CN208477532U

CN208477532U - Multiple antennas RFID circuit and multiple antennas RFID reader

Info

Publication number: CN208477532U
Application number: CN201820598949.XU
Authority: CN
Inventors: 周立功; 赵金生
Original assignee: GUANGZHOU ZHOULIGONG SCM TECHNOLOGY CO LTD
Current assignee: Guangzhou Zhiyuan Electronics Co Ltd
Priority date: 2018-04-25
Filing date: 2018-04-25
Publication date: 2019-02-05
Anticipated expiration: 2028-04-25

Abstract

The utility model relates to a kind of multiple antennas RFID circuit and multiple antennas RFID readers, including electronic switch, control module, RFID read-write module and one or more Anneta modules.Control module is successively connect with each output end by the input terminal of control electronic switch, it connect the card reading information output of RFID read-write module successively with Anneta module, it realizes the carry mutiple antennas module in same RFID read-write module, reduces the volume and cost of multiple antennas RFID circuit.Meanwhile positive supply is connected by the power end in electronic switch, another power end connects negative supply, reduces the loss of signal in multiple antennas RFID circuit, guarantees the correct transmission of signal.

Description

Multiple antennas RFID circuit and multiple antennas RFID reader

Technical field

The utility model relates to radio RF recognition technology fields, more particularly to a kind of multiple antennas RFID circuit and more days Line RFID reader.

Background technique

Radio RF recognition technology is a kind of wireless communication technique, and specific objective can be identified by radio signals and is read Related data is write, without establishing mechanical or optical contact between identifying system and specific objective.RFID technique can recognize height Fast moving object and the data that can identify multiple labels simultaneously, and RFID antenna is the transmitting for being used for transmission label data, receives Device.

In traditional RFID (Radio Frequency Identification) circuit, a RFID chip is general only Connect one to two antenna.In the application for including mutiple antennas, need to cause more days using multiple RFID chips Line RFID circuit volume is larger and higher cost.

Utility model content

Based on this, it is necessary to which larger for multiple antennas RFID circuit volume and higher cost defect provides more days a kind of Line RFID circuit and multiple antennas RFID reader.

Technical solution provided by the utility model is as follows:

A kind of multiple antennas RFID circuit, including electronic switch, control module, RFID read-write module and one or more Anneta module；

Electronic switch includes input terminal and one or more output ends；Wherein, the input terminal of electronic switch connects The card reading information output of RFID read-write module is connect, output end and the Anneta module of electronic switch connect one to one；

Control module connects the control terminal of electronic switch, and for control the input terminal of electronic switch with it is each defeated The connection of outlet.

One power end of electronic switch is for connecting positive supply, and another power end is for connecting negative supply.

In an optional embodiment, control module is also connected with the control terminal of RFID read-write module, described for controlling RFID read-write module passes through the Anneta module being connected and reads and writes corresponding RFID information.

In an optional embodiment, control module be used to control the input terminal of the electronic switch successively with it is each defeated Outlet connection.

Electronic switch is one analog switch of multiselect.

In an optional embodiment, electronic switch is that HEF4051BT eight selects an analog switch.

In an optional embodiment, control module MCU.

In an optional embodiment, RFID read-write module is RFID card reading circuit.

Multiple antennas RFID circuit provided by the utility model, the input terminal that control module passes through control electronic switch It is successively connect with each output end, connect the card reading information output of RFID read-write module with Anneta module, realized same Carry mutiple antennas module in RFID read-write module reduces the volume and cost of multiple antennas RFID circuit.Meanwhile by electronics One power end of switching switch connects positive supply, and another power end connects negative supply, reduces the signal in multiple antennas RFID circuit Loss, guarantees the correct transmission of signal.

The utility model embodiment also provides a kind of multiple antennas RFID reader, including reader shell, and setting exists Multiple antennas RFID circuit in reader shell.

Multiple antennas RFID reader provided by the utility model embodiment meets RFID by multiple antennas RFID circuit In the application of multiple antennas application while the volume and cost of multiple antennas RFID reader is effectively reduced in circuit.

Detailed description of the invention

Fig. 1 is multiple antennas RFID circuit module connection figure；

Fig. 2 is the power supply connection schematic diagram of electronic switch.

Specific embodiment

The purpose of this utility model, technical solution and technical effect in order to better understand, below in conjunction with attached drawing and reality It applies example and further explaining illustration is carried out to the utility model.It states simultaneously, embodiments described below is only used for explaining this Utility model is not used to limit the utility model.

Fig. 1 is multiple antennas RFID circuit module connection figure, as shown in Figure 1, multiple antennas RFID circuit includes that electronics switching is opened Close 101, control module 102, RFID read-write module 103 and one or more Anneta modules 104；

Electronic switch 101 includes input terminal TX and one or more output ends (TX1~TXn)；Wherein, electronics switches The card reading information output out of the input terminal TX connection RFID read-write module 103 of switch 101, the output of electronic switch 101 End (TX1~TXn) connects one to one with Anneta module 104；

Control module 102 connects the control terminal A of electronic switch 101, and for controlling the defeated of electronic switch 101 Enter to hold TX to connect with each output end (TX1~TXn).

Control module 102 be used to control the input terminal TX of electronic switch 101 successively with each output end (TX1~TXn) Connection, i.e. input terminal TX only connect output end TXn all the way in a moment.Wherein, control module 102 can be processor or processing Circuit, by the way that preset switching signal is transmitted to electronic switch 101, make the input terminal TX of electronic switch 101 according to It is secondary to be connect with each output end (TX1~TXn).

Wherein, control module 102 can be control circuit or control chip.Wherein, 101 input terminal TX of electronic switch Connection with output end (TX1~TXn) can be controlled by logic level, and logic level is input to the control of electronic switch 101 End A processed, electronic switch 101 select a corresponding output end (TX1~TXn) and input according to the logic level at a moment Hold TX connection.Based on this, control circuit is the circuit of exportable logic level, and control chip is to be previously written logic level control Logic or the controllable chip of logic.In an optional embodiment, control module 102 is MCU.Electronics is previously written in MCU Switch the control logic of switch, such as dynamic polling or jump inquiry control logic, controls 101 input terminal of electronic switch The connection of TX and output end (TX1~TXn).

Multiple antennas RFID circuit provided by the present embodiment, control module 102 pass through control electronic switch 101 Input terminal TX is successively connect with each output end (TX1~TXn), makes the card reading information output out of RFID read-write module 103 successively It is connect with Anneta module 104, realizes the carry mutiple antennas module 104 in same RFID read-write module 103, reduce multiple antennas The volume and cost of RFID circuit.

Fig. 2 is the power supply connection schematic diagram of electronic switch, as shown in Fig. 2, a power supply of electronic switch 101 Hold V+ connection positive supply, another power end V- connection negative supply.

Wherein, positive supply and negative supply are the identical power supply of output voltage absolute value.

Generally, the power end of electronic switch 101 is to connect positive supply and ground respectively.In the present embodiment, by electronics Switch a power end V+ connection positive supply of switch 101, another power end V- connection negative supply, so that electronic switch 101 RFID signal in circuit will not be had an impact, it is ensured that RFID signal free of losses transmission solves multiple antennas RFID circuit card reading Apart from close problem.

Wherein, electronic switch 101 can be one analog switch of multiselect, such as 16 1 analog switch, 8 be selected to select 1 analog switch Or 4 select 1 analog switch etc..Each output end of one analog switch of multiselect is correspondingly connected with an Anneta module 104, RFID read-write module 103 can realize the connection with Anneta module 104 by the input terminal of one analog switch of multiselect.In an optional embodiment, choosing Selecting an analog switch with HEF4051BT eight is electronic analog swtich 101, is realized carry 8 in same RFID read-write module 103 Anneta module 104.

As shown in Fig. 2, control module 102 is also connected with the control terminal B of RFID read-write module in an optional embodiment, Pass through the Anneta module being connected read-write RFID card information for controlling RFID read-write module 103.Based on this, it is effectively reduced more days The volume of line RFID circuit.Wherein, RFID card reading circuit or RFID read-write chip can be selected in RFID read-write module 104.Meanwhile day Wire module 105 can be the antenna plate of naked antenna or access antenna.

The utility model embodiment also provides a kind of multiple antennas RFID reader, including reader shell, and setting exists In reader shell as above-described embodiment multiple antennas RFID circuit.By multiple antennas RFID circuit, meets RFID circuit and exist The application of multiple antennas application, while the volume and cost of multiple antennas RFID reader is effectively reduced.

Each technical characteristic of above embodiments can be combined arbitrarily, for simplicity of description, not to above-described embodiment In each technical characteristic it is all possible combination be all described, as long as however, the combination of these technical characteristics be not present lance Shield all should be considered as described in this specification.

Above embodiments only express the several embodiments of the utility model, and the description thereof is more specific and detailed, but simultaneously The limitation to utility model patent range therefore cannot be interpreted as.It should be pointed out that for the ordinary skill people of this field For member, without departing from the concept of the premise utility, various modifications and improvements can be made, these belong to this reality With novel protection scope.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.

Claims

1. a kind of multiple antennas RFID circuit, which is characterized in that including electronic switch, control module, RFID read-write module and One or more Anneta modules；

The electronic switch includes input terminal and one or more output ends；Wherein, the input of the electronic switch End connects the card reading information output of the RFID read-write module, the output end of the electronic switch and the Anneta module It connects one to one；

The control module connects the control terminal of the electronic switch, and the input for controlling the electronic switch The connection at end and each output end；

One power end of the electronic switch is for connecting positive supply, and another power end is for connecting negative supply.

2. multiple antennas RFID circuit according to claim 1, which is characterized in that the positive supply is defeated with the negative supply The identical power supply of absolute value of voltage out.

3. multiple antennas RFID circuit according to claim 1, which is characterized in that the control module is also connected with the RFID The control terminal of module for reading and writing passes through the corresponding RFID letter of the Anneta module being connected read-write for controlling the RFID read-write module Breath.

4. multiple antennas RFID circuit according to claim 1, which is characterized in that the control module is for controlling the electricity The input terminal of son switching switch is successively connect with each output end.

5. multiple antennas RFID circuit according to any one of claims 1 to 4, which is characterized in that the electronics switching is opened Closing is one analog switch of multiselect.

6. multiple antennas RFID circuit according to claim 5, which is characterized in that the electronic switch is HEF4051BT eight selects an analog switch.

7. multiple antennas RFID circuit according to any one of claims 1 to 4, which is characterized in that the control module is MCU。

8. multiple antennas RFID circuit according to any one of claims 1 to 4, which is characterized in that the RFID read-write mould Block is RFID card reading circuit.

9. multiple antennas RFID circuit according to any one of claims 1 to 4, which is characterized in that the Anneta module is Antenna plate.

10. a kind of multiple antennas RFID reader, which is characterized in that including reader shell, and be arranged outside the reader Multiple antennas RFID circuit as claimed in any one of claims 1 to 9 in shell.