TWM445724U - Non-contact sensing reading device - Google Patents

Description

Non-contact induction reading device

The present invention relates to a reading device, and more particularly to a non-contact sensing device for reading radio frequency signals such as NFC or RFID.

With the advancement of wireless technology, radio frequency identification technology such as RFID (radio frequency identification) or NFC (Near field communication) has been widely used in many fields, such as warehouse management, logistics management, library management, automatic toll collection system. In many fields, such as medical management, the use of radio frequency technology can be seen. In radio frequency identification systems, radio frequency identification reading devices and electronic tags use wireless radio frequency signals for non-contact transmission between them. Object identification or data exchange purposes.

When the electronic tag receives the signal from the RFID reader, the identification data stored in the electronic tag is transmitted back to the RFID reader for identification; in the prior art, the RFID read The frequency generated by the device and the electronic tag often drifts, which causes a large variation in the signal transmitted by the RFID reader and the electronic tag, resulting in a gap between the conventional RFID reader and the electronic tag. The possibility of receiving a recognition error increases the probability of demodulation errors, thereby reducing the overall performance of the RFID system.

In view of the above-mentioned shortcomings, the main purpose of the present invention is to provide a non-contact inductive reading device, which adjusts the signal to the optimal state of matching with the transmission channel by the action of the modulated signal and through the action of encoding and decoding. So that the signal between the non-contact inductive reading device and the electronic tag can be correctly demodulated.

In order to achieve the above purpose, the present invention mainly provides a non-contact type sensing reading device, which mainly comprises a control unit, which is for receiving and transmitting signals, and the control unit is respectively Electrically connecting a connection interface, a coding unit, a reading module and a decoding unit, wherein the connection interface is for electrically connecting to a computer for receiving or transmitting signals to the computer, and the coding unit is Receiving a signal transmitted by the control unit, encoding the signal, and then transmitting the signal to the control unit, and the reading module electrically connected to the control unit is configured to receive and transmit the signal to the On the electronic card, and receiving or returning a signal to the control unit, the signal transmitted by the control unit is modulated, and the signal is converted from the base frequency to the high frequency signal and then transmitted, and finally, the decoding unit is The signal received by the control unit is received, and the signal is decoded and then transmitted back to the control unit, so that the signal can be read by the computer.

In this embodiment, the reading module further includes a radio frequency unit and an antenna, and the radio frequency unit is electrically connected to the antenna.

In this embodiment, the connection interface is a USB interface.

In another embodiment, the connection interface is one of a wireless wifi interface or a Bluetooth interface.

In order to make the above and other purposes, features and advantages of the present creation more obvious, DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the preferred embodiments will be described in detail with reference to the accompanying drawings.

Please refer to the first figure, which is a block diagram of the device structure of this creation. As shown in the figure, the non-contact sensing device 1 of the present invention is a non-contact device such as an NFC or RFID radio frequency signal, and the non-contact sensing device 1 mainly includes a control unit 11, and the control unit The control system 11 is electrically connected to a connection interface 12, an encoding unit 13, a reading module 14, and a signal receiving or transmitting signal according to different signals. a decoding unit 15, wherein the connection interface 12 is electrically connected to a computer 2 (as shown in the second figure) for receiving or transmitting signals to the computer 2, and the connection interface 12 can be a USB interface, or The wireless wifi, Bluetooth interface, etc. are electrically connected to the computer 2, and the encoding unit 13 receives the signal transmitted by the control unit 11, and encodes the signal, and then transmits the signal back to the control. The reading module 14 electrically connected to the control unit 11 is configured to receive and transmit signals to an electronic card 3 (as shown in the second figure), and receive or return signals to the control. Unit 11, the reading module 14 further includes a The frequency unit 141 and an antenna 142 are electrically connected to the antenna 142. The RF unit 141 is configured to modulate the signal transmitted by the control unit 11 to convert the signal from the fundamental frequency. After the high frequency signal is sent, the antenna 142 is sent; finally, the decoding unit 15 is configured to receive the signal transmitted by the control unit 11, and decode the signal, and then return the signal to the control unit 11, so that the signal can be For the computer 2 to read.

Please refer to the second figure, which is a schematic diagram of the operation of this creation. As shown in the figure, this creation The non-contact inductive reading device 1 is electrically connected to a computer 2 via the connection interface 12 (in this embodiment, a USB interface) for directly electrically connecting to the vending machine. a machine for making a small payment, such as a telephone or a washing machine, which transmits a message to the non-contact inductive reading device 1 at a certain time interval, after receiving the signal, the non-contact inductive reading device 1 The control unit 11 transmits its signal to the encoding unit 13 for encoding, so that the signal can be encoded to obtain the best efficiency during the transmission process, and the signal is protected from interference and collision; after the encoding operation is completed, the control unit 11 Sending the signal to the reading module 14, and then transmitting the signal from the RF unit 141 via the antenna 142; when any of the electronic cards 3 is close to the non-contact sensing device 1 to the preset range, The signal is received by the electronic card 3, and the electronic card 3 is received by one of the antennas 31 disposed therein, and then transmitted to the antenna 31 to be electrically connected to a control module 32, and the control module 32 The signal is demodulated, and the signal is restored to the serial digital information and sent to the address location. Finally, the control module 32 sends back a signal back to the non-contact sensing device 1 according to the requirements of the serial digital information. The signal of the postback is encoded and modulated, and then transmitted through the antenna 31, and then received by the reading module 14 via the antenna 142 to demodulate and recover the baseband signal, and the control unit 11 sends the signal to the decoding. The unit 15 decodes and sends it back to the computer 2, and according to the information of the electronic card 3, the computer 2 is interpreted to perform an operation or a deduction operation.

However, the embodiments described above are preferred embodiments. When the scope of the creation of the invention cannot be limited, the equivalent changes or modifications made in accordance with the scope of the patent application and the contents of the specification should belong to the following creations. The scope of patent coverage.

1‧‧‧ Non-contact inductive reading device

11‧‧‧Control unit

12‧‧‧Connection interface

13‧‧‧ coding unit

14‧‧‧Reading module

141‧‧‧RF unit

142‧‧‧Antenna

15‧‧‧Decoding unit

2‧‧‧ computer

3‧‧‧Electronic card

31‧‧‧Antenna

32‧‧‧Control Module

The first figure is a block diagram of the device structure of the creation.

The second picture is a schematic diagram of the operation of the creation.

1‧‧‧ Non-contact inductive reading device

11‧‧‧Control unit

12‧‧‧Connection interface

13‧‧‧ coding unit

14‧‧‧Reading module

141‧‧‧RF unit

142‧‧‧Antenna

15‧‧‧Decoding unit

Claims (4)

A non-contact inductive reading device for receiving an electronic card signal of a radio frequency, the device comprising: a control unit for receiving and transmitting signals, and controlling encoding or decoding according to different signals receiving and transmitting a coding unit electrically connected to the control unit for receiving a signal transmitted by the control unit for encoding; a reading module electrically connected to the control unit at an appropriate distance and The electronic card transmits and receives the signal to each other; a decoding unit is electrically connected to the control unit for receiving the signal transmitted by the control unit for decoding; and a connection interface is electrically connected to the control unit. Used to connect a computer for signal transmission. The non-contact inductive reading device of claim 1, wherein the connection interface is a USB interface. The non-contact inductive reading device of claim 1, wherein the connection interface is any one of a wireless wifi or a Bluetooth interface. The non-contact inductive reading device of claim 1, wherein the reading module further comprises a radio frequency unit and an antenna, and the radio frequency unit is electrically connected to the antenna.