CN210015447U - Miniature low-frequency handheld reader - Google Patents

Abstract

The utility model particularly discloses a miniature low-frequency hand-held reader, which comprises an upper shell and a lower shell; a PCB is arranged between the upper shell and the lower shell, and a main control chip is arranged on the PCB; the main control chip is electrically connected with a field effect transistor driver; the upper surface of the upper shell is provided with a control button and an OLED liquid crystal screen; the control button is electrically connected with the field effect transistor driver; the OLED liquid crystal screen is electrically connected with the main control chip; the PCB is provided with a transmitting module and a data storage module; the transmitting module and the data storage module are electrically connected with the main control chip respectively; a coil antenna module is also arranged between the upper shell and the lower shell; the coil antenna module is electrically connected with the transmitting module; the upper shell and the lower shell are fixedly connected through a fixing bolt. The utility model discloses small, convenient to carry, the interference killing feature of reading the ware is high, the phenomenon of mistake appears when can avoiding reading label data.

Description

Miniature low-frequency handheld reader

Technical Field

The utility model relates to a reading and writing equipment technical field, concretely relates to handheld ware that reads of miniature low frequency.

Background

The animal RFID handheld reader on the market at the present stage mainly comprises a core detection circuit which is formed by combining an operational amplifier with peripheral discrete components and has the functions of signal amplification and filtering, a class B or class AB power amplification circuit and a 134.2KHz square wave generation and demodulation process of a single chip microcomputer and an LCD (liquid crystal display), and has the main functions of reading FDX radio frequency passive tags (animal ear tags, glass tube tags implanted into animal bodies) and the like supporting ISO11784/ISO11785 protocol specifications and reading FDX radio frequency passive tags supporting ISO18000-2 protocols, displaying the read tag information through the LCD and storing the tag information in a nonvolatile memory of the LCD, and facilitating the functions of checking, managing and the like of a user.

However, the conventional reader supports a single type of tag reading, has a short distance relative to the tag reading, contains rich harmonic components in a radiation electromagnetic field, is easy to interfere normal work of other equipment, has weak anti-interference capability, and has a tag data reading error phenomenon.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a handheld ware of reading of miniature low frequency is provided, it has higher interference killing feature, the phenomenon of mistake appears when can avoiding reading label data.

A miniature low-frequency hand-held reader comprises an upper shell and a lower shell; a PCB is arranged between the upper shell and the lower shell, and a main control chip is arranged on the PCB; the main control chip is electrically connected with a field effect transistor driver; the upper surface of the upper shell is provided with a control button and an OLED liquid crystal screen; the control button is electrically connected with the field effect transistor driver; the OLED liquid crystal screen is electrically connected with the main control chip; the PCB is provided with a transmitting module and a data storage module; the transmitting module and the data storage module are electrically connected with the main control chip respectively; a coil antenna module is also arranged between the upper shell and the lower shell; the coil antenna module is electrically connected with the transmitting module; the upper shell and the lower shell are fixedly connected through a fixing bolt.

Preferably, a storage battery is arranged between the main control chip and the lower shell; the storage battery is electrically connected with the main control chip.

Preferably, a passive buzzer is further arranged between the upper shell and the lower shell; and the upper shell is provided with a sound raising port corresponding to the passive buzzer.

Preferably, the PCB is provided with a USB management chip; the USB management chip is electrically connected with the main control chip.

Preferably, the lower ends of the bottoms of the upper shell and the lower shell are provided with USB ports; the USB port is electrically connected with the USB management chip.

Preferably, the model of the main control chip is STC15W4K16S4 chip.

Preferably, the OLED liquid crystal screen is 12832 OLED liquid crystal screen.

Preferably, the USB management chip is a PDUSBD12 chip.

Preferably, the fet driver is a TC4422A driver.

Preferably, the USB port is a USB virtual serial communication port or a bluetooth virtual serial communication port.

Has the advantages that: the utility model discloses go up the casing and pass through fixing bolt fixed connection with lower casing, small, and convenient to carry adopts 12832 hi-lite OLED liquid crystal screen to show label information and passive bee calling organ suggestion, effectively improves the interference killing feature who reads the ware, the phenomenon of mistake appears when can avoiding reading label data, the management of label information is made things convenient for more to the design of emission module and data storage module, the label information that uses the USB port conveying to scan reaches the host computer and charge to the battery.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic diagram of the internal structure of the present invention.

Fig. 3 is a schematic diagram of the circuit connection of the present invention.

In the figure: 1-an upper shell; 2-a lower shell; 3-a main control chip; 4-control buttons; 5-OLED liquid crystal screen; 6-a sound raising port; 7-USB port; 8-a buzzer; 9-fixing the bolt; 10-a storage battery; 11-a USB management chip; 12-a coil antenna module; 13-a transmitting module; 14-a data storage module; 15-a field effect transistor driver; 16-PCB board.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example 1

As shown in fig. 1 to 3, the present invention provides a miniature low frequency hand-held reader, which comprises an upper casing 1 and a lower casing 2; a PCB (printed Circuit Board) 16 is arranged between the upper shell 1 and the lower shell 2; the PCB 16 is provided with a main control chip 3; the main control new chip 3 is electrically connected with a field effect transistor driver 15 with the model number TC 4422A; the upper surface of the upper shell 1 is provided with a control button 4 and an OLED liquid crystal screen 5; the control button 4 is electrically connected with the field effect transistor driver 15; the OLED liquid crystal screen 5 is electrically connected with the main control chip 3; the PCB 16 is provided with a transmitting module 13 and a data storage module 14; the transmitting module 13 and the data storage module 14 are respectively electrically connected with the main control chip 3; a coil antenna module 12 is also arranged between the upper shell 1 and the lower shell 2; the coil antenna module 12 is electrically connected with the transmitting module 13; the upper shell 1 and the lower shell 2 are fixedly connected through a fixing bolt 9.

A storage battery 10 is arranged between the main control chip 3 and the lower shell 2; the storage battery 10 is electrically connected with the main control chip 3; a passive buzzer 8 is also arranged between the upper shell 1 and the lower shell 2; the upper shell 1 is provided with a loudspeaker port 6 corresponding to the passive buzzer 8; the PCB 16 is also provided with a USB management chip 11; the USB management chip 11 is electrically connected with the main control chip 3; the lower ends of the bottoms of the upper shell 1 and the lower shell 2 are provided with USB ports 7; the USB port 7 is electrically connected to the USB management chip 11.

The model of the main control chip 3 is an STC15W4K16S4 chip; the type of the OLED liquid crystal screen 5 is 12832; the USB management chip 11 is a PDUSBD12 chip; the fet driver 15 is a TC4422A driver; the USB port 7 is a USB virtual serial communication port or a Bluetooth virtual serial communication port.

The utility model discloses go up casing 1 and lower casing 2 and pass through fixing bolt 9 fixed connection, small, and convenient to carry adopts 12832 hi-lite OLED liquid crystal screen to show label information and passive bee calling organ suggestion, effectively improves the interference killing feature of reading the ware, the phenomenon of mistake appears when can avoiding reading label data, emission module 13 and data storage module 14's design makes things convenient for label information's management more, the label information that uses 7 conveying of USB port to scan charges to the host computer and to battery 10.

The utility model realizes the demodulation of FDX, HDX and FECAVA passive labels based on ISO11784/ISO11785 protocol specification and the demodulation of FDX passive labels based on ISO18000-2 protocol specification through an STC15W4K16S4 chip and an FDX and EMID demodulation circuit built by combining an MCP6002I operational amplifier and a discrete element, the TMS3705 chip-based built-in full-bridge power amplifier circuit pushes an external half-bridge power amplifier circuit formed by MOS (metal oxide semiconductor) tubes, and a band-pass filter circuit is combined to realize high-power carrier output and relatively low harmonic components contained in a radiation electromagnetic field, therefore, the reading distance of the tag is increased, and the anti-interference capability of the reader and the success rate of reading tag data are improved by combining a hardware base formed by an FSK detection and demodulation circuit in TMS3705, a high-efficiency ASK detection circuit formed by an operational amplifier MCP6002I and discrete components, a radio frequency demodulation and detection circuit formed by a band-pass filter circuit and a shaping circuit and a demodulation algorithm in a single chip.

Instructions for use: pressing control button 4 and starting the ware of reading, field effect transistor driver 15 starts scanning label information, available reading ware is close to the label this moment, read and can show label information at OLED LCD screen 5 and by passive buzzer 8 prompt tone after the ware discernment label, the label information transmission to the host computer that will read simultaneously through USB management chip 11, USB port 7 is connected the computer after the computer can indicate and find 7 hints of USB port, the drive installation finish the back configuration serial ports parameter can, USB port 7 uses with the mouth that charges concurrently.

Of course, the above description only shows a certain embodiment of the present invention, and the detailed description thereof is not to be construed as limiting the scope of the present invention, and it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principle and spirit of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. A miniature low-frequency hand-held reader comprises an upper shell and a lower shell; the method is characterized in that: a PCB is arranged between the upper shell and the lower shell, and a main control chip is arranged on the PCB; the main control chip is electrically connected with a field effect transistor driver; the upper surface of the upper shell is provided with a control button and an OLED liquid crystal screen; the control button is electrically connected with the field effect transistor driver; the OLED liquid crystal screen is electrically connected with the main control chip; the PCB is provided with a transmitting module and a data storage module; the transmitting module and the data storage module are electrically connected with the main control chip respectively; a coil antenna module is also arranged between the upper shell and the lower shell; the coil antenna module is electrically connected with the transmitting module; the upper shell and the lower shell are fixedly connected through a fixing bolt.

2. The miniature low-frequency handheld reader according to claim 1, wherein a storage battery is arranged between the main control chip and the lower shell; the storage battery is electrically connected with the main control chip.

3. The miniature low frequency hand-held reader according to claim 1, wherein a passive buzzer is further disposed between said upper housing and said lower housing; and the upper shell is provided with a sound raising port corresponding to the passive buzzer.

4. The miniature low-frequency handheld reader according to claim 1, wherein a USB management chip is further disposed on the PCB; the USB management chip is electrically connected with the main control chip.

5. The miniature low-frequency handheld reader according to claim 1, wherein the lower ends of the bottoms of the upper shell and the lower shell are provided with USB ports; the USB port is electrically connected with the USB management chip.

6. The miniature low frequency hand-held reader as claimed in claim 1, wherein said master control chip is STC15W4K16S4 chip.

7. The miniature low frequency hand-held reader as claimed in claim 1, wherein said OLED liquid crystal screen is 12832 OLED liquid crystal screen.

8. The miniature low frequency hand-held reader according to claim 4, wherein said USB management chip is model number PDUSBD12 chip.

9. The miniature low frequency hand-held reader of claim 1, wherein said fet driver is a TC4422A driver.

10. The miniature low frequency hand held reader according to claim 5, wherein said USB port is a USB virtual serial communication port or a Bluetooth virtual serial communication port.

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