Application Of Electronic Tags At Quarries

- May 17, 2018-

First, electronic label instructions

RFID (Radio Frequency IDentification) technology, also known as RFID (Radio Frequency IDentification) technology, is a communication technology that can identify specific targets and read and write related data through radio signals without identifying the mechanism between the system and a specific target. Or optical contact.

As electronic tagging technology continues to mature, it is increasingly used in real production and life. Such as: libraries, access control systems, food safety traceability, etc.

The electronic tag is a non-contact automatic identification technology. It automatically recognizes and obtains relevant data through radio frequency signals. The recognition work requires no manual intervention. Compared with quickly and accurately identifying the bar code of the tracking target object, the advantages of the electronic tag are as follows:

1) Data can be read through external materials (no visibility requirements);

2) Waterproof, anti-magnetic and high-temperature resistant, it can work in poor working environment, with long service life;

3) Can be embedded or attached to different types of products;

4) The range of reading distance has been improved, there is no need to scan in line;

5) The time to write data is small, and the amount of stored information is large;

6) Efficient anti-counterfeiting

7) At the same time can read multiple cards, and can read the information on the label in motion;

8) It is ultra-thin and multi-size, it can be packaged in paper, plastic products (PVC, PET), can be applied to different occasions, and can also be laminated cards. Proponents of RF ID believe that this technology is closely linked with the electronic supply chain and is expected to replace bar code scanning technology in the next few years.

Second, the characteristics of electronic tags:

1. High anti-counterfeiting technology: The data in the electronic tag can reach up to 240 bits, which are mainly divided into Resever Bank data area, EPC Bank data area, TID Bank data area and User Bank data area Resever Bank card reading password 32bits bit data, used to set Electronic tags can read and write passwords.

EPC Bank 96bits bit data, readable and writable.

TID Bank 64bits bit data, factory unique ID

User Bank 512 bits data, user data area, readable and writable.

Since the unique ID of the TID Bank is irreversible, there is actually a layer of hardware anti-counterfeiting, plus the secret code and EPC data can be said to be very high.

2, small size: can be packaged into the business card size of the card, and a variety of special-shaped cards, so it is very hard and not easy to damage.

3, easy to read and write: We use ultra-high frequency (900MHz) electronic tags, the communication speed is high, read a single tag memory EEPROM data average reading time per 32bits minimum of about 1.4ms; writes, the average time per 32bits minimum 30ms. Reading distance up to 10 meters. The memory can be erased more than 100,000 times. Multiple tags can be identified at the same time.

Third, the quarry plant electronic label application profile

The application program of quarrying electronic label consists of four parts: stone information collection, weight information of vehicle in and out, stone identification information from the factory, terminal computer management.

Stone information collection

Information on the production of stone materials such as: length, width, height and weight of stone materials is written into the electronic tag through a mobile electronic tag reader/writer, and user information of the stone materials can also be stored in the tag as required. And the electronic tag is fixed on the stone. All the stone information is stored in the computer through the wireless network and the terminal computer.

Weight information for vehicle access

Install electronic tags on vehicles that carry stones so that we can write weight information and vehicle information when the vehicles enter and exit into electronic tags. It is possible to automatically calculate the daily stone output and the working conditions of the vehicle through the difference in the vehicle's incoming and outgoing weights.

Stone identification information from the factory

Since the stone is equipped with an electronic tag, we can know whether the stone on the vehicle meets the factory's requirements by checking the electronic tag reader at the factory when the stone is shipped from the factory. For example: whether there is extra stone, if there is less stone, if there is wrong stone. When all the conditions meet the factory requirements, the access control system opens the door and returns the factory stone information to the terminal computer. These jobs can be completed in an instant and reduce a lot of labor costs.

4, terminal management computer

The terminal management computer is the core of the application. It comprehensively processes all data and issues corresponding operating instructions.

Including: all stone information, stone user information, stone factory information and so on. Users can always know the current status of each piece of stone. Through the application of the electronic label system, the management of stone materials can be greatly improved and the management cost can be saved.

Fourth, the quarry factory electronic label application program

RFID composition and working principle

System composition:

The system is divided into three parts:

(1) Tag The tag corresponds to the bar code symbol in the bar code technology and is used to store information that needs to identify the transmission.

(2) The Reader differs from the completed function depending on the type of supported tag, and the reader's complexity is significantly different. The basic function of the reader is to provide the means for data transmission with the tag. In addition, the reader also provides quite complex signal state control, parity error checking and correction functions.

(3) Antenna The Antenna is a transmitting and receiving device for transmitting data between a tag and a reader.

1, working principle:

RFID technology is a technology that uses radio frequency signals to achieve contactless information transmission through spatial coupling (alternating magnetic field or electromagnetic field) and achieves automatic identification through the transmitted information. The working principle is: using the radio frequency signal and spatial coupling transmission characteristics to realize the automatic recognition of the recognized object.

work process:

When an item with an electronic tag is within the read-write range of the reader, the reader emits a magnetic field. The query signal activates the tag. The tag requests a reflected signal according to the received inquiry signal. The reader receives the tag and reflects it back. After the signal is read, the electronic data stored in the electronic tag is read and recognized contactlessly by the decoding process of the internal circuit so as to achieve the purpose of automatically recognizing the object. Then, through computer and computer network, the management functions such as collection, processing and remote transmission of object identification information are realized.

2, the status of quarry

At present, the management of quarrying plants mainly uses manual recording methods to manage the stone materials. This kind of work method is inefficient, and the staff has a large amount of labor. It is very easy to make mistakes. When the staff changes, it is very cumbersome for the library. Finding customers' stones at the time of delivery is more tedious and error-prone. This not only wastes time but also adds a lot of costs.

3, structural design and working process

(1) Structural design Considering the production, inventory, and transportation links of the quarry, we need to install a number of RFID readers and communicate them with data center computers via communication lines or wireless networks. exchange. At the same time, each piece of stone should be equipped with an electronic tag (RFID), and the electronic tag of each piece of stone should be entered into the data. The specific working model is shown in Figure 1.

As can be seen from Figure 1, in the working process of the RFID system, always based on energy, through a certain sequence of time to achieve data exchange. The reader provides working energy to the electronic tag. When the electronic tag enters the RFID field, the radio frequency wave emitted by the reader/writer activates the tag circuit and interacts to complete the data exchange. For the simultaneous reading of multiple tags, the reader can be used as a first-in-first-out or tag-first form. In order to realize simultaneous reading of multiple labels without conflict, the reader first issues isolation commands to a batch of labels, so that multiple electronic labels within the reading range of the reader are isolated, and only one label is left in the active state and the reader is established. Conflict-free communication links. For the way of labeling first, the label randomly sends its own identification ID repeatedly. Different labels can be correctly read by the reader at different time periods, and simultaneous reading of multiple labels can be completed. For any electronic tag, it has a unique ID number. In most applications, the back-end database is used to support the tag's data attributes. The interface between the reader and the application system is represented by a standard function called by the development tool. The functions generally include the following aspects: The application system issues configuration commands and other instructions to the reader/writer as needed; the reader/writer returns its current configuration status and various instruction execution results to the application system.

(2) Work process

When the stone production is completed, the RFID must be installed on the stone. The chip contains a unique identification code and relevant information of the stone. They can be contactless by the reader at a certain distance. Read it out. The dynamic monitoring system based on radio frequency identification technology can simultaneously perform non-contact, high-speed and accurate parallel tracking and identification of multiple target objects with electronic tags within a certain range. Therefore, as long as the stone passes through the reader-writer installed Automatically read the lD number of all stone electronic tags, then the system will send the lD number and stone related information of this tag to the background system for processing.

4, feasibility analysis

After the previous introduction, it can be demonstrated that the digitized and scientific management of stone materials can be completely realized. At the same time, RFID production costs are lower and investment is less. Therefore, the stone material electronic label application program is feasible.

5, the overall design of RFID technology in the quarry

(1) Functional design

The basic functions of RFID technology in stone management include:

(1) The input of basic information of stone material includes: length, width, height, weight, etc. of stone material.

(2) Stone management information includes: production date, customer information, and shipment information.

(3) Stone factory management includes: date of shipment, shipping address, customer, and delivery quantity.

(4) Management of transport vehicles: The weight of vehicles entering and leaving the factory can be recorded for management.

(2) Design plan

We can install RFID readers at the entrance and exit of stone materials, and install RFID readers at the gates. When the stone material enters the warehouse, the information of the stone material is automatically transmitted to the management computer through an RFID reader. The computer will automatically store the stone material for storage. When the stone material is out of the warehouse, the RFID reader can write the shipping information and delivery place of the delivery stone into the electronic tag, and at the same time, manage the computer to carry out the inventory registration. When the stone material is loaded into the factory door, the RFID reader installed at the factory door will read the information of the electronic tag on the stone material and judge whether it meets the outbound and factory requirements. If the factory requirements are met, the factory door rod will automatically open. At the same time, you can export the arrival location of the stone.

When an empty transportation vehicle enters the factory, we can store the vehicle information on the loadometer (including: the vehicle's weight and vehicle number) in the vehicle's electronic tag. The information input can be a hand-held RFID reader or a fixed RFID. Writer mode writes information back to the management computer for archiving and management via the management network. When the vehicle leaves the factory, the weight of the vehicle's electronic tag on the loadometer is compared to the weight in the RFID tag, and the weight difference when the vehicle enters the factory is returned to the management computer for archiving and management. We can connect through the serial port of the management computer and the serial port output of the weighbridge to achieve automatic weight recording.

(3) The system is completed

The management computer center is the core of the entire system and consists of a database system and a responsive application software system. The system can complete the management of stone material information, the management of stone materials out of storage, the management of customer demand for stone materials, and the management of transport vehicles into the factory. Such as: You can inquire about the day of stone production and shipping of stone materials.