the description of the present application, the meaning of "plurality" means at least two unless otherwise specified.
In addition, functional units in the embodiments of the present application may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.
Claims (10)
1. A data transmission device supporting multiple serial communications, comprising:
a plurality of 485 interfaces;
the plurality of 485 driving chips are connected with the plurality of 485 interfaces in a one-to-one corresponding manner;
the single chip microcomputer is connected with the plurality of 485 driving chips;
the Ethernet driving chip is connected with the singlechip;
the network transformer is connected with the Ethernet drive chip;
and the Ethernet interface is connected with the network transformer.
2. The data transmission apparatus according to claim 1, characterized in that the data transmission apparatus further comprises:
and the power adapter is used for providing working power supply for the data transmission device.
3. The data transmission apparatus according to claim 1 or 2, characterized in that the data transmission apparatus further comprises:
and the LED indicator light is connected with the single chip microcomputer.
4. The data transmission device as claimed in claim 1, wherein the number of the 485 interfaces is six, and correspondingly, the number of the 485 driver chips is also six.
5. The data transmission device of claim 1, wherein the single chip microcomputer is an STM32 single chip microcomputer.
6. The data transmission device as claimed in claim 1, wherein the plurality of 485 driver chips are 485 driver chips with the model number of ADM 2483.
7. The data transmission device of claim 1, wherein the network transformer is a network transformer of type HX1188 NL.
8. The data transmission device as claimed in claim 1, wherein the ethernet driver chip is an ethernet driver chip with model number DP 83848.
9. The data transmission device according to claim 1, wherein the plurality of 485 interfaces are 485 interfaces with model 2EDGKC-5.08-3P, and the Ethernet interface is an Ethernet interface with model HR 911205C.
10. A data acquisition system, comprising:
a data transmission arrangement as claimed in any one of claims 1 to 9;
a plurality of devices with 485 interfaces, which are correspondingly connected with the plurality of 485 interfaces of the data transmission device one by one; and
and the industrial personal computer is connected with the Ethernet interface of the data transmission device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921177069.6U CN210294837U (en) | 2019-07-24 | 2019-07-24 | Data transmission device and data acquisition system supporting multi-path serial communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921177069.6U CN210294837U (en) | 2019-07-24 | 2019-07-24 | Data transmission device and data acquisition system supporting multi-path serial communication |
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| Publication Number | Publication Date |
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| CN210294837U true CN210294837U (en) | 2020-04-10 |
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| CN201921177069.6U Active CN210294837U (en) | 2019-07-24 | 2019-07-24 | Data transmission device and data acquisition system supporting multi-path serial communication |
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