CN113259422A - Intelligent sensing device based on TSN network standard - Google Patents
Intelligent sensing device based on TSN network standard Download PDFInfo
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- CN113259422A CN113259422A CN202110456196.5A CN202110456196A CN113259422A CN 113259422 A CN113259422 A CN 113259422A CN 202110456196 A CN202110456196 A CN 202110456196A CN 113259422 A CN113259422 A CN 113259422A
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Abstract
The invention relates to an intelligent sensing device based on TSN network standard, which comprises a plurality of sensor units, a plurality of signal processing units and a plurality of signal processing units, wherein the sensor units are respectively used for receiving analog quantity; an ADC module for converting an analog quantity received from the sensor unit into a digital signal; the sampling data preprocessing module is used for collecting the digital data from the ADC module or the digital data through a serial port interface, and preprocessing the data such as filtering and the like aiming at the collected data; the control unit module can perform real-time control operation, data processing and storage, communication buffering and self diagnosis; based on a TSN (time sensitive network), the intelligent sensing device can be widely used for simultaneously acquiring physical quantity information of a plurality of signal sources at high speed in real time and transmitting the physical quantity information to an upper information processing system. The invention can be applied to equipment in wide fields such as industrial fields and the like, and can assist the application of industrial Internet in the manufacturing industry and intelligent manufacturing.
Description
Technical Field
The invention relates to an intelligent sensing device based on a TSN (transmission time network) standard.
Background
The existing sensors:
the sensor is a detecting device which can sense the physical quantity to be measured and convert the sensed physical quantity into an electric signal or other information in a required form according to a certain rule for output so as to meet the requirements of information transmission, processing, storage, display, recording, control and the like. The application of sensors in fields such as industrial production, space development, marine exploration, environmental protection, resource investigation, medical diagnosis, bioengineering, and even cultural relic protection is an indispensable existence in modern society. In recent years, with the continuous expansion of application scenes and the improvement of specifications for coping with demands, the development of miniaturization, multi-functionalization, digitization, intelligence, systematization and networking is accelerated in the structural and functional aspects of the sensor based on the improvement of the original signal conversion performance of the sensor in the following modes.
The second sensor is a solid-state sensor composed of solid elements such as semiconductors, dielectrics, and magnetic materials, in most cases, from the conventional structure-type sensor which senses and converts a signal by using a change in a structural parameter.
With the development of miniaturization, multi-functionalization and digitization of the sensor, the sensor also has an original function of converting a simple physical quantity (namely a signal) in the structural aspect, and a hardware processing part for preprocessing the signal, storing information, processing data, more complicated data communication and the like and a corresponding module for processing software and the like are added.
Recently, driven by the expansion of internet technology in various fields, the communication interface of sensor data becomes a function responsible for information output, and becomes an increasingly important component in the development process of the sensor towards multifunction, digitalization, intellectualization, systematization and networking.
2. The problems existing in the prior art are as follows:
in order to meet the development requirements of multi-functionalization, digitization, intellectualization, systematization and networking, the technical problems of the existing sensors are mainly reflected in the following aspects:
the communication technology with high density, real-time performance and high reliability is realized under the scenes of mixed new and old equipment and severe electromagnetic environment.
Although the existing general communication interfaces such as RS232, RS485, RS422 and the like and the communication standards thereof can be applied to some long-term devices, the communication protocols thereof cannot meet high-density and real-time communication such as less than 1ms, and the reliability of the communication cannot be guaranteed in the manufacturing industry due to the influences of large current, high electromagnetic noise, long distance between devices and the like.
And secondly, the technical problem of synchronous coordination of data acquisition of sensors from different signal sources under a highly integrated system.
The application of the sensor in the manufacturing industry is not only various, but also the adopted quantity is huge, in recent years, the promotion of technologies such as industrial internet in the manufacturing industry promotes the networking requirement of manufacturing equipment, simultaneously, the complexity of the system is increased due to the increase of the intelligentization degree, and the development is towards a highly integrated system. The current sensors with general communication interfaces such as RS232, RS485, RS422 and the like have certain communication capability, but have no specific implementation capability in terms of data acquisition of the sensors from different signal sources and data synchronization and coordination requirements.
And thirdly, the technical problems of incapability of correlating acquired data and data isolated island caused by sensors with different communication standards.
Aiming at the communication requirements of high real-time performance and high reliability, relatively recent CANopen, Modbus, PROFIBUS and CC-Link modify or add some specific protocols on the basis of standard Ethernet to ensure real-time performance and certainty, and non-standard Ethernet thereof causes the communication protocols to be not communicated with each other, data cannot be effectively used, meanwhile, the coordination problem of different data acquisition in the system is difficult to solve, and the communication protocol has defects in usability, interoperability, bandwidth and equipment cost investment.
And fourthly, the technical problems of variability and high degree of freedom of data processing and communication under different scenes are solved.
In recent years, although sensors have realized output of analog quantity data information from the beginning, to digital quantity signals in current digital conversion. However, it is impossible to freely define the data implementation data architecture and data amount of the data transmitted by the bidirectional communication mode. In such application scenarios, it is expected that the sensor itself is required to optimize the output data architecture and content in order to realize high-density, high-precision, and efficient signal processing and data transmission under different scenarios by the demand of the upper system in the future.
Self-diagnosis of sensor.
With the development of the sensors toward the direction of intelligence, the state detection and self-diagnosis functions of the sensors themselves are also one of the important items. Most of the existing sensors do not have the functions, only a small part of the existing sensors have the functions, and the common method is to add another sensor to monitor the state of a target sensor, fail to realize the self-state diagnosis of the sensor, and really integrate the self-state diagnosis with a digital quantity signal to realize the real-time self-diagnosis function of the sensor.
Disclosure of Invention
The invention aims to provide an intelligent sensing device based on a TSN (transmission time network) standard.
In order to solve the technical problems, the invention adopts the following technical scheme: an intelligent sensing device based on TSN network standard, which comprises:
the sensor units are used for receiving analog quantities respectively;
an ADC module for converting an analog quantity received from the sensor unit into a digital signal;
the sampling data preprocessing module is used for collecting the digital data from the ADC module or the digital data through a serial port interface, and preprocessing the data such as filtering and the like aiming at the collected data;
the control unit module can perform real-time control operation, data processing and storage, communication buffering and self diagnosis;
the display module displays the state indication of the control unit module;
the network port module is used for realizing interaction between the control unit module and the upper computer;
and the power supply module is used for supplying power to the sensor unit, the ADC module, the sampling data preprocessing module, the control unit module, the display module and the network port module.
Optimally, the control unit module comprises a data sampling control and sampling data processing module with a sampling data preprocessing module aiming at lower bits; and performing communication data packet aiming at the processed sampling data, and realizing data communication with a higher-level network module according to the TSN standard communication technology.
And optimally, the control unit module receives data sampling from the upper network port module and control instructions of all action modules.
Preferably, the control unit module collects the state data of the sensor module and transmits the self-diagnosis of the sensor module in real time through the upper network port module and the TSN standard communication technology.
Optimally, the network module adopts a 1000M RMI Ethernet mode to realize compatibility with other networks.
The invention has the beneficial effects that: based on a TSN (time sensitive network), the intelligent sensing device can be widely used for simultaneously acquiring physical quantity information of a plurality of signal sources at high speed in real time and transmitting the physical quantity information to an upper information processing system. The invention can be applied to equipment in wide fields such as industrial fields and the like, and can assist the application of industrial Internet in the manufacturing industry and intelligent manufacturing.
The intelligent sensing device can continuously keep the basic function of high-reliability data transmission due to high density, real-time property and severe electromagnetic environment, can be applied to data acquisition of higher specifications such as current, voltage, torque and the like, wider range and more scenes in industrial manufacturing equipment such as less than 1ms and the like, and is favorable for more accurate state control and fine control.
The intelligent sensing device can be used for synchronously coordinating the data acquisition of the sensors from different signal sources in the same system, so that the complex phenomenon analysis and control processing aiming at various interactions can be completed by a system with a smaller unit.
The intelligent sensing device of the invention can solve the technical problems that the data collected by the sensor cannot be correlated and isolated in data due to different ages and different communication standards in the same system, and can realize the digital reconstruction of equipment and the like and the realization of subsequent intelligent manufacturing with minimum investment.
Through the additional functions of data transmission optimization, real-time self-diagnosis and the like in the intelligent sensing device, the possibility of using the same sensor in different scenes can be improved, the performance of the sensor can be exerted to the maximum extent, and an effective means is provided for the reliability of the whole system.
Drawings
FIG. 1 is an integrated basic architecture for implementing sensor data sampling, data preprocessing and TSN network standard-based;
FIG. 2 is a functional and basic software/hardware architecture of a core control unit module;
FIG. 3 is a schematic diagram of a connection structure of an intelligent sensor applied to the main shaft loads of 4 numerical control machines;
FIG. 4 shows that the error of the data samples of the spindle loads of 4 channels in the 1ms period is stable and less than 35 ns;
fig. 5 is a view for monitoring a cutting state of a spindle tool through a variation analysis of spindle load sampling data of a numerically controlled machine tool in real time at 1 ms.
Detailed Description
The invention is described in detail below with reference to embodiments shown in the drawings to which:
the intelligent sensing device based on TSN network standard, it includes:
the sensor units are used for receiving analog quantities respectively;
an ADC module for converting an analog quantity received from the sensor unit into a digital signal;
the sampling data preprocessing module is used for collecting the digital data from the ADC module or the digital data through a serial port interface, and preprocessing the data such as filtering and the like aiming at the collected data;
the control unit module can perform real-time control operation, data processing and storage, communication buffering and self diagnosis; the control unit module comprises a data sampling control and sampling data processing module with a sampling data preprocessing module aiming at lower bits; and performing communication data packet aiming at the processed sampling data, and realizing data communication with a higher-level network module according to the TSN standard communication technology. The system receives data sampling from an upper network port module and control instructions of each action module. The method comprises the steps of collecting state data of a sensor module, and transmitting self-diagnosis of the sensor module in real time through an upper network port module and a TSN standard communication technology;
the display module displays the state indication of the control unit module;
the network interface module is used for realizing the interaction between the control unit module and an upper computer, and the network module adopts a 1000M RMI Ethernet mode to realize the compatibility with other networks;
and the power supply module is used for supplying power to the sensor unit, the ADC module, the sampling data preprocessing module, the control unit module, the display module and the network port module.
In fig. 3, the application of the intelligent sensor of the present invention to tool data acquisition and subsequent diagnosis of a numerically controlled machine tool is shown.
The intelligent sensor with 4 Hall currents is used for sampling data from 4 numerical control machine tool devices respectively and transmitting the data to an external network (system) in a period of 1 ms. In the overall system test, the system was tested,
1. only one intelligent sensor is used, and real-time high-speed acquisition and transmission of data of 4 independent numerical control machine tool spindles are realized;
2. framing the acquired data according to the custom data frame, wherein the byte capacity of each transmission is 1400;
3.4 strict time synchronization of data between groups of sensors;
4. in the experiment of more than ten million times of communication, the error stability in the sampling period of 1ms is less than 35 nanoseconds (figure 4);
5. based on the high-speed data acquisition of the intelligent sensor, the load monitoring of the spindle with the rotating speed up to 20000rpm can be completed, and necessary real-time and accurate data support is brought for completing subsequent data analysis and tool diagnosis application (figure 5).
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes or modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (5)
1. An intelligent sensing device based on TSN network standard is characterized in that the intelligent sensing device comprises:
the sensor units are used for receiving analog quantities respectively;
an ADC module for converting an analog quantity received from the sensor unit into a digital signal;
the sampling data preprocessing module is used for collecting the digital data from the ADC module or the digital data through a serial port interface, and preprocessing the data such as filtering and the like aiming at the collected data;
the control unit module can perform real-time control operation, data processing and storage, communication buffering and self diagnosis;
the display module displays the state indication of the control unit module;
the network port module is used for realizing interaction between the control unit module and the upper computer;
and the power supply module is used for supplying power to the sensor unit, the ADC module, the sampling data preprocessing module, the control unit module, the display module and the network port module.
2. The intelligent sensing device based on the TSN network standard of claim 1, wherein: the control unit module comprises a data sampling control and sampling data processing module with a sampling data preprocessing module aiming at lower bits; and performing communication data packet aiming at the processed sampling data, and realizing data communication with a higher-level network module according to the TSN standard communication technology.
3. The intelligent sensing device based on the TSN network standard of claim 1, wherein: and the control unit module receives data sampling from the upper network port module and control instructions of all action modules.
4. The intelligent sensing device based on the TSN network standard of claim 1, wherein: the control unit module collects the state data of the sensor module and transmits the self-diagnosis of the sensor module in real time through the upper network port module and the TSN standard communication technology.
5. The intelligent sensing device based on the TSN network standard of claim 1, wherein: the network module adopts 1000M RMII Ethernet mode to realize compatibility with other networks.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102494717A (en) * | 2011-11-25 | 2012-06-13 | 长沙理工大学 | Engineering machinery fault diagnosis system based on sensor data wireless transmission |
| CN106840714A (en) * | 2016-12-21 | 2017-06-13 | 吴中区穹窿山倪源交通器材经营部 | A kind of intelligent failure diagnosis method for high ferro |
| CN208172635U (en) * | 2018-05-16 | 2018-11-30 | 山东耀汇三维软件有限公司 | Intelligent automation silo system |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102494717A (en) * | 2011-11-25 | 2012-06-13 | 长沙理工大学 | Engineering machinery fault diagnosis system based on sensor data wireless transmission |
| CN106840714A (en) * | 2016-12-21 | 2017-06-13 | 吴中区穹窿山倪源交通器材经营部 | A kind of intelligent failure diagnosis method for high ferro |
| CN208172635U (en) * | 2018-05-16 | 2018-11-30 | 山东耀汇三维软件有限公司 | Intelligent automation silo system |
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