CN207895456U

CN207895456U - A kind of non-blind area card reading circuit module

Info

Publication number: CN207895456U
Application number: CN201721641307.5U
Authority: CN
Inventors: 王春桥; 周跃军
Original assignee: HANGZHOU YINGJIE ELECTRONIC CO Ltd
Current assignee: HANGZHOU YINGJIE ELECTRONIC CO Ltd
Priority date: 2017-11-30
Filing date: 2017-11-30
Publication date: 2018-09-21
Anticipated expiration: 2027-11-30

Abstract

The utility model discloses a kind of non-blind area card reading circuit modules, including Card Reader control module and the card reading antennas module one being connect with Card Reader control module, card reading antennas module two, the Card Reader control module is by Card Reader chip U1, crystal oscillating circuit, radio frequency network match circuit forms, the card reading antennas module one is by PCB printed antennas one, RF switch U2 match circuits form, the card reading antennas module two is by PCB printed antennas two, RF switch U3 match circuits form, the utility model is swiped the card region non-blind area, signal is good when being swiped the card using lesser calorie, simultaneously kilocalorie swipe the card experience it is also preferable.

Description

A kind of non-blind area card reading circuit module

Technical field

The utility model is related to the technical fields of card reader, and in particular to a kind of non-blind area card reading circuit module.

Background technology

Card reader is essentially all single antenna mode currently on the market, this mode is also possible that standard kilocalorie Card Reader performance But for lesser calorie, because antenna area is big, coupling distance is remote, is easy occur blind area in region of swiping the card, actual user is brushing Needing to be moved to different positions when card can just swipe the card.

Invention content

In order to solve the above-mentioned problems in the prior art, the utility model provides a kind of non-blind area card reading circuit mould Block.

To achieve the above object, the technical scheme adopted by the utility model is that：

A kind of non-blind area card reading circuit module, including Card Reader control module and the Card Reader day that is connect with Card Reader control module Wire module one, card reading antennas module two, the Card Reader control module are matched by Card Reader chip U1, crystal oscillating circuit, radio frequency network Circuit forms, and the card reading antennas module one is made of PCB printed antennas one, RF switch U2 match circuits, the reading Card Anneta module two is made of PCB printed antennas two, RF switch U3 match circuits.

Preferably, the conducting of the described Card Reader control module control card reading antennas module one and card reading antennas module two and Cut-out, Anneta module one and card reading antennas module two are used to send radiofrequency signal to surrounding.

Preferably, when the card reading antennas module one works, card reading antennas module two is in dissengaged positions, described When card reading antennas module two works, card reading antennas module one is in dissengaged positions.

Preferably, the crystal oscillating circuit is made of crystal oscillator XT1, capacitance C1, C2 match circuit, crystal oscillator XT1 is being assisted Starting of oscillation capacitance C1, C2 effect are lower to complete concussion, and clock signal is provided to Card Reader chip U1.

Preferably, the radio frequency network is made of inductance L1, L2 and capacitance C3, C4 match circuit, it is used for surrounding Send radiofrequency signal.

Preferably, the signal range of transmission of the card reading antennas module one, card reading antennas module two partly overlaps, shape It swipes the card region at non-blind area.

A kind of non-blind area card reading circuit module described in the utility model, compensates for the deficiencies in the prior art, using two Antenna sends radiofrequency signal and overlaps to form non-blind area in intermediate region and swipes the card region, ensure kilocalorie swipe the card experience while, It is good for lesser calorie signal of swiping the card, and since two antennas do not work at the same time, low in energy consumption, battery is long.

Description of the drawings

Fig. 1 is the module diagram of the utility model；

Fig. 2 is the circuit diagram of Card Reader control module；

Fig. 3 is the circuit diagram of card reading antennas module one；

Fig. 4 is the circuit diagram of card reading antennas module two；

Fig. 5 is the schematic layout pattern of the utility model.

Specific implementation mode

The utility model is described further with reference to the accompanying drawings and examples.

As shown in Figure 1, a kind of non-blind area card reading circuit module, including Card Reader control module and connect with Card Reader control module Card reading antennas module one, the card reading antennas module two connect, the Card Reader control module by Card Reader chip U1, crystal oscillating circuit, penetrate Frequency net mate circuit forms, and the card reading antennas module one is by PCB printed antennas 1, RF switch U2 match circuit groups At the card reading antennas module two is made of PCB printed antennas 2 12, RF switch U3 match circuits, the Card Reader control Molding block control card reading antennas module one and card reading antennas module two are switched on and off, Anneta module one and card reading antennas module Two to surrounding for sending radiofrequency signal, and when the card reading antennas module one works, card reading antennas module two is in cut-out shape State, when the card reading antennas module two works, card reading antennas module one is in dissengaged positions, and the crystal oscillating circuit is by crystal oscillator XT1, capacitance C1, C2 match circuit composition, crystal oscillator XT1 complete concussion under auxiliary starting of oscillation capacitance C1, C2 effect, give Card Reader chip U1 provides clock signal, and the radio frequency network is made of inductance L1, L2 and capacitance C3, C4 match circuit, for being sent out to surrounding Send radiofrequency signal, the card reading antennas module one, card reading antennas module two signal range of transmission partly overlap, formed without blind Area swipes the card region 13.

As shown in Fig. 2, the transmitting signal that transmitting signal TX1 and TX2 are two-way antenna drives end, TVSS

For antenna, after connecting card reading antennas module, wireless signal can smoothly emit.It is wireless signal to receive signal RX Receiving terminal.Capacitance C6 low frequency filterings are first passed through, while inclined to reception of wireless signals end offer direct current after resistance R1 and R2 partial pressure Voltage is set, 17th foot of the wireless signal in Card Reader chip U1 is received, and number is transformed by the inter-process of Card Reader chip U1 Signal completes Card Reader effect.

As shown in Figure 3 and Figure 4, when card reading antennas module one works, processor sets control signal CTRL1 high level, control Signal CTRL2 low levels processed, RF switch U2 conductings, the transmitting signal TX1 of card reading antennas module one pass through capacitance C8 and Card Reader PCB antenna, using RF switch U2 J1 and GND be formed into a loop, be wirelessly launched away, card reading antennas module second because Control signal CTRL1 high level, control signal CTRL2 low levels, RF switch U3 is off, by radiofrequency signal TX2, Capacitance C12, Card Reader PCB antenna, the radio frequency network of RF switch U3 compositions are cut-off, therefore the wireless place of card reading antennas module two In dissengaged positions.Conversely, when card reading antennas module two works, signal CTRL2 high level is controlled, control signal CTRL1 is in low First level, card reading antennas module are in dissengaged positions.

As shown in figure 5, two arranged crosswise of card reading antennas module one and card reading antennas module, centre forms non-blind area credit card area Domain.

The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all in this practicality All any modification, equivalent and improvement etc., are all contained in the protection of the utility model made by within novel spirit and principle Within the scope of.

Claims

1. a kind of non-blind area card reading circuit module, it is characterised in that：It is connect including Card Reader control module and with Card Reader control module Card reading antennas module one, card reading antennas module two, the Card Reader control module is by Card Reader chip U1, crystal oscillating circuit, radio frequency Net mate circuit forms, and the card reading antennas module one is made of PCB printed antennas one, RF switch U2 match circuits, The card reading antennas module two is made of PCB printed antennas two, RF switch U3 match circuits.

2. a kind of non-blind area card reading circuit module according to claim 1, which is characterized in that the Card Reader control module Control card reading antennas module one and card reading antennas module two are switched on and off, and Anneta module one and card reading antennas module two are used for Radiofrequency signal is sent to surrounding.

3. a kind of non-blind area card reading circuit module according to claim 2, which is characterized in that the card reading antennas module When one work, card reading antennas module two is in dissengaged positions, when the card reading antennas module two works, card reading antennas module one In dissengaged positions.

4. a kind of non-blind area card reading circuit module according to claim 1, which is characterized in that the crystal oscillating circuit is by crystalline substance Shake XT1, capacitance C1, C2 match circuit composition, and crystal oscillator XT1 completes concussion under auxiliary starting of oscillation capacitance C1, C2 effect, gives Card Reader core Piece U1 provides clock signal.

5. a kind of non-blind area card reading circuit module according to claim 1, which is characterized in that the radio frequency network is by electricity L1, L2 and capacitance C3, C4 match circuit composition are felt, for sending radiofrequency signal to surrounding.

6. a kind of non-blind area card reading circuit module according to claim 1, which is characterized in that the card reading antennas module One, the signal range of transmission of card reading antennas module two partly overlaps, and forms non-blind area and swipes the card region.