CN111209984A - Real-time sensing method based on RFID (radio frequency identification) Internet of things manufacturing - Google Patents
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Abstract
The invention relates to a real-time perception method based on RFID (radio frequency identification) Internet of things manufacturing, which comprises the following steps: identifying assets needing to be managed in the automatic production workshop into instrument equipment classes and product classes; step two: numbering each type of assets in sequence, and writing the numbering value into the electronic tag; step three: ensuring that the asset information of each attached tag can be read by at least one slave RFID reader; step four: arranging a slave RFID reader-writer; step five: the workshop host sends all RFID signal information to the park server after decoding processing, and the park server positions, records and stores the received signal information in real time; the park server transmits the data to the intelligent terminal, and a manager monitors and manages park assets through the intelligent terminal. The invention realizes the real-time dynamic monitoring and management efficiency of the automatic production line on assets and products such as instruments and equipment.
Description
Technical Field
The invention belongs to the field of electronic engineering, and relates to a real-time sensing method based on RFID (radio frequency identification) Internet of things manufacturing.
Background
With the continuous development of science and technology, the internet of things has become a main research direction in the field of intelligent manufacturing. On the internet of things, each object can be connected with the internet by applying an electronic tag, and the specific position of each object can be found on the internet of things. The indoor positioning technology facing the area in the Internet of things comprises a cellular positioning technology, Wi-Fi, Bluetooth, infrared rays, an ultra wide band, RFID, ZigBee, ultrasonic waves and the like. Radio Frequency Identification (RFID) is a non-contact automatic Identification technology, which uses Radio Frequency to perform non-contact bidirectional communication to automatically identify a target object and obtain related data, and has the advantages of high precision, fast response, strong environment adaptability, strong anti-interference capability, convenient operation, and the like.
The most widely and mature automatic identification technology in the field of home and abroad automation at present uses bar code and two-dimensional code technology. Although bar codes and two-dimensional codes are used as a computer data acquisition means, the bar codes and the two-dimensional codes rapidly enter the fields of commodity circulation, automatic control, archive management and the like by virtue of the advantages of rapidness, accuracy, low cost and the like, the problem of being applied to an automatic production line is quite obvious, the bar codes or the two-dimensional codes cannot be automatically read (a scanning gun is held by a hand to scan the bar codes or the two-dimensional codes), the scanning gun and the codes need to be very close to each other in sensing distance, and the reliability is low due to the complex environment of a factory workshop, the bar codes or the two-dimensional codes are easy to damage, the surfaces are easy to be stained with dirt, the directionality of the labels is poor (phase requirements.
Disclosure of Invention
The technical problem solved by the invention is as follows: in order to overcome the defects of the prior art, a real-time sensing method based on RFID (radio frequency identification) internet of things manufacturing is provided, and the method is used for solving the problems of low identification precision and low identification response speed of assets such as instruments and equipment on a factory automation production line and products produced by the production line in the prior art.
The technical scheme of the invention is as follows:
a real-time sensing method based on RFID (radio frequency identification) Internet of things manufacturing comprises the following specific steps:
the method comprises the following steps: identifying assets needing to be managed in the automatic production workshop into instrument equipment classes and product classes;
step two: after identification, sequentially numbering each type of assets, writing a numbering value into an electronic tag, adhering the electronic tag with the written numbering value to each asset, and automatically collecting the position information of the asset, the information whether the asset is intact and the asset use state information by the electronic tag;
step three: arranging a master RFID reader-writer in the automatic production workshop, wherein the master RFID reader-writer is connected to a workshop host computer in an RS232 or RS485 or RS422 mode, and asset information of each attached label can be read by at least one slave RFID reader-writer;
step four: a slave RFID reader-writer is respectively arranged at the landing entrance of each floor of the workshop, the elevator room, the inner side of the door and the top of the gate entrance, the master RFID reader-writer reads and collects all RFID signals in a working area, and the master RFID reader-writer realizes the ad-hoc network communication between the master RFID reader-writer and all slave RFID reader-writers through the transmission of electromagnetic wave signals, so as to realize the transmission of asset data information;
step five: the workshop host sends all RFID signal information to the park server after decoding processing, and the park server positions, records and stores the received signal information in real time; the park server transmits the data to the intelligent terminal, and a manager monitors and manages park assets through the intelligent terminal.
Further, the administrator realizes that the monitoring management of the property of the garden through the intelligent terminal comprises:
when an administrator initiates an asset transfer application through the intelligent terminal, the park server passes the approval, the asset is pasted with the electronic tag, the RFID reader-writer identifies the asset electronic tag, the newly added asset information is sent to the workshop host, and finally the newly added asset information is sent to the park server, so that asset filing is completed;
when an administrator initiates an asset transfer application through the intelligent terminal, the park server passes the approval, removes the asset electronic tag or removes the asset, the RFID reader-writer cannot identify the asset electronic tag, sends unidentified asset information to the workshop host, and finally sends the unidentified asset information to the park server to finish asset marketing.
Further, the slave reader continuously receives all RFID data in the working area, and periodically compares the RFID data with an asset list stored in the slave reader, if the asset list is not consistent with the RFID signal periodically received, namely the assets in the working area are increased or decreased, self memory information is updated, and the workshop host sends corresponding asset change information to the park server through the local area network LAN/WLAN.
Further, when the assets are lost or loaned out, the information of the equipment is not recognized in real time from the reader-writer, the park server carries out early warning prompt and sends the early warning prompt to the intelligent terminal.
Further, the main RFID reader-writer is connected to the workshop host computer in an RS232 or RS485 or RS422 mode.
Furthermore, in the fourth step, the effective identification distance between the master RFID reader-writer and the slave RFID reader-writer and the assets is ensured to reach more than 30 meters.
Further, the transmission time in step four is not more than 100 ms.
Further, intelligent terminal realizes intelligent data management, includes: the method comprises the steps of filing and filing sales management, comprehensive classification statistics, data storage calling, data resolving analysis, and data query and deletion.
Compared with the prior art, the invention has the beneficial effects that:
(1) the invention adopts a non-contact information transmission mode, and the effective identification distance can reach more than 30 meters;
(2) the reading time is 10-100 ms, a plurality of labels can be identified at the same time, and the reading times are unlimited;
(3) the invention not only completes a series of related management from the introduction to the whole process of destroying, such as filing, checking, lending, returning, maintaining, scrapping, recording and statistical query, but also further realizes the real-time statistics of the asset states of all positions and the monitoring and management of historical movement tracks, can carry out safety alarm on the conditions of unauthorized movement and abnormal loss, and realizes the informatization, visualization, networking and intellectualization of asset management;
(4) the invention improves the efficiency, increases the management intensity of assets, facilitates the regular checking work of the instruments, improves the management efficiency of the instruments, effectively controls the use of the instruments and realizes the refinement, high efficiency and graded overall management of the instruments and the equipment.
Drawings
FIG. 1 is a system diagram of the present invention;
FIG. 2 is a block diagram of the system of the present invention;
FIG. 3 is a functional block diagram of the present invention for real-time sensing;
FIG. 4 is a flow chart of the present invention call management.
Detailed Description
The invention is further illustrated by the following examples.
A real-time sensing method based on RFID (radio frequency identification) Internet of things manufacturing is shown in figures 1 and 2 and comprises the following specific steps:
the method comprises the following steps: assets needing to be managed in the automatic production workshop are manually identified into instrument equipment and product;
step two: after manual identification, sequentially numbering each type of assets, writing a numbering value into an electronic tag, adhering the electronic tag with the written numbering value to each asset, and automatically collecting the position information of the asset, the information whether the asset is intact and the asset use state information by the electronic tag;
step three: arranging a master RFID reader-writer in the automatic production workshop, wherein the master RFID reader-writer is connected to a workshop host computer in an RS232 or RS485 or RS422 mode, and asset information of each attached label can be read by at least one slave RFID reader-writer;
step four: arranging a slave RFID reader-writer at each floor landing, elevator room, door inner side and gate top of a workshop respectively to ensure that the effective identification distance between the master RFID reader-writer and the asset and the slave RFID reader-writer and the asset is more than 30 meters, reading all RFID signals in a collection working area by the master RFID reader-writer, realizing self-networking communication between the master RFID reader-writer and all the slave RFID reader-writers through electromagnetic wave signal transmission, realizing transmission of asset data information, wherein the transmission time is not more than 100 ms;
step five: the workshop host sends all RFID signal information to the park server after decoding processing, and the park server positions, records and stores the received signal information in real time; the park server transmits the data to the intelligent terminal, and a manager monitors and manages park assets through the intelligent terminal.
The administrator realizes the monitoring management to the garden assets through the intelligent terminal and comprises the following steps:
as shown in fig. 4, when an administrator initiates an asset transfer application through the intelligent terminal, the campus server passes the approval, the asset is pasted with the electronic tag, the asset electronic tag is identified from the RFID reader, the newly added asset information is sent to the workshop host, and finally sent to the campus server, and asset profiling is completed;
when an administrator initiates an asset transfer application through the intelligent terminal, the park server passes the approval, removes the asset electronic tag or removes the asset, the RFID reader-writer cannot identify the asset electronic tag, sends unidentified asset information to the workshop host, and finally sends the unidentified asset information to the park server to finish asset marketing.
As shown in fig. 3, the administrator realizes intelligent data management through the intelligent terminal system, including: the method comprises the steps of file building/selling management, comprehensive classification statistics, data storage calling, data resolving analysis, and data query and deletion.
And the slave reader continuously receives all RFID data in the working area, periodically compares the RFID data with an asset list stored in the slave reader, if the asset list is not consistent with the RFID signal periodically received, namely the assets in the working area are increased or decreased, and updates the memory information of the slave reader, and the workshop host sends corresponding asset change information to the park server through the local area network LAN/WLAN.
When the assets are lost or loaned out, the information of the equipment is not recognized in real time by the reader-writer, the park server carries out early warning prompt and sends the early warning prompt to the intelligent terminal.
Example 1
The method comprises the following steps: a real-time positioning tracking module and a full life cycle management module. Wherein, real-time localization tracking module includes: electronic tags, RFID read write line, full life cycle management module includes: the system comprises a host, a server and various intelligent terminals, such as a notebook computer, a mobile phone, a pad and the like.
In a scientific research building in a factory, selecting a 7 x 28m2And (4) performing a positioning experiment in the area to monitor the real-time state. The reader-writer keeps receiving all RFID data in the working area, compares the RFID data with an asset list stored in the reader-writer regularly, and once the asset list is found to be inconsistent with the RFID signals received regularly, the reader-writer means that the assets in the working area are increased or decreased, namely corresponding asset change information is sent to the server through the local area network LAN/WLAN.
For example, when an AGV is moved out of the work area, the reader will find that the RFID signal of the asset cannot be received in the regular asset list query, the reader will update the storage list, delete the asset RFID data in the list, and notify the background system of the information that the asset leaves the work area through the local area network LAN/WLAN.
On the contrary, when a new device is added in the working area, the reader-writer finds that the asset RFID data which does not exist in the list is received in the regular asset list inquiry, after the reader-writer updates the storage list, the new asset RFID data is added in the list, and the asset enters the information notification server of the working area through the local area network LAN/WLAN.
When one instrument and meter device is lost or lent out and leaves the working area, and the reader-writer does not automatically recognize the information of the device within the designated time, the system can give an early warning prompt, and the anti-loss early warning function is effectively realized.
Because the positioning experiment area is indoors, the environment is relatively simple, and excessive obstacles do not exist. The four reference tags are respectively placed at the positions (0,0), (28,0), (0,7) and (28,7), the reader-writer is placed at the position (4,14.4), the tag to be positioned is placed at any position in the area, and then the positioning experiment is carried out. In the positioning area, six positioning experiments were performed at different positions in sequence, and the positioning results are shown in table 1.
TABLE 1
| Actual coordinate (m) | Test coordinate (m) | Error (m) |
| (7,3) | (8.79,4.27) | 2.19 |
| (13,2) | (11.89,9.24) | 1.45 |
| (16,5) | (14.37,3.86) | 1.99 |
| (19,4) | (21.27,5.16) | 2.55 |
| (21,3) | (23.24,4.02) | 2.46 |
| (25,5) | (24.17,6.84) | 2.61 |
The asset management system based on the RFID realizes the barrier-free object area positioning function, the delay time is less than 1 second, the data missing report rate is less than 0.1 percent, and the real-time performance, the accuracy and the reliability of the system completely achieve the effects of simple and rapid operation and good user experience.
The invention not only completes a series of related management from the introduction to the whole process of destroying, such as filing, checking, lending, returning, maintaining, scrapping, recording and statistical query, but also further realizes the real-time statistics of the asset states of all positions and the monitoring and management of historical movement tracks, can carry out safety alarm on the conditions of unauthorized movement and abnormal loss, and realizes the informatization, visualization, networking and intellectualization of asset management;
the invention improves the efficiency, increases the management intensity of assets, facilitates the regular checking work of the instruments, improves the management efficiency of the instruments, effectively controls the use of the instruments and realizes the refinement, high efficiency and graded overall management of the instruments and the equipment.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention, and those skilled in the art can make variations and modifications of the present invention without departing from the spirit and scope of the present invention by using the methods and technical contents disclosed above.
Claims (8)
1. A real-time sensing method based on RFID (radio frequency identification) Internet of things manufacturing is characterized by comprising the following specific steps:
the method comprises the following steps: identifying assets needing to be managed in the automatic production workshop into instrument equipment classes and product classes;
step two: after identification, sequentially numbering each type of assets, writing a numbering value into an electronic tag, adhering the electronic tag with the written numbering value to each asset, and automatically collecting the position information of the asset, the information whether the asset is intact and the asset use state information by the electronic tag;
step three: arranging a master RFID reader-writer in an automatic production workshop, wherein the master RFID reader-writer is connected to a workshop host computer to ensure that the asset information of each attached label can be read by at least one slave RFID reader-writer;
step four: a slave RFID reader-writer is respectively arranged at the landing entrance of each floor of the workshop, the elevator room, the inner side of the door and the top of the gate entrance, the master RFID reader-writer reads and collects all RFID signals in a working area, and the master RFID reader-writer realizes the ad-hoc network communication between the master RFID reader-writer and all slave RFID reader-writers through the transmission of electromagnetic wave signals, so as to realize the transmission of asset data information;
step five: the workshop host sends all RFID signal information to the park server after decoding processing, and the park server positions, records and stores the received signal information in real time; the park server transmits the data to the intelligent terminal, and a manager monitors and manages park assets through the intelligent terminal.
2. The real-time perception method based on RFID (radio frequency identification) internet of things manufacturing according to claim 1, wherein an administrator realizes monitoring management of property of a park through an intelligent terminal, and the method comprises the following steps:
when an administrator initiates an asset transfer application through the intelligent terminal, the park server passes the approval, the asset is pasted with the electronic tag, the RFID reader-writer identifies the asset electronic tag, the newly added asset information is sent to the workshop host, and finally the newly added asset information is sent to the park server, so that asset filing is completed;
when an administrator initiates an asset transfer application through the intelligent terminal, the park server passes the approval, removes the asset electronic tag or removes the asset, the RFID reader-writer cannot identify the asset electronic tag, sends unidentified asset information to the workshop host, and finally sends the unidentified asset information to the park server to finish asset marketing.
3. The real-time sensing method based on RFID internet of things manufacturing of claim 1, wherein all RFID data in a working area are continuously received from a reader-writer and periodically compared with an asset list stored in the reader-writer, if the asset list is not consistent with RFID signals received periodically, the assets in the working area are increased or decreased, the memory information of the work area is updated, and a workshop host sends corresponding asset change information to a park server through a Local Area Network (LAN)/Wireless Local Area Network (WLAN).
4. The real-time sensing method based on the RFID internet of things manufacturing as claimed in claim 1, wherein when the asset is lost or loaned, the information of the device is not recognized in real time from the reader-writer, the campus server performs an early warning prompt and sends the early warning prompt to the intelligent terminal.
5. The real-time sensing method based on RFID internet of things manufacturing of claim 1, wherein the main RFID reader is connected to the workshop host computer through RS232 or RS485 or RS 422.
6. The real-time sensing method based on RFID internet of things manufacturing of claim 1, wherein in the fourth step, the effective identification distance between the master and slave RFID readers and the assets is guaranteed to be more than 30 meters.
7. The real-time sensing method based on RFID internet of things manufacturing of claim 1, wherein the transmission time in step four is not more than 100 ms.
8. The real-time perception method based on RFID internet of things manufacturing of claim 1, wherein an intelligent terminal achieves intelligent data management and comprises: the method comprises the steps of filing and filing sales management, comprehensive classification statistics, data storage calling, data resolving analysis, and data query and deletion.
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