CN220342330U

CN220342330U - Arm technology-based modularized remote IO system supporting Profinet protocol

Info

Publication number: CN220342330U
Application number: CN202321658738.8U
Authority: CN
Inventors: 林健民; 黄金照; 胡亚伟; 江海帆; 管伟刚; 王澎勇
Original assignee: Guangdong Qiyuan Innovation Technology Co ltd
Current assignee: Guangdong Qiyuan Innovation Technology Co ltd
Priority date: 2023-06-28
Filing date: 2023-06-28
Publication date: 2024-01-12
Anticipated expiration: 2033-06-28

Abstract

The utility model discloses a modularized remote IO system supporting a Profinet protocol based on Arm technology, which comprises a main module and IO sub-modules connected with the main module, wherein the IO sub-modules collect field device signals and transmit the field device signals to the main module, the field device signals are transmitted to an external control system through a field bus interface/a real-time Ethernet interface connected with the main module, meanwhile, output signals of the control system are sequentially output to the field device through the main module and the IO sub-modules, and a high-speed communication chip is provided with a short-byte communication protocol through a high-frequency application processor, so that a shorter bus data exchange period is realized, and the data transmission period of the main module can be ensured to be less than 1ms when the main module expands more sub-modules, thereby meeting the IRT requirements.

Description

Arm technology-based modularized remote IO system supporting Profinet protocol

Technical Field

The utility model relates to the technical field of IO systems, in particular to a modularized remote IO system supporting a Profinet protocol based on the Arm technology.

Background

The remote IO module is an industrial-grade remote acquisition and control module, and the module provides the functions of switching value input acquisition, relay output, high-frequency counter and the like of the passive node.

The 3-wire/4-wire bus remote IO module generally uses a low-master-frequency processor, the number of sub-modules is large, the communication bandwidth is insufficient, the communication period is more than 1ms, and the parallel bus of some remote IO modules has larger area and can not well reduce the manufacturing cost.

Disclosure of Invention

This section is intended to outline some aspects of embodiments of the utility model and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description summary and in the title of the application, to avoid obscuring the purpose of this section, the description summary and the title of the utility model, which should not be used to limit the scope of the utility model.

In order to solve the technical problems, the inventor of the utility model realizes high-efficiency data interaction by using a high-speed communication PHY chip of a high-frequency application processor according to the problem that the communication period is slow caused by the increase of the number of sub-modules, and realizing higher 3-wire bus bandwidth, and is provided with a short byte communication protocol, the utility model provides the following technical scheme: the modularized remote IO system supporting the Profinet protocol based on the Arm technology comprises a main module and an IO submodule connected with the main module, wherein the IO submodule collects field device signals and transmits the field device signals to the main module, the field device signals are transmitted to an external control system through a field bus interface/a real-time Ethernet interface connected with the main module, and meanwhile, control system output signals are sequentially output to field devices through the main module and the IO submodule;

the main module comprises an application processor, an internal bus interface connected with the application processor, a power circuit, a power detection circuit and a crystal oscillator and reset circuit;

the internal bus interface comprises three serial-parallel mixed bus interfaces, is used for reducing the volume of the internal bus interface and carrying out data interaction on the IO submodule by the application processor, and also comprises a power supply line interface which is connected with a power supply circuit to supply power to the main module, wherein the power supply detection circuit is used for powering off the fault of the application processor, and the crystal oscillator and the reset circuit are basic clock circuits of the application processor.

The application processor is also connected with an LED indication module, and the LED indication module indicates the on-site input and output conditions.

Wherein, IO submodule includes:

the power supply circuit is connected with the application processor, the input acquisition circuit and the output driving circuit, the input acquisition circuit is connected with the application processor, external signals are acquired and transmitted to the application processor, the application processor is connected with the output driving circuit, the signals are amplified and drive the field device to operate, the application processor is further connected with an internal bus interface, the internal bus interface is connected with the main module through three paths of serial-parallel mixed bus interfaces for data exchange and is connected with the power supply circuit to supply power for elements in the IO sub-module, the application processor is further connected with a crystal oscillator and reset circuit/LED indicating module, the crystal oscillator and the reset circuit are basic clock circuits of the application processor, and the LED indicating module indicates the field input and output conditions.

The power supply circuit in the IO sub-module is connected with the DC-DC module in the main module.

The application processor adopts an ARM series processor and a PHY chip.

The three-path serial-parallel hybrid bus interface is formed by connecting one path in series and two paths in parallel.

Wherein, the master module adopts a Profinet/IRT communication protocol.

Wherein the IO submodule comprises a plurality of IO submodules.

The beneficial effects of the utility model are as follows:

(1) The high-speed communication chip of the high-frequency application processor is provided with a short byte communication protocol, so that a shorter bus data exchange period is realized, and the main module can ensure that the data transmission period is less than 1ms and meets the requirement of IRT when expanding more sub-modules.

(2) The interface structure is designed to be flatter and more compact, so that the length increment of the bus is shorter during expansion, and the communication quality is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:

FIG. 1 is a block diagram of a remote IO system in accordance with the present utility model.

Fig. 2 is a block diagram of the main module of the present utility model.

FIG. 3 is a block diagram of an IO sub-module of the present utility model.

Detailed Description

In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, but the present utility model may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present utility model is not limited to the specific embodiments disclosed below.

Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic can be included in at least one implementation of the utility model. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.

Example 1

Referring to fig. 1, in a first embodiment of the present utility model, the embodiment is a remote modular IO system supporting Profinet protocol based on Arm technology, which provides a main module and a plurality of IO sub-modules, where the main module and the IO sub-modules each include an internal bus interface, and perform data transmission between each other by inserting lines in the internal bus interface.

Specifically, the communication protocol of the main module mainly adopts a short byte communication protocol, such as IRT (isochronous real time) communication protocol in Profinet, so as to ensure that the communication response time is 1ms, and especially the communication response time is reduced to less than 1ms after the main module and the IO sub-module are matched.

Referring to fig. 2, the main module in the present utility model is composed of a fieldbus interface/real-time ethernet interface, a power circuit, an application processor, an internal bus interface, a power detection circuit, an LED indication module, a crystal oscillator and a reset circuit, where the fieldbus interface and the real-time ethernet interface are connected with the application processor in two directions, so that external data can be transmitted to the application processor, the application processor can also transmit operation data of the field device to an external control system through the fieldbus interface or the real-time ethernet interface, the internal bus interface is composed of 5 paths, three paths of communication and two paths of power supply, the two paths of power supply in the internal bus are connected with the power circuit, so that the power circuit supplies power to the application processor, the three paths of communication in the internal bus are connected in series and parallel, the node information on the application processor is detected and is powered off in the event of a fault, the LED indication module is connected with the application processor, so as to indicate the input and output conditions of the individual IO blocks, the field maintenance and the status indicator lamp or the LED clock signal can be judged as the basis of the power supply of the crystal oscillator and the reset circuit.

Specifically, the DC-DC module starts, the application processor starts, the initialization clock starts, the IO submodule starts, the LESD indication module displays, the system self-checking and the normal operation data exchange is carried out.

Referring to fig. 3, an IO sub-module in the present utility model is composed of a power supply circuit, an application processor, an input acquisition circuit, an output driving circuit, an internal bus interface, an LED indication module, a crystal oscillator and a reset circuit, wherein the input acquisition circuit is connected with the application processor, converts acquired field signals into data and enters the application processor, the output driving circuit is connected with the application processor, amplifies signals transmitted by the application processor and drives field devices to operate, the internal bus interface is composed of 5 paths, three paths of communication and two paths of power supply are connected with a DC-DC module in the main module, the power supply circuit in the internal bus is connected with the power supply circuit in the main module, so that the power supply circuit can supply power to the application processor, the three paths of communication in the internal bus are connected in series and two paths of communication, the serial and parallel connection interfaces are connected with the connection wiring circuit, a higher bandwidth under the same condition is obtained, the application processor can transmit the data to the main module through the bus, the LED indication module is connected with the application processor, the LED indication module is used for indicating the field input and output condition, and maintenance and the LED indication lamp and can directly observe whether the LED oscillator is in normal operation condition or not, and the crystal oscillator is in normal condition.

Specifically, the method comprises the following steps;

the input acquisition circuit converts the field signal, the application processor reads the conversion result, the LED input indication update and the data are sent to the main module through the internal bus interface, and accordingly the data are received.

The application processor receives the output signal through the internal bus, outputs the indication update of the LED, and sends the output data to the driving circuit and the driving circuit to drive the field device.

In addition, because the internal bus interface adopts a serial-parallel mixed interface, the shape and the wire harness style of the corresponding internal bus interface are changed, compared with the ET200 of Siemens, the bus interface is more simplified in terms of the parallel bus, and the same function can be achieved.

It should be noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present utility model may be modified or substituted without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered in the scope of the claims of the present utility model.

Claims

1. The utility model provides a remote IO system of modularization that supports Profinet protocol based on Arm technique which characterized in that: the system comprises a main module and an IO sub-module connected with the main module, wherein the IO sub-module collects field device signals and transmits the field device signals to the main module, the field device signals are transmitted to an external control system through a field bus interface/a real-time Ethernet interface connected with the main module, and meanwhile, control system output signals are sequentially output to the field device through the main module and the IO sub-module;

the internal bus interface comprises three bus interfaces which are mixed in series and parallel, and is used for reducing the volume of the internal bus interface and performing data interaction on the IO submodule by the application processor, the internal bus interface also comprises a power supply line interface which is connected with the power supply circuit to supply power to the main module, the power supply detection circuit is used for powering off the fault of the application processor, and the crystal oscillator and reset circuit is a basic clock circuit of the application processor.

2. The Arm technology-based modular remote IO system supporting the Profinet protocol of claim 1, wherein: the application processor is also connected with an LED indication module, and the LED indication module indicates the on-site input and output conditions.

3. The Arm technology-based modular remote IO system supporting Profinet protocol of claim 2, wherein: the IO submodule includes:

the power supply circuit is connected with the application processor, the input acquisition circuit and the output driving circuit, the input acquisition circuit is connected with the application processor and is used for acquiring and transmitting external signals to the application processor, the application processor is connected with the output driving circuit and is used for amplifying signals and driving field devices to operate, the application processor is further connected with an internal bus interface, the internal bus interface is connected with the main module through three serial-parallel mixed bus interfaces for data exchange and is connected with the power supply circuit to supply power for elements in the IO sub module, the application processor is further connected with a crystal oscillator and a reset circuit/LED indicating module, the crystal oscillator and the reset circuit is a basic clock circuit of the application processor, and the LED indicating module indicates the field input and output conditions.

4. The Arm technology-based modular remote IO system supporting Profinet protocol of claim 3, wherein: and the power supply circuit in the IO sub-module is connected with the DC-DC module in the main module.

5. The Arm technology-based modular remote IO system supporting the Profinet protocol of claim 4, wherein: the application processor adopts an ARM series processor and a PHY chip.

6. The Arm technology-based modular remote IO system supporting the Profinet protocol of claim 5, wherein: the three-path serial-parallel hybrid bus interface is formed by connecting one path in series and two paths in parallel.

7. The Arm technology-based modular remote IO system supporting the Profinet protocol of claim 6, wherein: the master module adopts a Profinet/IRT communication protocol.

8. The Arm technology-based modular remote IO system supporting Profinet protocol of claim 7, wherein: the IO submodule comprises a plurality of IO submodules.