CN210155655U - USB converter for signals of wiegand and serial port - Google Patents
USB converter for signals of wiegand and serial port Download PDFInfo
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- CN210155655U CN210155655U CN201921519082.5U CN201921519082U CN210155655U CN 210155655 U CN210155655 U CN 210155655U CN 201921519082 U CN201921519082 U CN 201921519082U CN 210155655 U CN210155655 U CN 210155655U
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Abstract
The utility model discloses a USB converter of wiegand serial signals, include: the USB interface is arranged at one end of the shell, and the wiring terminal is arranged at the other end of the shell; be provided with a converting circuit in the casing, converting circuit includes: the LED chip comprises an STM32F103CBT6 chip, a MAX3232CSE chip, an ELD207 optocoupler, a single-row pin, an FT232RL chip, a TPS70933DBVR chip and an LED status light; the LED status light is arranged on the surface of the shell. The utility model discloses support the interconversion of three kinds of interface signal of wiegand, serial ports and USB simultaneously, the communication conversion of multiple scene need not multiple equipment, and it is very convenient to use and debug.
Description
Technical Field
The utility model relates to a converter technical field, concretely relates to USB converter of wiegand serial signals.
Background
Most of the entrance guard card readers in the market have only two interfaces, one interface is a wiegand interface, the card reader is connected with a controller through the wiegand interface, the card reader occupies more than 95% of the market, and the entrance guard card reader is already a standard of the industry for over ten years. The other is an RS232 (or 485) interface, and the card readers generally belong to special card readers, and the number of the card readers is small. In a department access controller product, only an RS232 interface is supported, and a WG interface is not provided, so that a Wiegand signal needs to be converted into an RS232 signal.
Because the USB interface of the existing computer is a universal standard interface, the RS232 interface is disappeared slowly, and the computer can not support the Wiegand interface, if an entrance guard card reader of the Wiegand interface or the RS232 interface is connected with the computer, only a special Wiegand-to-USB or RS 232-to-USB converter is purchased, and the two are different products and can not be supported simultaneously.
Accordingly, the prior art is yet to be improved and developed.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, to prior art's above-mentioned defect, provide a USB converter of wiegand serial ports signal, can support the interconversion of three kinds of signals of wiegand, serial ports and USB simultaneously.
The utility model provides a technical scheme that technical problem adopted as follows:
a USB converter for wiegand and serial signals, comprising:
the USB interface is arranged at one end of the shell, and the wiring terminal is arranged at the other end of the shell;
be provided with a converting circuit in the casing, converting circuit includes: the LED chip comprises an STM32F103CBT6 chip, a MAX3232CSE chip, an ELD207 optocoupler, a single-row pin, an FT232RL chip, a TPS70933DBVR chip and an LED status light;
the wiring terminal is optically coupled with a MAX3232CSE chip and an ELD207, the other end of the MAX3232CSE chip is connected with a single-row needle, the other end of the single-row needle is connected with an FT232RL chip, the other end of the FT232RL chip is connected with a USB interface, the USB interface is connected with a TPS70933DBVR chip, the TPS70933DBVR chip is connected with an LED state lamp, the LED state lamp is connected with an STM32F103CBT6 chip, and the ELD207 optical coupler is connected with an STM32F103CBT6 chip;
the LED status light is arranged on the surface of the shell.
Preferably, the connecting terminals comprise a Wiegand signal connecting terminal, an RS232 connecting terminal and a power supply connecting terminal.
Preferably, the wiegand signal wiring terminal is optically coupled with the ELD207, and the RS232 wiring terminal is connected with the MAX3232CSE chip.
Preferably, a resistor is connected between the RS232 terminal and the MAX3232CSE chip.
Preferably, a diode is connected between the ELD207 optical coupler and the STM32F103CBT6 chip.
Preferably, the STM32F103CBT6 chip is connected with a download debugging interface.
Preferably, a crystal oscillator is connected to the 5 pins and the 6 pins of the STM32F103CBT6 chip.
Preferably, the TPS70933DBVR chip converts a 12V DC voltage to a 3.3V DC voltage.
Compared with the prior art, the utility model provides a USB converter of wiegand serial signals has following beneficial effect:
the converter simultaneously supports the mutual conversion of three interface signals of the Wiegand, the serial port and the USB, does not need various devices for communication conversion in various scenes, and is very convenient to use and debug.
Drawings
In order to illustrate the solution of the present application more clearly, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and that other drawings can be obtained by those skilled in the art without inventive effort.
Fig. 1 is a schematic diagram of a first structure of a preferred embodiment of the USB converter for wiegand and serial signals according to the present invention.
Fig. 2 is a second schematic structural diagram of a preferred embodiment of the USB converter for wiegand and serial signals according to the present invention.
Fig. 3 is a block diagram of a preferred embodiment of the USB converter for wiegand and serial signals according to the present invention.
Fig. 4 is a circuit diagram of an STM32F103CBT6 chip in a preferred embodiment of a USB converter for wiegand and serial signals according to the present invention.
Fig. 5 is a circuit diagram of a MAX3232CSE chip in a preferred embodiment of a USB converter for wiegand and serial signals according to the present invention.
Fig. 6 is a circuit diagram of an ELD207 optocoupler in a preferred embodiment of a USB converter for wiegand and serial signals according to the present invention.
Fig. 7 is a circuit diagram of a single row of pins in a preferred embodiment of a USB converter for wiegand and serial signals in accordance with the present invention.
Fig. 8 is a circuit diagram of an FT232RL chip in a preferred embodiment of the USB converter for wiegand and serial signals according to the present invention.
Fig. 9 is a circuit diagram of a TPS70933DBVR chip in a preferred embodiment of a USB converter for wiegand and serial signals according to the present invention.
Fig. 10 is a circuit diagram of an LED status light in a preferred embodiment of a USB converter for wiegand and serial signals in accordance with the present invention.
Fig. 11 is a circuit diagram of a USB interface and a connection terminal in a preferred embodiment of the USB converter for wiegand serial signals according to the present invention.
Fig. 12 is a circuit diagram of a download debug interface in a preferred embodiment of a USB converter for wiegand and serial signals in accordance with the present invention.
Detailed Description
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof, in the description and claims of this application and the description of the above figures are intended to cover non-exclusive inclusions. The terms "first," "second," and the like in the description and claims of this application or in the above-described drawings are used for distinguishing between different objects and not for describing a particular order.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
The embodiment of the utility model provides a USB converter of wiegand serial ports signal, as shown in fig. 1 to fig. 12, it includes: the USB interface is arranged at one end of the shell, and the wiring terminal is arranged at the other end of the shell;
be provided with a converting circuit in the casing, converting circuit includes: the LED chip comprises an STM32F103CBT6 chip, a MAX3232CSE chip, an ELD207 optocoupler, a single-row pin, an FT232RL chip, a TPS70933DBVR chip and an LED status light;
the wiring terminal is optically coupled with a MAX3232CSE chip and an ELD207, the other end of the MAX3232CSE chip is connected with a single-row needle, the other end of the single-row needle is connected with an FT232RL chip, the other end of the FT232RL chip is connected with a USB interface, the USB interface is connected with a TPS70933DBVR chip, the TPS70933DBVR chip is connected with an LED state lamp, the LED state lamp is connected with an STM32F103CBT6 chip, and the ELD207 optical coupler is connected with an STM32F103CBT6 chip;
the LED status light is arranged on the surface of the shell.
An STM32F103CBT6 chip is used as an MCU for receiving and processing Wiegand signals. The MCU supports multiple Wiegand data formats such as WG26, WG32, WG34, WG35, WG36, WG37, WG40 and the like.
The FT232RL chip is used for USB and RS232 signal conversion, the MAX3232CSE chip is used for TTL level and RS232 level conversion, and the ELD207 optically couples and isolates Wiegand signals to protect internal circuits.
In addition, this STM32F103CBT6 chip can also external two-dimensional code module, supports two-dimensional code simultaneously and sweeps a yard consumption mode.
The LED status light is provided with three, shows power supply, data reception, 3 states of data transmission respectively.
As shown in fig. 11, in a further preferred embodiment of the present invention, the terminals include a wiegand signal terminal, an RS232 terminal and a power terminal.
The Wiegand signal connecting terminal, the RS232 connecting terminal and the power supply connecting terminal are all 3.81 connecting terminals, so that the circuits can be conveniently connected. The USB interface adopts a USB-B female socket.
As shown in fig. 5 and 10, in a further preferred embodiment of the present invention, the wiegand signal connection terminal is optically coupled to the ELD207, and the RS232 connection terminal is connected to the MAX3232CSE chip.
In a further preferred embodiment of the present invention, a resistor is connected between the RS232 terminal and the MAX3232CSE chip.
In a further preferred embodiment of the present invention, a diode is connected between the ELD207 optocoupler and the STM32F103CBT6 chip.
As shown in fig. 12, in a further preferred embodiment of the present invention, the STM32F103CBT6 chip is connected to a download debug interface.
In a further preferred embodiment of the present invention, the 5 pin and the 6 pin of the STM32F103CBT6 chip are connected to a crystal oscillator.
In a further preferred embodiment of the present invention, the TPS70933DBVR chip converts a 12V dc voltage to a 3.3V dc voltage.
The USB 5V and external 12V double-path power supply design is adopted, and the USB 5V power supply can be used in a mode of using a USB port; under the mode of converting Wiegand signals into RS232, external 12V power supply can be used.
To sum up, the utility model discloses a USB converter of wiegand serial ports signal, include: the USB interface is arranged at one end of the shell, and the wiring terminal is arranged at the other end of the shell; be provided with a converting circuit in the casing, converting circuit includes: the LED chip comprises an STM32F103CBT6 chip, a MAX3232CSE chip, an ELD207 optocoupler, a single-row pin, an FT232RL chip, a TPS70933DBVR chip and an LED status light; the wiring terminal is optically coupled with a MAX3232CSE chip and an ELD207, the other end of the MAX3232CSE chip is connected with a single-row needle, the other end of the single-row needle is connected with an FT232RL chip, the other end of the FT232RL chip is connected with a USB interface, the USB interface is connected with a TPS70933DBVR chip, the TPS70933DBVR chip is connected with an LED state lamp, the LED state lamp is connected with an STM32F103CBT6 chip, and the ELD207 optical coupler is connected with an STM32F103CBT6 chip; the LED status lamp is arranged on the surface of the shell, so that the mutual conversion of three interface signals of a Wiegand interface, a serial interface and a USB interface can be simultaneously supported, the communication conversion of various scenes does not need various devices, and the use and the debugging are very convenient.
It is to be understood that the above-described embodiments are merely illustrative of some, but not restrictive, of the broad invention, and that the appended drawings illustrate preferred embodiments of the invention and do not limit the scope of the invention. This application is capable of embodiments in many different forms and is provided for the purpose of enabling a thorough understanding of the disclosure of the application. Although the present application has been described in detail with reference to the foregoing embodiments, it will be apparent to one skilled in the art that the present application may be practiced without modification or with equivalents of some of the features described in the foregoing embodiments. All equivalent structures made by using the contents of the specification and the drawings of the present application are directly or indirectly applied to other related technical fields and are within the protection scope of the present application.
Claims (8)
1. A USB converter of wiegand serial port signal, characterized by that, including:
the USB interface is arranged at one end of the shell, and the wiring terminal is arranged at the other end of the shell;
be provided with a converting circuit in the casing, converting circuit includes: the LED chip comprises an STM32F103CBT6 chip, a MAX3232CSE chip, an ELD207 optocoupler, a single-row pin, an FT232RL chip, a TPS70933DBVR chip and an LED status light;
the wiring terminal is optically coupled with a MAX3232CSE chip and an ELD207, the other end of the MAX3232CSE chip is connected with a single-row needle, the other end of the single-row needle is connected with an FT232RL chip, the other end of the FT232RL chip is connected with a USB interface, the USB interface is connected with a TPS70933DBVR chip, the TPS70933DBVR chip is connected with an LED state lamp, the LED state lamp is connected with an STM32F103CBT6 chip, and the ELD207 optical coupler is connected with an STM32F103CBT6 chip;
the LED status light is arranged on the surface of the shell.
2. The wiegand serial-port signal USB converter according to claim 1, wherein the terminals include a wiegand signal terminal, an RS232 terminal and a power terminal.
3. The wiegand serial-port signal USB converter according to claim 2, wherein the wiegand signal terminal is optically coupled to the ELD207, and the RS232 terminal is connected to a MAX3232CSE chip.
4. The wiegand serial-port signal USB converter according to claim 3, wherein a resistor is connected between the RS232 terminal and the MAX3232CSE chip.
5. The USB converter for the Wiegand and serial signals according to claim 3, wherein a diode is connected between the ELD207 optocoupler and the STM32F103CBT6 chip.
6. The USB converter of Wiegand and serial port signals according to claim 1, characterized in that the STM32F103CBT6 chip is connected with a download debugging interface.
7. The wiegand serial-port signal USB converter according to claim 1, wherein a crystal oscillator is connected to pins 5 and 6 of the STM32F103CBT6 chip.
8. The USB converter of Wiegand and serial signals of claim 1, wherein the TPS70933DBVR chip converts 12V DC voltage to 3.3V DC voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921519082.5U CN210155655U (en) | 2019-09-12 | 2019-09-12 | USB converter for signals of wiegand and serial port |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921519082.5U CN210155655U (en) | 2019-09-12 | 2019-09-12 | USB converter for signals of wiegand and serial port |
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| Publication Number | Publication Date |
|---|---|
| CN210155655U true CN210155655U (en) | 2020-03-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921519082.5U Expired - Fee Related CN210155655U (en) | 2019-09-12 | 2019-09-12 | USB converter for signals of wiegand and serial port |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113407471A (en) * | 2021-06-28 | 2021-09-17 | 厦门熵基科技有限公司 | Signal sharing line, signal selection method, electronic device and storage medium |
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2019
- 2019-09-12 CN CN201921519082.5U patent/CN210155655U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113407471A (en) * | 2021-06-28 | 2021-09-17 | 厦门熵基科技有限公司 | Signal sharing line, signal selection method, electronic device and storage medium |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200317 Termination date: 20200912 |