CN203689529U - Wireless radio frequency card reader - Google Patents
Wireless radio frequency card reader Download PDFInfo
- Publication number
- CN203689529U CN203689529U CN201320758804.9U CN201320758804U CN203689529U CN 203689529 U CN203689529 U CN 203689529U CN 201320758804 U CN201320758804 U CN 201320758804U CN 203689529 U CN203689529 U CN 203689529U
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- triode
- resistance
- coupling capacitance
- chip microcomputer
- reverser
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Abstract
The utility model relates to a wireless radio frequency card reader comprising a pull-up resistor (1), a one-chip microcomputer (2), a crystal oscillator (3), a demodulation diode (4), a current-limiting resistor (5), a passive filtering resistor (6), a passive filtering capacitor (7), a first coupling capacitor (8), a second coupling capacitor (9), a third coupling capacitor (10), a first filtering capacitor (11), a second filtering capacitor (12), a third filtering capacitor (13), a first amplification resistor (14), a second amplification resistor (15), a third amplification resistor (16), a first amplifier (17), a second amplifier (18), a third amplifier (19), a first reverser (20), a second reverser (21), a third reverser (22), a left input current-limiting resistor (23), and a right input current-limiting resistor (24).
Description
Technical field
The utility model relates to a kind of less radio-frequency card reader, belongs to instrument field.
Background technology
Current, less radio-frequency card reader, because IC-card is passive passive type card, therefore need private base station chip to carry out modulation /demodulation and could realize read-write card operation, because of private base station chip internal structure complexity, simultaneously debug difficulties, therefore needs a kind of modulation /demodulation card-reading mode of fully digitalization.
Summary of the invention
The utility model relates to a kind of less radio-frequency card reader, to realize the equipment with digital form read-write radio-frequency card.
For realizing above-mentioned object, the utility model adopts following technical scheme:
A kind of less radio-frequency card reader, comprises:
Pull-up resistor (1), single-chip microcomputer (2), crystal oscillator (3), detector diode (4), current-limiting resistance (5), passive filtering resistance (6), passive filtering electric capacity (7), the first coupling capacitance (8), the second coupling capacitance (9), the 3rd coupling capacitance (10), the first filter capacitor (11), the second filter capacitor (12), the 3rd filter capacitor (13), first amplifies resistance (14), second amplifies resistance (15), the 3rd amplifies resistance (16), the first amplifier (17), the second amplifier (18), the 3rd amplifier (19), the first reverser (20), the second reverser (21), the 3rd reverser (22), left input current-limiting resistance (23), right input current-limiting resistance (24), the first triode (25), the second triode (26), high pressure coupling capacitance (27), output antenna (28), current-limiting resistance (29), the 3rd triode (30), the 4th triode (31), as shown in Figure 1.
Below in conjunction with accompanying drawing, technical construction of the present utility model and method are described: pull-up resistor (1) is connected with single-chip microcomputer (2), crystal oscillator (3) is connected with single-chip microcomputer (2), pull-up resistor (1), single-chip microcomputer (2) and crystal oscillator (3) form minimum Single Chip Microcomputer (SCM) system, single-chip microcomputer (2) is by the first reverser (20), output modulating pulse, in the left input current-limiting resistance (23) of leading up to input the first triode (25) and the second triode (26) composition output circuit, another road is undertaken oppositely by the second reverser (21) signal, then by right input current-limiting resistance (24) input the 3rd triode (30) and the 4th triode (31) composition output circuit, high pressure coupling capacitance (27) and output antenna (28) are connected to the first triode (25), the second triode (26), in the symmetrical output circuit of the composition such as the 3rd triode (30) and the 4th triode (31), it receives signal and draws in the middle of high pressure coupling capacitance (27) and output antenna (28), by detector diode (4) detecting signal, again by current-limiting resistance (5) current limliting, and connect after the passive filter circuit of passive filtering resistance (6) and passive filtering electric capacity (7) composition, again by the first coupling capacitance (8), be connected in the amplifying circuit of the first amplification resistance (14) and the first amplifier (17) composition, after signal amplifies, be connected to after the first filter capacitor (11) filtering, by the second coupling capacitance (9), be connected in the amplifying circuit of the second amplification resistance (15) and the second amplifier (18) composition, after signal secondary amplifies, connect again after the second filter capacitor (12) filtering, by the 3rd coupling capacitance (10), being connected to the 3rd amplifies in the amplifying circuit of resistance (16) and the 3rd amplifier (19) composition, signal is after amplifying for the third time, connect again after the 3rd filter capacitor (13) filtering, after carrying out wave shaping, the 3rd reverser (22) is input in single-chip microcomputer (2).
The beneficial effects of the utility model: read-write card is accurately rapid, has adult low, safe and reliable advantage.
brief description of the drawings:
Accompanying drawing 1 is structural representation of the present utility model.
embodiment:
In order to make the technical solution of the utility model clearer, below in conjunction with drawings and Examples, the utility model is further described, instantiation described herein, only, in order to explain the utility model, is not limited to the utility model.
embodiment:
Refer to shown in accompanying drawing 1, pull-up resistor (1) is connected with single-chip microcomputer (2), crystal oscillator (3) is connected with single-chip microcomputer (2), pull-up resistor (1), single-chip microcomputer (2) and crystal oscillator (3) form minimum Single Chip Microcomputer (SCM) system, single-chip microcomputer (2) is by the first reverser (20), output modulating pulse, in the left input current-limiting resistance (23) of leading up to input the first triode (25) and the second triode (26) composition output circuit, another road is undertaken oppositely by the second reverser (21) signal, then by right input current-limiting resistance (24) input the 3rd triode (30) and the 4th triode (31) composition output circuit, high pressure coupling capacitance (27) and output antenna (28) are connected to the first triode (25), the second triode (26), in the symmetrical output circuit of the composition such as the 3rd triode (30) and the 4th triode (31), it receives signal and draws in the middle of high pressure coupling capacitance (27) and output antenna (28), by detector diode (4) detecting signal, again by current-limiting resistance (5) current limliting, and connect after the passive filter circuit of passive filtering resistance (6) and passive filtering electric capacity (7) composition, again by the first coupling capacitance (8), be connected in the amplifying circuit of the first amplification resistance (14) and the first amplifier (17) composition, after signal amplifies, be connected to after the first filter capacitor (11) filtering, by the second coupling capacitance (9), be connected in the amplifying circuit of the second amplification resistance (15) and the second amplifier (18) composition, after signal secondary amplifies, connect again after the second filter capacitor (12) filtering, by the 3rd coupling capacitance (10), being connected to the 3rd amplifies in the amplifying circuit of resistance (16) and the 3rd amplifier (19) composition, signal is after amplifying for the third time, connect again after the 3rd filter capacitor (13) filtering, after carrying out wave shaping, the 3rd reverser (22) is input in single-chip microcomputer (2).
Claims (1)
1. a less radio-frequency card reader, comprises: pull-up resistor (1), single-chip microcomputer (2), crystal oscillator (3), detector diode (4), current-limiting resistance (5), passive filtering resistance (6), passive filtering electric capacity (7), the first coupling capacitance (8), the second coupling capacitance (9), the 3rd coupling capacitance (10), the first filter capacitor (11), the second filter capacitor (12), the 3rd filter capacitor (13), first amplifies resistance (14), second amplifies resistance (15), the 3rd amplifies resistance (16), the first amplifier (17), the second amplifier (18), the 3rd amplifier (19), the first reverser (20), the second reverser (21), the 3rd reverser (22), left input current-limiting resistance (23), right input current-limiting resistance (24), the first triode (25), the second triode (26), high pressure coupling capacitance (27), output antenna (28), current-limiting resistance (29), the 3rd triode (30), the 4th triode (31), it is characterized in that: pull-up resistor (1) is connected with single-chip microcomputer (2), crystal oscillator (3) is connected with single-chip microcomputer (2), pull-up resistor (1), single-chip microcomputer (2) and crystal oscillator (3) form minimum Single Chip Microcomputer (SCM) system, single-chip microcomputer (2) is by the first reverser (20), output modulating pulse, in the left input current-limiting resistance (23) of leading up to input the first triode (25) and the second triode (26) composition output circuit, another road is undertaken oppositely by the second reverser (21) signal, then by right input current-limiting resistance (24) input the 3rd triode (30) and the 4th triode (31) composition output circuit, high pressure coupling capacitance (27) and output antenna (28) are connected to the first triode (25), the second triode (26), in the symmetrical output circuit of the composition such as the 3rd triode (30) and the 4th triode (31), it receives signal and draws in the middle of high pressure coupling capacitance (27) and output antenna (28), by detector diode (4) detecting signal, again by current-limiting resistance (5) current limliting, and connect after the passive filter circuit of passive filtering resistance (6) and passive filtering electric capacity (7) composition, again by the first coupling capacitance (8), be connected in the amplifying circuit of the first amplification resistance (14) and the first amplifier (17) composition, after signal amplifies, be connected to after the first filter capacitor (11) filtering, by the second coupling capacitance (9), be connected in the amplifying circuit of the second amplification resistance (15) and the second amplifier (18) composition, after signal secondary amplifies, connect again after the second filter capacitor (12) filtering, by the 3rd coupling capacitance (10), being connected to the 3rd amplifies in the amplifying circuit of resistance (16) and the 3rd amplifier (19) composition, signal is after amplifying for the third time, connect again after the 3rd filter capacitor (13) filtering, after carrying out wave shaping, the 3rd reverser (22) is input in single-chip microcomputer (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320758804.9U CN203689529U (en) | 2013-11-27 | 2013-11-27 | Wireless radio frequency card reader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320758804.9U CN203689529U (en) | 2013-11-27 | 2013-11-27 | Wireless radio frequency card reader |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203689529U true CN203689529U (en) | 2014-07-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320758804.9U Expired - Fee Related CN203689529U (en) | 2013-11-27 | 2013-11-27 | Wireless radio frequency card reader |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203689529U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104392194A (en) * | 2014-11-25 | 2015-03-04 | 成都龙腾中远信息技术有限公司 | Simple radio frequency card circuit |
| CN104680198A (en) * | 2013-11-27 | 2015-06-03 | 哈尔滨市三和佳美科技发展有限公司 | Wireless radio frequency card reader |
-
2013
- 2013-11-27 CN CN201320758804.9U patent/CN203689529U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104680198A (en) * | 2013-11-27 | 2015-06-03 | 哈尔滨市三和佳美科技发展有限公司 | Wireless radio frequency card reader |
| CN104392194A (en) * | 2014-11-25 | 2015-03-04 | 成都龙腾中远信息技术有限公司 | Simple radio frequency card circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140702 Termination date: 20141127 |
|
| EXPY | Termination of patent right or utility model |