KR200261410Y1 - RF ID Reader with display of id numbers - Google Patents

Abstract

The present invention relates to a wireless ID reading device for extracting and reading the state information stored in the wireless ID tag, and more specifically, to read the unique identification number stored in the wireless ID tag, and the corresponding wireless number according to the read identification number The present invention relates to a wireless ID reading apparatus for visually displaying a unique identification number of an ID tag.

The wireless ID reading apparatus of the present invention includes an antenna 10 for transmitting a radio frequency signal to a radio ID tag and receiving a radio frequency signal reflected from the radio ID tag, and a radio frequency through the antenna 10. Transmitting and receiving unit 20 for transmitting a signal and receiving a reflected radio frequency signal, a control unit 30 for modulating and reading data input from the transmitting and receiving unit 20, and control from the control unit 30 An output unit 40 for outputting unique identification information stored in the wireless ID tag as a 1 to 8 bit signal according to a signal, and uniqueness of the wireless ID tag identified according to a signal output from the output unit 40. And a display unit 50 for displaying the identification number.

Description

RF ID Reader with display of id numbers

The present invention relates to a wireless ID reading device for extracting and reading the state information stored in the wireless ID tag, and more specifically, to read the unique identification number stored in the wireless ID tag, and the corresponding wireless number according to the read identification number The present invention relates to a wireless ID reading apparatus for visually displaying a unique identification number of an ID tag.

Large-scale factories, such as steel mills, use their own motorized trolleys to move cargo such as raw materials, fuels, and finished products. The trolley loads the cargo and reaches a predetermined position by moving on the rail according to the command of the upper control unit installed in the central control center. The detection means for detecting the trolley movement is used.

Conventionally, a detection means such as a limit switch, a proximity sensor, a reed switch, and the like are used to detect the balance movement. However, the detection means as described above is accelerated further by the working environment as well as the normal deterioration caused by long time use. In other words, in steel mills, not only the generation of scattering dust during operation, but also the direct exposure of heat to the path through which the truck passes, the deterioration of the detection means is accelerated, and the detection sensitivity is lowered due to scattering dust. There is a problem that the accurate detection is not made, and even if an expensive detection device with specially enhanced heat resistance is used, the detection means must be replaced without continuing for an average of more than one year.

In order to solve this problem, a wirelessly operated ID tag and ID reading device are used. 1 is a schematic configuration diagram of a wireless ID tag 2 and a wireless ID reading device 4 conventionally used. The wireless ID tag 2 is operated by obtaining operating energy by an electromagnetic field directly from inside or outside. The inside of the wireless ID tag 2 has a circuit for recording the authentication number and data. In addition, the wireless ID reading device 4 has a transmission / reception circuit capable of giving or receiving a radio frequency signal toward the wireless ID tag 2. Typically, the wireless ID tag 2 and the wireless ID reading device 4 has an antenna 4 designed according to characteristics to transmit and receive radio frequency signals. The wireless ID tag 2 includes 'READ WRITE TAGS', 'WRITE ONCE READ MANY TAGS', and 'READ ONLY TAGS' according to a recording method, and at least one or more recordings are possible.

2 is a flowchart for explaining an operation state of the wireless ID tag 2 and the wireless ID reading device 4 having the above configuration. After the wireless ID reading device 4 starts to operate, when the wireless ID tag 2 approaches or interacts with the wireless ID tag 2 while releasing a radio frequency signal of 125 KHz, the antenna embedded in the wireless ID tag 2 is connected. The electromagnetic field is detected. After the sensed electromagnetic field is converted into energy of the wireless ID tag 2, the data stored in the wireless ID tag 2 is transmitted to the wireless ID reading apparatus 4 by this energy. The wireless ID reading apparatus 4 detects a radio frequency signal radiated from the wireless ID tag 2 and determines the corresponding contents.

However, the wireless ID tag 2 and the wireless ID reading device 4 used in a factory such as a conventional steel mill simply detect the existence of the wireless ID tag 2 and determine only the existence of the wireless ID tag 2. There was a problem outputting a signal. Therefore, when multiple radio ID tags 2 are used at the same time, there is a problem in that each radio ID tag 2 cannot be identified. This inconvenience is a factor that lowers the work efficiency in the workplace, such as steel mills that control a large number of bogies at the same time, causing a lot of difficulties in the control process.

The present invention has been made to solve the above problems, the purpose is to read the identification data stored in the wireless ID tag, and can visually display the unique identification number of the corresponding wireless ID tag in accordance with the read identification data The present invention provides a wireless ID reading device.

Another object of the present invention is to provide a wireless ID reading device that can be stably operated in a poor working environment and can be easily identified due to the centralized control of the truck.

1 is a schematic diagram of a wireless ID tag and a wireless ID reading device conventionally used;

2 is a flowchart illustrating an operation state of the wireless ID reading apparatus of FIG. 1;

3 is a block diagram of a wireless ID reading apparatus according to the present invention,

4 is an external perspective view of a wireless ID reading apparatus according to the present invention,

5 is a state of use of the wireless ID reading apparatus of the present invention,

Figure 6 is a flow chart of the operating state of the wireless ID reading apparatus of the present invention.

※ Explanation of symbols about main part of drawing ※

2: wireless ID tag 4,4a: wireless ID reader

6: antenna 10: antenna

12: case 20: transceiver

30: control unit 40: output unit

42: output terminal 50: display unit

60: bogie 62: wheel

64: rail

In the wireless ID reading device of the present invention for achieving the above object, in the wireless ID reading device for firing a radio frequency signal to read data stored in the radio ID tag, and receiving and reading the reflected radio frequency signal An antenna for transmitting a radio frequency signal to the radio ID tag and receiving a radio frequency signal reflected from the radio ID tag, and a radio frequency signal transmitted and reflected through the antenna. A transmission and reception unit for receiving a signal, a control unit for modulating and reading data input from the transmission and reception unit, and unique identification information stored in the wireless ID tag according to a control signal from the control unit as a 1 to 8 bit signal. An output for outputting and a signal output from the output Because it characterized by including a display unit for displaying a unique identification number of the wireless ID tag identification.

If described with reference to the accompanying drawings, the wireless ID reading device of the present invention having such features as follows.

3 is a view showing an embodiment of a wireless ID reading apparatus according to the present invention. As shown, an antenna 10 for emitting radio frequency signals to the radio ID tag 2 and for receiving radio frequency signals emitted from the radio ID tag 2 is provided. The antenna 10 is an antenna optimized for radio frequency signals emitted from the radio ID reader, for example, an antenna configured using a microstrip.

When the energy for operation is charged by the radio frequency signal emitted from the antenna 10, the radio frequency signal including the built-in unique identification number is transmitted from the radio ID tag 2 to the antenna of the radio ID tag 2 (not shown). Is fired through. The emitted radio frequency signal is received by the antenna 10 of the radio ID reader. As shown in the figure, the radio frequency signal emitted from the antenna 10 and the radio frequency signal received through the antenna 10 may be different signals, and the radio frequency signal emitted is a radio frequency signal of 125 kHz.

In this case, the radio frequency signal emitted through the antenna 10 is a high frequency signal containing a lot of energy and the signal emitted from the radio ID tag 2 can be set to be a pulse waveform, which is similar to the same as the prior art. . However, according to the present invention, the wireless ID tag 2 further includes each unique identification number. The unique identification number may be recorded once or changed and recorded several times. Since the wireless ID tag 2 has a high probability of being directly exposed to scattering dust or high heat, it is preferable to coat or wrap the cover using a ceramic material having enhanced heat resistance.

The transmission and reception unit 20 modulates and transmits a radio frequency signal through the antenna 10 when the operation is started, and receives the wireless ID tag 2 through the antenna 10. The radio frequency signal to be transmitted is modulated into a predetermined frequency signal by the transceiver 20 and output. The radio frequency signal output does not contain any information. On the other hand, the radio frequency signal received by the radio ID reader includes a unique identification number of the radio ID tag (2).

The radio frequency signal input through the transmitter / receiver 20 is input to the controller 30 so that the data content is read. The readings in the control unit 30 are unique identification numbers of the wireless ID tag 2 that exchanges radio frequency signals with the current wireless ID reading apparatus. When the unique identification number for the specific wireless ID tag 2 is read as described above, the controller 30 outputs a control signal for the read unique identification number.

The output unit 40 is for outputting the identification code of the wireless ID tag 2 in accordance with the control signal from the control unit 30. The output unit 40 is configured to simultaneously output signals of at least 1 bit to at most 8 bits. When up to eight output terminals a ₀ -a ₇ are connected, the output unit 40 can output a total of 256 different identification signals from 2 ⁰ to 2 ⁷ . This is an advantage of identifying and controlling a total of 256 trucks in the case of assigning each unique identification number of the wireless ID tag 2 attached to the truck used in the steel mill, for example.

Since the output unit 40 displays two states, that is, '0' and '1', the device can display two states, for example, a device such as a PNP, an NPN transistor, a relay, and an SCR. It can be configured using. When the controller 30 reads the unique identification numbers 1 to 256 of the wireless ID tag 2, the controller 30 outputs a binary signal to control the output unit 40 to output the corresponding number. For example, if the unique ID number read is 256, the output state is '11111111' and all output terminals are '1'.

Output terminals a ₀ -a ₇ connected to the output unit 40 are transmitted to an upper controller (not shown) through a data communication connector such as RS-232C or RS-422. The upper controller may grasp the position of the truck to which the wireless ID tag 2 is attached using the signal output as described above. Of course, it is obvious that more identification numbers can be assigned by increasing the number of output terminals.

The display unit 50 is also connected to the output unit 40. The display unit 50 is for visually displaying an identification number set in the wireless ID tag 2 according to a unique identification number output from the output unit 40. The display unit 50 can be configured using a display element such as an LED lamp, and it is particularly preferable to use one having excellent heat resistance. The unique identification number signal input to the display unit 50 is essentially the same signal as that transmitted to the upper controller. In other words, the output unit 40 simultaneously outputs the same signal to the upper control unit and the display unit 50.

Figure 4 is an external perspective view of the wireless ID reading apparatus of the present invention having the configuration as described above. As shown, it is installed in the case 12 having enhanced heat resistance, and it can be seen that the display elements of the antenna 10 and the display unit 50 are exposed on the front surface. In addition, the output terminal 42 for transmitting a signal output from the output unit 40 is provided on the side. RS232C and RS-422 connectors for data communication are connected to the output terminal 42 to transmit signals to the host controller.

The antenna 10 periodically emits a predetermined radio frequency signal when power is supplied to the radio ID reader 4, and radio frequency emitted from the radio ID tag 2 as the radio ID tag 2 approaches. Receive the signal. As the unique identification number of the received wireless ID tag 2 is displayed through the display unit 50, the operator can check the state of the vehicle.

The operation state of the wireless ID reading device 4a of the present invention will be described by interaction with the wireless ID tag 2 installed in the balance.

Referring to FIG. 5, it can be seen that the wireless ID tag 2 is installed on the upper surface of the bogie 60 that loads the cargo and moves along the rail 64. It is assumed that the wireless ID tag 2 includes a unique identification number of the truck on which it is installed. Reference numeral 62 is a wheel.

When the trolley 60 moves in accordance with the work order and approaches the wireless ID reading device 4a, the radio frequency reading device 4a generates the transmission and reception unit 20 of the wireless ID reading device 4a and emits the light through the antenna 10. The energy is charged in the wireless ID tag 2 to emit a radio frequency signal including the embedded information. The radio frequency signal emitted from the radio ID tag 2 is received by the transceiver 20 through the antenna 10 of the radio ID reader 4a. In the received signal, a unique identification number is read by the controller 30. The control unit 30 outputs the read unique identification number through the output unit 40.

As described above, the output unit 40 may output unique identification numbers for 256 trucks, and output the unique identification codes of the corresponding wireless ID tags 2 to the upper control unit and to the display unit 50 at the same time. . The display unit 50 outputs the unique identification number of the truck by the inputted unique identification signal. Therefore, the operator can identify the currently moved trolley, and also the upper control unit can identify the moving state of the balance, there is an advantage that can easily adjust the movement state control of the balance.

According to the present invention, the identification data stored in the wireless ID tag can be read, and the unique identification number of the corresponding wireless ID tag can be visually displayed according to the read identification data, and it can operate stably even in a harsh working environment. Since the balance can be identified, the centralized control of the balance is easy.

Claims (3)

A wireless ID reading apparatus for firing a radio frequency signal to read data stored in a radio ID tag, and receiving and reading the reflected radio frequency signal. The radio ID reader transmits a radio frequency signal to the radio ID tag and transmits a radio frequency signal through the antenna 10 to receive an radio frequency signal reflected from the radio ID tag. The transmitter / receiver 20 for receiving the reflected radio frequency signal, the controller 30 for modulating and reading the data input from the transceiver 20, and the control signal from the controller 30 Display the output unit 40 for outputting the unique identification information stored in the wireless ID tag as a 1 to 8 bit signal, and the unique identification number of the wireless ID tag identified according to the signal output from the output unit 40. Wireless identification device, characterized in that it comprises a display unit (50) for. The method of claim 1, The output unit 40 is configured to use any one of PNP, NPN transistor, relay, and SCR element operated in two states to output unique identification information as a 1 to 8 bit signal. Device. The method of claim 1, Wireless display device, characterized in that the display unit 50 is configured using an LED display element.