CN212588360U - Power data transmission device and system - Google Patents
Power data transmission device and system Download PDFInfo
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- CN212588360U CN212588360U CN202020564001.XU CN202020564001U CN212588360U CN 212588360 U CN212588360 U CN 212588360U CN 202020564001 U CN202020564001 U CN 202020564001U CN 212588360 U CN212588360 U CN 212588360U
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Abstract
The utility model provides a power data transmission device, which comprises a CPU control unit, an RS485 communication unit, a network communication unit and a storage unit, wherein the RS485 communication unit, the network communication unit and the storage unit are respectively connected with the CPU control unit; the CPU control unit collects power data of a lower computer through the RS485 communication unit by adopting an MOUBUS-RTU protocol, the power data are transmitted to the remote host control platform through the network communication unit by adopting an MODBUS-TCP protocol, and the storage unit is used for storing data generated when the device runs; the power supply unit is used for respectively supplying power to the CPU control unit, the RS485 communication unit and the network communication unit. The utility model discloses still provide electric power data transmission system, carry out the network deployment by a plurality of electric power data transmission device through router/switch and/or communication supervisor and connect, the network deployment mode is nimble, and transmission data is fast, the transmission data volume is big, realizes the quick transmission of the big data volume of electric power data.
Description
Technical Field
The utility model belongs to the technical field of the data transmission technique and specifically relates to an electric power data transmission device and system is related to for each item parameter data transmission such as electric fire and fire control power supply field voltage, electric current, temperature, electric leakage and warning.
Background
In the field of power monitoring for electrical fires, fire protection power supplies, and the like, there are thousands of sensors, detectors, or other devices interconnected to form a control network. As a tool for managing data in an information system, the most common communication bus for connecting these devices is the RS485 bus. With the rapid development of society, network architectures such as ethernet/internet and the like have gradually been widely adopted in electrical systems, and gradually replace the conventional serial communication to become a new mainstream. Under such a trend, the more sophisticated open network technologies, such as TCP/IP and ethernet, are increasingly being applied to various electrical system monitoring fields to connect and control all devices. Therefore, it is urgently needed to develop a data transmission device for data conversion from an RS485 bus interface to an ethernet interface, and an economical and quick solution for data transmission is sought.
SUMMERY OF THE UTILITY MODEL
According to the problem that prior art exists, the utility model provides an electric power data transmission device and system provides and is transmitted by the data conversion of RS485 bus to ethernet, and the stable performance is with low costs, and easy extension is convenient for install and the modular management, adapts to the demand of complicated operating mode.
The technical scheme of the utility model is that:
1. a power data transmission device comprises a CPU control unit, an RS485 communication unit, a network communication unit and a storage unit, wherein the RS485 communication unit, the network communication unit and the storage unit are respectively connected with the CPU control unit; the CPU control unit collects power data of a lower computer through an RS485 communication unit by adopting an MOUBUS-RTU protocol, and transmits the power data to a remote host control platform through a network communication unit by adopting an MODBUS-TCP protocol, and the storage unit is used for storing data generated when the device runs; the power supply unit is used for respectively supplying power to the CPU control unit, the RS485 communication unit and the network communication unit.
2. The CPU control unit is connected with the RS485 communication unit with magnetic isolation through TTL level, the RS485 communication unit converts the differential level of the RS485 into TTL level which can be received by the CPU control unit through the bus transceiver, and real-time data acquisition and protocol conversion of a lower computer by the CPU are met.
3. The network communication unit is connected with the CPU control unit through an Ethernet chip PHY, and transmits the data after protocol conversion to a remote host through a network through a PHY chip and a network port with an isolation transformer.
4. The network port works in a TCP server mode and is provided with TCP service ports, each TCP service port is provided with a fixed port number, each path of RS485 serial port is linked with the network port through a corresponding port number, and each path of serial port-to-network port link is logically independent; and the equipment connected with the electric power data transmission device through the network port performs read-write operation on each path of port in a client form, so as to realize communication with the corresponding RS485 serial port.
5. The RS485 communication unit comprises 8 RS485 serial ports, the network communication unit comprises one 10M/100M network port and 8 ports corresponding to the 8 RS485 serial ports respectively.
6. The power supply unit adopts a DC/DC chip and converts 9-36V direct current voltage into 5V; 5V is converted into 3.3V through the LDO to respectively supply power to the CPU and the network communication unit; the 5V is connected with the RS485 communication unit through the DC/DC isolation power supply module to supply power for the RS485 communication unit.
7. The power data transmission system adopting the power data transmission device further comprises a remote host, a router/switch and/or a communication management machine, the power data transmission devices are connected in a networking mode through the router/switch and/or the communication management machine, and the remote host simultaneously accesses the power data transmission devices through the router/switch and/or the communication management machine to achieve data transmission of large data volume.
8. The remote host is directly connected with the communication manager, the communication manager is connected with a plurality of power data transmission devices, the number of the connectable power data transmission devices corresponds to the number of the network ports of the communication manager, and the remote host accesses the connected power data transmission devices through the communication manager.
9. The remote host is connected with a plurality of electric power data transmission devices through a router/switch and is directly connected with a communication manager, and the communication manager is also connected with the plurality of electric power data transmission devices through the router/switch; the remote host can directly access the communication manager and the plurality of power data transmission devices through the router/switch, and the communication manager can access the plurality of power data transmission devices through the router/switch.
10. The remote host is connected with the plurality of power data transmission devices and the communication manager through the router/switch, the communication manager is also connected with the plurality of power data transmission devices through the router/switch, the remote host can directly access the communication manager through the switch/router, the remote host can also directly access the power data transmission devices through the switch/router, and the communication manager can access the power data transmission devices through the router/switch.
The technical effects of the utility model:
the utility model provides a power data transmission device and system provides and is transmitted by the data conversion of RS485 bus to ethernet, the stable performance, and is with low costs, easy extension, the installation and the modularization management of being convenient for adapt to the demand of complicated operating mode.
The utility model discloses a data transmission problem of traditional RS485 interface host computer and network interface host computer has been solved to the device, has designed 8 serial port server products-electric power data transmission device of a section, has 8 way RS485 interfaces and 10M/100M net gapes all the way, is an independent smart machine that has CPU and embedded OS and complete TCP/IP protocol stack. The product supports two working modes, namely an 8-channel serial port-to-internet port data transparent transmission mode and a MODBUS-RTU (modulation bus-remote terminal unit) to MODBUS-TCP (transmission control protocol) mode. Each serial port-to-network port link is independent and not interfered with each other; the product works in a server mode, each serial port-to-network port link supports 1 client-side connection, and parameter information can be configured through a webpage, so that actual requirements are met.
The utility model discloses connect a plurality of electric power data transmission device through router/switch and/or communication management machine network deployment and constitute electric power data transmission system, the network deployment mode is nimble, can expand a plurality of electric power data transmission device, and transmission data is fast, transmission data volume is big, realizes the quick transmission of the big data volume of electric power data.
Drawings
Fig. 1 is a schematic diagram of the structure of the power data transmission device of the present invention.
Fig. 2 is a schematic diagram of mapping relationship between serial ports of the RS485 communication unit and network ports of the network communication unit.
Fig. 3 is a schematic diagram of an embodiment of a power data transmission system networking according to the present invention.
Fig. 4 is a schematic diagram of a power data transmission system networking embodiment of the present invention.
Fig. 5 is a third schematic diagram of an embodiment of a power data transmission system network according to the present invention.
Detailed Description
The embodiments of the present invention will be further described with reference to the accompanying drawings.
Fig. 1 is a schematic diagram of a configuration of the power data transmission device according to the present invention.
A power data transmission device comprises a CPU control unit, an RS485 communication unit, a network communication unit and a storage unit, wherein the RS485 communication unit, the network communication unit and the storage unit are respectively connected with the CPU control unit; the CPU control unit collects power data of a lower computer through the RS485 communication unit by adopting an MOUBUS-RTU protocol, the power data are transmitted to the remote host control platform through the network communication unit by adopting an MODBUS-TCP protocol, and the storage unit is used for storing data generated when the device runs; the power supply unit is used for respectively supplying power to the CPU control unit, the RS485 communication unit and the network communication unit.
The CPU control unit is connected with the RS485 communication unit with magnetic isolation through the TTL level, the RS485 communication unit converts the differential level of the RS485 into the TTL level which can be received by the CPU control unit through the bus transceiver, and the requirements of the CPU on the acquisition of real-time data of a lower computer and protocol conversion are met. The network communication unit is connected with the CPU control unit through an Ethernet chip PHY, and transmits the data after protocol conversion to a remote host through a network through a PHY chip and a network port with an isolation transformer.
As shown in fig. 2, a schematic diagram of a mapping relationship between a serial port of an RS485 communication unit and a network port of a network communication unit is shown.
The network port of the network communication unit works in a TCP server mode, each RS485 serial port corresponds to a TCP service port, each serial port is connected with the network port through the corresponding port, each port has a fixed port number, and each serial port-to-network port link is logically independent and does not interfere with each other. And the equipment connected with the power data transmission device through the network port performs read-write operation on each path of port in a client form, so that communication with the corresponding RS485 serial port can be realized. In this embodiment, the serial port of the RS485 communication unit includes 8 serial ports: the network ports of the network communication units comprise a path of 10M/100M network port, 8 ports corresponding to 8 paths of RS485 serial ports are provided, and the port numbers are 502, 503 and … … 509; and 8 paths of serial ports are respectively linked to the ports corresponding to the network ports through transparent transmission/Modbus protocol conversion, and each path of serial port-to-network port link supports 1 client terminal connection. For example, the device connected to the power data transmission device through the network Port performs read-write operation on the 502 Port in the form of a client, and thus communication with the RS485Port1 can be realized. Under MODBUS conversion mode, the serial port end is connected with the slave device, and the network port end is connected with the host device. And each path of COM serial port of the RS485 can be connected with 256 slave devices at most.
The power supply unit of the electric power data transmission device of the utility model adopts 9-36V direct current power supply, and adopts a DC/DC chip to convert 9-36V direct current voltage into 5V; 5V is converted into 3.3V through the LDO to supply power to the CPU and the network communication unit; the 5V is converted into isolated 5V through the DC/DC isolation power supply module, and the power is supplied to the 485 communication unit.
The utility model discloses an electric power data transmission device can carry out the network deployment with router/switch or communication management machine and connect and constitute electric power data transmission system. The power data transmission system adopting the power data transmission device further comprises a remote host, a router/switch and/or a communication management machine, the power data transmission devices are connected in a networking mode through the router/switch and/or the communication management machine, and the remote host simultaneously accesses the power data transmission devices through the router/switch and/or the communication management machine to achieve data transmission of large data volume.
Fig. 3, fig. 4, and fig. 5 are schematic diagrams illustrating the networking of the power data transmission system according to the present invention. In the figure, OVE-SST-108 is the power data transmission device of the invention, OVE-SST-208 is the communication manager. The specific networking connection mode is as follows:
1. and (3) connecting with a communication manager: as shown in fig. 3, the remote host is directly connected to the communication manager, the communication manager can be connected to a plurality of power data transmission devices, the number of the connectable power data transmission devices corresponds to the number of the ports of the communication manager, and the remote host accesses the connected power data transmission devices through the communication manager. Each network port of the power data transmission device can be connected with a client, a network port of the device can be connected with a network port of the communication manager, the power data transmission device realizes the functions of data acquisition and interface conversion, and the communication manager realizes complex functions of protocol conversion, data processing and the like. In the networking mode, the remote host accesses the power data transmission device through the communication manager, the number of the power data transmission devices which can be connected in the networking mode depends on the number of network ports of the communication manager, the networking mode is low in cost, simple in connection and convenient in wiring, but the speed of data transmission is low, and the networking mode is suitable for occasions with stable requirements and small data volume.
2. Connection to router/switch: as shown in fig. 4 and 5, the network port of the power data transmission device of the present invention is connected to the network port of the router, the network address of the device and the router are configured in the same network segment, and the device is accessed through the router; or the network port of the device is connected with the network port of the switch, directly connected to the switch and accessed to the device through the switch. In fig. 4, the remote host is connected to the plurality of power data transmission devices through the router/switch, and is also directly connected to the communication manager, which is also connected to the plurality of power data transmission devices through the router/switch; the remote host can directly access the communication manager and the plurality of power data transmission devices through the router/switch, and the communication manager can access the plurality of power data transmission devices through the router/switch. The networking mode can bear the transmission under the condition of large data volume, has low data transmission speed and low flexibility, and is suitable for occasions with large data volume for transmission but low speed requirement. In fig. 5, the communication manager is not directly connected to the remote host, the remote host is connected to the plurality of power data transmission devices and the communication manager via the router/switch, the communication manager is also connected to the plurality of power data transmission devices via the router/switch, the remote host can directly access the communication manager via the switch/router, the remote host can directly access the power data transmission devices via the switch/router, and the communication manager can access the power data transmission devices via the router/switch. The networking mode is high in data transmission speed, can undertake transmission under the condition of large data volume, is flexible, can expand a plurality of power data transmission devices, and is suitable for occasions with large data volume and high speed requirements.
The present invention has been described in detail above. The above description of the embodiments is only for the purpose of helping to understand the method of the present invention and its core idea; for those skilled in the art, modifications or equivalent substitutions can be made on the specific embodiments and application ranges according to the idea of the present invention; in summary, the content of the present specification should not be construed as limiting the present invention, and all technical solutions and modifications thereof which do not depart from the spirit and scope of the present invention are covered in the protection scope of the present invention.
Claims (10)
1. A power data transmission device is characterized by comprising a CPU control unit, an RS485 communication unit, a network communication unit and a storage unit, wherein the RS485 communication unit, the network communication unit and the storage unit are respectively connected with the CPU control unit; the CPU control unit collects power data of a lower computer through an RS485 communication unit by adopting an MOUBUS-RTU protocol, and transmits the power data to a remote host control platform through a network communication unit by adopting an MODBUS-TCP protocol, and the storage unit is used for storing data generated when the device runs; the power supply unit is used for respectively supplying power to the CPU control unit, the RS485 communication unit and the network communication unit.
2. The electric power data transmission device of claim 1, wherein the CPU control unit is connected to the RS485 communication unit with magnetic isolation through TTL level, and the RS485 communication unit converts the differential level of the RS485 into TTL level that the CPU control unit can receive through the bus transceiver, so as to meet the requirements of the CPU for the acquisition of real-time data of the lower computer and protocol conversion.
3. The power data transmission device according to claim 1, wherein the network communication unit is connected to the CPU control unit via an ethernet chip PHY, and transmits the protocol-converted data to the remote host via the PHY chip and the network port with the isolation transformer.
4. The electric power data transmission device according to claim 3, wherein the network port operates in a TCP server mode, and has TCP service ports, each TCP service port has a fixed port number, each RS485 serial port is linked with the network port through a corresponding port number, and each serial port-to-network port link is logically independent from each other; and the equipment connected with the electric power data transmission device through the network port performs read-write operation on each path of port in a client form, so as to realize communication with the corresponding RS485 serial port.
5. The power data transmission device according to claim 1, wherein the RS485 communication unit includes 8 RS485 serial ports, and the network communication unit includes one 10M/100M network port having 8 ports corresponding to the 8 RS485 serial ports, respectively.
6. The electric power data transmission device of claim 1, wherein the power supply unit adopts a DC/DC chip to convert 9-36V DC voltage into 5V; 5V is converted into 3.3V through the LDO to respectively supply power to the CPU and the network communication unit; the 5V is connected with the RS485 communication unit through the DC/DC isolation power supply module to supply power for the RS485 communication unit.
7. An electric power data transmission system using the electric power data transmission device according to any one of claims 1 to 6, further comprising a remote host, a router/switch and/or a communication manager, wherein a plurality of electric power data transmission devices are connected in a network via the router/switch and/or the communication manager, and the remote host accesses the plurality of electric power data transmission devices via the router/switch and/or the communication manager simultaneously to realize data transmission of a large data volume.
8. The power data transmission system according to claim 7, wherein the remote host is directly connected to a communication manager, the communication manager is connected to a plurality of power data transmission devices, the number of connectable power data transmission devices corresponds to the number of ports of the communication manager, and the remote host accesses the connected power data transmission devices through the communication manager.
9. The power data transmission system according to claim 7, wherein the remote host is connected to the plurality of power data transmission devices through a router/switch and is directly connected to a communication manager, and the communication manager is also connected to the plurality of power data transmission devices through the router/switch; the remote host can directly access the communication manager and the plurality of power data transmission devices through the router/switch, and the communication manager can access the plurality of power data transmission devices through the router/switch.
10. The power data transmission system of claim 7, wherein the remote host is connected to the plurality of power data transmission devices and the communication manager via a router/switch, the communication manager is also connected to the plurality of power data transmission devices via the router/switch, the remote host has direct access to the communication manager via the switch/router, the remote host has direct access to the power data transmission devices via the switch/router, and the communication manager has access to the power data transmission devices via the router/switch.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020564001.XU CN212588360U (en) | 2020-04-16 | 2020-04-16 | Power data transmission device and system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020564001.XU CN212588360U (en) | 2020-04-16 | 2020-04-16 | Power data transmission device and system |
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| CN212588360U true CN212588360U (en) | 2021-02-23 |
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